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Visible-light-driven photocatalysis degradation of antibiotic pollutants by La-doped CeO_(2) nanorods:synergy of La doping and oxygen vacancy

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Rare Metals 2024年第7期43卷 3134-3145页

作者： Shi-Hai Cao Jing-Ru Qu yu-Qi zhao yun-tong Sun Wen-tong Gao Bing Han Yao Lu College of Environmental Engineering Nanjing Institute of TechnologyNanjing 211167China School of Materials Science and Engineering Nanjing Institute of TechnologyNanjing 211167China School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingapore 637459Singapore Institute of Environmental Health and Ecological Security School of Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and TechnologySuzhou215009China

Elemental doping is an effective strategy to enhance photocatalytic activity and extend the light absorption range of single-component *** this work,a series of La-doped CeO_(2) nanorods(La-CeO_(2)-x) with La content of 1 wt%-15 wt% are synthesized by a simple hydrothermal method and further used as photocatalyst for sulfamerazine(SMR) *** prepared La-CeO_(2)-x nanorods exhibit a great improvement in electron-hole pair migration and visible-light response due to the synergistic effect of abundant oxygen vacancies and heterogeneous elements(La).Consequently,La-CeO_(2)-x exhibited excellent visible-light photocatalytic performances and chemical stability for SMR degradation,the La-CeO_(2)-5 sample achieved the highest SMR degradation rate of 81%,which was 3.4 times higher than that of the original CeO_(2).Furthermore,three possible degradation pathways of SMR in La-CeO_(2) photocatalytic reactions were proposed by liquid chromatography-mass spectrometry ***,density functional theory calculations were carried out to provide an in-depth understanding of the structure-performance *** its excellent properties and better photocatalytic performance,this study demonstrates that La doping in CeO_(2) is an effective way to increase oxygen vacancy and improve the photochemical properties of photocatalysts.

关键词： CeO_(2)nanorod La-doped Photocatalysis Oxygen vacancy Sulfamerazine

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A review of CoSb_(3)-based skutterudite thermoelectric materials

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Journal of Advanced Ceramics 2020年第6期9卷 647-673页

作者： Zhi-yuan LIU Jiang-Long ZHU Xin tong Shuo NIU Wen-yu zhao School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan 243002China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The binary skutterudite CoSb_(3) is a narrow bandgap semiconductor thermoelectric(TE)material with a relatively flat band structure and excellent electrical ***,thermal conductivity is very high because of the covalent bond between Co and Sb,resulting in a very low ZT ***,researchers have been trying to reduce its thermal conductivity by the different optimization *** addition,the synergistic optimization of the electrical and thermal transport parameters is also a key to improve the ZT value of CoSb_(3) material because the electrical and thermal transport parameters of TE materials are closely related to each other by the band structure and scattering *** review summarizes the main research progress in recent years to reduce the thermal conductivity of CoSb_(3)-based materials at atomic-molecular scale and nano-mesoscopic *** also provide a simple summary of achievements made in recent studies on the non-equilibrium preparation technologies of CoSb_(3)-based materials and synergistic optimization of the electrical and thermal transport *** addition,the research progress of CoSb_(3)-based TE devices in recent years is also briefly discussed.

关键词： skutterudite CoSb_(3)-based materials lattice thermal conductivity synergistic optimization thermoelectric properties thermoelectric devices

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Effect of different molecular weight organic components on the increase of microbial growth potential of secondary effluent by ozonation

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Journal of Environmental Sciences 2014年第11期26卷 2190-2197页

作者： Xin zhao Hong-Ying Hu tong yu Chang Su Haochi Jiang Shuming Liu Environmental Simulation and Pollution Control State Key Joint Laboratory School of Environment Tsinghua University State Environmental Protection Key Laboratory of Microorganism Application and Risk Control Graduate School at Shenzhen Tsinghua University College of Environment and Resources Inner Mongolia University

