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| 1 | 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up. | Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu | 2018 | Science Bulletin2018，63，23： | 54 |
| 2 | Characteristics of volatile organic compounds,NO_2,and effects on ozone formation at a site with high ozone level in Chengdu显示文摘Chengdu is a megacity in the southwest of China with high ozone(O_3) mixing ratio.Observation of volatile organic compounds(VOCs), NO_2 and O_3 with high temporal resolution was conducted in Chengdu to investigate the chemical processes and causes of high O_3 levels. The hourly mixing ratios of VOCs, NO2, and O_3 were monitored by an online system from 28 August to 7 October, 2016. According to meteorological conditions,Chengdu, with relative warm weather and low wind speed, is favorable to O_3 formation.Part of the O_3 in Chengdu may be transported from the downtown area. In O_3 episodes,the average mixing ratios of NO_2 and O_3 were 20.20 ppbv and 47.95 ppbv, respectively. In non-O_3 episodes, the average mixing ratios of NO_2 and O_3 were 16.38 ppbv and 35.15 ppbv,respectively. The average mixing ratio of total VOCs(TVOCs) was 40.29 ppbv in non-O_3 episodes, which was lower than that in O_3 episodes(53.19 ppbv). Alkenes comprised51.7% of the total O_3 formation potential(OFP) in Chengdu, followed by aromatics which accounted for 24.2%. Ethylene, trans-pentene, propene, and BTEX(benzene, ethylbenzene,toluene, m/p-xylene, o-xylene) were also major contributors to the OFP in Chengdu. In O_3 episodes, intensive secondary formations were observed during the campaign. Oxygenated VOCs(OVOCs), such as acetone, Methylethylketone(MEK), and Methylvinylketone(MVK)were abundant. Isoprene rapidly converted to MVK and Methacrolein(MACR) during O_3 episodes. Acetone was mainly the oxidant of C3-C5 hydrocarbons. | Yuanyuan Deng Jing Li Yaqi Li Rongrong Wu Shaodong Xie | 2019 | Journal of Environmental Sciences2019，31，1： | 29 |
| 3 | Mechanistic understanding of the role separators playing in advanced lithium-sulfur batteries显示文摘The lithium-sulfur battery is considered one of the most promising candidates for portable energy storage devices due to its low cost and high energy density.However,many critical issues,including polysulfide shuttling,self-discharge,lithium dendritic growth,and thermal hazards need to be addressed before the commercialization of lithium-sulfur batteries.To this end,tremendous efforts have been made to explore battery configurations and components,such as electrodes,electrolytes,and separators,among which the separator plays an especially critical role in addressing aforementioned issues.Thus,this review analyzes the mechanisms and interactions of these critical issues and summarizes both the function of separators and recent progress made towards remedying such issues.Additionally,promising directions for the development of separators in lithium-sulfur batteries are proposed. | Zhaohuan Wei Yaqi Ren Joshua Sokolowski Xiaodong Zhu Gang Wu | 2020 | InfoMat2020，2，3： | 8 |
| 4 | X-ray scintillation in lead-free double perovskite crystals显示文摘Metal halide perovskites have shown great performance for various applications,including solar cells,light emitting diodes,and radiation detectors,but they still suffer from the toxicity of lead and instability.Here we report the use of lanthanide series as trivalent metals to obtain low toxicity and highly stable double perovskites(Cs_2NaLnCl_6,Ln=Tb or Eu)with high scintillation light yield.The crystals exhibit typical f-f transitions of lanthanide cations,while Cs_2NaTbCl_6exhibits strong green photoluminescence,and Cs_2NaEuCl_6exhibits red photoluminescence.Under X-ray radiations,the light yield of Cs_2NaTbCl_6reaches46600 photons MeV^(-1),much higher than that of the commercially used(Lu,Y)_2SiO_5:Ce^(3+)crystals(LYSO,28500 photons MeV^(-1)),and previously reported lead-based perovskites(14000 photons MeV^(-1)).As a new member of lead-free perovskites,lanthanide-based double perovskites open up a new route toward radiation detections and potential medical imaging. | Qingsong Hu Zhenzhou Deng Manchen Hu Anjiang Zhao Yaqi Zhang Zhifang Tan Guangda Niu Haodi Wu Jiang Tang | 2018 | Science China Chemistry2018，61，12： | 7 |
