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A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energy Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： Hydrogen evolution reaction

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Amino acid assisted aqueous synthesis of highly stable CsPbBr_(3)nanocrystals for cell imaging

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Nano Research 2025年第1期18卷 675-683页

作者： Xue Li Yanan Guo Guoying Tan Qingyi Liu Nan Song Yu Tang State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Lead halide perovskite nanocrystals(NCs)exhibit excellent optoelectronic performance and have drawn great interests in the fields of biological imaging and ***,the poor stability of CsPbX_(3)(X=Cl,Br,I)in water is still a challenge to hinder their practical *** this work,a facile strategy has been developed for aqueous synthesis of CsPbX_(3) nanocrystals,in which L-glutamic acid(LGlu)has been used to replace oleic acid in the synthetic *** from the synergic effects of L-Glu and oleylamine(OAm),CsPbBr_(3)nanocrystals(L-Glu/OAm-CsPbBr_(3)NCs)with high water stability have been directly prepared under a mild condition at room temperature in water,facilitated by the process of crystal phase transformation from Cs_(4)PbBr_(6) to CsPbBr_(3).L-Glu/OAm-CsPbBr_(3)NCs exhibit a high quantum yield of 85%and a narrow full width at half maximum of 16 nm,demonstrating their efficient luminescence in ***,L-Glu on the surface have contributed greatly to an acidic environment and passivation of surface defects,improving the water stability and dispersibility of CsPbBr_(3)***,L-Glu/OAm-CsPbBr_(3)NCs exhibit great biocompatibility due to the presence of L-Glu,resulting in their good performance for HeLa cell ***,we propose a facile and effective method to prepare CsPbBr_(3)nanocrystals with excellent water stability by using L-Glu and OAm as cooperated ligands and expand their application in cell imaging.

关键词： aqueous synthesis cell imaging lead halide perovskite nanocrystals L-glutamic acid phase transformation

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Fine grains with high-density annealing twins and precipitates inducing favorable strength and excellent plasticity in laser powder b e d fusion-fabricate d Inconel 718 via deep cryogenic and heat treatments

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Journal of Materials science & technology 2024年第20期187卷 28-48页

作者： Bo Liu Jiayu Xu Yubi Gao Yong Hu Xiaokang Yang Yutian Ding Dong Zhang Sujun Lu State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Material science and Engineering Lanzhou University of TechnologyLanzhou 730050China School of Electromechanics and Automobile Engineering Tianshui Normal UniversityTianshui 741001China Jinchuan Nickel Cobalt Research and Design Institute Jinchuan Group Co.LtdJinchang 737100China

Tailoring high-density annealing twins in laser powder bed fusion(LPBF)-fabricated alloys based on their intrinsic residual stress requires high annealing temperatures and/or long-term annealing,result-ing in the abnormal growth of large recrystallized grains,which is detrimental to mechanical *** work proposes a new strategy for achieving a favorable strength-plasticity synergy of the LPBF-fabricated Inconel 718 superalloy by performing a deep cryogenic treatment(DCT)with the subsequent heat treatment(including annealing and double aging)to tailor fine grains with“high-density annealing twins+precipitates”architectures and compares the obtained material with an alloy subjected to a direct heat treatment without a prior *** obtained results reveal that the additional internal stress gen-erated during DCT increases the stored energy and dislocation density,which provide a sufficient driving force for activating high-density annealing twin boundaries(63.2%)with fine grains(31.6μm)within a short annealing *** more homogeneous tailored microstructure with the“finer grains+high-density twins+precipitates”architectures decreases the mean free path of slipping dislocations,pro-moting intensive interactions with dislocations and inducing a strong strain hardening *** mul-tiple deformation modes of stacking faults coupled with Lomer-Cottrell locks,thin primary deformation twins,and secondary twins activated during tensile loading,sustaining a strong work hardening ability and delaying the plastic instability,which exhibits a high strength(yield strength of 1088 MPa and tensile strength of 1369 MPa)and excellent plasticity(elongation of 30%).This work not only describes a fea-sible method for simultaneously enhancing the strength and plasticity in additively manufactured(AM)alloys but also provides new insights into increasing the fraction of twins at a small grain size to improve the grain boundary-related properties without destroying the AM allo