Ozonation has been widely applied in advanced wastewater treatment. In this study, the effect of ozonation on assimilable organic carbon （AOC） levels in secondary effluents was investigated, and AOC variation of different molecular weight （MW） organic components was analyzed. Although the removal efflciencies were 47%-76% and 94%-100% for UV2s4 and color at ozone dosage of 10 mg/L, dissolved organic carbon （DOC） in secondary effluents was hardly removed by ozonation. The AOC levels increased by 70%-780% at an ozone dosage range of 1-10 mg/L. AOC increased significantly in the instantaneous ozone demand phase, and the increase in AOC was correlated to the decrease in UV254 during ozonation. The results of MW distribution showed that, ozonation led to the transformation of larger molecules into smaller ones, but the increase in low MW （〈1 kDa） fraction did not contribute much to AOC production. The change of high MW （〉100 kDa and 10-100 kDa） fractions itself during ozonation was the main reason for the increase of AOC levels. Furthermore, the oxidation of organic matters with high MWs （〉 100 kDa and 10-100 kDa） resulted in more AOC production than those with low MWs （1-10 kDa and 〈1 kDa）. The results indicated that removing large molecules in secondary effluents could limit the increase of AOC during ozonation.

关键词： Wastewater reclamation and reuse Ozonation Assimilable organic carbon (AOC)Molecular weight distribution Biological stability

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One pot synthesis of a soluble polymer for zirconium carbide

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Chinese Chemical Letters 2010年第5期21卷 620-623页

作者： Xue yu Tao Wen Feng Qiu Hao Li tong zhao Laboratory of Advanced Polymer Materials Institute of ChemistryChinese Academy of SciencesBeijing 100190China Graduate School of Chinese Academy of Sciences Beijing 100049China

A new polymer,polyzirconoxanesal（PZS）,is synthesized from the reaction of zirconium oxychloride octahydrate （ZrOCl;-8H;O） with acetylacetone（Hacac） and salicyl alcohol（SA） by one-pot *** polymer is soluble in common organic solvents,such as ethanol,methanol,acetone,tetrahydrofuran and chloroform,and exhibits rheology with viscosity of 100- 300 mpa s at 25℃.These properties are suitable for uses in fabrication of ceramic matrix fiber *** of this polymer at 1300℃in argon provides nanosized ZrC with spherical morphology and size of 20-100 nm.

关键词： Zirconium carbide Preceramic polymer Morphology

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Ozonation as an efficient pretreatment method to alleviate reverse osmosis membrane fouling caused by complexes of humic acid and calcium ion

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Frontiers of Environmental Science & Engineering 2019年第4期13卷 89-100页

作者： Xuehao zhao Yinhu Wu Xue Zhang Xin tong tong yu yunhong Wang Nozomu Ikuno Kazuki Ishii Hongying Hu Environmental Simulation and Pollution Control State Key Joint Laboratory State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC)School of EnvironmentTsinghua UniversityBeijing 100084China Collaborative Innovation Center for Advanced Nuclear Energy Technology Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China Kurita Water Industries Ltd. Nakano-kuTokyo 164-0001Japan Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen InstituteShenzhen 518055China

Humic acid has been considered as one of the most significant sources in feed water causing organic fouling of reverse osmosis (RO) membranes, but the relationship between the fouling behavior of humic acid and the change of its molecular structure has not been well developed yet. In this study, the RO membrane fouling behavior of humic acid was studied systematically with ozonation as a pretreatment method to control RO membrane fouling. Furthermore, the effect of ozone on the structure ofhumic acid was also explored to reveal the mechanisms. Humic acid alone (10-90 mg/L, in deionized water) was found not to cause obvious RO membrane fouling in 45-h operation. However, the presence of Ca^2+ aggravated significantly the RO membrane fouling caused by humic acid, with significant flux reduction and denser fouling layer on RO membrane, as it was observed by scanning electron microscope (SEM) and atomic force microscope (AFM). However, after the pretreatment by ozone, the influence of Ca^2+ was almost eliminated. Further analysis revealed that the addition of Ca^2+ increased the particle size of humic acid solution significantly, while ozonation reduced the SUVA254, particle size and molecular weight of the complexes of humic acid and Ca^2+(HA-Ca^2+ complexes). According to these results and literature, the bridge effect of Ca^2+ aggregating humic acid molecules and the cleavage effect of ozone breaking HA-Ca^2+ complexes were summarized. The change of the structure of humic acid under the effect of Ca^2+ and ozone is closely related to the change of its membrane fouling behavior.

