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Investigation into enhanced performance of toluene and Hg^(0) stimulative abatement over Cr-Mn oxides co-modified columnar activated coke

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Journal of environmental sciences 2025年第2期148卷 88-106页

作者： Jiajie Wang Jie Liu Lei Gao Dong Xie Caiting Li Liping Xiang Huiyu Xiong Jiaqi Xie Tianren Zhang Yueguo Pan School of Resources Environment and Safety Engineering University of South ChinaHengyang 421001China National&Local Joint Engineering Research Center for Airborne Pollutants Control and Radioactivity Protection in Buildings Hengyang 421001China Key Laboratory of Prefabricated Building Energy Saving Technology of Hunan Province Hengyang 421001China College of Environmental Science and Engineering Hunan UniversityChangsha 410082China

In this study,a string of Cr-Mnco-modified activated coke catalysts(XCryMn1-y/AC)were prepared to investigate toluene and Hg^(0) removal *** characterizations including XRD,TEM,SEM,in situ DRIFTS,BET,XPS and H_(2)-TPR showed that 4%Cr0.5Mn0.5/AC had excellent physicochemical properties and exhibited the best toluene and Hg^(0) removal efficiency at 200℃.By varying the experimental gas components and conditions,it was found that too large weight hourly space velocity would reduce the removal efficiency of toluene and Hg^(0).Although O_(2) promoted the abatement of toluene and Hg^(0),the inhibitory role of H_(2)O and SO_(2) offset the promoting effect of O_(2) to some *** significantly inhibited Hg^(0) removal,resulting from that toluene was present at concentrations orders of magnitude greater than mercury’s or the catalyst was more prone to adsorb toluene,while Hg^(0) almost exerted non-existent influence on toluene *** mechanistic analysis showed that the forms of toluene and Hg^(0) removal included both adsorption and oxidation,where the high-valent metal cations and oxygen vacancy clusters promoted the redox cycle of Cr^(3+)+Mn^(3+)/Mn^(4+)+Cr^(6+)+Mn^(2+),which facilitated the conversion and replenishment of reactive oxygen species in the oxidation process,and even the CrMn_(1.5)O_(4) spinel structure could provide a larger catalytic interface,thus enhancing the adsorption/oxidation of toluene and Hg^(0).Therefore,its excellent physicochemical properties make it a costeffective potential industrial catalyst with outstanding synergistic toluene and Hg^(0) removal performance and preeminent resistance to H_(2)O and SO_(2).

关键词： Toluene Element mercury Cr-Mn oxides Activated coke

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Applications of CeO_(2)-based heterojunctions in photocatalytic bactericidal and antitumor therapy

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Journal of Rare Earths 2025年第3期43卷 441-452,I0002页

作者： Chengzhang Zhu Qihang Tian Binghan Wang Jiahui Liu Jiaao Han Shukun Le Peipei Liu Yang Wu Haitao Xu School of Environmental Science and Engineering Nanjing Tech UniversityNanjing210009China Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources Chemical Engineering CollegeInner Mongolia University of TechnologyHohhot010050China National Institute of Scientific Research-Energy Materialsand TelecommunicationsJ3X 1P7QCCanada National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research InstituteMacao University of Science and TechnologyMacao SAR999078China Nanjing Gekof Institute of Environmental Protection Technology&Equipment Co. Ltd.Nanjing211100China

The rapid development of rare earth metal elements in the field of photocatalysis is due to their excellent optical and physicochemical *** from the unique external electronic structure of 4f_15d_16S_2,superior electronegativity of the 4f orbitals,and strong oxygen storage-release ability in Ce^(4+)/Ce^(3+)reversible pairs,cerium dioxide(CeO_(2))has attracted increasing interest from ***,the fast recombination of photoinduced electron-hole pairs and wide energy band gap of bare CeO_(2)significantly limit its practical *** overcome the above drawbacks,the construction of heterojunctions has been developed to broaden the absorption spectrum and accelerate the charge *** review presents a mini-review of the synthesis of CeO_(2)-based heterojunctions including typeⅡ,Z-scheme,and S-scheme photocatalysts,as well as the corresponding applications in photocatalytic bactericidal and antitumor ***,the latest advancements and potential perspectives on their future development are also discussed.

