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| 1 | Chemical characteristics and source apportionment of PM_(2.5) in a petrochemical city: Implications for primary and secondary carbonaceous component显示文摘To study the pollution features and underlying mechanism of PM_(2.5) in Luoyang, a typical developing urban site in the central plain of China, 303 PM_(2.5) samples were collected from April 16 to December 29, 2015 to analyze the elements, water soluble inorganic ions, organic carbon and elemental carbon. The annual mean concentration of PM_(2.5) was 142.3 μg/m^(3), and 75% of the daily PM_(2.5) concentrations exceeded the 75 μg/m^(3). The secondary inorganic ions, organic matter and mineral dust were the most abundant species, accounting for 39.6%, 19.2% and 9.3% of the total mass concentration, respectively. But the major chemical components showed clear seasonal dependence. SO_(4)^(2-) was most abundant specie in spring and summer, which related to intensive photochemical reaction under high O_3 concentration. In contrast, the secondary organic carbon and ammonium while primary organic carbon and ammonium significantly contributed to haze formation in autumn and winter, respectively. This indicated that the collaboration effect of secondary inorganic aerosols and carbonaceous matters result in heavy haze in autumn and winter. Six main sources were identified by positive matrix factorization model: industrial emission, combustion sources, traffic emission, mineral dust, oil combustion and secondary sulfate, with the annual contribution of 24%, 20%, 24%, 4%, 5% and 23%, respectively. The potential source contribution function analysis pointed that the contribution of the local and short-range regional transportation had significant impact. This result highlighted that local primary carbonaceous and precursor of secondary carbonaceous mitigation would be key to reduce PM_(2.5) and O_3 during heavy haze episodes in winter and autumn. | Guangxuan Yan Puzhen Zhang Jie Yang Jingwen Zhang Guifen Zhu Zhiguo Cao Jing Fan Zirui Liu Yuesi Wang | 2021 | Journal of Environmental Sciences2021，33，5： | 6 |
| 2 | Construction of Self-Assembly Based Tunable Absorber:Lightweight,Hydrophobic and Self-Cleaning Properties显示文摘Although multifunctional aerogels are expected to be used in applications such as portable electronic devices,it is still a great challenge to confer multifunctionality to aerogels while maintaining their inherent microstructure.Herein,a simple method is proposed to prepare multifunctional NiCo/C aerogels with excellent electromagnetic wave absorption properties,superhydrophobicity,and self-cleaning by water-induced NiCo-MOF self-assembly.Specifically,the impedance matching of the three-dimensional(3D)structure and the interfacial polarization provided by CoNi/C as well as the defect-induced dipole polarization are the primary contributors to the broadband absorption.As a result,the prepared NiCo/C aerogels have a broadband width of 6.22 GHz at 1.9 mm.Due to the presence of hydrophobic functional groups,CoNi/C aerogels improve the stability in humid environments and obtain hydrophobicity with large contact angles>140°.This multifunctional aerogel has promising applications in electromagnetic wave absorption,resistance to water or humid environments. | Zehua Zhou Qianqian Zhu Yue Liu Yan Zhang Zirui Jia Guanglei Wu | 2023 | Nano-Micro Letters2023，15，9： | 5 |
| 3 | Electrospun Fe_(0.64)Ni_(0.36)/MXene/CNFs nanofibrous membranes with multicomponent heterostructures as flexible electromagnetic wave absorbers显示文摘Two-dimensional metal carbide or nitride materials(MXenes)are widely used in electromagnetic wave absorption because of their unique structure.Herein,a novel composite preparation strategy has been proposed to design dendritic nanofibers based on the electrostatic spinning methods.The multifunctional MXene nanosheets are used as the dendritic matrix,and magnetic nanoparticles are embedded in the nanosheets as magnetic loss units.Multidimensional nanocomposites have interlaced carbon fiber networks,large-scale magnetically coupled networks,and a lot of multi-heterojunction interface structures,which endow the composites with extraordinary conduction loss,magnetic loss,and polarization loss capabilities,respectively.The impedance matching and loss