| 5 | Pathological changes in the lungs and lymphatic organs of 12 COVID-19 autopsy cases显示文摘Systematic autopsy and comprehensive pathological analyses of COVID-19 decedents should provide insights into the disease characteristics and facilitate the development of novel therapeutics.In this study,we report the autopsy findings from the lungs and lymphatic organs of 12 COVID-19 decedents—findings that evaluated histopathological changes;immune cell signature and inflammatory factor expression in the lungs,spleen and lymph nodes.Here we show that the major pulmonary alterations included diffuse alveolar damage,interstitial fibrosis and exudative inflammation featured with extensive serous and fibrin exudates,macrophage infiltration and abundant production of inflammatory factors(IL-6,IP-10,TNFo?and IL-I f).The spleen and hilar lymph nodes contained lesions with tissue structure disruption and immune cell dysregulation,including lymphopenia and macrophage accumulation.These findings provide pathological evidence that links injuries of the lungs and lymphatic organs with the fatal systematic respiratory and immune malfunction in critically ill COVID-19 patients. | Qian Liu Yu Shi Jun Cai Yaqi Duan Rongshuai Wang Hongyan Zhang Qiurong Ruan Jiansha Li Lei Zhao Yifang Ping Rong Chen Liang Ren Xiaochun Fei Heng Zhang Rui Tang Xi Wang Tao Luo Xindong Liu Xuequan Huang Zhenhua Liu Qilin Ao Yong Ren Jing Xiong Zhicheng He Haibo Wu Wenjuan Fu Pengnan Zhao Xinwei Chen Guoqiang Qu Yunyun Wang Xi Wang Jia Liu Dongfang Xiang Sanpeng Xu Xiaowei Zhou Qingrui Li Jinghong Ma Heng Li Jie Zhang Sizhe Huang Xiaohong Yao Yiwu Zhou Chaofu Wang Dingyu Zhang Guoping Wang Liang Liu Xiu-Wu Bian | 2020 | National Science Review2020，7，12： | 6 |
| 6 | Halogen effects on phenylethynyl palladium(Ⅱ) complexes for living polymerization of isocyanides: a combined experimental and computational investigation显示文摘Phenylethynyl palladium(Ⅱ) complexes have proven to be effective catalysts for coordination polymerization of isocyanides. In this work, two new phenylethynyl palladium(Ⅱ) initiators bearing bromide(1b) and iodide(1c) were synthesized and applied for living polymerization of aryl and alkyl isocyanides. The coordinated halogen anions can significantly influence the kinetics of polymerization, with the observed order of reaction rates being 1c(Ⅰ)>1 b(Br)>1a(Cl). Impressively, 1c not only accelerates the reaction rate in both the initiation stage and propagation stage, but also can polymerize less active monomers that cannot be reacted by 1a. DFT calculations were then employed to understand the detailed mechanism and the halogen effects in this insertion polymerization process. | Yaqi Wang Yu Chen Zhiqiang Jiang Fang Liu1 Fang Liu2 Yuanyuan Zhu Yong Liang Zongquan Wu | 2019 | Science China Chemistry2019，62，4： | 4 |
| 7 | The use of supercytokines, immunocytokines, engager cytokines, and other synthetic cytokines in immunotherapy显示文摘Cytokines exert powerful immunomodulatory effects that are critical to physiology and pathology in humans.The application of natural cytokines in clinical studies has not been clearly established,and there are often problems associated with toxicity or lack of efficacy.The key reasons can be attributed to the pleiotropy of cytokine receptors and undesired activation of off-target cells.With a deeper understanding of the structural principles and functional signals of cytokine-receptor interactions,artificial modification of cytokine signaling through protein