关键词： Rare earths Heterojunction Photocatalysis Bacteriostasis Antitumor therapy

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P-tuned FeN_(2)binuclear sites for boosted CO_(2)electro-reduction

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Journal of Energy Chemistry 2025年第2期101卷 816-824,I0018页

作者： Cao Guo Sanshuang Gao Jun Li Menglin Zhou Abdukader Abdukayum Qingquan Kong Yingtang Zhou Guangzhi Hu School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesSchool of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina Xinjiang Key Laboratory of Novel Functional Materials Chemistry College of Chemistry and Environmental SciencesKashi UniversityKashi 844000XinjiangChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004ZhejiangChina

The recycling of CO_(2)through electrochemical processes offers a promising solution for alleviating the greenhouse effect;however,the activation of CO_(2)and desorption of^(*)CO in electrocatalytic CO_(2)reduction(ECR)frequently encounter high energy barriers and competitive hydrogen evolution reactions(HERs),which are urgent problems that need to be *** this study,a catalyst(P100-Fe-N/C)with homogeneous P-tuned FeN_(2)binuclear sites(N_(2)PFe-FePN_(2))was successfully synthesised,demonstrating satisfactory performance in the ECR to CO.P100-Fe-N/C attains a peak FECOof 98.01%and a normalized TOF of 664.7 h-1at-0.7 VRHE,surpassing the performance of the Fe binuclear catalyst without P and singleatoms *** the MEA cell,a FECOexceeding 90%can still be *** functional theory analysis indicates that the asymmetric coordination configuration induced by the incorporation of P facilitates a reduction in the system's *** modulation of P results in the d-band centre of the catalyst being positioned closer to the Fermi level,which facilitates the interaction of the catalyst with CO_(2),allowing more electrons to be injected into the CO_(2)molecule at the Fe binuclear sites and inhibiting the *** P-tuned FeN_(2)binuclear sites effectively lower the^(*)CO desorption barrier.

关键词： Electrocatalysis Diatomic catalyst Heteroatom doping CO_(2)reduction reaction DFT calculation

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Interaction of Ca^(2+)and Fe^(3+)in co-precipitation process induced by Virgibacillus dokdonensis and its application

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Journal of environmental sciences 2025年第1期147卷 131-152页

作者： Huaxiao Yan Yuping Liu Haojuan Zhang Shengping Jin Zuozhen Han Jusun Woo Maurice E.Tucker Long Meng Xiangqun Chi Chao Han Yanyang Zhao Yueming Zhao Hui Zhao College of Chemical and Biological Engineering College of Earth Science and EngineeringShandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary MineralsShandong University of Science and TechnologyQingdao 266590China Laboratory for Marine Mineral Resources Center for Isotope Geochemistry and GeochronologyQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea School of Earth Sciences University of BristolBristol BS81RJUK Cabot Institute University of BristolCantock’s CloseBristol BS81UJUK Qingdao West Coast New District First High School Qingdao 266555China

Biomineralization has garnered significant attention in the field of wastewater treatment due to its notable cost reduction compared to conventional *** reinjection water from oilfields containing an exceedingly high concentration of calcium and ferric ions will pose amajor hazard in ***,the utilization of biomineralization for precipitating these ions has been scarcely investigated due to limited tolerance among halophiles towards such extreme *** this study,free and immobilized halophiles Virgibacillus dokdonensis were used to precipitate these ions and the effects were compared,at the same time,biomineralizationmechanisms and mineral characteristicswere further *** results showthat bacterial concentration and carbonic anhydrase activitywere higher when additionally adding ferric ion based on calcium ion;the content of protein,polysaccharides,deoxyribonucleic acid and humic substances in the extracellular polymers also increased compared to *** ions were biomineralized into calcite and vaterite with mul-tiple *** to iron doping,the crystallinity and thermal stability of calcium carbonate decreased,the content of O-C=O,N-C=OandC-O-PO_(3) increased,the stable carbon isotope values became much more negative,andβ-sheet in minerals *** calcium concentrations facilitated ferric ion precipitation,while ferric ions hindered calcium *** immobilized bacteria performed better in ferric ion removal,with a precipitation ratio exceeding 90%.Free bacteria performed better in calcium removal,and the precipitation ratio reached a maximum of 56%.This research maybe provides some reference for the co-removal of calcium and ferric ions from the oilfield wastewater.