mechanisms of the composites are improved by optimizing the synergistic relationship between the components and building a suitable structure.The optimum reflection loss(RL)of−54.1 dB is achieved at 2.7 mm and a wide effective absorption bandwidth(EAB,RL below−10 dB)of 7.76 GHz is obtained at a small thickness of 2.1 mm for the nanocomposites.The distinctive microstructures of the nanofibrous membranes give rise to their flexibility,waterproof,and electromagnetic wave absorption performance and endow the nanofibrous membranes potential to be utilized as lightweight,efficient electromagnetic wave protective fabric in harsh environment. | Shuo Zhang Zirui Jia Yan Zhang Guanglei Wu | 2023 | Nano Research2023，16，2： | 4 |
| 4 | Construction of NiCeO_(x) nanosheets-skeleton cross-linked by carbon nanotubes networks for efficient electromagnetic wave absorption显示文摘In this work,two-dimensional NiCeOx nanosheet-modified carbon nanotubes(CNTs)composites were prepared by a hydrothermal method.NiCeOx with different morphologies can be formed by adjusting the addition ratio of nickel salt and cerium salt,and the introduction of CNTs in the subsequent synthesis process can effectively prevent the aggregation of NiCeOx nanosheets.Microstructural studies show that hexagonal NiCeOx nanosheets with a size of 100 nm are uniformly intertwined with CNTs.When applied to the attenuation of electromagnetic waves,NiCeOx/CNTs composites exhibit better electromagnetic wave(EMW)absorption performance than pure CNTs and NiCeOx nanosheets due to improved impedance matching and multiple polarization relaxation.At the matching thickness of 1.9 mm,the composite exhibits a minimum reflection loss(RL_(min))of–53.2 dB and an effective absorption bandwidth(RL<–10 dB)of 5.04 GHz with a thickness of 2.3 mm.These results indicate that the as-prepared NiCeOx/CNTs composites have excellent EMW absorption performance and are expected to be a candidate material for EMW absorption. | Xinmeng Huang Xuehua Liu Yan Zhang Jixi Zhou Guanglei Wu Zirui Jia | 2023 | Journal of Materials Science & Technology2023，，16： | 3 |
| 5 | Chemical characterization and source identification of PM_(2.5) in Luoyang after the clean air actions显示文摘Luoyang is a typical heavy industrial city in China,with a coal-dominated energy structure and serious air pollution.Following the implementation of the clean air actions,the physic-ochemical characteristics and sources of PM_(2.5) have changed.A comprehensive study of PM_(2.5) was conducted from October 16,2019 to January 23,2020 to evaluate the effectiveness of previous control measures and further to provide theory basis for more effective policies in the future.Results showed that the aerosol pollution in Luoyang in autumn and win-ter is still serious with the average concentration of 91.1 μg/m^(3),although a large reduction(46.9%)since 2014.With the contribution of nitrate increased from 12.5%to 25.1%and sul-fate decreased from 16.7%to 11.2%,aerosol pollution has changed from sulfate-dominate to nitrate-dominate.High NO_(3)^(-)/SO_(4)^(2-)ratio and the increasing of NO_(3)^(-)/SO_(4)^(2-)ratio with the aggravation of pollution indicating vehicle exhaust playing an increasingly important role in PM_(2.5) pollution in Luoyang,especially in the haze processes.Secondary inorganic ions contributed significantly to the enhancement of PM_(2.5) during the pollution period.The high value of Cl^(-)/Na^(+)and EC concentration indicate coal combustion in Luoyang is still serious.The top three contributor sources were secondary inorganic aerosols(33.3%),coal combus-tion(13.6%),and industrial emissions(13.4%).Close-range transport from the western and northeastern directions were more important factors in air pollution in Luoyang during the sampling period.It is necessary to strengthen the control of coal combustion and reduce vehicle emissions in future policies. | Min Xu Zirui Liu Bo Hu Guangxuan Yan Jianan Zou Shuman Zhao Jingxiang Zhou Xianhui Liu Xueping Zheng Xiaoyan Zhang Jing Cao Mengshuang Guan Yirong Lv Yanyun Zhang | 2022 | Journal of Environmental Sciences2022，34，5： | 1 |