关键词： Laser powder bed fusion Deep cryogenic treatment Stored energy High-density annealing twins Work hardening

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Anaerobic biodegradation of trimethoprim with sulfate as an electron acceptor

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Frontiers of Environmental science & Engineering 2019年第6期13卷 59-68页

作者： Bin Liang Deyong Kong Mengyuan Qi Hui Yun Zhiling Li Ke Shi E Chen Alisa SVangnai Aijie Wang Shenyang Academy of Environmental sciences Shenyang 110167China Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life ScienceLanzhou UniversityLanzhou 730000China The Environmental Monitoring Center of gansu province Lanzhou 730020China Department of Biochemistry Faculty of ScienceChulalongkorn UniversityBangkok 10330Thailand Center of Excellence on Hazardous Substance Management(HSM) Chulalongkorn UniversityBangkok 10330Thailand

Trimethoprim(TMP)is an antibiotic frequently detected in various *** are the main drivers of emerging antibiotic contaminant degradation in the ***,the feasibility and stability of the anaerobic biodegradation of TMP with sulfate as an electron acceptor remain poorly ***,TMP-degrading microbial consortia were successfully enriched from municipal activated sludge(AS)and river sediment(RS)as the initial *** acclimated consortia were capable of transforming TMP through demethylation,and the hydroxyl-substituted demethylated product(4-desmethyl-TMP)was further *** biodegradation ofTMP followed a 3-parameter sigmoid kinetic *** potential degraders(Acetobacterium,Desulfovibrio,Desulfbbulbus,and unidentified Peptococcaceae)and fermenters(Lentimicrobium and Petrimonas)were significantly enriched in the acclimated *** AS-and RS-acclimated TMP-degrading consortia had similar core *** anaerobic biodegradation ofTMP could be coupled with sulfate respiration,which gives new insights into the antibiotic fate in real environments and provides a new route for the bioremediation of antibiotic-contaminated environments.

关键词： Trimethoprim(TMP)biodegradation Demethylation Sulfate reduction Core microbiome Antibiotic fate

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Relationship between genotypes and clinical manifestation, pathology, and cccDNA in Chinese children with hepatitis B virus-associated glomerulonephritis

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World Journal of Pediatrics 2016年第3期12卷 347-352页

作者： Yong-Hong Sun Xiao-Yan Lei Yi-Pa Sai Jun-Hui Chen Yuan-Chun Sun Xia Gao Department of Pediatrics People's Hospital of Gansu ProvinceLanzhouGansuChina

Background:Hepatitis B virus-associated glomerulonephritis(HBV-GN)is one of the extrahepatic manifestations after HBV infection,which would cause great clinical harm to *** present study was undertaken to investigate the HBV-GN genotypes and its clinical relevance in Chinese ***:A total of 41 HBV-infected children diagnosed with HBV-GN were enrolled in the *** patients underwent liver and kidney *** genotypes and cccDNA were detected in their serum samples to analyze the relationship between HBV genotypes and clinical characteristics,cccDNA,and ***:Among the 41 children with HBV-GN,29(70.7%)had genotype C,10(24.4%)had genotype B,2(4.9%)had genotype B/C,and none of them had genotype non-B/*** children had genotypes B or C;moreover,the genotype C was the most frequent *** incidence of hematuria and albuminuria,reduction in complement C3,increase in serum alanine aminotransferase levels and renal insufficiency in the children with genotype C were signifi cantly higher than those in the children with genotype B(P0.05).The frequency of HBV cccDNA positive in the genotype C group was significantly higher than that in the genotype B group(72.4%vs.30.0%,P0.05).Conclusion:Genotype C was the most frequent genotype in the described group of patients with HBV-GN,and the liver and kidney damage indicators were more likely to occur in patients with genotype C.

