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Mixed-valence Cu-based metal-organic framework for selective CO_(2) electroreduction to C_(1) liquid fuels with high energy conversion efficiency

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Nano Research 2025年第4期18卷 153-160页

作者： Luyao Wang Fengting Li Yifan Gu College of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Key Laboratory of Cities’Mitigation and Adaptation to Climate Change ShanghaiChina Meteorological Administration(CMA)Tongji UniversityShanghai 200092China

Efficient CO_(2) electroreduction requires catalysts for enhanced energy conversion efficiency and carbon product selectivity with low overpotential,in consideration of the interference of competitive H_(2) evolution reaction and complex intermediate species *** proposed that adaptive electronic structures based on dynamic mixed-valence interconversion would facilitate electron transfer and intermediate turnover during the catalysis,ensuring high activity,selectivity,and ***,a novel mixed-valence Cu-based metal-organic framework was prepared using an electron-rich linker for electrocatalytic reduction of CO_(2).The designed material delivered a remarkable Faradaic efficiency of 99.2%for C_(1) liquid fuels at a low reduction potential of -0.1 V versus reversible hydrogen electrode,considerably higher than that of the commercial copper foam and competitive to the Cu-based electrocatalysts *** experimental data and theoretical calculations verified the Cu(Ⅰ)/Cu(Ⅱ)interconversion and the much higher energy barrier of H2 evolution than carbon product *** a feasible strategy,simultaneously improving energy conversion efficiency,carbon product selectivity,and structural robustness,provides great insights into rational catalyst customization for sustainable CO_(2) conversion.

关键词： metal-organic frameworks CO_(2)electroreduction mixed-valence energy conversion efficiency liquid fuels catalysis

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Enzymatic pretreatment mitigates the dissemination of antibiotic resistance genes via regulating microbial populations and gene expressions during food waste fermentation

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Chinese Chemical Letters 2023年第8期34卷 259-264页

作者： Yang Wu Wanying Hu Haining Huang Xiong Zheng Lei Dong Yinguang Chen State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Food waste(FW)has been recognized as essential reservoir for resource recovery via anaerobic fermentation,which could also bring the potential risk of antibiotic resistance genes(ARGs)*** the structural deficiency of FW could be stimulated by enzymatic pretreatment to enhance fermentation efficiency,the influences of enzymatic pretreatment on ARGs fate and microbial metabolic pathways involved in ARGs dissemination have rarely been *** work proved that enzymatic pretreatment could effectively decrease the total abundance of ARGs(reduced by 13.8%-24.5%)during long-term FW *** was found that enzymatic pretreatment significantly reduced the ARGs belonging to the efflux pump,which might be ascribed to its ability to increase membrane ***,enzymatic pretreatment was in favor of reducing microbial diversity and various potential ARGs host(e.g.,Methanosarcina,Clostridium,Prevotella,Parabacteroides).Also,this pretreatment remarkably up-regulated the genetic expressions involved in ABC transporter(e.g.,eryF and mntA)and down-regulated the genetic expressions that participated in DNA replication,two-component systems(e.g.,uphA and cckA),and quorum sensing(e.g.,rpfF and lsrG),thereby decreasing ARGs *** study would expand the insight of the influences of pretreatment method on ARGs fate during FW fermentation,and offer practical guidance on the sustainable management of FW.

关键词： Food waste(FW) Antibiotic resistance genes(ARGs) Enzymatic pretreatment Microbial populations Metabolic pathways

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Release characteristics of arsenic from sediments and its source or sink competition with phosphorus:A case of a great lake with grass-algae alternation

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Journal of Environmental Sciences 2025年第3期149卷 278-287页

作者： Shuhang Wang Yongsheng Chang Wei Huang Dianhai Yang Feifei Che State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China College of Environmental Science and Engineering Donghua UniversityShanghai 201620China National Engineering Laboratory for Lake Pollution Control and Ecological Restoration Chinese Research Academy of Environmental SciencesBeijing 100012China

The arsenic(As)release from sediments in great lakes is affected by various *** this study,the characteristics of As release fromsediments was investigated,and the As sources and sinks with the strengths in sediments from different areas(grass-type,algae-type,and grass-algae alternation areas)in great shallow lakes(Taihu Lake,china)were analyzed,and the influence of P competition in the process of As release was also *** results showed that changing trend of the values of equilibrium As concentration in sediments were consistent with the regional changes(0 to 28.12μg/L),and the sediments from algaetype areas had the higher *** sediments from western lake and northwest lake bay were a strong As and a weak P source,and the north lake bay had the opposite trend of these two *** P source competition with As from the sediments occurred in algae-type *** grass-type areas had strong As and P retention capacities,indicating a sink role of sediment with high As and P sorption *** degree of As and P saturation had similar trend in sediments,and the grass-type areas had the higher values,18.3%-21.4%and 15.31%-20.34%,*** analysis results showed that most of As release contribution was from the bottom(30-50 cm)sediments,and the surface(0-10 cm)sediments from algae-type areas contributed more to the overlying water than other region.

