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Sulfation Strategy for Ceo2 in Chlorobenzene Catalytic Combustion: Sulfate Species and Anti-Chloride Poisoning Mechanism

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SSRN 2024年

作者： Zhang, Lei Fang, Siyong Zhou, Linsen Yu, Fang Xiong, Shiqi Huang, Yangyang Zou, Weixin Dong, Lin Key Laboratory of Water Environment Evolution and Pollution Control in the Three Gorges Reservoir School of Environmental and Chemical Engineering Chongqing Three Gorges University Chongqing404000 China Institute of Materials China Academy of Engineering Physics Sichuan Mianyang621908 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Jiangsu Key Laboratory of Vehicle Emissions Control Nanjing University Nanjing210023 China

Chloride (Cl) poisoning is a challenge for the practical application of CeO2-based catalysts in the catalytic combustion of chlorinated volatile organic compounds. In this work, the CeO2 catalysts through the sulfation strategy exhibit improved resistance to Cl poisoning in the chlorobenzene (CB) catalytic combustion. Comprehensive characterizations and theoretical calculations reveal the anti-chloride poisoning mechanism and the synergistic effects of the naked CeO2 and surface sulfate are the key. The sulfation processes generate the surface and bulk-like sulfates over CeO2, and the different influences of surface and bulk-like sulfate on the catalytic activity and resistance to Cl poisoning are identified, i.e., the surface sulfate effectively prevents Cl poisoning on the naked CeO2, while the bulk-like sulfate severely inhibits the redox and O2 activation ability, leading to the decreased catalytic activity of sulfated CeO2. The work provides a simple and effective strategy for the resistance to Cl poisoning on CeO2-based catalysts. © 2024, The Authors. All rights reserved.

关键词： Cerium oxide

Surface sulfur vacancies enhanced electron transfer over Co-ZnS quantum dots for efficient degradation of plasticizer micropollutants by peroxymonosulfate activation

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Chinese Chemical Letters 2022年第8期33卷 3829-3834页

作者： Yuting Gu Tingting Gao Fagen Zhang Chao Lu Wenrui Cao Ziwei Fu Chun Hu Lai Lyu Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of EducationInstitute of Environmental Research at Greater BayGuangzhou UniversityGuangzhou 510006China Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266237China School of Environmental Science and Engineering Guangzhou UniversityGuangzhou 510006China Institute of Rural Revitalization Guangzhou UniversityGuangzhou 510006China

Peroxymonosulfate(PMS)activation in heterogeneous processes is a promising water treatment ***,the high energy consumption and low efficiency during the reaction are ineluctable,due to electron cycling rate ***,a new strategy is proposed based on a quantum dots(QDs)/PMS ***-ZnS QDs are synthesized by a water phase coprecipitation *** inequivalent lattice-doping of Co for Zn leads to the generation of surface sulfur vacancies(SVs),which modulates the surface of the catalyst to form an electronic nonequilibrium ***,the plasticizer micropollutants can be completely degraded within only tens of seconds in the Co-Zn S QDs/PMS system due to this type of surface *** interfacial reaction mechanism is revealed that pollutants tend to be adsorbed on the cobalt metal sites as the electron donors,where the internal electrons of pollutants are captured by the metal species and transferred to the surface ***,PMS adsorbed on the SVs is reduced to radicals by capturing electrons,achieving effective electron *** oxygen(DO)molecules are also easily attracted to catalyst defects and are reduced to O_(2)^(·-),further promoting the degradation of pollutants.

关键词： Peroxymonosulfate activation Sulfur vacancy Quantum dots ZnS Plasticizer

Insights into the synergistic toxicity mechanisms caused by nano- and microplastics with triclosan using a dose-dependent functional genomics approach in Saccharomyces cerevisiae

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Chemosphere 2024年 362卷 142629页

作者： Zong, Linhao Wang, Xiaoyang Huo, Miaomiao Yi, Fangying Huang, Shan Ling, Tianqi Fang, Yumo Ma, Fei Zhang, Xiaowei Guan, Miao Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University 1 Wenyuan Rd. Jiangsu Nanjing210023 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University 163 Xianlin Ave. Jiangsu Nanjing210023 China

