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SSRN 2024年

作者： Wang, Rong Peng, Yue Chen, Deli Gao, Chuan Wang, Houlin Chen, Zhen Li, Junhua State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China

Manufacturing E-fuels through carbon capture utilization and storage (CCUS), powered by renewable energy conversion, presents a promising pathway towards near-zero emissions for achieving carbon neutrality. However, challenges arise from lower CO selectivity and slower generation rates, leading to suboptimal E-fuels yield and hindering the effective utilization of renewable energy. Drawing inspiration from the hard-soft-based theory, we propose that enhancing the electron delocalization state of catalytic sites can accelerate the CO2 electroreduction to CO. In line with this hypothesis, we have developed a bimetallic catalyst (Ag-Zn) where Ag nanoclusters loaded on ZnO exhibit highly delocalized electrons. Theoretical calculations indicate that Ag-ZnO significantly expedites the hydroxyl detachment of the adsorbed *COOH intermediate, enhancing the efficiency of CO formation. The Ag-ZnO catalyst demonstrates one of the highest CO2-electroreduction-to-CO selectivity (97%) in aqueous electrolyte. Furthermore, our investigation delves into the significance of soft acid sites through in situ X-ray adsorption spectroscopy, in situ Raman spectroscopy and asymmetric low-frequency pulsed strategy. The findings from this study offer theoretical insights guiding the design of catalysts for the efficient electrochemical reduction of CO2 to produce CO. © 2024, The Authors. All rights reserved.

关键词： Electrolytic reduction

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Growth of BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) Solid Solution Photocatalyst for Visible Light-Driven Z-Scheme Overall Water Splitting

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Energy Material Advances 2022年第1期2022卷 16-23页

作者： Ying Luo Qiaoqi Guo Jun Xu Hanghang Zhou Zheng Wang Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

BaTaO_(2)N with intense visible light absorption has been demonstrated as a promising photocatalyst for Z-scheme overall water splitting,whereas the photocatalytic activity of BaTaO_(2)N is still restricted by strong charge recombination at structural ***,we present the direct growth of BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) solid solution from a lattice-matched BaNa_(0.25)Ta_(0.75)O_(3) precursor through volatilization of Na species during a nitridation *** method promotes the direct phase transformation from BaNa_(0.25)Ta_(0.75)O_(3) to BaTaO_(2)N to inhibit the formation of defect *** a result,the as-obtained BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) solid solution shows greatly enhanced activity compared to the conventional BaTaO_(2)N,regardless of photocatalytic H2 evolution in the presence of methanol or Z-scheme overall water *** study provides a facile method to construct(oxy)nitride-based solid solution photocatalysts with low defect density for efficient solar hydrogen production from water splitting.

关键词： process catalyst defect

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Isolated FeN_(3)sites anchored hierarchical porous carbon nanoboxes for hydrazine-assisted rechargeable Zn-CO_(2)batteries with ultralow charge voltage

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Carbon Energy 2025年第1期7卷 121-132页

作者： Sanshuang Gao Hongyi Li Zhansheng Lu Songjie Meng Xue Zhao Xinzhong Wang Xijun Liu Guangzhi Hu Shenzhen Institute of Information Technology Shenzhen 518172China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China School of Ecology and Environmental Science Institute for Ecological Research and Pollution Control of Plateau LakesYunnan UniversityKunming650504China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqiChina School of Physics Henan Normal UniversityXinxiangChina Faculty of Chemistry and Chemical Engineering Yunnan Normal UniversityKunmingChina

Zn-CO_(2)batteries(ZCBs)are promising for CO_(2)conversion and electric energy ***,the ZCBs couple the electrochemical CO_(2)reduction(ECO_(2)R)with the oxygen evolution reaction and competitive hydrogen evolution reaction,which normally causes ultrahigh charge voltage and CO_(2)conversion efficiency attenuation,thereby resulting in~90%total power ***,isolated FeN_(3)sites encapsulated in hierarchical porous carbon nanoboxes(Fe-HPCN,derived from the thermal activation process of ferrocene and polydopamine-coated cubic ZIF-8)were proposed for hydrazine-assisted rechargeable ZCBs based on ECO_(2)R(discharging process:CO_(2)+2H+→CO+H_(2)O)and hydrazine oxidation reaction(HzOR,charging process:N_(2)H_(4)+4OH−→N_(2)+4H_(2)O+4e^(−)).The isolated FeN_(3)endows the HzOR with a lower overpotential and boosts the ECO_(2)R with a 96%CO Faraday efficiency(FECO).Benefitting from the bifunctional ECO_(2)R and HzOR catalytic activities,the homemade hydrazine-assisted rechargeable ZCBs assembled with the Fe-HPCN air cathode exhibited an ultralow charge voltage(decreasing by~1.84 V),excellent CO selectivity(FECO close to 100%),and high 89%energy *** situ infrared spectroscopy confirmed that Fe-HPCN can generate rate-determining*N_(2)and*CO intermediates during HzOR and ECO_(2)*** paper proposes FeN_(3)centers for bifunctional ECO_(2)R/HzOR performance and further presents the pioneering achievements of ECO_(2)R and HzOR for hydrazine-assisted rechargeable ZCBs.

