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Simultaneous hydrogen production with photo reforming of lactic acid over MXene derived MoS_(2)/TiO_(2)/Ti_(3)C_(2)nanowires

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Chinese Journal of Catalysis 2025年第4期71卷 234-245页

作者： Seemal Mansoor Zixu Hu Yuxin Zhang Muhammad Tayyab Mazhar Khan Zeeshan Akmal Liang Zhou Juying Lei Muhammad Nasir Jinlong Zhang Key Laboratory for Advanced Materials Shanghai Engineering Research Center for Multi–media Environmental Catalysis and Resource UtilizationJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090HeilongjiangChina Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina COMSATS Univ Islamabad Interdisciplinary Res Ctr Biomed Mat IRCBMLahore CampusLahore 54000Pakistan

Developing efficient photocatalysts to address collaborative energy and environmental crises still faces significant *** this report,we present a highly efficient MXene–based photocatalyst,which is combined with MoS_(2)nano patches and TiO_(2)/Ti_(3)C_(2)(TTC)nanowires through hydrothermal *** all the composites tested,the optimized photocatalyst gave a remarkable H_(2)and revolving polylactic acid(PLA)into pyruvic acid(PA).Achieving a remarkable H_(2)evolution rate of 637.1 and 243.2μmol g^(−1)h^(−1),in the presence of TEOA and PLA as a sacrificial reagent under UV-vis(λ≥365 nm)light *** improved photocatalytic activity is a result of the combination of dual cocatalyst on the surface of TTC photocatalyst,which create an ideal synergistic effect for the generation of PA and the production of H_(2)*** MoS_(2)TiO_(2)/Ti_(3)C_(2)(MTT)composite can generate more photoexcited charge carriers,leading to the generation of more active radicals,which may enhance the system's photocatalytic *** work aims at demonstrating its future significance and guide the scientific community towards a more efficient approach to commercializing H_(2)through photocatalysis.

关键词： Photo reforming Polylactic acid Hydrogen evolution Lactic acid Pyruvic acid

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Recent progress and hurdles in cathode recycling for Li-ion batteries

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Circular Economy 2024年第2期3卷

作者： Jenis, Ponraj Zhang, Ting Ramasubramanian, Brindha Lin, Sen Rayavarapu, Prasada Rao Yu, Jianguo Ramakrishna, Seeram Department of Mechanical Engineering Center for Nanofibers and Nanotechnology National University of Singapore Singapore 119260 Singapore National Engineering Research Center for Integrated Utilization of Salt Lake Resources East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai200237 China Engineering Research Center of Salt Lake Resources Process Engineering Ministry of Education East China University of Science and Technology Shanghai200237 China

This review focuses on standard Li recycling approaches for LiFePO4 (LFP) and nickel−cobalt−manganese (NCM) cathodes. The study discusses about advances in leaching agents, including organic acid, alkaline solutions, natural organic acid, and electrochemical treatments. Emphasis is placed on the significance of selective Li leaching strategies to optimize the recycling of waste batteries. The review also outlines potential future research directions for enhancing selective recycling, providing valuable insights into the recycling of LFP and NCM batteries. Simultaneously, the article addresses the challenges associated with the transition from conventional lithium-ion batteries to all-solid-state batteries (ASSBs) in the pursuit of sustainable energy storage technologies. It highlights key points, including the challenges in developing ASSBs, the role of employing various material combinations and its preparation techniques, adopting scalable solution-based processes for commercialization, and strategies for sustainable ASSB recycling. The proposition of a fully recyclable ASSB model underscores the commitment to lower recycling costs using safer and simpler methods, positioning nanotechnology as an enabling tool for achieving advancements in materials and cell-level performance. © 2024 The Author(s)

关键词： Lithium compounds

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Recent advances in catalytic filters for integrated removal of dust and NOx from flue gas:fundamentals and applications

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Resources chemicals and Materials 2022年第3期1卷 275-289页

作者： Changming Li Lin Huangfu Jianling Li Shiqiu Gao Guangwen Xu Jian Yu State Environmental Protection Key Laboratory of Food Chain Pollution Control School of Ecology and EnvironmentBeijing Technology and Business UniversityBeijing 100048China. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Pangang Group Research Institute Co.LtdPanzhihua 617000China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China. School of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142LiaoningChina

Catalytic filters including catalytic bag filters and catalytic filter candles, which couple the filters with denitrification catalysts to obtain the ability to simultaneously remove SOx, NOx and dust, have become the promising applied technology for the integrated flue gas treatment because of their huge advantages in reducing the initial investment, floor occupancy and maintenance cost. In this review, we will summarize the recent advances in the development of catalytic filters in terms of their process principles, filter material, denitrification catalysts, structure-function relationships and industrial applications. Moreover, suggestions about the current challenges and future opportunities are also given from the viewpoints of catalysts and filter material design, catalytic filter preparation methods, and their poisoning and regeneration, etc. With the further development of theory and engineering research, the extensive industrial application of catalytic filters in the field of multiple pollutants flue gas treatment is highly anticipated in the future.