The emergence of polystyrene (PS) nano- and microplastics (NMPs) and triclosan (TCS) as environmental contaminants has raised concerns about their combined toxicities to organisms, but the complex toxicity arising from their interactions and the underlying molecular mechanisms remain obscure to us. In this study, we comprehensively detected the combined toxicity of PS-NMPs and TCS via the dose-dependent yeast functional genomics profiling. Firstly, our findings demonstrated that the combined exposure to PS-NMPs and TCS elicited a synergistic toxic effect in which the toxicity depended on the size of the PS-NMPs. Secondly, we found that TCS exposure, either alone or in combination with PS-NMPs, influenced lipid biosynthetic processes and ATP export pathways, while the unique responsive genes triggered by combined exposure to TCS and PS-NMPs are significantly enriched in mitochondrial translation, ribosomal small subunit assembly, and tRNA wobble uridine modification. Thirdly, our results demonstrated that point of departure (POD) at the pathway level was positively correlated with IC50, and POD was a more sensitive predictor of toxicity than the apical toxicity endpoints. More importantly, our findings suggested that the combined exposure of PS-NMPs in a size-dependent manner not only alleviated the harmful effects of TCS on glycerophospholipid metabolism, but also exacerbated its negative impact on oxidative phosphorylation. Collectively, our study not only provides new insights into the intricate molecular mechanisms that control the combined toxicity of PS-NMPs and TCS, but also confirms the effectiveness of the dose-dependent functional genomics approach in elucidating the molecular mechanisms of the combined toxicity of pollutants. © 2024 Elsevier Ltd

关键词： Yeast

Review:Progress in Core-shell Rubber Particles for Efficiently Toughening Resins

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Journal of Harbin Institute of Technology(New Series) 2022年第6期29卷 34-63页

作者： Xin-Gui Li Xiong Wang Mei-Rong Huang Yue-Shan He Fei Liu Wei-Hong Xu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education College of Materials Science and EngineeringTongji UniversityShanghai 200092China Shenzhen Newfilms New Materials Technology Co. LtdShenzhen 518106GuangdongChina

Core-shell toughening particles are structured composite particles consisting of generally two different components, one at the center as a rubbery elastic core and surrounding by the second as a glassy inelastic shell. The design, preparation, and application of core-shell polymer particles have been briefly reviewed. Morphological characteristics of the core-shell particles by transmission electron microscopy(TEM) and scanning electron microscopy(SEM) are focused. The vital factors that are useful to control core-shell morphology and toughening properties including core-shell monomer species, polymerization conditions, cross-linking reagents, synthetic method, and post-processing techniques are analyzed. Distinguished properties are mainly considered as the most desirable features that endow core-shell polymer particles with various applicabilities, particularly as effectively toughening components in brittle epoxy resin and polylactide that are substrate of copper clad laminate widely used in the modern electronic world and environmentally friendly materials that are useful as packaging films, disposable tableware, biomedical equipment, and new energy vehicles.

关键词： core-shell particle rubbery core glassy shell brittle resin toughening epoxy resin electronic material

Construction of Embedded CDS Nanosheets@PEA2PbBr4 Nanoplate P-N Heterojunction Photocatalysts with Spatial Charge Transfer for Enhanced Benzylic C(sp3)-H Bond Oxidation

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SSRN 2023年

作者： Chen, Ying Shan, Tao Shen, Lijuan Xue, Hun Yang, Min-Quan College of Environmental and Resource Sciences College of Carbon Neutral Modern Industry Fujian Key Laboratory of Pollution Control & Resource Reuse Fujian Normal University Fuzhou350117 China

Metal halide perovskites (MHP) have been deemed as a new-generation promising photocatalysts due to the excellent photoelectric properties. Herein, a novel CdS nanosheets@PEA2PbBr4 nanoplate p-n heterojunction has been for the first time fabricated using a simple anti-solvent method for photocatalytic activation of benzylic C(sp3)-H bond. The in-situ strategy enables the fast growth of PEA2PbBr4 nanoplate to wrap the CdS nanosheets that act as nucleation sites, thereby forming an embedded structure with large and intimate contact interface, which can provide abundant charge transfer channels. In addition, the staggered band structure with large difference in Fermi levels between the p-PEA2PbBr4 and the n-CdS form a strong internal electric field (IEF) that greatly accelerates the migration and realizes the spatial separation of photoinduced electrons and holes in the heterojunction. Under visible light irradiation, the CdS@PEA2PbBr4 heterojunction displays notably improved photocatalytic C(sp3)-H bond oxidation activity. The optimized 5% CdS@PEA2PbBr4 exhibits a benzyl aldehyde (BAD) production rate of 4320 μmol g-1 h-1, which is 5-folds higher than pure PEA2PbBr4 (950 μmol g-1 h-1), and 18-folds enhanced in comparison with blank CdS (240 μmol g-1 h-1). Mechanism study reveals that h+, •O2- and 1O2 are the main active species contributing to the C(sp3)-H bond oxidation. This work reports the first photocatalytic application of the PEA2PbBr4, and provides insights for developing MHP-based in-situ heterojunction with desired nanostructure to further enhance the photocatalytic performance. © 2023, The Authors. All rights reserved.

