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Remediation of arsenic-contaminated paddy field by a new iron oxidizing strain(Ochrobactrum sp.)and iron-modified biochar

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Journal of Environmental Sciences 2022年第5期34卷 411-421页

作者： Kaikai Wu Chuan Wu xingxing jiang Rui Xue Weisong Pan Wai-Chin Li Xinghua Luo Shengguo Xue School of Metallurgy and Environment Central South UniversityChangsha 410083China Department of Science and Environmental Studies The Education University of Hong KongAdministrative RegionHong KongChina College of Environmental Sciences Sichuan Agricultural UniversityChengdu 611130China College of Bioscience and Biotechnology Hunan Agricultural UniversityChangsha 410125China

Iron-oxidizing strain(FeOB)and iron modified biochars have been shown arsenic(As)reme-diation ability in the ***,due to the complicated soil environment,few field experiment has been *** study was conducted to investigate the potential of iron modified biochar(BC-FeOS)and biomineralization by a new found FeOB to remediate As-contaminated paddy *** with the control,the As contents of G_(B)(BC-FeOS),G_(F)(FeOB),G_(FN)(FeOB and nitrogen fertilizer),G_(BF)(BC-FeOS and FeOB)and G_(BFN)(BC-FeOS,FeOB and nitrogen fertilizer)treatments in pore water decreased by 36.53%-80.03%and the microbial richness of iron-oxidizing bacteria in these treatments increased in soils at the rice maturation *** concentrations of available As of G_(B),G_(F),G_(FN),G_(BF) and G_(BFN) at the tillering stage were significantly decreased by 10.78%-55.48%.The concentrations of non-specifically absorbed and specifically absorbed As fractions of G_(B),G_(F),G_(FN),G_(BF) and G_(BFN) in soils were decreased and the amorphous and poorly crystalline hydrated Fe and Al oxidebound fraction was ***,the As contents of G_(B),G_(F),G_(FN),G_(BF) and G_(BFN) in rice grains were significantly decreased(*P<0.05)and the total As contents of G_(FN),G_(BF) and G_(BFN) were lower than the standard limit of the National Standard for Food Safety(GB 2762-2017).Compared with the other treatments,G_(BFN) showed the greatest potential for the effective remediation of As-contaminated paddy fields.

关键词： Arsenic Iron-modified biochar Iron-oxidizing strain Field experiment

Soil respiration and its partitioning in different components in tropical primary and secondary mountain rain forests in Hainan Island,china

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Journal of Plant Ecology 2017年第5期10卷 791-799页

作者： Lai jiang Suhui Ma Zhang Zhou Tianli Zheng xingxing jiang Qiong Cai Peng Li Jianxiao Zhu Yide Li Jingyun Fang Department of Ecology College of Urban and Environmental Scienceand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking UniversityNo.5 Yiheyuan Road Haidian DistrictBeijing 100871P.R.China Research Institute of Tropical Forestry Chinese Academy of Forestry682Guangshan 1 Rd.Tianhe DistrictGuangzhou 520510P.R.China

Aims Soil respiration is one of the most important components in the car-bon(c)cycle in terrestrial *** investigate the contribution of each component of c cycle to the total soil c efflux,we quantified the rates of litter,root,and other mineral soil respiration from 2012 to 2014 in the primary and secondary tropical mountain rain forests in Hainan Island,*** the seasonal dynamics of soil(Rs),non-litter(RNL)and non-root(RNR)respiration rates were measured using an automatic chamber system(Li-8100).Litter removal and root removal treatments were used to assess the contribution of litter and roots to belowground c *** estimated the annual c efflux of each compo-nent of soil respiration in primary and secondary forests using a temperature-based exponential model and analyzed the impact of each component in each forest *** Findingsthe annual total soil c efflux was significantly higher in the primary rain forest(1567±205 g c m^(−2)yr^(−1))than that in the secondary forest(1300±70 g c m^(−2)yr^(−1),PRs>*** results show that the difference in litter respiration between primary and secondary forest caused the major difference in annual soil respiration efflux between these two forest *** addition,the litter respiration is more sensitive to the soil temperature than the other soil respiration components.

关键词： soil respiration litter root mineral soil temperature sensitivity tropical mountain rain forest

Interface Effect of Ru-MoS_(2) Nanoflowers on Lignin Substrate for Enhanced Hydrogen Evolution Activity

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Energy & Environmental Materials 2021年第1期4卷 117-125页

作者： Yeqing Xu xingxing jiang Gonglei Shao Haiyan Xiang Sisi Si Xing Li Travis Shihao Hu Guo Hong Shengyi Dong Huimin Li Yexin Feng Song Liu Institute of Chemical Biology and Nanomedicine (ICBN) State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan UniversityChangsha Hunan 410082China Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and Electronics Hunan UniversityChangsha Hunan 410082 China Institute of Chemical Biology and Nanomedicine State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical Engineering Hunan UniversityChangsha Hunan 410082 China College of Chemistry and Chemical Engineering Hunan UniversityChangsha Hunan 410082 China Department of Mechanical Engineering California State UniversityLos Angeles CA 90032 USA Institute of Applied Physics and Materials Engineering Department of Physics and Chemistry Faculty of Science and Technology University of MacaoAvenida da UniversidadeTaipa Macao SAR 999078 China School of Physics Peking UniversityBeijing 100871 China