关键词： electrochemical CO_(2)reduction Fe single atoms hierarchical porous carbon nanoboxes hydrazine-assisted Zn-CO_(2)batteries hydrazine oxidation reaction

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

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Frontiers of environmental Science & Engineering 2021年第4期15卷 215-228页

作者： Sanjena Narayanasamydamodaran Jian’e Zuo Haiteng Ren Nawnit Kumar State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Key Laboratory of Hydroscience and Hydraulic Engineering Tsinghua UniversityBeijing100084China

This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio *** studies were conducted in abiotic and biotic reactors containing fresh and aged SIF under different dissolved oxygen concentrations with NO_(3)^(-)−N and/or PO_(4)^(3−)influent(s)and their nitrate/phosphate removal and by-product formations were *** reactors were seeded with a homogenized mixed microbial inoculum procured from natural sludges which were enriched over 6 months under denitrifying conditions in the presence of *** indicated that when influent containing 40 mg/L of NO_(3)^(-)−N was treated with 5 g SIF,79.9%nitrate reduction was observed in 8 days abiotically and 100%removal was accomplished in 20 days when the reactor was *** abiotic and seeded reactors removed more than 92%PO_(4)^(3−)under high DO conditions in 12 *** and biochemical removal of NO_(3)^(-)−N and abiotic removal of PO_(4)^(3−)were higher under independent NO_(3)^(-)−N/PO_(4)^(3−)loading,while 99%PO_(4)^(3−)was removed biochemically under combined NO_(3)^(-)−N and PO_(4)^(3−)*** study furthers the understandings of nitrate and phosphate removal in Zero Valent Iron(ZVI)assisted mixed microbial systems to encourage the application of SIF-supported bio-chemical processes in the simultaneous removals of these pollutants.

关键词： Scrap iron filing Nitrate removal Phosphate removal Mixed culture denitrification Zero valent iron

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Solvent-free mechanochemical mild oxidation method to enhance adsorption properties of chitosan

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Frontiers of environmental Science & Engineering 2021年第6期15卷 353-366页

作者： Mohammadtaghi Vakili Wen Qiu Giovanni Cagnetta Jun Huang Gang Yu Green Intelligence Environmental School Yangtze Normal UniversityChongqing 408100China State Key Joint Laboratory of Environment Simulation and Pollution Control(SKJLESPC) Beijing Key Laboratory for Emerging Organic Contaminants Control(BKLEOC)School of EnvironmentTsinghua UniversityBeijing 100084China

Oxidation has been profitably utilized to improve some properties of ***,only solventbased oxidation procedures have been proposed so far,which are hardly feasible at industrial scale in an economic way because of product recovery *** this study,a solvent-free,rapid,and effective oxidation method is *** is based on direct solid-state reaction between chitosan and oxidant powder in a mechanochemical *** prove that by short high energy ball milling(<3 h)it is possible to achieve diverse physicochemical modifications employing different *** from polysaccharidic chain shortening,persulfate provokes high amorphization and induces formation of ketonic groups;percarbonate heightens deacetylation degree,preserving in part crystallinity;calcium peroxide merely deprotonates amino groups and increases amorphization *** tests with the azo-dye reactive red 2 show that adsorption capacity of chitosan co-milled with persulfate(974 mg/g milled product),which is the best performing adsorbent,is twice that of pristine chitosan,while adsorption rate is outstandingly boosted(125 times).

关键词： Chitosan High energy ball milling Mechanochemistry Oxidation

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Enriching the surface oxygen as efficient anchoring site of highly dispersed Ru for enhanced hydrogenolysis activity

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Nano Research 2023年第10期16卷 12331-12337页

作者： Hongfei Xiao Jianghao Zhang Chuo Du Yanxia Zheng Shuchao Ge Jinhou Fang Shuang Li Changbin Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China School of Chemical Engineering Northwest UniversityXi’an 710069China Weifang Research Institute of Materials and Technology for Eco-environmental Protection Weifang 261300China