engineering and synthetic immunology has become an increasingly feasible and powerful approach.Engineered cytokines are designed to selectively target cells.Herein,the theoretical and experimental evidence of cytokine engineering is reviewed,and the“supercytokines”resulting from structural enhancement and the“immunocytokines”generated by antibody fusion are described.Finally,the“engager cytokines”formed by the crosslinking of cytokines and bispecific immune engagers and other synthetic cytokines formed by nonnatural analogs are also discussed. | Xiaohu Zheng Yaqi Wu Jiacheng Bi Yingying Huang Ying Cheng Yangyang Li Yuwei Wu Guoshuai Cao Zhigang Tian | 2022 | Cellular & Molecular Immunology2022，19，2： | 4 |
| 8 | Serum semaphorin 4C as a diagnostic biomarker in breast cancer:A multicenter retrospective study显示文摘Background:To date,there is no approved blood-based biomarker for breast cancer detection.Herein,we aimed to assess semaphorin 4C(SEMA4C),a pivotal protein involved in breast cancer progression,as a serum diagnostic biomarker.Methods:We included 6,213 consecutive inpatients from Tongji Hospital,Qilu Hospital,and Hubei Cancer Hospital.Training cohort and two validation cohorts were introduced for diagnostic exploration and validation.A pan-cancer cohort was used to independently explore the diagnostic potential of SEMA4C among solid tumors.Breast cancer patients who underwent mass excision prior to modified radical mastectomy were also analyzed.We hypothesized that increased pretreatment serum SEMA4C levels,measured using optimized in-house enzymelinked immunosorbent assay kits,could detect breast cancer.The endpoints were diagnostic performance,including area under the receiver operating characteristic curve(AUC),sensitivity,and specificity.Post-surgery pathological diagnosis was the reference standard and breast cancer staging followed the TNM classification.There was no restriction on disease stage for eligibilities.Results:We included 2667 inpatients with breast lesions,2378 patients with other solid tumors,and 1168 healthy participants.Specifically,118 patients with breast cancer were diagnosed with stage 0(5.71%),620 with stage I(30.00%),966 with stage II(46.73%),217 with stage III(10.50%),and 8 with stage IV(0.39%).Patients with breast cancer had significantly higher serum SEMA4C levels than benign breast tumor patients and normal controls(P<0.001).Elevated serum SEMA4C levels had AUC of 0.920(95%confidence interval[CI]:0.900–0.941)and 0.932(95%CI:0.911–0.953)for breast cancer detection in the two validation cohorts.The AUCs for detecting early-stage breast cancer(n=366)and ductal carcinoma in situ(n=85)were 0.931(95%CI:0.916–0.946)and 0.879(95%CI:0.832–0.925),respectively.Serum SEMA4C levels significantly decreased after surgery,and the reduction was more striking after modified radical mastectomy,compared with mass excision(P<0.001).The positive rate of enhanced serum SEMA4C levels was 84.77%for breast cancer and below 20.75%for the other 14 solid tumors.Conclusions:Serum SEMA4C demonstrated promising potential as a candidate biomarker for breast cancer diagnosis.However,validation in prospective settings and by other study groups is warranted. | Ya Wang Long Qiao Jie Yang Xiong Li Yaqi Duan Jiahao Liu Shaoqi Chen Huayi Li Dan Liu Tian Fang Jingjing Ma Xiaoting Li Fei Ye Junxiang Wan Juncheng Wei Qin Xu Ensong Guo Ping Jin Mingfu Wu Lin Zhang Yun Xia Yaqun Wu Jun Shao Yaojun Feng Qing Zhang Zongyuan Yang Gang Chen Qinghua Zhang Xingrui Li Shixuan Wang Junbo Hu Xiaoyun Wang Mona P.Tan Kazuaki Takabe Beihua Kong Qifeng Yang Ding Ma Qinglei Gao | 2021 | Cancer Communications2021，41，12： | 3 |