The catalytic performance of Molybdenum disulfide(MoS_(2)) has been still far from that of Pt-based catalysts for inadequate active sites and sluggish electron transfer kinetics. Through engineering the interface between MoS_(2)-based materials and supported substrates, hybrid Ru-doped MoS_(2) on carbonized lignin(CL) is designed and prepared as efficient catalyst for hydrogen evolution reaction(HER). The CL substrate not only facilitates the growth of MoS_(2) nanoflowers, but also promotes the electron transfer. Ru doping increases active sites greatly for HER. The hybrid catalyst achieves a low onset overpotential of 25 mV and a low Tafel slope of 46 m V dec^(-1). The favorable HER activity ascribes to the interfacial interaction between MoS_(2) and CL. Density functional theory calculations further confirm the improved HER performance with doped Ru atoms. This study presents a prototype application to design electrocatalysts with enhanced carrier mobility and high-density active sites based on interface effect.

关键词： carbonized lignin hydrogen evolution reaction interface effect molybdenum disulfide

Preface to Nonlinear Optical Crystals

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Chinese Journal of Structural Chemistry 2023年第3期42卷 1-3页

作者： Sangen Zhao Guohong Zou Min Zhang Hongwei Yu xingxing jiang Min Luo Fujian Institute of Research on the Structure of Matter Chinese Academy of SciencesFuzhouChina Sichuan University ChengduChina Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of SciencesUrumqiChina Tianjin University of Technology TianjinChina Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijingChina

Nonlinear optical(NLO)crystals can efficiently convert the frequency of common solid-state laser with fixed or limited *** the first observation of second-harmonic generation(SHG)phenomenon in the early 1960s,they have played an increasing role in the fields of laser spectra,precision measurements,and quantum information,as well as industrial laser processing,and so ***,it is still challenging to rationally design and synthesize new NLO crystals.

关键词： laser Crystal Nonlinear

Weak signal extraction of micro-motor rotor unbalance based on all-phase fast Fourier transform

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International Journal of Mechanical System Dynamics 2024年第2期4卷 202-212页

作者： Qinghua Liu xingxing Xu Zhenrong Lu Liwei Yu Dong jiang School of Mechanical and Electronic Engineering Nanjing Forestry UniversityNanjingChina Marine Design and Research Institute of China ShanghaiChina

To improve the dynamic balancing accuracy of the micro-motor rotor,an unbalanced vibration feature extraction based on an all-phase fast Fourier transform(APFFT)method is *** amplitude and phase of the signal are extracted by spectrum analysis after windowing the unbalanced *** mathematical model is derived to simulate the weak signal of rotor *** simulation results show that this method is accurate in extracting the weak signal of the rotor under different noise *** micro-motor rotor unbalanced test system is developed for experimental *** accuracy and stability of the vibration amplitude and phase extracted by the APFFT are better than the accuracy and stability from the hardware filtering *** rotor unbalance is reduced by more than 80%.Furthermore,secondary balance of the rotor after the first balance is carried *** proposed method can still extract the residual unbalance of the *** results demonstrated that the proposed method can achieve a reduction rate of 90%and the accuracy is within 5mg,verifying the effectiveness of the proposed method for high-precision rotor dynamic balance.

关键词： all-phase fast Fourier transform feature extraction rotor dynamic balance weak signal

Selection of Negative Charged Acidic Polar Additives to Regulate Electric Double Layer for Stable Zinc Ion Battery

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Nano-Micro Letters 2024年第12期16卷 342-356页

作者： Xing Fan Lina Chen Yongjing Wang Xieyu Xu xingxing Jiao Peng Zhou Yangyang Liu Zhongxiao Song jiang Zhou State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055People’s Republic of China Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031People’s Republic of China Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional MaterialsCentral South UniversityChangsha 410083People’s Republic of China

Zinc-ion batteries are promising for large-scale electrochemical energy storage systems,which still suffer from interfacial issues,e.g.,hydrogen evolution side reaction(HER),self-corrosion,and uncontrollable dendritic Zn *** the regulation of electric double layer(EDL)has been verified for interfacial issues,the principle to select the additive as the regulator is still ***,several typical amino acids with different characteristics were examined to reveal the interfacial behaviors in regulated EDL on the Zn *** charged acidic polarity(NCAP)has been unveiled as the guideline for selecting additive to reconstruct EDL with an inner zincophilic H_(2)O-poor layer and to replace H_(2)O molecules of hydrated Zn^(2+)with NCAP *** the synergistic effects of EDL regulation,the uncontrollable interface is significantly stabilized from the suppressed HER and anti-self-corrosion with uniform ***,by adding NCAP glutamate,a high average Coulombic efficiency of 99.83%of Zn metal is achieved in Zn|Cu asymmetrical cell for over 2000 cycles,and NH4V4O10|Zn full cell exhibits a high-capacity retention of 82.1%after 3000 cycles at 2 A g^(-1).Recapitulating,the NCAP principle posted here can quicken the design of trailblazing electrolyte additives for aqueous Zn-based electrochemical energy storage systems.