While supported-noble-metal catalysts have been widely investigated in hydrotreating reactions,a crucial issue that the catalytic system is still confronted with is developing an efficient approach to gain the high dispersion of noble metals under reducing *** this work,Ru was supported on two MnOx with different specific surface areas(SSAs),and a much higher dispersion of Ru(83%,in contrast to 42%of the other one)was surprisingly observed over MnO with much lower SSA(around one-third of the other one).A suite of complementary characterizations demonstrates that,compared with the catalyst with high SSA(Ru/MnO-H),the MnO in the one with lower SSA(Ru/MnO-L)contains enriched surface oxygen that creates more abundant sites and bears stronger strength to anchor Ru species,mitigating the aggregation of Ru under reducing *** not only enriched active sites(i.e.,exposed Ru),but also created a more electron-deficient Ru domain and thus enhanced the redox property of the surface,leading to the lower barrier for C–O bond *** the hydrogenolysis of diphenyl ether,Ru/MnO-L exhibited significantly enhanced activity(i.e.,6 folds of Ru/MnO-H)and high *** work provides an approach to regulate the surface chemistry of support for the high dispersion of supported metal.

关键词： anchoring strength oxygen-rich support hydrogenolysis C–O bond cleavage Ru-based catalyst

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Geobacter sulfurreducens promoted the biosynthesis of reduced graphene oxide and coupled it for nitrobenzene reduction

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Journal of environmental Sciences 2024年第4期138卷 458-469页

作者： Shoujuan Zhang Qi Liu Linrui Zhong Jianhong Jiang Xiaozhe Luo Xingxin Hu Qian Liu Yue Lu College of Environmental Science and Engineering Hunan UniversityChangsha 410082China Shenzhen Research Institute Hunan UniversityShenzhen 510082China Key Laboratory of Environment Biology and Pollution Control Hunan UniversityMinistry of EducationChangsha 410082China China Machinery International Engineering Design&Research Institute Co. LtdChangsha 410007China Hunan Engineering Research Center for Water Treatment Process&Equipment Changsha 410007China

In order to explore an efficient and green method to deal with nitrobenzene(NB)pollutant,reduced graphene oxide(r GO)as an electron shuttle was applied to enhance the extracellular electron transfer(EET)process of Geobacter sulfurreducens,which was a typical electrochemically active bacteria(EAB).In this study,r GO biosynthesis was achieved via the reduction of graphene oxide(GO)by *** PCA within 3 ***,the r GOPCA combining system completely reduced 50-200μmol/L of NB to aniline as end product within one *** characterization revealed that PCA cells were partly wrapped by rGO,and therefore the distance of electron transfer between strain PCA and r GO material was ***,the ID/IGof GO,r GO,and r GO-PCA combining system were 0.990,1.293 and 1.31,***,highest currents were observed in r GO-PCA-NB as 12.950μA/-12.560μA at -408 m V/156 m V,attributing to the faster electron transfer efficiency in EET ***,the NB reduction was mainly due to:(I)direct EET process from *** PCA to NB;(II)r GO served as electron shuttle and accelerated electron transfer to NB,which was the main degradation ***,the biosynthesis of r GO via GO reduction by Geobacter promoted the NB removal process,which provided a facile strategy to alleviate the problematic nitroaromatic pollution in the environment.

关键词： Reduced graphene oxide Geobacter Nitrobenzene Removal Extracellular electron transfer

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Tourmaline guiding the electric field and dechlorination pathway of 2,3-dichlorophenol by Desulfitobacterium hafniense

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Journal of environmental Sciences 2024年第1期135卷 262-273页

作者： Yue Lu Fangyi Liang Fanzhi Qin Linrui Zhong Jianhong Jiang Qi Liu Shoujuan Zhang Ming Yan Changzheng Fan Haoran Dong College of Environmental Science and Engineering Hunan UniversityChangsha 410082China Shenzhen Research Institute Hunan UniverisyShenzhen 510082China Key Laboratory of Environment Biology and Pollution Control Hunan UniversityMinistry of EducationChangsha 410082China China Machinery International Engineering Design&Research Institute Co. Ltd.Changsha 410007China Hunan Engineering Research Center for Water Treatment Process&Equipment Changsha 410007China

The dehalogenation of organohalides has been a research hotspot in bioremediation field;however,the influence of tourmaline,a natural ore that can generate spontaneous electric field,on organohalide-respiring bacteria(OHRB)and their dechlorination process is not well *** this study,the effect and mechanism of tourmaline on the reductive dechlorination of 2,3-dichlorophenol(2,3-DCP)by Desulfitobacterium hafniense DCB-2Twere *** characterization results confirmed that tourmaline had good stability and the optimal dosage of tourmaline was 2.5 g/L,which shortened the total time required for dechlorination reaction to 72 ***,tourmaline amendment also increased the proportion of 2-chlorophenol(2-CP)from 18%to 30%of end products,while that of 3-CP decreased *** theoretical calculations showed that the bond charge of the orthosubstituted chlorine declined from-0.179 to-0.067,and that of meta-substituted chlorine increased from-0.111 to-0.129,which indicated that the spontaneous electric field of tourmaline affected the charge distribution of 2,3-DCP and was more conducive to the generation of ***,tourmaline with the spontaneous electric field affected the reductive dechlorination pathway of Desulfitobacterium,and the tourmaline-OHRB combining system might serve as a novel strategy for the bioremediation of environments polluted with chlorinated phenols.

