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Journal of Environmental Sciences 2025年第3期149卷 386-393页

作者： Huawei Yi Yangyang Cui Lijun Zhu Yan Shen Han Li Guanghan Huang Linzhen Qu Dongdong Guo Lei Nie Yifeng Xue National engineering research center of Urban Environmental Pollution Control Beijing Municipal Research Institute of Eco-Environmental ProtectionBeijing 100037China beijing Vehicle Emission Management Affairs Centre Beijing 100176China

To understand the smoke level and NO_(x)emission characteristics of in-use construction machinery in beijing,we selected 905 construction machines in beijing from August 2022 to April 2023 to monitor the emission level of smoke and NO_(x).The exhaust smoke level and excessive emission situation of different machinery types were identified,and their NO_(x)emission levels were monitored according to the free acceleration *** investigated the correlation of NO_(x)and smoke emission,and proposed suggestions for controlling pollution discharge from construction machinery in the *** results show that the exhaust smoke level was 0–2.62 m^(−1),followed a log-normal distribution(μ=-1.73,δ=1.09,R^(2)=0.99),with a 5.64%exceedance *** observed amongmachinery types,with low-power engine forklifts showing higher smoke *** NO_(x)emission range was 71–1516 ppm,followed a normal distribution(μ=565.54,δ=309.51,R^(2)=0.83).Differences among machinery types were relatively *** rated net power had the most significant impact on NO_(x)***,NO_(x)emissions from construction machinery need further ***,we found a weak negative correlation(pbeijing should prioritize phasing out ChinaⅠand ChinaⅡmachinery,and monitor emissions from highpower engine ChinaⅢmachinery.

关键词： Fuel-oil construction machinery Smoke NO_(x) Emission level Regulatory suggestion

Bioenergy recovery and carbon emissions benefits of short-term bio-thermophilic pretreatment on low organic sewage sludge anaerobic digestion:A pilot-scale study

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Journal of Environmental Sciences 2025年第2期148卷 321-335页

作者： Hui Wang Xiang Fu Haozhe Huang Danni Shen Dongdong Fan Liming Zhu Xiaohu Dai Bin Dong College of Environmental Science and engineering Tongji UniversityShanghai 200092China Yangtze eco-Environment engineering research center China Three Gorges CorporationBeijing 100038China Yangtze River eco-Environmental engineering research center Shanghai InvestigationDesign and Research Institute Co.LTDShanghai 200092China China Construction Third engineering Bureau First engineering Co. Ltd.Wuhan 430000China

Sewage sludge in cities of Yangzi River Belt,China,generally exhibits a lower organic content and higher silt contentdue to leakage of drainage system,which caused low bioenergy recovery and carbon emission benefits in conventional anaerobic digestion(CAD).Therefore,this paper is on a pilot scale,a bio-thermophilic pretreatment anaerobic digestion(BTPAD)for low organic sludge(volatile solids(VS)of 4%)was operated with a long-term continuous flow of 200 *** VS degradation rate and CH_(4) yield of BTPAD increased by 19.93%and 53.33%,respectively,compared to those of *** analysis of organic compositions in sludge revealed that BTPAD mainly improved the hydrolysis of proteins in *** analysis of microbial community proportions by high-throughput sequencing revealed that the short-term bio-thermophilic pretreatment was enriched in Clostridiales,Coprothermobacter and Gelria,was capable of hydrolyzing acidified proteins,and provided more volatile fatty acid(VFA)for the subsequent *** combined with fluorescence quantitative polymerase chain reaction(PCR)analysis showed that the number of bacteria with high methanogenic capacity in BTPAD was much higher than that in CAD during the medium temperature digestion stage,indicating that short-term bio-thermophilic pretreatment could provide better methanogenic conditions for ***,the greenhouse gas emission footprint analysis showed that short-term bio-thermophilic pretreatment could reduce the carbon emission of sludge anaerobic digestion system by 19.18%.

关键词： Sludge Anaerobic digestion Bio-thermophilic pretreatment Pilot scale Molecular microbiology Carbon emissions

Protonated carbon nitride for rapid photocatalytic sterilization via synergistic oxidative damage and physical destruction

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Journal of Environmental Sciences 2025年第3期149卷 188-199页

作者： Xiaobiao Zhu Chunhong Xu Jie Mao Yizhen Zhang Yaohui Bai Department of Environmental Science and engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China research center for eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China College of Safety and Environmental engineering Shandong University of Science and TechnologyQingdao 266590China

Photocatalytic disinfection is an eco-friendly strategy for countering bacterial pollution in aquatic *** strategies have been devised to facilitate the generation of reactive oxygen species(ROS)within photocatalysts,ultimately leading to the eradication of ***,the significance of the physical morphology of photocatalysts in the context of sterilization is frequently obscured,and the progress in the development of physical-chemical synergistic sterilization photocatalysts has been relatively ***,graphitic carbon nitride(g-C_(3)N_(4))is chemically protonated to expose more sharp *** fluorescence and EIS results indicate that the protonation can accelerate photogenerated carrier separation and enhance ROS ***,the sharp edges on the protonated g-C_(3)N_(4)facilitate the physical disruption of cell walls for further promoting oxidative *** C_(3)N_(4)demonstrated superior bactericidal performance than that of pristine g-C_(3)N_(4),effectively eliminating Escherichia coli within 40 minutes under *** work highlights the significance of incorporating physical and chemical synergies in photocatalyst design to enhance the disinfection efficiency of photocatalysis.