关键词： Arsenic Phosphorus Sediment Source and sink Contribution

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C14-HSL limits the mycelial morphology of pathogen Trichosporon cells but enhances their aggregation:Mechanisms and implications

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Chinese Chemical Letters 2024年第6期35卷 398-403页

作者： Xin Lu Haoran Sun Xiaomeng Li Chunrui Li Jinfeng Wang Dandan Zhou Jilin Engineering Lab for Water Pollution Control and Resources Recovery School of the EnvironmentNortheast Normal UniversityChangchun 130117China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The biosecurity hazards caused by pathogenic fungus have been widely *** the long-term coexistence of eukaryotic pathogens and quorum sensing bacteria in different habitats in environments,we hypothesized that they have social interactions via signal *** this work,we firstly discovered the well-known bacterial signal molecules play an adverse role in the cell morphology and metabolism in a model pathogen Trichosporon asahii.N-Tetradecanoyl-L-homoserine lactone(C14-HSL)was discovered to increase pathogen hazards of ***,which limited mycelium by 52%,but enhanced cell aggregation by 93%.Higher fluorescence intensity of tryptophan(59%)and aromatic protein(2-fold)contents after the treatment of C14-HSL,indicating that aromatic proteins helped aggregate Trichosporon and showed *** analysis revealed that C14-HSL upregulated the shikimate pathway(above1-fold)located in downstream of tricarboxylic acid cycle,which contributed to the synthesis of more aromatic proteins and the formation of larger *** limited mycelial growth of *** attributed to the up-regulated expressions of cell cycle *** fungal transboundary response to bacterial C14-HSL was controlled by signal transduction *** study provides new insights into the co-evolution of bacterial and pathogenic fungi in microecosystems.

关键词： Bacterial C14-HSL Mycelium Cell cycle Aggregation Aromatic proteins

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Preparation and photocatalytic performance study of dual Z-scheme Bi_(2)Zr_(2)O_(7)/g-C_(3)N4/Ag_(3)PO_(4) for removal of antibiotics by visible-light

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Journal of Environmental Sciences 2023年第3期125卷 349-361页

作者： Zhengjun Qu Zhenyang Jing Xiaoming Chen Zexiang Wang Hongfei Ren Lihui Huang Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266237China

At present,the high re-combination rate of photogenerated carriers and the low redox capability of the photocatalyst are two factors that severely limit the improvement of photocatalytic ***,a dual Z-scheme photocatalyst bismuthzirconate/graphitic carbon nitride/silver phosphate (Bi_(2)Zr_(2)O_(7)/g-C_(3)N4/Ag_(3)PO_(4)(BCA)) was synthesized using a co-precipitation method,and a dual Z-scheme heterojunction photocatalytic system was established to decrease the high re-combination rate of photogenerated carriers and consequently improve the photocatalytic *** re-combination of electron-hole pairs(e-and h+) in the valence band (VB) of g-C_(3)N4increases the redox potential of e-and h+,leading to significant improvements in the redox capability of the photocatalyst and the efficiency of e--h+*** a photosensitizer,Ag_(3)PO_(4)can enhance the visible light absorption capacity of the *** prepared photocatalyst showed strong stability,which was attributed to the efficient suppression of photo-corrosion of Ag_(3)PO_(4)by transferring the e-to the VB of g-C_(3)*** was degraded efficiently by BCA-10%(the BCA with 10 wt.%of AgPO_(4)) under visible light,and the degradation efficiency was up to 86.2%.This study experimentally suggested that the BCA photocatalyst has broad application prospects in removing antibiotic pollution.