| 9 | Highly selective adsorption of CO over N2 on CuCl-loaded SAPO-34 adsorbent显示文摘Carbon monoxide(CO)/N2 separation is of importance for current chemical industry.However, CO/N2 separation remains a challenge due to the similar molecular size and the small variance of volatility of CO and N2.In this work, molecular sieve SAPO-34 was loaded with CuCl by monolayer dispersion method for the preparation of Cu(I) containing adsorbents.The resulted adsorbents were characterized via nitrogen adsorption/desorption at 77 K, X-ray fluorescence(XRF) and X-ray diffraction(XRD).The results indicated that CuCl was successful loaded into the molecular sieve and well-dispersed.CO and N2 single component adsorption isotherms were recorded under 298 K, 308 K and 318 K by using volumetric method.One of the CuCl-loaded SAPO-34 adsorbent exhibited a very high CO adsorption capacity of 1.84 mmol/g at 100 kPa,298 K and high CO/N2 selectivity. | Yaqi Wu Zhaoan Chen Bing Li Jiacheng Xing Hanbang Liu Yansi Tong Peng Tian Yunpeng Xu Zhongmin Liu | 2019 | Journal of Energy Chemistry2019，28，9： | 3 |
| 10 | The Influencing Factors of sCER Price Dynamics Under the Clean Development Mechanism: Theory and Econometric Analysis显示文摘 | ZHANG Chen WU Yaqi YANG Yu | 2018 | Journal of Systems Science & Complexity2018，31，5： | 3 |
| 11 | Impact of Land Use Change on Vegetation Carbon Storage During Rapid Urbanization:A Case Study of Hangzhou,China显示文摘Land use changes have significant impacts on the carbon balance in an urban ecosystem.When there is rapid development in urbanizing regions,land use changes have a dramatic effect on vegetation carbon storage(VCS).This study investigates the impact of land use change on VCS in a period of rapid urbanization in Hangzhou,China.The results show that:1)from 2000 to 2015,land use in Hangzhou underwent huge changes,mainly reflected in decrease in cropland and wetland and the increased settlement.More than 34.58%of the land was transformed,and the land use changes are primarily characterized by a significant decrease in cropland due to the occupation by settlement.2)over the 15 years,changes in land use led to a decrease of 3.93×10^(5) t of VCS in the urban ecosystem.The large-scale transformation of cropland and wetland,which have a comparatively high carbon density,into land for settlement exerted a negative impact on VCS.3)The central city,which with the Circle-E/I/O mode,had the lowest comprehensive land use dynamic degree,leading to moderate land use change and an increase in VCS;Yuhang and Xiaoshan,which with Multicore-E/O/I mode and Fan-E/O/I modes,had a higher comprehensive land use dynamic degree,drastic changes in land use,and a decrease in VCS.This study proposes a reliable method of estimating changes in VCS,clarifies the relationship between land use change and VCS during rapid urbanization,and provides recommendations for sustainable urban development. | WANG Zhi XU Lihua SHI Yijun MA Qiwei WU Yaqi LU Zhangwei MAO Liwei PANG Enqi ZHANG Qi | 2021 | Chinese Geographical Science2021，31，2： | 3 |
| 12 | Ent-kaurane and ent-abietane diterpenoids from Isodon phyllostachys显示文摘Four new diterpenoids, phyllostachysins I–L(1–4), along with a known one, hebeiabinin B(5), were isolated from the aerial parts of Isodon phyllostachys(I. phyllostachys). Compounds 1 and 2 feature an ent-kaurane backbone, and 3, 4 and 5 bear an ent-abietane skeleton. Their structures were elucidated by means of spectroscopic analysis. Compounds 3 and 4 exhibited significant cytotoxic activity against human tumor cell lines(HL-60, SMMC-7721, A-549, MCF-7 and SW-480), and strongly inhibited NO production in LPS-stimulated RAW264.7 cells. | Jin Yang Yaqi An Haiyan Wu Miao Liu Weiguang Wang Xue Du Yan Li Jianxin Pu Handong Sun | 2016 | Science China Chemistry2016，59，9： | 2 |