关键词： Reductive dechlorination Desulfitobacterium hafniense Tourmaline Electric field 2 3-dichlorophenol

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Potential Assessment of Photovoltaic Power Generation in China Based on High Temporal Resolution Scale

Potential Assessment of Photovoltaic Power Generation in Chi...

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2024 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2024

作者： Huang, Xi Wang, Jiaxing Shi, Jie Li, Yan Wang, Yuming School of Mathematics Southeast University Nanjing China School of Environment Tsinghua University State Key Joint Laboratory of Environment Simulation and Pollution Control Beijing China School of Physics and Technology University of Jinan Jinan China College of Environmental Science and Engineering Tongji University Shanghai China

ISBN: (纸本)9798350352290

Photovoltaic (PV) power generation in China has experienced promising growth and will further become a significant sector of the power system in the near future. To further utilize the variable uncertain PV resources, the PV power generation resource assessment focusing on a high temporal resolution would greatly assist China in achieving its dramatic solar development goals. In this paper, the installed PV potential of every province in China is measured by the Energy Research Institute of the National Development and Reform Commission based on the radiation intensity and temperature data with a time step of 15 minutes. Thus the real-time PV power output of 31 provinces, along with the assessment results show that China's PV power potential is 4567.0 TWh/year, which is approximately equivalent to 60% of the total social electricity consumption in 2019;as for the spatial distribution, Inner Mongolia, Xinjiang, and Tibet possess the largest PV potential in China, with power generation potential of 1281.6 TWh/year, 576.0 TWh/year, and 394.3 TWh/year, respectively;there are large quarterly and monthly varieties in the availability of PV power generation in each province. There are large monthly and quarterly differences in the temporal availability of PV power generation in each province, with the difference between the highest availability month and the lowest availability month in every province generally being larger than 150%, and the PV output also fluctuates considerably during the day in different seasons in each province. © 2024 IEEE.

关键词： Photovoltaics

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Development and assessment of an onsite large volume solid phase extraction (LV-SPE) device for the determination of pharmaceuticals and personal care products (PPCPs) in water

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Emerging Contaminants 2024年第1期10卷 24-31页

作者： Xue Cheng Ning Fang Yuxi Ge Wenchao Li Yamei Hui Zilong Tang Yu Wan Yuancheng Li State Key Joint Laboratory of Environmental Simulation and Pollution Control(SKLESPC) Beijing Key Laboratory for Emerging Organic Contaminants Control(BKLEOC)Beijing Laboratory for Environmental Frontier Technologies(BLEFT)School of EnvironmentTsinghua UniversityBeijing100084China CSD IDEA(Beijing)Environmental Test and Analysis Co. Ltd.Beijing100192China School of Public Health Shandong First Medical University&Shandong Academy of Medical ScienceShandong Province250117China

It is essential to determine the occurrence of emerging organic contaminants(EOCs),such as pharmaceuticals and personal care products(PPCPs),in the ambient environment to address growing public ***,such analysis is quite challenging due to the low trace level of such contaminants in water,which therefore requires several litres of water *** this study,a large volume solid phase extraction(LV-SPE)device was developed and evaluated for its performance in monitoring PPCPs as an *** good recoveries and reproducibility were obtained under specific operating conditions:a water sample volume of no more than 20 L,a flow rate not exceeding 120 mL/min,and a methanol elution volume of at least 30 *** addition,the results from the onsite enrichment approach using LV-SPE were compared with those from the conventional approach using a standard SPE device in the laboratory for real groundwater *** the eight selected PPCPs(nalidixic acid,carbamazepine,bezafibrate,clofibric acid,sulfadiazine,sulfamethoxypyridazine,sulfamethazine and sulfamonomethoxine),LV-SPE approach detected more target *** the detected concentrations were generally comparable,slightly higher concentrations were observed for carbamazepine,clofibric acid,sulfadiazine and sulfamethazine using the LV-SPE *** developed LV-SPE device provides an alternative approach for trace analysis of PPCPs and may also be applicable for other emerging organic contaminants.

关键词： Large-volume Solid phase extraction Onsite enrichment PPCPs Emerging organic pollutants

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