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| 1 | Effects of particle composition and environmental parameters on catalytic hydrodechlorination of trichloroethylene by nanoscale bimetallic Ni-Fe显示文摘Catalytic nickel was successfully incorporated into nanoscale iron to enhance its dechlorination efficiency for trichloroethylene(TCE), one of the most commonly detected chlorinated organic compounds in groundwater. Ethane was the predominant product. The greatest dechlorination efficiency was achieved at 22 molar percent of nickel. This nanoscale Ni-Fe is poorly ordered and inhomogeneous; iron dissolution occurred whereas nickel was relatively stable during the 24-hr reaction. The morphological characterization provided significant new insights on the mechanism of catalytic hydrodechlorination by bimetallic nanoparticles. TCE degradation and ethane production rates were greatly affected by environmental parameters such as solution pH, temperature and common groundwater ions. Both rate constants decreased and then increased over the pH range of 6.5 to 8.0, with the minimum value occurring at pH 7.5. TCE degradation rate constant showed an increasing trend over the temperature range of 10 to 25?C. However, ethane production rate constant increased and then decreased over the range, with the maximum value occurring at 20?C. Most salts in the solution appeared to enhance the reaction in the first half hour but overall they displayed an inhibitory effect. Combined ions showed a similar effect as individual salts. | Jianjun Wei Yajing Qian Wenjuan Liu Lutao Wang Yijie Ge Jianghao Zhang Jiang Yu Xingmao Ma | 2014 | Journal of Environmental Sciences2014,26,5: | 9 |
| 2 | Controlling dispersion and morphology of MoS2 nanospheres by hydrothermal method using SiO2 as template显示文摘Monodispersed MoS_2 nanospheres were successfully synthesized by using SiO_2 as hard template. The size and morphology of the MoS_2 nanospheres could be finely controlled by the content of SiO_2 and sulfur precursors. Furthermore, higher surface area of monodispersed MoS_2 nanospheres exhibited high reaction rate for hydrodesulfurization(HDS) of dibenzenethiophene(DBT). | Zhenwei Zhang Peng Wang Fei Wang Yaqing Li Wei Lu Xingmao Jiang Xia Gui Zhi Yun | 2018 | Chinese Journal of Chemical Engineering2018,26,5: | 3 |
| 3 | An Organic Solvent-Assisted Intercalation and Collection (OAIC) for Ti_(3)C_(2)T_(x) MXene with Controllable Sizes and Improved Yield显示文摘A good method of synthesizing Ti_(3)C_(2)T_(x)(MXene)is critical for ensuring its success in practical applications,e.g.,electromagnetic interference shielding,electrochemical energy storage,catalysis,sensors,and biomedicine.The main concerns focus on the moderation of the approach,yield,and product quality.Herein,a modified approach,organic solvent-assisted intercalation and collection,was developed to prepare Ti_(3)C_(2)T_(x) flakes.The new approach simultaneously solves all the concerns,featuring a low requirement for facility(centrifugation speed<4000 rpm in whole process),gram-level preparation with remarkable yield(46.3%),a good electrical conductivity(8672 S cm^(−1)),an outstanding capacitive performance(352 F g^(−1)),and easy control over the dimension of Ti_(3)C_(2)T_(x) flakes(0.47–4.60μm^(2)).This approach not only gives a superb example for the synthesis of other MXene materials in laboratory,but sheds new light for the future mass production of Ti_(3)C_(2)T_(x) MXene. | Danyao Qu Yingying Jian Lihao Guo Chen Su Ning Tang Xingmao Zhang Wenwen Hu Zheng Wang Zhenhuan Zhao Peng Zhong Peipei Li Tao Du Hossam Haick Weiwei Wu | 2021 | Nano-Micro Letters2021,13,11: | 2 |
| 4 | Totally Laparoscopic Resection With Natural Orifice Specimen Extraction for Carcinoma of Sigmoid Colon and Rectum: A Feasible and Innovative Technique显示文摘 | Xingmao Zhang Haitao Zhou Huirong Hou Junjie Hu Hongying Wang Zhixiang Zhou | 2014 | Journal of Clinical Gastroenterology2014,,7: | 1 |
| 5 | Polyetheramide Templated Synthesis of Monodisperse Mn_3O_4 Nanoparticles with Controlled Size and Study of the Electrochemical Properties显示文摘Monodisperse Mn3O4 nanoparticles were prepared solvothermally starting from manganese acetate by using polyether amide block copolymers(Pebax2533) as a template in isopropanol. The diameter of the nanoparticles in the range of 8.7 nm^31.5 nm was decreased with increase of Pebax2533 concentration.The electrochemical properties and application in supercapacitor of Mn3O4 nanoparticles were further studied.The results showed that smaller nanoparticles had a larger capacitance. The higher capacitance of 217.5 F/g at a current density of 0.5 A/g was obtained on 8.7 nm Mn3O4 nanoparticles. The specific capacitance retention of 82% was maintained after 500 times of continuous charge-discharge cycles. | Lin He Geng Zhang Yuanzhu Dong Zhenwei Zhang Shihan Xue Xingmao Jiang | 2014 | Nano-Micro Letters2014,6,1: | 1 |