关键词： Reverse osmosis Membrane fouling Humic acid Ca^2+ Ozone

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Spatial distribution of aerosol pollution based on MODIS data over Beijing,China

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Journal of Environmental Sciences 2007年第8期19卷 955-960页

作者： LI Ling-jun WANG Ying ZHANG Qiang yu tong zhao yue JIN Jun Beijing Municipal Environmental Monitoring Center Beijing 100044 China. Central University for Nationalities Beijing 100081 China Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China

With the help of regression analysis, the relationships were detected between aerosol＇s contribution to apparent reflectance （ACR） derived from Moderate Resolution Imaging Spectroradiometer （MODIS） on board Terra and hourly PM10 mass concentration measured at 30 ground-based locations in Beijing for the August of 2003 and 2004. It was shown that there was a good correlation between the ACR and PM10 （linear correlation coefficient, R=0.56）. On the basis of this relationship, spatial distribution and possible sources of PM10 derived from MODIS were analyzed and two frequently heavily-polluted regions were found, namely downtown of the city and the district near Xishan Mountain. These two regions coincidently are also urban heat island centers. The foundings of this paper will be greatly useful for environmental monitoring and urban planning for Beijing, especially for the 2008 Olympic game to be held in Beijing.

关键词： MODIS PM10 spatial distribution

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Enhanced autophagic clearance of amyloid-βvia histone deacetylase 6-mediated V-ATPase assembly and lysosomal acidification protects against Alzheimer's disease in vitro and in vivo

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Neural Regeneration Research 2025年第9期20卷 2633-2644页

作者： Zhimin Long Chuanhua Ge yueyang zhao yuanjie Liu Qinghua Zeng Qing Tang Zhifang Dong Guiqiong He Institute of Neuroscience School of Basic Medical SciencesChongqing Medical UniversityChongqingChina Department of Anatomy Chongqing Medical UniversityChongqingChina Department of Physiology Chongqing Medical UniversityChongqingChina Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityChongqingChina Ministry of Education Key Laboratory of Child Development and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina National Clinical Research Center for Child Health and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina

Recent studies have suggested that abnormal acidification of lysosomes induces autophagic accumulation of amyloid-βin neurons,which is a key step in senile plaque ***,resto ring normal lysosomal function and rebalancing lysosomal acidification in neurons in the brain may be a new treatment strategy for Alzheimer's *** acetylation/deacetylation plays a central role in lysosomal ***,we show that inhibiting the classic microtubule deacetylase histone deacetylase 6 with an histone deacetylase 6 shRNA or thehistone deacetylase 6 inhibitor valproic acid promoted lysosomal reacidification by modulating V-ATPase assembly in Alzheimer's *** rthermore,we found that treatment with valproic acid markedly enhanced *** clearance of amyloid-βaggregates,and ameliorated cognitive deficits in a mouse model of Alzheimer's *** findings demonstrate a previously unknown neuroprotective mechanism in Alzheimer's disease,in which histone deacetylase 6 inhibition by valproic acid increases V-ATPase assembly and lysosomal acidification.

关键词： Alzheimer's disease amyloid-β APP/PS1 mice autophagy cognitive impairment histone deacetylase 6 lysosomal acidification microtubule acetylation valproic acid V-ATPase

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Biotoxicity dynamic change and key toxic organics identification of coal chemical wastewater along a novel full-scale treatment process

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Journal of Environmental Sciences 2024年第4期138卷 277-287页

作者： Weiwei Ma Xiaoqi Zhang Hongjun Han Xueqing Shi Qiaoping Kong tong yu Fei zhao School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266520China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China

It is particularly important to comprehensively assess the biotoxicity variation of industrial wastewater along the treatment process for ensuring the water environment ***,intensive studies on the biotoxicity reduction of industrial wastewater are still *** this study,the toxic organics removal and biotoxicity reduction of coal chemical wastewater(CCW)along a novel full-scale treatment process based on the pretreatment process-anaerobic process-biological enhanced(BE)process-anoxic/oxic(A/O)process-advanced treatment process was *** process performed great removal efficiency of COD,total phenol,NH_(4)^(+)-N and total *** the biotoxicity variation along the treatment units was analyzed from the perspective of acute biotoxicity,genotixicity and oxidative *** results indicated that the effluent of pretreatment process presented relatively high acute biotoxicity to Tetrahymena *** the acute biotoxicity was significantly reduced in BE-A/O *** the genotoxicity and oxidative damage to Tetrahymena thermophila were significantly decreased after advanced *** polar organics in CCW were identified as the main biotoxicity *** were positively correlated with acute biotoxicity,while the nitrogenous heterocyclic compounds and polycyclic aromatic hydrocarbons were positively correlated with *** the biotoxicity was effectively reduced in the novel full-scale treatment process,the effluent still performed potential biotoxicity,which need to be further explored in order to reduce environmental risk.