关键词： Cadmium sulfide

Oxygen Vacancy-Modified Fast Charge Transport Channels at the Interface of Bismuth S-Scheme Heterojunctions Promoting Photocatalytic Performance

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SSRN 2024年

作者： Deng, Huiping Liu, Jiawei Zhang, Zhilin Lin, Junhao Zhen, Li Jiang, Qingyang Shi, Jun State Key Laboratory of Pollution Control and Resources Reuse Shanghai Institute of Pollution Control and Ecological Security Key Laboratory of Yangtze River Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China Anhui University of Technology China

While oxygen vacancy (Ov) in single semiconductor photocatalysts have been widely studied, the investigation and deep understanding of electron transfer and intrinsic mechanisms of Ov in heterojunction photocatalysts, particularly S-scheme heterojunctions, remain limited. In this study, we designed and constructed novel oxygen vacancy-rich Ov-Bi4O7/Bi3.64Mo0.36O6.55 (MOB) S-scheme heterojunction catalysts. These catalysts couple oxygen vacancy-rich Bi4O7 with Bi3.64Mo0.36O6.55 (BMO) to facilitate heterojunction interfacial charge transfer and create oxygen vacancy-rich active centers. The optimized MOB-32 heterojunction degraded tetracycline (TC) by 97.6% under light irradiation. The introduction of Ov optimized the microenvironment and local electronic structure in the S-scheme heterojunction. Femtosecond transient absorption spectroscopy (Fs-TAS) reveals that Ov introduce additional charge transport pathways, thereby enhancing charge separation efficiency. This study offers new insights into the dynamics of photogenerated carriers at oxygen vacancy-modulated heterogeneous interfaces and aids in the design of efficient S-scheme photocatalysts. © 2024, The Authors. All rights reserved.

关键词： Transient absorption spectroscopy

Single and Combined Effects of Polyethylene Microplastics and Acetochlor on Accumulation and Intestinal Toxicity of Zebrafish (Danio Rerio)

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SSRN 2023年

作者： Wang, Yang Zhao, Yuexing Liang, Hongwu Ma, Chaofan Cui, Naqi Cao, Huihui Liu, Yu Wei, Wei Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse School of Ecology and Environment Inner Mongolia University Hohhot010030 China

The co-exposure of microplastics (MPs) and other contaminants has aroused extensive attention, but the combined impacts of MPs and pesticides remain poorly understood. Acetochlor (ACT), a widely used chloroacetamide herbicide, has raised concerns for its potential bio-adverse effects. This study evaluated the influences of MPs for acute toxicity, bioaccumulation, and intestinal toxicity in zebrafish to ACT. We found that MPs significantly enhanced ACT acute toxicity. Also, MPs increased the accumulation of ACT in zebrafish and aggravate the oxidative stress damage of ACT in intestines. Exposure to MPs or/and ACT causes mild damage to the gut tissue of zebrafish and altered gut microbial composition. In terms of gene transcription, ACT exposure triggered a significant increase in inflammatory response-related gene expressions in the intestines, while some pro-inflammatory factors were found to be inhibited by MPs. This study provides a new perspective on the fate of MPs in the environment and on the assessment of the combined effects of MPs and pesticides on organisms. © 2023, The Authors. All rights reserved.