关键词： Calcium carbonate Calcium ion Ferric ion Biomineralization Co-removal Immobilization

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Integration of metabolic and evolutionary processes to construct efficient xylose-utilizing strain of Zymomonas mobilis for lignocellulosic ethanol production

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Synthetic and Systems Biotechnology 2025年第3期10卷 858-867页

作者： Lou, Jiyun Wang, Xia Li, Runxia Yao, Jun Hu, Junpeng Qin, Xianwu Jin, Mingjie Yang, Shihui State Key Laboratory of Biocatalysis and Enzyme Engineering and School of Life Sciences Hubei University Wuhan 430062 China National Key Laboratory of Agricultural Microbiology Angel Yeast Co. Ltd. Yichang 443003 China School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing 210094 China

Xylose is a major component of lignocellulose, and it is crucial to enable microorganisms the capability of efficient xylose utilization for economical lignocellulosic biochemical production. Zymomonas mobilis is a natural ethanologenic bacterium with xylose-utilizing recombinant strains engineered for commercial lignocellulosic ethanol production. However, low efficiency of xylose utilization is still the major hurdle for lignocellulosic biochemical production, especially in the lignocellulosic hydrolysate containing inhibitory compounds and mixed sugars of glucose and xylose. In this study, xylose-utilization capability of a xylose-utilizing recombinant strain 8b-S38 of Z. mobilis was further improved by evaluating the effects of different xylose metabolic pathways, xylose isomerases, and xylose transporters. The results demonstrated that xylose isomerase pathway is still the most efficient one in Z. mobilis among the xylose metabolic pathways examined, and the introduction of xylose isomerase (XI) such as StrXI and PanXI to increase its copy numbers can improve xylose utilization. In addition, the introduction of effective xylose transporter such as high-affinity xylose transporter XylFGH and the glucose facilitator mutant Glf^{A165M−K458I} promoted xylose transportation and subsequent utilization. A recombinant strain S67SPGlf^m was constructed combining rational engineering of xylose isomerases and transporters and semi-rational adaptation, which exhibited enhanced xylose utilization capability in lignocellulosic hydrolysate. This study illustrated that the construction of robust and efficient industrial strains with complex phenotypes requires a combination of different strategies such as metabolic engineering and adaptive laboratory evolution, which also provided biological parts such as xylose isomerases and xylose transporters to help design and construct microbial cell factories for efficient xylose utilization in the future. © 2025 The A

关键词： Adaptive laboratory evolution Bioethanol Biological parts Genome editing Lignocellulosic hydrolysate Xylose isomerase Xylose metabolic pathway Xylose transporter

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of BelarusMinsk 220072Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologySchool of Marine Science and EngineeringHainan UniversityHaikou 570228HainanChina Department of Chemical and Environmental Engineering University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina

Methane, an abundant one-carbon(C_(1)) resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO_(2)emissions and coke deposition. Electrochemical conversion of methane(ECM) using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO_(2)emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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Spatially confined synthesis of TiNb_(2)O_(7)quantum dots onto mesoporous carbon and Ti_(3)C_(2)T_(X)MXene for boosting lithium storage

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Green Energy & Environment 2025年第2期10卷 358-366页

作者： Daoguang Sun Cheng Tang Haitao Li Xinlin Zhang Guanjia Zhu Zhen-Dong Huang Aijun Du Haijiao Zhang Institute of Nanochemistry and Nanobiology School of Environmental and Chemical EngineeringShanghai UniversityShanghai200444China School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbaneQLD4001Australia State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing210023China