| 13 | The RNF20/40 complex regulates p53-dependent gene transcription and mRNA splicing显示文摘p53 is a key transcription factor to regulate gene transcription.However,the molecular mechanism of chromatin-associated p53 on gene transcription remains elusive.Here,using unbiased protein affinity purification,we found that the RNF20/40 complex associated with p53 on the chromatin.Further analyses indicated that p53 mediated the recruitment of the RNF20/40 complex to p53 target gene loci including p21 and PUMA loci and regulated the transcription of p21 and PUMA via the RNF20/40 complex-dependent histone H2B ubiquitination(ubH2B).Lacking the RNF20/40 complex suppressed not only ubH2B but also the generation of the mature mRNA of p21 and PUMA.Moreover,ubH2B was recognized by the ubiquitin-binding motif of pre-mRNA processing splicing factor 8(PRPF8),a subunit in the spliceosome,and PRPF8 was required for the maturation of the mRNA of p21 and PUMA.Our study unveils a novel p53-dependent pathway that regulates mRNA splicing for tumor suppression. | Chen Wu Yaqi Cui Xiuhua Liu Feng Zhang Lin-Yu Lu Xiaochun Yu | 2020 | Journal of Molecular Cell Biology2020，12，2： | 2 |
| 14 | Adjuvant chemotherapy may improve outcome of patients with non-small-cell lung cancer with metastasis of intrapulmonary lymph nodes after systematic dissection of N1 nodes显示文摘Objective: Survival benefit of adjuvant chemotherapy(AC) of patients with intrapulmonary lymph node(IPLN)metastasis(level 12-14) needs investigation.We evaluated the impact of AC on patients whose metastatic nodes were limited to intrapulmonary levels after systematic dissection of N1 nodes.Methods: First,155 consective cases of lung cancer confirmed as pathologic N1 were collected and evaluated.Patients received systematic dissection of N2 and N1 nodes.For patients with IPLN metastasis,survival outcomes were compared between those receiving AC and those not receiving AC.Results: In this group,112 cases(72.3%) had IPLN metastasis and 55 cases(35.5%) had N1 involvement limited to level 13-14 without further disease spread to higher levels.Patients with IPLN involvement had a better prognosis than that of patients with hilar-interlobar involvement.For the intrapulmonary N1 group(level 12-14-positive,level 10-11-negative or unknown,n=112),no survival benefit was found between the AC group and nonAC group [5-year overall survival(OS): 54.6±1.6 vs.50.4±2.4 months,P=0.177].However,76 of 112 cases for whom harvesting of level-10 and level-11 nodes was done did not show cancer involvement in pathology reports(level 12-14-positive,level 10-11 both negative),oncologic outcome was better for patients receiving AC than those not receiving AC in this subgroup(5-year OS: 57.3±1.5 vs.47.1±3.2 months,P=0.002).Conclusions: Oncologic outcome may be improved by AC for patients with involvement of N1 nodes limited to intrapulmonary levels after complete examination of N1 nodes. | Xing Wang Shi Yan Yaqi Wang Xiang Li Chao Lyu Yuzhao Wang Jia Wang Shaolei Li Lijian Zhang Yue Yang Nan Wu | 2018 | Chinese Journal of Cancer Research2018，30，6： | 2 |
| 15 | Current Situation and Countermeasures for the Development of Ecological Circular Agriculture in Zhejiang Province显示文摘Based on the analysis of present situation of ecological circular agriculture development in Zhejiang Province,the problems of limited resources,backward technology and capital shortage were proposed,and the solutions were put forward to promote the construction of modern agriculture industry system and accelerate the change from the traditional agriculture model to ecological circular agriculture model,such as choosing suitable development models according to local conditions,promoting the construction of agricultural demonstration zones,improving ecological technology,and strengthening the comprehensive utilization of resources and farming system innovation. | Shuqiong Qian Fangfang Zhang Yaqi Wu Jia Jia Shengdao Shan | 2013 | Meteorological and Environmental Research2013，4，1： | 2 |