关键词： Microplastic

Purple acid phosphatase promoted hydrolysis of organophosphate pesticides in microalgae

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Environmental Science and Ecotechnology 2024年第2期18卷 137-149页

作者： Xiang Wang Guo-Hui He Zhen-Yao Wang Hui-Ying Xu Jin-Hua Mou Zi-Hao Qin Carol Sze Ki Lin Wei-Dong Yang Yalei Zhang Hong-Ye Li Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes College of Life Science and TechnologyJinan UniversityGuangzhou510632China School of Energy and Environment City University of Hong KongTat Chee AvenueKowloonHong Kong Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW2007Australia Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou510000China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China

When organophosphate pesticides(OPs)are not used and handled in accordance with the current rules and standards,it results in serious threats to the aquatic environment and human *** tricornutum is a prospective microalgae-based system for pollutant removal and carbon *** engineered ***,designated as the OE line(endogenously expressing purple acid phosphatase 1[PAP1]),can utilize organic phosphorus for cellular ***,the competencies and mechanisms of the microalgae-based system(namely the OE line of ***)for metabolizing OPs remain to be *** this study,the OE line exhibited the effective biodegradation competencies of 72.12%and 68.2%for 30 mg L^(-1)of dichlorvos and 50 mg L^(-1)of glyphosate,accompanied by synergistic accumulations of biomass(0.91 and 0.95 g L^(-1))and lipids(32.71%and 32.08%),***,the biodiesel properties of the lipids from the OE line manifested a high potential as an alternative feedstock for microalgae-based biofuel production.A plausible mechanism of OPs biodegraded by overexpressed PAP1 is that sufficient inorganic P for adenosine triphosphate and concurrent carbon flux for the reduced form of nicotinamide adenine dinucleotide phosphate biosynthesis,which improved the OP tolerance and biodegradation competencies by regulating the antioxidant system,delaying programmed cell death and accumulating lipids via the upregulation of related *** sum up,this study demonstrates a potential strategy using a genetically engineered strain of *** to remove high concentrations of OPs with the simultaneous production of biomass and biofuels,which might provide novel insights for microalgae-based pollutant biodegradation.

关键词： Biodegradation Lipid accumulation Organophosphate pesticide Phaeodactylum tricornutum Purple acid phosphatase

Localized heating coupling with radical oxidation eliminating antibiotic resistance genes (ARGs) in interfacial photothermal Fenton-like disinfection process

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Science of the Total Environment 2024年 955卷 176779页

作者： Hou, Haozheng Zou, Dingli Shi, Weiye Wang, Yingying Ma, Defang Wang, Yan Li, Qian Gao, Yue Gao, Baoyu Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Qingdao266237 China No.1 Institute of Geology and Mineral Resources of Shandong Province Jinan250014 China

Conventional oxidative disinfection processes are inefficient in eliminating intracellular antibiotic resistance genes (iARGs) due to the barrier of the cell membrane and the competitive reaction of cellular constituents within antibiotic-resistant bacteria (ARB), resulting in the widespread prevalence of ARGs in recycled water. This study presented the first application of localized heating coupling with advanced oxidation to destroy the resistant Escherichia coli cells and improved subsequent iARGs (blaTEM-1) degradation in a novel photothermal Fenton-like disinfection process. The Fe-Mn@CNT microfiltration membrane, comprising carbon nanotubes wrapped with Fe and Mn nanoparticles (Fe-Mn@CNT), was employed as a nanomaterial for photothermal conversion and H2O2 activation. The highly efficient absorption of full-spectrum photons by CNTs enabled the Fe-Mn@CNT membrane to concentrate light to generate localized intense heat, resulting in the destruction of ARB nearby, and the subsequent release of iARGs. Interfacial heat favored Fe-Mn-induced H2O2 activation, leading to the production of more ·OH, which in turn promoted the oxidation for ARG degradation and ARB cell damage. The results of the acetylcysteine quenching experiments indicated that interfacial heating and radical oxidation-induced accumulation of intracellular reactive oxygen species contributed to the elimination of about 1-log iARGs through direct attack. The integrity of the cell membrane, the morphology of ARB and the variation of i/e ARG copy numbers were observed to reveal that the introduction of interfacial heating aggravated the cell lysis and accelerated the iARGs release, resulting in the inactivation of 7.27-log ARB and the elimination of 4.64-log iARGs and 2.23-log eARGs. Localized heating coupling with ·OH oxidation achieved a 143 % increase in iARGs removal compared to the conventional Fenton-like oxidation. The interfacial photothermal Fenton-like disinfection process exhibited remarkable

关键词： Escherichia coli