关键词： Acute biotoxicity Genotoxicity Oxidative damage Toxic organics Coal chemical wastewater Novel full-scale treatment process

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Co-doping effects on magnetism and superconductivity in the 112-type EuFeAs2 system

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Science China(Physics,Mechanics & Astronomy) 2021年第6期64卷 98-105页

作者： Jia yu tong Liu BinBin Ruan Kang zhao QingSong Yang MengHu Zhou ZhiAn Ren Institute of Physics and Bejing National Laboratory for Condensed Matter Physics Chinese Academy of SciencesBejing 100190China School of Physical Sciences University of Chinese Academy of SciencesBejing 100049China Songshan Lake Materials Laboratory Dongguan 523808China School of Physics Sun Yat-sen UniversityGuangzhou 510275China

The discovery of EuFeAs_(2),currently the only charge-neutral parent phase of the 112-type iron-pnictide system,provides a new platform for the study of elemental doping effects on magnetism and superconductivity(SC).In this study,a series of polycrystalline EuFe_(1-y)Co_(y)As_(2)and Eu_(0.9)Pr_(0.1)Fe_(1-y)Co_(y)As_(2)samples are synthesized through solid-state reaction,and the evolutions of SC and magnetism with Co doping in EuFeAs_(2)and Eu_(0.9)Pr_(0.1)FeAs_(2)are investigated by electrical transport and magnetic susceptibility *** EuFe_(1-y)Co_(y)As_(2),the Eu-related antiferromagnetic(AFM)transition around 40 K is barely affected by Co doping,while the Fe-related spin density wave(SDW)transition temperature drops ***,SC is induced by a trace amount of Co doping,with a highest transition temperature T_(c)~28 K found in EuFe0.9Co0.1As_(2).For the Eu_(0.9)Pr_(0.1)Fe1-yCo_(y)As_(2)series,the magnetism and superconductivity show similar evolutions upon Co doping,and the highest T_(c)is enhanced to 30.6 K with an optimum doping level y~*** results shed light on the competition between SC and SDW with Co doping in the 112-type EuFeAs_(2)system.

关键词： EuFeAs_(2) iron-based superconductors superconductivity magnetism

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Biocompatible Multifunctional E-Skins with Excellent Self-Healing Ability Enabled by Clean and Scalable Fabrication

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Nano-Micro Letters 2021年第12期13卷 221-234页

作者： Xiuzhu Lin Fan Li yu Bing Teng Fei Sen Liu Hongran zhao tong Zhang State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China

Electronic skins(e-skins) with an excellent sensing performance have been widely developed over the last few ***,wearability,biocompatibility,environmental friendliness and scalability have become new limitations. Self-healing ability can improve the long-term robustness and reliability of e-skins. However,self-healing ability and integration are hardly balanced in classical structures of self-healable devices. Here,cellulose nanofiber/poly(vinyl alcohol)(CNF/PVA),a biocompatible moisture-inspired self-healable composite,was applied both as the binder in functional layers and the substrate. Various functional layers comprising particular carbon materials and CNF/PVA were patterned on the substrate. A planar structure was beneficial for integration,and the active self-healing ability of the functional layers endowed self-healed e-skins with a higher toughness. Water served as both the only solvent throughout the fabrication process and the trigger of the self-healing process,which avoids the pollution and bioincompatibility caused by the application of noxious additives. Our e-skins could achieve real-time monitoring of whole-body physiological signals and environmental temperature and humidity. Cross-interference between di erent external stimuli was suppressed through reasonable material selection and structural design. Combined with conventional electronics,data could be transmitted to a nearby smartphone for post-processing. This work provides a previously unexplored strategy for multifunctional e-skins with an excellent practicality.

关键词： Self-healing electronics Strain sensors Environmental friendly method Multifunctional e-skins Scalability

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