关键词： cccDNA genotypes glomerulonephritis hepatitis B virus pathology

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Water in the Mogao Grottoes,China:where it comes from and how it is driven

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Journal of Arid Land 2015年第1期7卷 37-45页

作者： HongShou LI WanFu WANG HongTao ZHAN Fei QIU QingLin GUO GuoBin ZHANG The Conservation Institute of Dunhuang Academy State Administration for Cultural Heritage Key Scientific Research Base of Conservation for Ancient Murals Dunhuang Academy State Administration for Cultural Heritage

The Dunhuang Mogao Grottoes in China was designated as a world heritage site by UNESCO in 1987 and is famous for its cultural relics. Water is the most active factor that harms the relics in the caves as it damages the grotto murals and painted sculptures. Thus, determining the water sources and driving forces of water movement is a key issue for protecting these cultural relics. These issues have troubled relics protectors for a long time. In this study, the authors chose a representative cave in the Mogao Grottoes and, by completely sealing the cave to make a closed system, measured the water vapor from the surrounding rock. This was accomplished by installing a condensation-dehumidification temperature-humidity control system for the collection of water vapor. The results show that there is continuous evaporation from the deep surrounding rock into the cave. The daily evaporation capacity is determined to be 1.02 g/（d·m2）. The water sources and driving forces of water movement were further analyzed according to the character of the water evaporation and by monitoring the temperature and humidity of the surrounding rock. It was found that the water vapor in the cave derives from phreatic water. Moreover, the yearly fluctuation of temperature in the surrounding rock and geothermal forces are the basic powers responsible for driving phreatic evaporation. Under the action of the yearly temperature fluctuations, decomposition and combination of bound water acts as a ＂pump＂ that drives phreatic water migration and evaporation. When the temperature rises, bound water decomposes and evaporates; and when it falls, the rock absorbs moisture. This causes the phreatic water to move from deep regions to shallow ones. Determining the source and dynamic foundation of the water provides a firm scientific basis for protecting the valuable cultural relics in the caves.

关键词： the Silk Road cultural heritage surrounding rock bound and phreatic water thermodynamics

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WSN Mobile Target Tracking Based on Improved Snake-Extended Kalman Filtering Algorithm

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Journal of Beijing Institute of technology 2024年第1期33卷 28-40页

作者： Duo Peng Kun Xie Mingshuo Liu School of Computer and Communication of Lanzhou University of technology Lanzhou Gansu 730050China

A wireless sensor network mobile target tracking algorithm(ISO-EKF)based on improved snake optimization algorithm(ISO)is proposed to address the difficulty of estimating initial values when using extended Kalman filtering to solve the state of nonlinear mobile target ***,the steps of extended Kalman filtering(EKF)are ***,the ISO is used to adjust the parameters of the EKF in real time to adapt to the current motion state of the mobile ***,the effectiveness of the algorithm is demonstrated through filtering and tracking using the constant velocity circular motion model(CM).Under the specified conditions,the position and velocity mean square error curves are compared among the snake optimizer(SO)-EKF algorithm,EKF algorithm,and the proposed *** comparison shows that the proposed algorithm reduces the root mean square error of position by 52%and 41%compared to the SOEKF algorithm and EKF algorithm,respectively.

关键词： wireless sensor network(WSN)target tracking snake optimization algorithm extended Kalman filter maneuvering target

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Nickel-catalyzed kinetic resolution to achieve P-chiral phosphine oxides and sec-phosphine oxides

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science China Chemistry 2023年第9期66卷 2569-2575页

作者： Xi Zhang Shao-Qiu Wang Shang-Dong Yang State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China School of Pharmaceutical science Hangzhou Medical CollegeHangzhou 310012China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

P-Chiral phosphines and sec-phosphine oxides(SPO) are found in a diverse range of compounds that play crucial roles in various fields, including asymmetric catalysis, materials, agrochemistry, and pharmaceutical chemistry. Herein, we describe an enantioselective Ni-catalyzed kinetic resolution of racemic sec-phosphine oxides to obtain the corresponding optically pure Pchiral phosphine oxides and sec-phosphine oxides, respectively. These products are versatile chiral phosphine building blocks that can be used to construct an extensive range of P-chiral phosphines.