| 6 | Expression of heat-resistant β-glucosidase in Escherichia coli and its application in the production of gardenia blue显示文摘Gardenia blue is a natural blue pigment that is environmentally friendly,non-toxic,and stable.The hydrolysis of geniposide,catalyzed byβ-glucosidase,is a critical step in the production process of gardenia blue.However,β-glucosidase is not resistant to high temperatures,limiting the production of gardenia blue.In this study,we investigated the effectiveness of a heat-resistant glucosidase obtained from Thermotoga maritima in the production of gardenia blue.The enzyme exhibited a maximum activity of 10.60 U/mL at 90℃.Single-factor and orthogonal analyses showed that exogenously expressed heat-resistant glucosidase reacted with 470.3μg/mL geniposide and 13.5μg/mL glycine at 94.2℃,producing a maximum yield of 26.2857μg/mL of gardenia blue after 156.6 min.When applied to the dyeing of denim,gardenia blue produced by this method yielded excellent results;the best color-fastness was achieved when an iron ion mordant was used.This study revealed the feasibility and application potential of microbial production of gardenia blue. | Wenxi Li Jielin Li Ying Xu Yan Huang Shuqi Xu Zirui Ou Xiaoli Long Xinyu Li Xinyu Liu Zening Xiao Jiaqi Huang Weizhao Chen | 2021 | Synthetic and Systems Biotechnology2021，6，3： | 1 |
| 7 | Mg-based inorganic nanofibers constructing fast and multi-dimensional ion conductive pathways for all-solid-state lithium metal batteries显示文摘Solid-state electrolytes(SSEs),which replace flammable and toxic liquid electrolytes,have attracted widely attention.However,there exist still some challenges in actual application such as poor interfacial compatibility and slow ionic migration.In this study,Mg O nanofibers and MgF;nanofibers were prepared via the electro-blow spinning and high-temperature calcination methods,and were applied to all-solid-state lithium metal batteries for the first time.The organic-inorganic composite SSEs exhibited continuous conduction paths based on the virtue of the nanofibers with high length-to-diameter ratio,which were designed and prepared by mixing prepared fillers into the poly(ethylene oxide)(PEO)/lithium bis(trifluoromethane)sulfonilimide(Li TFSI)system.The effect of filler with different morphologies,doping ratios and component on ionic conductivity,electrochemical stability and cycle performance were explored under two kinds of[EO]/[Li^(+)]ratios and ambient temperatures.The ionic conductivities of electrolytes containing Mg O and MgF;nanofibers can reach up to 1.19×10^(-4) and 1.39×10^(-4) S cm^(-1) at 30℃,respectively.They were attributed to specific ionic conductive enhancement at the organicinorganic interface,reduced crystallinity and Lewis acid interaction,which can effectively promote the dissociation of the lithium salts.Especially MgF_(2) nanofiber,combining low electronic conductance,excellent electrochemical stability and outstanding inhibition for lithium dendrites of fluorides,endowed the battery with an initial specific capacity of 140.6 m Ah g^(-1) and capacity decay rate per cycle of 0.055%after500 cycles at 50℃.The work can provide an idea to design SSE with fast and multi-dimensional Li conductive paths and excellent interfacial compatibility. | Wen Yu Nanping Deng Zirui Yan Lu Gao Kewei Cheng Xiaohui Tian Lin Tang Bowen Cheng Weimin Kang | 2022 | Journal of Energy Chemistry2022，31，4： | 1 |
| 8 | GRB 220408B:A Three-episode Burst from a Precessing Jet显示文摘Jet precession has previously been proposed to explain the apparently repeating features in the light curves of a few gamma-ray bursts(GRBs).In this paper,we further apply the precession model to a bright GRB 220408B by examining both its temporal and spectral consistency with the predictions of the model.As one of the recently confirmed GRBs observed by our GRID CubeSat mission,GRB 220408B is noteworthy as it exhibits three apparently similar emission episodes.Furthermore,the similarities are reinforced by their strong temporal correlations and similar features in terms of spectral evolution and spectral lags.Our analysis demonstrates that these features can be well explained by the modulated emission of a Fast-Rise-Exponential-Decay(FRED)shape light curve intrinsically produced by a precessing jet with a precession period of 18.4_(-0.2)~(+0.2)s,a nutation period of11.1_(-0.2)~(+0.2)s and viewed off-axis.This study provides a straightforward explanation for the complex yet similar multiepisode GRB light curves. | Zijian Zhang Yi-Han Iris Yin Chenyu Wang Xiangyu Ivy Wang Jun Yang Yan-Zhi Meng Zi-Ke Liu Guo-Yin Chen Xiaoping Fu Huaizhong Gao Sihao Li Yihui Liu Xiangyun Long Yong-Chang Ma Xiaofan Pan Yuanze Sun Wei Wu Zirui Yang Zhizhen Ye Xiaoyu Yu Shuheng Zhao Xutao Zheng Tao Zhou Qing-Wen Tang Qiurong Yan Rong Zhou Zhonghai Wang Hua Feng Ming Zeng Bin-Bin Zhang | 2023 | Research in Astronomy and Astrophysics2023，23，11： | 0 |