| 6 | Holey graphene oxide-templated construction of nano nickel-based metal–organic framework for highly efficient asymmetric supercapacitor显示文摘Metal–organic frameworks(MOFs)with redox-active metal sites and controllable crystalline structures make it possible to access the merits of highly-efficient electrode materials in electrochemical energy storage systems.However,most MOFs suffer from low capacitance and poor cycling stability that largely thwart their application.Herein,we present the holey graphene oxide(HGO)template strategy to prepare nano two-dimensional Ni(BDC)with HGO as both template and capping agent(denoted as Ni(BDC)-HGOx,x=10,20,30,and 40 according to the added HGO amount).Structural analyses reveal that HGO can significantly inhibit the Ni(BDC)agglomeration,thus offering a high ion-accessible surface area.Ni(BDC)-HGO30 with well-exposed active sites exhibits a high capacitance of 1,115.6 F·g^(−1) at 1 A·g^(−1) in 6 M KOH aqueous,1.8 times that of bulk Ni(BDC).An asymmetric supercapacitor with Ni(BDC)-HGO30 as a positive electrode and activated carbon as the opposing electrode delivers an energy density of 52.5 W·h·kg^(−1) and a power density up to 18.0 kW·kg−1,with 92.5%capacitance retention after 10,000 cycles.Galvanostatic intermittent titration technique and in situ electrochemical–Raman measurements were exploited to elucidate the electrochemical behavior of Ni(BDC)-HGO30.These results pave the way for the development of rationally tuned MOF materials for enhancing supercapacitor performances. | Hang Wang Pengfei Zhao Xingmao Zhang Su Zhang Xiaolong Lu Zhipeng Qiu Kang Ren Zheng Xu Ruxin Yao Tong Wei Zhuangjun Fan | 2022 | Nano Research2022,15,10: | 1 |
| 7 | Phytotoxicity, accumulation and transport of silver nanoparticles by Arabidopsis thaliana显示文摘 | Jane Geisler-Lee Qiang Wang Ying Yao Wen Zhang Matt Geisler Kungang Li Ying Huang Yongsheng Chen Andrei Kolmakov Xingmao Ma | 2012 | Nanotoxicology2012,,3: | 1 |
| 8 | Concentrations and Distribution of Trace Metals of PM10 and TSP Particles Collected in the Qingdao Area显示文摘Aerosol samples of PM10(particulate matter with aerodynamic diameters less than 10μm) and TSP(total suspened particles) were simultaneously collected from April 2001 to March 2002 at the top of Mount Baguan on the downtown campus of Ocean University of China, Qingdao, China. The concentrations of Al, Fe, Mn, Cu, Pb and Zn were determined by means of inductively coupled plasma atomic emission spectrometry (ICP-AES). The monthly variability of the mass concentrations of aerosol particles and the concentrations of trace metals are presented and discussed. The distribution pattern of these metals in PM10 and TSP is also discussed. During the observation period, the mass concentration of PM10 at this site ranged from 13.80 to 306.42μgm 3 , while that of TSP ranged from 31.02 to 568.82μgm-3. Both PM10 and TSP reached their highest concentrations in springtime, while the lowest values occurred in summertime. The concentrations of crustal metals followed the same variation pattern, while those of anthropogenic metals did not. A closer examination led to the conclusion that anthropogenic metals are mainly from local sources. The average concentration ratios of anthropogenic metals in PM10 to TSP were higher than the average mass ratio of PM10 to TSP, suggesting that there was a higher proportion of anthropogenic metals on smaller particles although there were a few exceptions. For crustal metals, however, the metal concentration ratios were close to the particle mass ratio, indicating that the distribution of crustal metals was much more homogeneous on aerosol particles with different sizes. The correlation analysis indicated that Al, Fe and Mn were originated from similar sources and were mainly controlled by the particle mass, while Cu, Pb and Zn were predominated by local anthropogenic sources, with Pb and Zn having similar origins. | LI Xianguo, FENG Lijuan, QI Jianhua, CHEN Xingmao, ZHANG ManpingCollege of Chemistry & Chemical Engineering, Ocean University of China, Qingdao 266003, P.R.China | 2003 | Journal of Ocean University of Qingdao2003,2,2: | 1 |
| 9 | Carbon Nanotube-Textured Sand for Controlling Bioavailability of Contaminated Sediments显示文摘Sand particles textured with multi-walled carbon nanotubes (MWCNTs) can efficiently control the mobility and bioavailability of contaminants found in aquatic sediments. Adsorption measurements for a wide variety of aquatic contaminants (chlorinated hydrocarbons) on MWCNT-textured sand showed orders of magnitude increase in their sorption coefficients compared to traditional materials (sand) when used for physically separating contaminated sediments from overlying water. Molecular dynamics simulations performed on model experimental systems emphasize that the hydrophobic interactions of the MWCNT surfaces play a crucial role in driving the water molecules away, promoting such enhanced contaminant uptake. The MWCNT-textured sand significantly reduced the migration of contaminants from sediments to overlying water and possesses suitable parameters needed for contaminant sequestration and sediment remediation technologies. The single step and scalable procedure described here for synthesizing robust MWCNT-textured sand surfaces will provide important improvements in the field of remediation/aquatic environment restoration technologies. | Xingmao Ma Deepti Anand Xianfeng Zhang Mesfin Tsige Saikat Talapatra | 2010 | Nano Research2010,3,6: | 0 |