关键词： Catalytic filter candles Catalytic bag filters Integrated flue gas treatment Industrial application

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Artificial humic acid produced from wet distillers grains in a microwave-assisted hydrothermal process: Physicochemical characteristics and stimulation to plant growth

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Chemosphere 2024年 364卷 142979页

作者： Lei, Tianlong Su, Jie Chang, Luyi He, Rui Shan, Guangchun Jiang, Xiaomei Lei, Yunhui Guo, Xiaobo Biogas Institute of Ministry of Agriculture and Rural Affairs Chengdu610041 China Research Center for Rural Energy and Ecology Chinese Academy of Agricultural Science Chengdu610041 China Tarim Oilfield Company PetroChina Korla841000 China State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China

Wet distillers grains, as a waste biomass with a large annual output, pose a threat to the environment and food industry. Herein, artificial humic acid (AHA) was first produced from wet distillers grains in a dual-stage microwave-assisted hydrothermal process. The influence of temperature on AHA's characteristics was investigated and compared with natural humic acid (NHA) and standard humic acid (SHA). A high yield of AHA at 20.6% was obtained at 200 °C with a total reaction time of 1 h, which is 1.8–3.1 times that obtained in traditional single-stage hydrothermal process. Increasing the reaction temperature induced the formation of phenolic hydroxyl in AHA. AHA was rich in aromaticity and carboxylic acid structure, showing similar spectral characteristics to NHA. The distribution of molecular weight of AHA was mostly 5797 Da, which decreased by 15% compared to SHA. The optimal concentration of AHA to promote seedling growth was 0.2 g/L, and the root length was 2.0 times that of the control. The microwave hydrothermal process is a facile and efficient approach to preparing AHA from waste biomass with high moisture content. © 2024 Elsevier Ltd

关键词： Microwave heating

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Ptfe Enhances In Situ Electro-Generation of H2o2 On Graphite Felt Cathode to Synchronously Degrade Cr(Vi) And Methyl Orange in the Flow-Through System

SSRN

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SSRN 2024年

作者： Li, Li Zhang, Xinwan Shi, Yaqi Yang, Zhengwu Yin, Di Chen, Peng Zhang, Lehua National Engineering Laboratory for Industrial Wastewater Treatment East China University of Science and Technology Shanghai200237 China Department of Materials Science and Engineering City University of Hong Kong Kowloon999077 Hong Kong School of Biology Food and Environment Hefei University Hefei230601 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai200237 China

The co-existence of toxic hexavalent chromium [Cr(VI)] and synthetic organic dyes in dyeing effluents is a prevalent issue, while the simultaneous removal of these co-contaminants remains a great challenge. Electrocatalytic reduction of oxygen to hydrogen peroxide (H2O2) as reductant in the flow-through systems by achieving efficient generation and utilization of active sites is a promising strategy for Cr(VI) reducing detoxification, and electro-generated H2O2 can simultaneously degrade organic contaminants via hydroxyl radicals (•OH). Herein, we demonstrated a microfluidic-based flow-through electro-Fenton-like system with modified graphite felt (GF) electrode by constructing a gas diffusion micro-channel to generate H2O2 in situ and simultaneously degrade Cr(VI) and methyl orange (MO). This synergistic removal system promoted the degradation of Cr(VI) and MO compared to those in individual contaminant systems (Cr(VI) reduction reached 99.9%, while MO removal efficiency reached 99% simultaneously). Simulation study indicated that the increased number of accessible active sites and its induced nanoscale convection in flow-through system accelerated the nanoscale interfacial mass transfer at PTFE-electrode-solution. Moreover, active species monitoring and the quantum chemical calculation were applied to explore the synergistic mechanism and detailed pathway on the degradation of co-existing contaminants. This work demonstrated the feasibility of simultaneously converting heavy metals and organic dyes, holding a great promise to removal multiple contaminants in complex wastewater. © 2024, The Authors. All rights reserved.