关键词： P-chiral phosphine oxide kinetic resolution Ni catalysis

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Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure

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Journal of Energy Chemistry 2022年第9期31卷 405-415,I0012页

作者： Hong Dong Feifei Zong Jie Wang Hao Ding Peng Wang Ru Song Ningshuang Zhang Xuchun Cui Shiyou Li School of Petrochemical technology Lanzhou University of TechnologyLanzhou 730050GansuChina Key Laboratory of Low Carbon Energy and Chemical Engineering of gansu province Lanzhou 730050GansuChina gansu Engineerin Laboratory of Cathode Material for Lithium-ion Battery Baiyin 730900GansuChina

Silicon anodes are considered to be the most promising alternatives owing to their theoretical specific capacity,which is almost 10 times higher than that of graphite ***,huge volume changes during charging and discharging affect their interface stability,which strongly limits their application in commercial ***,a popcorn-structured silicon-carbon composite(SiNPs@graphene@C),composed of silicon nanoparticles(SiNPs),graphene spheres and pitch-based carbon,is prepared by spraydrying followed by a wet *** resulting SiNPs@graphene@C composite has good flexibility and elastic-strain capacity due to the graphene substrate,and it possesses macrostructural integrity and mechanical stability during cycling due to the rigid carbon–carbon chemical *** a result,it shows a discharge-specific capacity of 481.3 mAh g^(-1)and a capacity retention of 82.9%after 500 cycles at 1 A g^(-1).Besides,the initial coulomb efficiency is increased from 65.7%to 86.5%by pre-lithiation,which improves the feasibility of commercialising the SiNPs@graphene@C composite.

关键词： SiNPs@graphene@C Popcorn structure Pre-lithiation

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Wireless remote spatiotemporal monitoring of high-fill foundation deformation

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Journal of Mountain science 2023年第6期20卷 1620-1638页

作者： YANG Xiao-hui LI Zhi-qian ZHU Yan-peng GUO Nan School of Civil Engineering Lanzhou University of TechnologyLanzhou 730050China Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education Lanzhou University of TechnologyLanzhou 730050China

The spatial and temporal deformation patterns and deformation control indicators of highfill foundations directly affect the design,construction and operational safety of high-fill *** situ monitoring can comprehensively reflect the deformation of high-fill during and after *** this paper,we have first designed and installed an integrated wireless remote monitoring system for high-fill to achieve real-time dynamic monitoring of settlement,pore water pressure and soil pressure of the fill *** on the monitoring results of nearly one year of the construction period and two years after construction,it was found that the deformation amount and deformation rate of the high-fill foundation showed a non-linear growth relationship with the filling rate and filling *** settlement deformation of the high-fill foundation during the loading period was mainly dominated by the original foundation soil,accounting for 54.4%of the total settlement on average;the settlement deformation during the post-construction period was mainly dominated by the filling body,accounting for 77.04%of the total settlement on average,and the settlement deformation during the post-construction period mainly occurred in the first year after *** analysis of the deformation mechanism suggests that the deformation of the filling body is dominated by exhaust consolidation during the loading period and drainage consolidation during the post-construction period;the deformation of the original foundation soil is dominated by drainage consolidation during the loading period and drainage consolidation develops slowly during the post-construction *** is recommended that the original foundation should be reinforced before the large area filling construction,and that the filling rate should be strictly controlled during *** research results can provide a scientific basis for deformation calculation and stability assessment of high-fill foundatio

关键词： High-fill engineering Wireless remote monitoring Foundation deformation Spatiotemporal law Settlement after construction

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