TiNb_(2)O_(7)has been emerged as one of the most promising electrode materials for high-energy lithium-ion ***,limited by the slow electron/ion transport kinetics,and insufficient active sites in the bulk structure,the TiNb_(2)O_(7)electrode still suffers from unsatisfactory lithium storage ***,we demonstrate a spatially confined strategy toward a novel TiNb_(2)O_(7)-NMC/MXene composite through a triblock copolymer-directed one-pot solvothermal route,where TiNb_(2)O_(7)quantum dots with a particle size of 2-3 nm are evenly embedded into N-doped mesoporous carbon(NMC)and Ti_(3)C_(2)T_(X)***,the as-prepared TiNb_(2)O_(7)-NMC/MXene anode exhibits a high reversible capacity(486.2 mAh g^(-1)at 0.1 A g^(-1)after 100 cycles)and long cycle lifespan(363.4 mAh g^(-1)at ss1 A g^(-1)after 500 cycles).Both experimental and theorical results further demonstrate that such a superior lithium storage performance is mainly ascribed to the synergistic effect among 0D TiNb_(2)O_(7)quantum dots,2D Ti_(3)C_(2)T_(X)MXene nanosheets,and N-doped mesoporous *** strategy presented also opens up new horizon for space-confined preparation of high-performance electrode materials.

关键词： TiNb_(2)O_(7)quantum dots Ti_(3)C_(2)T_(X)MXene Mesoporous carbon Confined synthesis Lithium-ion batteries

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A Revisit of Landsat-Observed Macroalgal Blooms in the Yellow Sea and East China Sea Before 2008

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Journal of Ocean University of China 2025年第2期24卷 525-531页

作者： YUAN Chao HUANG Juan WU Lingjuan XIAO Jie ZHANG Xuelei GAO Song LI Yifei XU Jiangling WANG Zongling Shandong Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation North China Sea Marine Forecasting and Hazard Mitigation CenterMinistry of Natural ResourcesQingdao 266061China Laboratory for Marine Ecology and Environmental Science Qingdao Marine Science and Technology CenterQingdao 266061China First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology Xi’an 710129China

Harmful macroalgal blooms caused by Ulva prolifera and Sargassum horneri are increasing in the Yellow Sea and East China ***,our understanding of macroalgal blooms before 2008 is fragmented and *** time-series Landsat imagery from 1984 to 2008,we examined macroalgal bloom events and their evolutionary *** results suggest that no macroalgal blooms were observed before *** blooms could be traced back to 1999 and occurred on a small scale in 2000,2004 and 2005,before escalating into large green tides in 2007 and ***,these Ulva blooms were confined to the southern Yellow Sea from May to *** comparison,Sargassum blooms were first detected in the East China Sea in March 2000 and occurred almost every year thereafter,although the size of the blooms showed significant interannual *** distribution areas generally moved northwards from March until the bloom dissipated in May or June,suggesting the influence of the monsoon and *** investigation provided some insight into the bloom history of these two harmful macroalgal blooms in the Yellow Sea and East China Sea.

关键词： macroalgal bloom green tide golden tide remote sensing Landsat Yellow Sea East China Sea

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Aerosol spatiotemporal dynamics,source analysis and influence mechanisms over typical drylands

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Geoscience Frontiers 2025年第1期16卷 107-121页

作者： Yunfei Zhang Xiangyue Chen Fengtao Zhao Qianrou Xia Hanchen Xing Mengdi Du Xinjiang Academy of Environmental Protection Sciences Urumqi 830011China Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning Urumqi 830011China Xinjiang Engineering Technology Research Center for Cleaner Production Urumqi 830011China National Comprehensive Monitoring Station for Ecological Quality(Xinjiang Junggar Station) Urumqi 830011China School of Earth Sciences and Spatial Information Engineering Hunan University of Science and TechnologyXiangtan 411201China Xinjiang Meteorological Information Center Urumqi 830002China