关键词： Azo dyes

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Fate and Toxicity of Legacy and Novel Brominated Flame Retardants in a Sediment-Water-Clam System: Bioaccumulation, Elimination, Biotransformation and Structural Damage

SSRN

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SSRN 2022年

作者： Zhou, Shanqi Fu, Mengru Luo, Kailun Qiao, Zhihua Peng, Cheng Zhang, Wei Ling, Siyuan Zhou, Bingsheng State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants Shanghai Academy of Environmental Sciences Shanghai200233 China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan430072 China Box 563 130 Meilong Road Shanghai200237 China

Legacy brominated flame retardants (LBFRs) have been gradually replaced by novel brominated flame retardants (NBFRs) because of their characteristics of persistent organic pollutants (POPs). However, till now little research focused on the effects of NBFRs on the benthos. In the present study, 0.5, 5, and 50 mg/kg of pentabromotoluene (PBT), hexabromobenzene (HBB), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), decabromodiphenyl ethane (DBDPE) and decabromodiphenyl ether (BDE209) were added into sediments to test freshwater clams (Corbicula fluminea). In the 35-day exposure experiment, C. fluminea had different enrichment behaviors in three treatment groups. It was conjectured that in the lower dose group, the clams ingested contaminants and tended to be stable over time. While in higher dose groups, the clams were induced by the chemicals, leading to the changes in physiological activities so that the concentrations showed a downward trend first and then went up. The half-lives of contaminants in freshwater clams were between 1.82-11.55 days. DBDPE showed stronger bioaccumulation ability than BDE209. Parabolic relationships were observed between log BSAF and log Kow values in clam tissues. Debromination, hydroxylation, and methoxylated products were detected. Additionally, the gill samples of C. fluminea exposed to 50 mg/kg of single substance were observed by scanning electron microscope (SEM), indicating that the adhesions, tissue hyperplasia, and messy cilia occurred on the surface. Our research potentially contributes to further evaluations of the environmental risks posed in sediments contaminated by PBT, HBB, BTBPE, DBDPE, and BDE209, particularly the benthic organisms. © 2022, The Authors. All rights reserved.

关键词： Sediments

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Differential Responses of the Electron Transfer Capacities of Soil Humic Acid and Fulvic Acid to Long-Term Wastewater Irrigation

SSRN

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SSRN 2024年

作者： Gao, Yiman Zhang, Yuan Zhang, Yifan Chen, Shuhe Su, Jing Xi, Beidou Tan, Wenbing State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing100012 China Institute of Geographical Sciences Hebei Academy of Sciences Hebei Technology Innovation Center for Geographic Information Application Shijiazhuang050011 China College of Water Sciences Beijing Normal University Beijing100875 China

Wastewater irrigation is used to supplement agricultural irrigation because of its benefits and freshwater resource scarcity. However, whether wastewater irrigation for different years affects the electron transfer capacity (ETC) of natural organic matter in soil remains unclear. The composition of soil humic substances (HS) is highly complex, and the heterogeneity of the effects of soil humic acid (HA) and fulvic acid (FA) on ETC is poorly understood. In this study, we separately evaluated the responses of the electron-accepting capacity (EAC) and electron-donating capacity (EDC) of soil HA and FA in agricultural fields to different wastewater irrigation years. Results showed that the EAC of HA and FA increased to a certain extent and significantly increased with the increase in wastewater irrigation years. When wastewater irrigation lasted for 56 years, the EAC of HA showed a higher increment (5.9 times) than that of FA (2.2 times). The EDC of soil HA and FA, alternatively, decreased. Specifically, the EDC of HA gradually decreased starting from 29 years of wastewater irrigation, whereas the decrease in the EDC of FA exhibited no clear pattern in relation to wastewater irrigation years. The irrigation of farmland with wastewater for different years could affect sucrase and phosphatase activities in soil by altering the content of soil organic matter and total N, thereby modifying the chemical structure of HA and FA and ultimately resulting in the different trends of the changes in their ETC. The results of this research provide a foundation for a deepened understanding of the role of HS in agricultural soil environments under long-term wastewater irrigation and offer practical insights for making management decisions regarding farmland soil environments under wastewater irrigation over nearly a century. © 2024, The Authors. All rights reserved.

关键词： Soils

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Trends and risk assessment of Heavy Metals in the Surface Sediments of River-Connected Lakes: A Case Study of Dongting Lake

SSRN

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SSRN 2024年

作者： Wang, Xing Yin, Xueyan Yan, Guanghan Zheng, Binghui National Engineering Laboratory for Lake Pollution Control and Ecological Restoration Chinese Research Academy of Environmental Sciences Beijing100012 China State Environmental Protection Scientific Observation and Research Station for Lake Dongting Chinese Research Academy of Environmental Sciences Beijing100012 China State Environmental Protection Key Laboratory of Drinking Water Source Protection Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China School of Ecological and Environmental Sciences East China Normal University Shanghai200241 China

This study analyzed the distribution characteristics, ecological risks, and sources of Cu, Zn, Pb, Cd, Hg, and As in the surface sediments of Dongting Lake, as well as the response of benthic macroinvertebrates. The concentrations of Cu, Zn, Pb, and As were 1.69–2.02 times the background values recorded in 1986, whereas the concentrations of Cd and Hg were 8.97 and 5.32 times , respectively. The ecological risk was low for Cu, Zn, Pb, As but high for Hg and Cd. For Dongting Lake in aggregate, the heavy metals caused considerable ecological risk and high biotoxicity, although the situation was improving in recent years. Among the six pollutants, Cd mainly come from agricultural sources, Hg, Pb, and As mainly come from mining sources, and Cu and Zn mainly come from natural weathering. Oligochaetes and Stictochironomus spp. exhibited extremely high response to heavy metals and could serve as indicator organisms © 2024, The Authors. All rights reserved.