| 10 | The Current Situation and Development Prospect of Mechanized Foxtail Millet Seeding in China显示文摘Based on the analysis of the present application of millet mechanization planting machines, we summarized the basic situation of millet mechanization planting machines at present stage to improve of planting efficiency and develop mechanization, and made suggestions on millet sowing mechanization. | Haitao JIAO Jingzhe CHEN Junjie ZHANG Haiyan WU Xiaohe LI Xingmao YUAN Fazhi PENG Xiaohui HUANG Zhijie YANG Xiqun ZHANG | 2021 | Agricultural Biotechnology2021,10,1: | 0 |
| 11 | Supporting Seeder and Planting Technology for Spring Corn in Arid Areas显示文摘The annual rainfall is low and the fresh water resources are scarce for the rainfed farming in dry zone of northern China,which seriously affects the sowing and growth of spring corn. In order to solve this problem,the technology of ridge-mulching and side-sowing of spring corn is put forward,the supporting compound operation seeder is developed,and the effect of different speed on the quality of sowing is tested and analyzed. Under the test conditions described in this paper,the seeding operation with a high speed( up to 6 km/h) can be realized,and the quality of the seeding operation can meet the requirements of the national standards. The application of this machine can solve the problem of ' drought damage at the booting stage' for spring corn,thereby realizing the deep fusion of farming machine and agronomy in dry farming of northern China,and achieving the integration of farming machine and agronomy. | Xiuping ZHANG Lin CHEN Guochang FAN Xudong YAN Xingmao YUAN Yazhen ZHANG Yu XIAO Zile HAN | 2018 | Asian Agricultural Research2018,10,4: | 0 |
| 12 | In situ rapid versatile method for the preparation of zirconium metal-organic framework filters显示文摘The development of the rapid preparation of highly stable metal-organic framework(MOF)-based devices provides the possibility of meeting the increasing demands of MOF in industrial applications.However,MOFs experience poor processability and stable high-valence-metal(Ⅳ)-based MOFs favor forming either thermodynamically stable metal hydroxides or oxides during their growth and nucleation,which hinders their practical applications.Herein,we present a versatile deep eutectic solvent(DES)-assisted hot pressing method to in situ rapidly prepare six distinct zirconium-based MOF nanocrystals on fibers(denoted as Zr-MOFilters)within 20 min.A small amount of DES promotes MOF precursor contact and accelerates Zr-MOF growth.Temperature and pressure facilitate the formation of Zr-MOFs onto desired substrates.In situ1H nuclear magnetic resonance spectra and time-dependent Fourier-transform infrared spectra were conducted to elucidate the growth of Zr-MOF nanocrystals.As a proof-of-concept,the abilities of Zr-MOFilters for Cr_(2)O_(7)^(2−) and micro(nano)plastics removal have been demonstrated.This strategy paves the way for the rapid fabrication of highly stable MOF-based devices and brings MOFs a step closer to practical application. | Hang Wang Xingmao Zhang Ruxin Yao Shuang Zhao Pengfei Zhao Ruile Yang Lin Wang Yichao Huang Tong Wei Xiang Li Zhuangjun Fan Bo Wang | 2022 | Science China Chemistry2022,65,12: | 0 |
| 13 | Excimer Formation of Perylene Bisimide Dyes within Stacking-Restrained Folda-Dimers:Insight into Anomalous Temperature Responsive Dual Fluorescence显示文摘We have fabricated a new perylene bisimide(PBI)folda-dimer(BPBI-CB-1)by tethering two PBI moieties to the ortho-carbon positions of a carborane unit.The synthesized compound adopted distinct configurations in different solvents with dual emissions as its characteristic.The two PBI moieties in the molecule appeared either in a weakly interacted,monomer-like state or brought into close π-π contact with each other,forming an interacted stacking state.The equilibrium between these two states was governed by the nature of solvents and testing temperature.Spectroscopic and theoretical studies concluded that dual emission bands originated from intramolecular monomer-like and stacking states,respectively.Remarkably,in a solvent like 1,2-dichloroethane(DCE),both emission intensities increased with rising temperatures.The positive temperature response of the monomer emission was ascribed to an increased amount of monomer-like population,owing to its endothermic energy state,while the excimer emission was rationalized by increased population of the bright exciton state,resulting in an increased emission yield that compensated the diminished population of the stacking state.To our knowledge,this is the first report on positive temperature-responsive dual emissions associated with the synergism of intramolecular intersubunit aggregation/dissociation and excimer transformation. | Congdi Shang Gang Wang Yu-Chen Wei Qingwei Jiang Ke Liu Meiling Zhang Yi-Yun Chen Xingmao Chang Fengyi Liu Shiwei Yin Pi-Tai Chou Yu Fang | 2022 | CCS Chemistry2022,4,6: | 0 |