关键词： Photocatalysis Bi_(2)Zr_(2)O_(7)/g-C_(3)N4/Ag_(3)PO_(4) Dual Z-scheme photocatalytic system Visible light Tetracycline

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Diversity and dynamic response of anaerobic ammonia oxidation granular sludge

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Journal of Environmental Sciences 2025年第6期152卷 262-275页

作者： Jiahong Ye Xiang Li Yan Yuan Yayi Wang Yong Huang JunMa Han Wang Pengze Dang Pei-ling Xu School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China State Key Laboratory of Pollution Control and Resources Reuse Shanghai Institute of Pollution Control and Ecological SecurityCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China

Red anaerobic ammonia oxidation (Anammox) granular sludge (AnGS) has been reported insuccessfully operating Anammox systems, and its color is associated with sludge ***, in long-term operating systems, AnGS exhibits different sensory colors, physicalstructures, community structures, and denitrification performance, but the relationship betweenthem has not yet been *** AnGS of the Anammox system, which has beenin operation for more than a decade, can be divided into twomain categories: red and *** specific Anammox activity (SAA) in conventional red AnGS increased continuously asthe particle size increased from <0.51 mm to 6.02 ± 0.84 mm. The SAA of white AnGS wereslightly lower than those of red AnGS with similarly-size granules but significantly higherthan AnGS with smaller red granules. Compared with red AnGS, the extracellular polymericsubstances of white AnGS were significantly reduced,mainly due to the higher intracellulariron content, resulting in lower heme c concentration. Thus, heme c may prove not to bean evaluative tool for measuring Anammox activity. Red and white AnGS, whether throughself-aggregation or adsorption by hydroxyl apatite and other carriers, will face the fate ofinternal voids during particle size growth. White AnGS exhibited amore complex microbialcommunity than red AnGS. Candidatus Brocadia was abundant in red AnGS and the abundanceincreased with increasing granule size. Candidatus Kuenenia and Candidatus Jetteniamade significant contributions to denitrification in white AnGS. This study provides a newperspective on particle selection for anammox engineering applications.

关键词： Anaerobic ammonium oxidation granular sludge Sensory diversity Intracellular iron Heme Enzyme activity Microbial diversity

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Toward a rapid and convenient nanoplastic quantification method in laboratory-scale study based on fluorescence intensity

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 117-126页

作者： Ruiqi Yan Sen Lin Qian Ding Lei Zhang Xia Yu Wentao Zhao Qian Sui State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai200237China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

The thorough investigation of nanoplastics(NPs)in aqueous environments requires efficient and expeditious quantitative analytical methods that are sensitive to environmentally relevant NP concentrations and convenient to *** analysis-based quantitative methods have been acknowledged as effective and rapid approaches for quantifying NP concentrations in laboratory-scale ***,we compared three commonly used optical response indicators,namely fluorescence intensity(FI),ultraviolet absorbance,and turbidity,to assess their performance in quantifying ***,orthogonal experiments were conducted to evaluate the influence of various water quality parameters on the preferred indicator-based quantification *** results revealed that FI exhibits the highest correlation coefficient(>0.99)with NP ***,the limit of quantification(LOQ)for various types of NPs is exceptionally low,ranging from 0.0089 to 0.0584 mg/L in ultrapure water,well below environmentally relevant *** variations in water quality parameters such as pH,salinity,suspended solids(SS),and humic acid,a robust relationship between detectable FI and NP concentration was ***,an increased matrix,especially SS in water samples,results in an enhanced LOQ for ***,the quantitative method remains applicable in real water bodies,especially in drinking water,with NP LOQ as low as 0.0157–0.0711 mg/*** exceeds the previously reported detectable concentration for 100 nm NPs at 40µg/mL using surface-enhanced Raman *** study confirms the potential of FI as a reliable indicator for the rapid quantification of NPs in aqueous environments,offering substantial advantages in terms of both convenience and cost-effectiveness.

关键词： Nanoplastic quantification Fluorescence intensity Drinking water Limit of quantification(LOQ) Matrix effects

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Evaluating a river's ecological health: A multidimensional approach

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Environmental Science and Ecotechnology 2024年第5期21卷 268-277页

作者： Qiuyun Zhao Yangyang Zhang Xiuwen Li Xiaodong Hu Rui Huang Jixiong Xu Zilong Yin Xinjie Gu Yuncheng Xu Jinbao Yin Qing Zhou Aimin Li Peng Shi State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing210023China Jiangsu Hydraulic Research Institute Nanjing210023China

Evaluating the health of river surface water is essential,as rivers support significant biological resources and serve as vital drinking water *** the Water Quality Index(WQI)is commonly employed to evaluate surface water quality,it fails to consider biodiversity and does not fully capture the ecological health of *** we show a comprehensive assessment of the ecological health of surface water in the lower Yangtze River(LYR),integrating chemical and biological *** to traditional WQI metrics,the LYR's surface water generally meets china's Class II ***,it also contains 43 high-risk emerging contaminants;nitrobenzenes are found at the highest concentrations,representing 25e90%of total detections,while polycyclic aromatic hydrocarbons present the most substantial environmental risks,accounting for 81e93%of the total risk ***,the plankton-based index of biological integrity(P-IBI)rates the ecological health of the majority of LYR water samples(59.7%)as‘fair’,with significantly better health observed in autumn compared to other seasons(p<0.01).Our findings suggest that including emerging contaminants and P-IBI as additional metrics can enhance the traditional WQI analysis in evaluating surface water's ecological *** results highlight the need for a multidimensional assessment approach and call for improvements to LYR's ecological health,focusing on emerging contaminants and biodiversity rather than solely on reducing conventional indicators.