| 9 | Bucket Effect to Improve Third-Order Nonlinear Optical Response on Metal-Heteroaromatic Compounds显示文摘Carbolong compounds as a metal-heteroaromatic compound with both organometallic properties andπ-conjugated systems exhibit great potential in organic catalysis and optoelectronic devices.In this work,for the first time,the“Bucket Effect”is revealed to promote the third-order nonlinear optical(NLO)performance in metal-heteroaromatic compounds.We have successfully constructed and investigated a series of novel metallapentalenes with higher third-order NLO performance benefited from the“Bucket Effect”.Meanwhile,aromaticity and electron−hole analysis further confirm the internal homogeneity of organometallic rings,reduced bandgap,and enhanced low-energy peak response resulted in the enhanced third-order NLO effects.The success of this work is discovering an emerging material library of high third-order NLO effects,and illustrating the feasibility of engineering the high response metal-heteroaromatic optical devices at the electronic structure level. | Zirui Wang Yu-Hui Fang Huaxing Lin Guoxiang Zhao Weiyin Yan Zuju Ma Qiao-Hong Li Jian Zhang | 2022 | Chinese Journal of Chemistry2022，40，22： | 0 |
| 10 | Pharmacognostical Study on Stems and Leaves of Campsis grandiflora(Thunb.) Schum.显示文摘[Objectives] To provide basis for identification,development and use of Campsis grandiflora( Thunb.) Schum. [Methods]Original plants,traits,microstructures and UV spectra were used for identification. [Results]For the first time,the pharmacognostical characteristics were elaborated about stems and leaves of Campsis grandiflora( Thunb.) Schum. [Conclusions] This study is expected to provide basis for pharmacognostical quality standard of stems and leaves of Campsis grandiflora( Thunb.) Schum. | Zirui WU Jiangli NIE Haifeng WANG Yan DU Jinfeng MAO Yi PEI | 2017 | Medicinal Plant2017，8，5： | 0 |
| 11 | Self-assembly tungsten selenide hybrid ternary MOF derived magnetic alloys via multi-polarization to boost microwave absorption显示文摘Confronted with severe electromagnetic wave pollution,the development of high-performance electromagnetic wave shielding or absorbing materials is an effective way to deal with it.Notably,double transition metal alloys and transition metal dichalcogenides have attracted extensive attention in electromagnetic wave absorption,but few reports have studied the effects of these two materials on electromagnetic wave absorption at the same time.In this work,cobalt-based alloy with magnetic loss mechanism was selected for composition optimization.The ternary metal-organic framework was prepared by the one-step method,and then CoCu/C was prepared by high temperature annealing.Finally,in the hydrothermal process,ultra-thin tungsten selenide nanosheets were coated on the surface of magnetic component,and the final polyhedral WSe_(2)/CoCu/C composites with multiple heterogeneous interfaces were obtained.The synergistic effect of dielectric and magnetic components optimizes impedance matching and allows more electromagnetic waves to enter the absorber.Subsequently,through the conduction loss of high conductivity graphitized carbon,interfacial polarization,and dipole polarization of heterogeneous interfaces between the components,the magnetic loss provided by CoCu alloy can work together to maximize the attenuation ability of electromagnetic waves.Exactly,the minimum reflection loss(RLmin)value of the composite reaches-53.43 dB when the matched thickness is 2.1 mm,while the maximum effective absorption bandwidth(EABmax)reaches 6.0 GHz at a thin thickness of 1.8 mm.This work provides some support and reference for the design of novel electromagnetic wave absorbing materials via the dielectric/magnetic loss synergistic mechanism. | Tianbao Zhao Tingting Zheng Di Lan Yan Zhang Zhengshuo Sun Chao Wang Zirui Jia Guanglei Wu | 2024 | Nano Research2024，17，3： | 0 |