关键词： Aqueous Zn-ion batteries Zn metal anode Negative charged acidic polar additives Electric double-layer regulation

Anomalous Thermal Expansion in Borate Optical Crystals

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Anomalous Thermal Expansion in Borate Optical Crystals

Iterative HOEO fusion strategy:a promising tool for enhancing bearing fault feature

中国晶体学会第六届学术年会暨会员代表大会（极端条件晶体材料分会）

作者： Zheshuai Lin xingxing jiang Center for Crystal R&D Key Lab of Functional Crystals and Laser Technology of Chinese Academy of SciencesTechnical Institute of Physics and ChemistryChinese Academy of Sciences

Most materials are three-dimensionally expanded,subjected to the increasing ***,a small number of materials are contracted along some specific directions(or retain size constant)when being heated,namely,exhibit the ne...

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Frontiers of Mechanical Engineering 2023年第1期18卷 253-273页

作者： xingxing jiang Demin PENG Jianfeng GUO Jie LIU Changqing SHEN Zhongkui ZHU School of Rail Transportation Soochow UniversitySuzhou 215131China China Academy of Railway Sciences Co.Ltd. Beijing 100094China School of Civil and Hydraulic Engineering Huazhong University of Science and TechnologyWuhan 430074China

As parameter independent yet simple techniques,the energy operator(EO)and its variants have received considerable attention in the field of bearing fault feature ***,the performances of these improved EO techniques are subjected to the limited number of EOs,and they cannot reflect the non-linearity of the machinery dynamic systems and affect the noise *** a result,the fault-related transients strengthened by these improved EO techniques are still subject to contamination of strong *** address these issues,this paper presents a novel EO fusion strategy for enhancing the bearing fault feature nonlinearly and ***,the proposed strategy is conducted through the following three ***,a multi-dimensional information matrix(MDIM)is constructed by performing the higher order energy operator(HOEO)on the analysis signal *** is regarded as the fusion source of the proposed strategy with the properties of improving the signal-to-interference ratio and suppressing the noise in the low-frequency ***,an enhanced manifold learning algorithm is performed on the normalized MDIM to extract the intrinsic manifolds correlated with the fault-related ***,the intrinsic manifolds are weighted to recover the fault-related *** studies and experimental verifications confirm that the proposed strategy is more effective for enhancing the bearing fault feature than the existing methods,including HOEOs,the weighting HOEO fusion,the fast Kurtogram,and the empirical mode decomposition.

关键词： higher order energy operator fault diagnosis manifold learning rolling element bearing information fusion

Enhanced photoelectrochemical water splitting using a cobalt-sulfide-decorated BiVO_(4) photoanode

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Chinese Journal of Catalysis 2022年第2期43卷 433-441页

作者： Zhiming Zhou Jinjin Chen Qinlong Wang xingxing jiang Yan Shen Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074HubeiChina China‐EU Institute for Clean and Renewable Energy Huazhong University of Science and TechnologyWuhan 430074HubeiChina

Solar-driven water splitting is considered as a promising method to mitigate the energy crisis and various environmental *** vanadate(BiVO_(4))is photoanode material with tremendous potential for photoelectrochemical(PEC)water ***,its PEC performance is severely hindered owing to poor surface charge transfer,surface recombination at the photoanode/electrolyte junction,and sluggish oxygen evolution reaction(OER)*** this regard,a novel solution was developed in this study to address these issues by decorating the surface of BiVO_(4)with cobalt sulfide,whose attractive features such as low cost,high conductivity,and rapid charge-transfer ability assisted in improving the PEC activity of the BiVO_(4)*** fabricated photoanode exhibited a significantly enhanced photocurrent density of 3.2 m A cm^(-2)under illumination at 1.23 V vs.a reversible hydrogen electrode,which is more than 2.5 times greater than that of pristine BiVO_(4).Moreover,the Co S/BiVO_(4)photoanode also exhibited considerable improvements in the charge injection yield(75.8%vs.36.7%for the bare BiVO_(4)film)and charge separation efficiency(79.8%vs.66.8%for the pristine BiVO_(4)film).These dramatic enhancements were primarily ascribed to rapid charge-transport kinetics and efficient reduction of the anodic overpotential for oxygen evolution enabled by the surface modification of BiVO_(4)by Co *** study provides valuable suggestions for designing efficient photocatalysts via surface modification to improve the PEC performance.

关键词： Photoelectrochemical water splitting Bismuth vanadate Cobalt sulfide Charge separation and transfer Photoanode