关键词： Lakes

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Correct the Correlation Quality of Pxrf to Better Map Heavy Metal Contamination by Spatial Co-Simulationcorrect the Correlation Quality of Pxrf to Better Map Heavy Metal Contamination by Spatial Co-Simulation

SSRN

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SSRN 2023年

作者： Zhao, Manying Chen, Zengsiche Li, Shu Zhao, Yuxin Qifei, Huang Xu, Ya Yuqiang, Liu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Environmental Protection Key Laboratory of Hazardous Waste Identification and Risk Control Beijing100012 China Solid Waste and Chemicals Management Center Ministry of Ecology and Environment Beijing100029 China School of Municipal and Environmental Engineering Jilin Jianzhu University Changchun130000 China

Soil pollution, especially heavy metal pollution, is a global environmental problem. High-precision mapping based on PXRF data has been widely studied in recent years to facilitate reasonable soil management measures. Due to the poor correlation with the soil metal concentration, the original PXRF data directly used for co-simulation can not accurately map the contaminated sites with highly heterogeneous concentrations. Therefore, this study selects a former landfill-contaminated site for research, explores the best correlation mode between PXRF variants and actual heavy metal concentration, analyzes the impact of correlation quality correction on the co-simulation of the spatial distribution of heavy metals, and explores the most appropriate collaborative interpolation mode and point density. The results show that：(1) After the nonlinear change, the correlation model between PXRF and actual concentration has been significantly improved, and the correlation coefficient of five heavy metals has been increased from 0.214-0.232 to 0.936-0.986. (2) The PXRF data after correlation correction significantly improved the accuracy of co-simulation, and the average errors of heavy metals Zn, Pb, and Cu decreased by 78.2%, 45.5%, and 65.3% respectively, leading to obvious improvement of the "bull eye effect" caused by local abnormal high-value points. (3) When the point density of the main variable is lower than 4 holes/hm2, the co-simulation accuracy will be significantly reduced, indicating that the point density of the main variable should not be lower than a certain threshold during the co-simulation. (4) When the point density of the auxiliary variable exceeds 7 holes/hm2, the average error and root mean square error of the co-simulation continue to decrease, suggesting that the introduction of enough PXRF as auxiliary variables can effectively improve the accuracy of the co-simulation. © 2023, The Authors. All rights reserved.

关键词： Mapping

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Self-Enhanced Oxidation of Fluoroquinolone Antibiotics by Cu2+/Peroxymonosulfate: Copper Coordination Mechanism with Antibiotics

SSRN

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SSRN 2023年

作者： Zhao, Qing Chen, Long Wang, Zhiqiang Zhou, Lei Gong, Xueqing Xiu, Guangli Shanghai Environmental Protection Key Laboratory for Environmental Standard and Risk Management of Chemical Pollutants School of Resources & Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes School of Resources & Environmental Engineering East China University of Science and Technology Shanghai200237 China State Key Laboratory of Green Chemical Engineering and Industrial Catalysis Centre for Computational Chemistry Research Institute of Industrial Catalysis School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai200237 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Trace amounts of copper have been reported to effectively promote peroxymonosulfate (PMS) induced degradation of several contaminants, while the underlying mechanism remains controversial in the transformation process of copper. Fluoroquinolone antibiotics (FQs) are a class of drugs applied to both humans and animals, widely used in animal husbandry, aquaculture and other farming industries since they have a wide antimicrobial spectrum and strong antimicrobial activity. However, FQs are not completely absorbed by receptors, and enter the environmental media through various pathways in the form of parent or metabolite. In this study, the existence of metallic copper promoted PMS induced FQs oxidation over a range of pH 5-9, and the promotion effect was highly related with copper-FQs complexation. Formation of highly reactive trivalent copper species (Cu3+) was proposed to be responsible for such promotion effect, which was further confirmed by quenching experiments, spectroscopic analyses and electron paramagnetic resonance (EPR) test. A stepwise copper reduction-oxidation mechanism was explored, herein Cu2+ was initially reduced to Cu+ with a relatively slow rate, which can be rapidly oxidize to Cu3+ by PMS. Results obtained in this study emphasize that the system undergoes the valence transition Cu2+/Cu+/Cu3+ rather than the free radical process. In particular, the promotion of copper in the system showed a significant positive correlation with the complexation ratio, further emphasizing the key role of the coordination of pollutants with Cu (II) in the oxidative transformation. © 2023, The Authors. All rights reserved.

关键词： Copper compounds

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