关键词： The lower reaches of the Yangtze River High-risk emerging contaminants Plankton Ecological risk Biological integrity

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Effects of DOM characteristics from real wastewater on the degradation of pharmaceutically active compounds by the UV/H_(2)O_(2) process

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Journal of Environmental Sciences 2022年第6期34卷 220-228页

作者： Yufei Shi Jinju Geng Xiang Li Yuli Qian Hongzhou Li Liye Wang Gang Wu Qingmiao Yu Ke Xu Hongqiang Ren State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210008China

The characteristics of dissolved organic matter(DOM) can significantly affect the degradation of target compounds by the advanced oxidation processes. In this study, the effects of the different hydrophobicity/hydrophilicity fractions, molecular weight(MW) fractions,fluorescence components and molecular components of DOM extracted from municipal wastewater on the degradation of 4 pharmaceutically active compounds(Ph ACs), including carbamazepine, clofibric acid, atenolol and erythromycin by the UV/H_(2)O_(2) process were investigated. The results showed that the degradation rate constants of 4 Ph ACs decreased dramatically in the presence of DOM. The linear regressions of 4 Ph ACs degradation as a function of specific fluorescence intensity(SFI) are exhibited during the degradation of 4Ph ACs and the SFI may be used to evaluate effect of DOM on target compounds in wastewater. The hydrophobic acid(HPO-A) exhibited the strongest inhibitory effect on degradation of 4 Ph ACs during oxidation process. The small MW fractions of DOM significantly inhibited the degradation of 4 Ph ACs during oxidation process. Among three fluorescence components,hydrophobic humic-like substances may significantly inhibit the degradation of 4 Ph ACs during oxidation process. At the molecular level, the formulas may be derived from terrestrial sources. CHO compound may significantly inhibit the degradation of 4 Ph ACs during oxidation process on formula classes. The unsaturated hydrocarbons, carbohydrates and tannins compounds may significantly inhibit the effectiveness of the UV/H_(2)O_(2) process on compound classes.

关键词： DOM UV/H_(2)O_(2) PhACs Effect Real wastewater

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Coking of Pt/γ-Al_(2)O_(3) catalyst in landfill gas deoxygen and its effects on catalytic performance

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Chinese Journal of Chemical Engineering 2023年第5期57卷 224-232页

作者： Xinyu Yang Zezhi Chen Huijuan Gong State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China Center of Materials Analysis Nanjing UniversityNanjing 210093China

Catalytic oxidation of CH_(4) has been proved to be an attractive option for landfill gas(LFG) ***, coking of catalysts in catalytic LFG deoxygen has been clearly observed in industrial applications. In this regard, it is necessary to investigate whether coke deposition originates from CH_(4) or volatile organic compounds present in LFG, and the influence of coke deposition on catalytic performance. Herein,we evaluate the LFG deoxygen on Pt/γ-Al_(2)O_(3) catalyst in simulated LFG(CH_(4), CO_(2), O_(2), N_(2)) and its co-feed with representative volatile organic compounds, ethylbenzene, toluene, benzene and cyclohexane. The results show that the coking of the catalyst is originated from volatile organic compounds rather than CH_(4). The Pt/γ-Al_(2)O_(3) catalyst does not deactivate during LFG deoxygen process, even significant amount of coke deposited, up to 18.15%(mass). Characterization analyses reveal that although coke deposition overall covers the catalyst surface, resulting in mesopores blockage and a reduced number of accessible Pt sites, however, the coke formed, H-rich carbonaceous components, behaves as counterpart for O_(2) elimination. Besides, the coke deposited is mainly filamentous. Thus, coke formation has little negative effect on the overall catalytic performance of Pt/γ-Al_(2)O_(3) catalyst ultimately. The results obtained in this work are helpful for the rational design of robust Pt based catalysts for LFG deoxygen without undue attention to their coking properties, and also favor the innovation of more attractive purification scheme configurations.

关键词： Landfill gas Deoxygen Pt/γ-Al_(2)O_(3) Volatile organic compounds Coke deposition

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