| 12 | Multiphase Interfacial Regulation Based on Hierarchical Porous Molybdenum Selenide to Build Anticorrosive and Multiband Tailorable Absorbers显示文摘Electromagnetic wave(EMW)absorbing materials have an irreplaceable position in the field of military stealth as well as in the field of electromagnetic pollution control.And in order to cope with the complex electromagnetic environment,the design of multifunctional and multiband high efficiency EMW absorbers remains a tremendous challenge.In this work,we designed a three-dimensional porous structure via the salt melt synthesis strategy to optimize the impedance matching of the absorber.Also,through interfacial engineering,a molybdenum carbide transition layer was introduced between the molybdenum selenide nanoparticles and the three-dimensional porous carbon matrix to improve the absorption behavior of the absorber.The analysis indicates that the number and components of the heterogeneous interfaces have a significant impact on the EMW absorption performance of the absorber due to mechanisms such as interfacial polarization and conduction loss introduced by interfacial engineering.Wherein,the prepared MoSe_(2)/MoC/PNC composites showed excellent EMW absorption performance in C,X,and Ku bands,especially exhibiting a reflection loss of−59.09 dB and an effective absorption bandwidth of 6.96 GHz at 1.9 mm.The coordination between structure and components endows the absorber with strong absorption,broad bandwidth,thin thickness,and multi-frequency absorption characteristics.Remarkably,it can effectively reinforce the marine anticorrosion property of the epoxy resin coating on Q235 steel substrate.This study contributes to a deeper understanding of the relationship between interfacial engineering and the performance of EMW absorbers,and provides a reference for the design of multifunctional,multiband EMW absorption materials. | Tianbao Zhao Zirui Jia Jinkun Liu Yan Zhang Guanglei Wu Pengfei Yin | 2024 | Nano-Micro Letters2024，16，1： | 0 |
| 13 | Interfacial synergism of hollow mesoporous Pt/WO_(x)/SiO_(2)-TiO_(2)catalysts enable highly selective hydrogenolysis of glycerol to 1,3-propanediol显示文摘The selective hydrogenolysis of glycerol exhibits great prospects,while the catalysts with high selectivity and activity are still missing and need to be created urgently.Herein,we report the synthesis of hollow mesoporous Pt/WO_(x)/SiO_(2)-TiO_(2)nanosphere catalysts with bi-functional interfaces synergistically for high efficiency conversion of glycerol to 1,3-propanediol.The hollow mesoporous Pt/WO_(x)/SiO_(2)-TiO_(2)catalysts show a typical brick-concrete liked framework with a high surface area(179.3 m^(2)·g^(-1)),large mesopore size(10.6 nm),uniform particle size(~400 nm),and ultrathin shell thickness(~75 nm).The brick anatase nanocrystals and concrete amorphous SiO_(2)networks can selectively rivet Pt nanoparticles and WO_(x)nanocluster species,respectively,thus constructing two interfaces for effective adsorption,rapidly catalytic dehydration and hydrogenation processes.The hollow mesoporous Pt/WO_(x)/SiO_(2)-TiO_(2)catalysts deliver a high selectivity of 53.8%for 1,3-propanediol(1,3-PDO)at a very high glycerol conversion of 85.0%.As a result,a favorable 1,3-PDO yield of 45.7%can be obtained with excellent stability,which is among the best performances of previously reported catalysts.This work paves a new way to synthesize catalysts with high selectivity,high activity and high stability. | Yan Chen Yang Zeng Chin-Te Hung Zhenghao Zhang Zirui Lv Senchuan Huang Yi Yang Yupu Liu Wei Li | 2023 | Nano Research2023，16，7： | 0 |
| 14 | Adjacent Pt Nanoparticles and Sub-nanometer WO_(x)Clusters Determine Catalytic Isomerization of C_(7)H_(16)显示文摘Processes for the isomerization of light alkanes have been commercialized;however,the isomerization of paraffins(C_(n)H_(2n+2),n≥7)remains a challenge.On mesoporous tungsten-zirconia catalyst supported Pt catalysts(Pt/WZrOx),initial isomerization productivity of 5249 moli-C7/molPt/h was obtained for n-heptane reforming at 275°C and 5 bar of hydrogen. | Bin Zhang Wei Zhou Jie Zhang Zirui Gao Danyang Cheng Lipeng Tang Xingwu Liu Yueqin Song Chunyang Dong Yao Xu Jie Yan Mi Peng Huizhen Liu Mark Douthwaite Meng Wang Ding Ma | 2022 | CCS Chemistry2022，4，8： | 0 |
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