As globally important dust source areas,drylands not only have extremely fragile ecosystems that are exceptionally sensitive to global climate change but also have important implications for global warming and carbon ***,the detailed dryland aerosol characteristics are not clear,especially the influence mechanisms of dryland aerosols,which are poorly *** this paper,Utilizing the Xinjiang Uygur Autonomous Region(XJ)as a target area,based on high spatial resolution aerosol optical depth(AOD)data,combined with the trend analysis,backward trajectory,source analysis,and machine learning methods,we systematically analyzed the multiscale dynamic characteristics of aerosols in XJ over a long ***,we also quantitatively explored the source distributions of high aerosols at typical sites at different time ***,we discussed the specific effects of natural and anthropogenic factors on aerosols in XJ and its *** results show that 72.45%of the AOD in XJ presents an increasing trend from 2000 to 2019,27.56%of which passed the significance test,mainly concentrated in northern Xinjiang(NXJ).The AOD in southern Xinjiang(SXJ)is the largest(0.240±0.154),followed by eastern Xinjiang(EXJ)(0.157±0.038),and the AOD in NXJ is the smallest(0.134±0.028);however,the AOD in NXJ has the most obvious increasing trend,peaking in 2011,and the AOD in XJ remains low and stable at 5000 m elevation and *** backward trajectory shows that nearly half of the potential paths of high AOD in SXJ are from the Taklamakan Desert,most of the potential paths in NXJ are from transboundary transmission,mostly through exposed lake beds,and most of the potential paths in EXJ are from the northwest,with characteristics similar to those of *** exposed lake beds provide salt dust,which further exacerbates the complexity and hazards of aerosols in NXJ and *** potential source areas for AOD in SXJ are concentrated in the northeast of the target

关键词： Aerosol optical depth Spatiotemporal patterns Backward trajectory Potential pollution source Natural and anthropogenic influences Xinjiang

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Zero Watermarking Algorithm for Hyperspectral Remote Sensing Images Considering Spectral and Spatial Features

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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2025年 18卷 10882-10895页

作者： Yang, Bingbing Yan, Haowen Zhang, Liming Yan, Qingbo Hou, Zhaoyang Wang, Xiaolong Xu, Xinyu Lanzhou Jiaotong University Faculty of Geomatics Lanzhou730070 China National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring Lanzhou730070 China Gansu Provincial Key Laboratory of Science and Technology in Surveying & Mapping Lanzhou730070 China Lanzhou University College of Earth and Environmental Sciences Lanzhou730000 China Chinese Academy of Sciences National Glacial Permafrost Desert Science Data Centre Northwest Institute of Ecology and Environmental Resources Lanzhou730000 China

Most existing zero-watermarking algorithms for remote sensing images are designed for panchromatic or multispectral data. When applied to hyperspectral data, these methods fail to fully utilize the unique characteristics of hyperspectral images, resulting in poor robustness. This study proposes a novel zero-watermarking method specifically tailored for hyperspectral remote sensing images, leveraging both spectral and spatial features. First, principal component analysis is applied to reduce the dimensionality of the hyperspectral image, and the leading principal component is used for K-means clustering. The frequency of each category is calculated based on the clustering results, and the category frequency vector is used as the spectral feature vector. Simultaneously, Zernike moments are employed to extract spatial features, generating the spatial feature vector. These spectral and spatial feature vectors are combined to form the carrier image feature vector. Next, the watermark image is scrambled using Zigzag scanning and binarized. The mixed linear-nonlinear coupled map lattice chaotic system generates a random sequence, which is XORed with the binarized watermark sequence to produce the final binary watermark sequence. Finally, the carrier image feature vector and the binary watermark sequence are XORed to generate the zero watermark. The experimental results show that under the common attacks such as geometric attack, noise attack, filtering attack, and combination attack, the normalized correlation (NC) values of the proposed algorithm are high, all above 0.9, the values of BER are low, and the NC values of fusing spectral and spatial features are higher than that of extracting only spectral or spatial features. These results show that the proposed method effectively exploits the data characteristics of hyperspectral remote sensing images, is robust to various attacks, does not cause loss of accuracy, and is suitable for copyright protection of hyperspectral re

关键词： K-means clustering

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