| 16 | Post-synthesis and structural evolution of hollow titanium silicalite-1 with solvent-free method显示文摘Generating hollow structure inside titanium silicalite-1(TS-1)is a widely used method to improve its liquid-phase oxidation catalytic performance in industry.However,traditional dissolution-recrystallization method usually required a large amount of aqueous solution of organic template,leading to unfavorable polluted waste,low production efficiency,and high manufacture cost.Here,a facile and environmental friendly strategy was proposed for the post-synthesis of hollow TS-1 zeolite with a solventfree method utilizing NH4HCO3 and tetrapropylammounium bromide as selective etching agents,which reduced the usage of organic template and avoided the liquid waste.The high crystallinity,the microporous structure,and the active Ti sites were preserved at a high product yield(>93%).The formation mechanism of hollow structure was also investigated by exploring effects of different reactants and experimental parameters.Meanwhile,the obtained hollow TS-1 showed an outstanding performance in the epoxidation of 1-hexene in comparison to the parent zeolite. | Yaqi Fan Xianchen Gong Xiaomeng Si Changjiu Xia Peng Wu Yanhang Ma | 2023 | Nano Research2023，16，1： | 1 |
| 17 | 显示文摘 | Gao Ming Wo Yaqi Wu Weihong | 2011 | Journal of Applied Poly- mer Science2011，119，4： | 1 |
| 18 | Microcap- sulation of Intumescent Flame-retardant Agent and Application to Epoxy Resins 显示文摘 | GAO MING WO YAQI WU WEIHONG | 2011 | Journal of Applied Polymer Science2011，119，4： | 1 |
| 19 | Enlarging grain sizes for efficient perovskite solar cells by methylamine chloride assisted recrystallization显示文摘The quality of MAPbI3 film prepared by solvent engineering process highly depends on environment and antisolvent control.Here,we provided a simple methylamine chloride(MACl)solution treatment using a two-step process to enlarge the perovskite crystal grain sizes to more than 1 lm.Other than treatment on the film surface,the MACl solution diffuses into the MAPbI_(3) films to assist the recrystallization of small crystal at the bottom of perovskite film.The imitative contact between perovskite and substrate is formed.Meanwhile,the enlargement of grain size and ten times enhancement of crystalline reduce trap-assisted recombination of perovskite films.Thus,the significant improvement of cell efficiency of 20.89%as well as device stability is obtained with the MACl treatment. | Gao Wu Molang Cai Yujia Cao Zhuoxin Li Zhongyan Zhang Weng Yang Xianggang Chen Dongxu Ren Yaqi Mo Miao Yang Xuepeng Liu Songyuan Dai | 2022 | Journal of Energy Chemistry2022，31，2： | 1 |
| 20 | Sensitive and Selective Determination of Cu^(2+) Using Self-Assembly of 4-Mercaptobenzoic Acid on Gold Nanoparticles显示文摘Cu^(2+)is a bio-accumulative and toxic environmental pollutant,so its sensitive and selective detection is of great importance.In this work,gold nanoparticles were electrochemically deposited on fluorine-doped tin oxide and characterized by scanning electron microscope and cyclic voltammetry.4-Mercaptobenzoic acid(4-MBA),which contained carboxyl chelator,was self-assembled on the surface of gold nanoparticles through S-Au bond.The strong chelation of Cu^(2+)with 4-MBA formed a stable Cu^(2+)-4-MBA complex,which was confirmed by energy-dispersive X-ray spectroscopy.Square wave voltammetry was applied to determine the concentration of Cu^(2+).Under optimized condition,the oxidation peak current was proportional to the concentration of Cu^(2+)in the range of 10-1500 nM with limit detection of 8 nM.The proposed electrochemical sensor showed excellent selectivity towards Cu^(2+).In addition,the applicability of the developed sensor was evaluated by determin-ing the concentrations of Cu^(2+)in river water samples,which were consistent with the results of inductively coupled plasma mass spectroscopy. | Mi Zhou Long Han Haibo He Dongmei Deng Lin Zhang Xiaoxia Yan Zhenyu Wu Yaqi Zhu Liqiang Luo | 2019 | Journal of Analysis and Testing2019，3，4： | 1 |
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