关键词： Protonated Photocatalytic Sterilization Synergistic Oxidative Damage Physical Destruction

Taming of trinitromethyl-oxadiazole to access high density and high oxygen balance via a dual modulation strategy

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Defence Technology(防务技术) 2025年第1期43卷 142-149页

作者： Jinya Zhang Teng Fei Jingwei Meng Jinxiong Cai Lei Zhang Siping Pang Chunlin He School of materials Science&engineering Beijing Institute of TechnologyBeijing 100081China Experimental center of Advanced materials School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China hongqing Innovation center Beijing Institute of TechnologyChongqing 401120China

Energetic compounds bearing the trinitromethyl group are garnering broad attraction as potential candidates for a new generation of high energy dense *** this work,an effective dual modulation strategy involving both molecular isomerization and crystal morphology control was employed to design and optimize trinitromethyl-oxadiazole with improved comprehensive *** this dual strategy,3,5-bis(trinitromethyl)-1,2,4-oxadiazole(3)was synthesized,resulting in the formation of two distinct crystal morphologies(needle and sheet)corresponding to two crystal forms(3-a and3-b).Encouragingly,while maintaining ultra-high oxygen balance(21.73%),3 achieves impressive densities(1.97-1.98 g/cm^(3)).To our knowledge,the density of 1.98 g/cm^(3)for 3-a sets a new record among that of nitrogen-rich monocyclic ***,practical crystal morphology prediction was creatively introduced to guide the experimental crystallization conditions of 3,increasing the impact sensitivity and friction sensitivity from 1 J to 80 N(3-a)to 10 J and 240 N(3-b),***,the crystal structural analyses and theoretical calculations were conducted to elucidate the reasons of differences between 3-a and 3-b in density and *** work provides an efficient strategy to enhance performance of trinitromethyl derivatives,broadening the path and expanding the toolbox for energetic materials.

关键词： Energetic materials High oxygen balance High density Dual modulation Trinitromethyl group

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Magnetically-responsive phase change thermal storage materials:Mechanisms,advances,and beyond

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Journal of Energy Chemistry 2025年第2期101卷 485-510页

作者： Yan Gao Yang Li Jinjie Lin Panpan Liu Xiao Chen Ge Wang beijing Advanced Innovation center for materials Genome engineering Beijing Key Laboratory of Function Materials for Molecule & Structure Construction School of Materials Science and Engineering University of Science and Technology Beijing School of Physics and Astronomy Beijing Normal University Shunde Graduate School University of Science and Technology Beijing

Rapid advances in thermal management technology and the increasing need for multi-energy conversion have placed stringent energy efficiency requirements on next-generation shape-stable composite phase change materials(PCMs).Magnetically-responsive phase change thermal storage materials are considered an emerging concept for energy storage systems,enabling PCMs to perform unprecedented functions(such as green energy utilization,magnetic thermotherapy,drug release,etc.).The combination of multifunctional magnetic nanomaterials and PCMs is a milestone in the creation of advanced multifunctional composite ***,a timely and comprehensive review of composite PCMs based on magnetic nanoparticle modification is still ***,we furnish an exhaustive exposition elucidating the cutting-edge advancements in magnetically responsive composite *** delve deeply into the multifarious roles assumed by distinct nanoparticles within composite PCMs of varying dimensions,meticulously scrutinizing the intricate interplay between their architectures and thermophysical ***,we prognosticate future research trajectories,delineate alternative stratagems,and illuminate prospective *** review is intended to stimulate broader academic interest in interdisciplinary fields and provide valuable insights into the development of next-generation magnetically-responsive composite PCMs.

关键词： Magnetic nanoparticles Magnetic-thermal conversion Phase change materials Response mechanism Thermal energy storage

Emerging trends in the selective production of value-added aromatics

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Science China Chemistry 2025年第1期68卷 15-20页

作者： Yuchao Wu Houliang Dai Weisheng Yang Yaxing Li Lichen Liu Petrochemical research Institute Company Limited China National Petroleum CorporationBeijing 102206China engineering research center of Advanced Rare Earth materials Department of ChemistryTsinghua UniversityBeijing 100084China

1 Introduction Aromatics(mainly benzene,toluene,and xylenes,BTX)are essential intermediates in the chemical *** are employed in the synthesis of a broad spectrum of chemicals and materials,e.g.,various polymers,plastics,resins,solvents,dyes,pharmaceuticals^([1]).The manufacturing pathway of BTX mainly includes petroleum reforming of naphtha,coal-to-aromatics,methanol-to-aromatics^([2]).

关键词： reforming methanol resins

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Structure-phase transformation of bismuth oxide to Ta-Bi_(24)O_(31)Cl_(10)shoulder-by-shoulder heterojunctions for efficient photocatalytic removal of antibiotic

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Journal of Environmental Sciences 2025年第3期149卷 149-163页

作者： Man Yang Zhenzhen Shi Shaodong Sun Bian Yang Jie Cui Jianing Li Daqin Yun Nian Lei engineering research center of Conducting materials and Composite Technology Ministry of EducationShaanxi Engineering Research Center of Metal-Based Heterogeneous Materials and Advanced Manufacturing TechnologyShaanxi Province Key Laboratory for Electrical Materials and Infiltration TechnologySchool of Materials Science and EngineeringXi’an University of TechnologyXi’an 710048China College of Energy Xiamen UniversityXiamen 361005China beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Developing heterojunction photocatalyst with well-matched interfaces andmultiple charge transfer paths is vital to boost carrier separation efficiency for photocatalytic antibiotics removal,but still remains a great *** present work,a new strategy of chloride anion intercalation in Bi_(2)O_(3)via one-pot hydrothermal process is *** as-prepared Ta-BiOCl/Bi_(24)O_(31)Cl_(10)(TBB)heterojunctions are featured with Ta-Bi_(24)O_(31)Cl_(10)and Ta-BiOCl lined shoulder-by-shouleder via semi-coherent *** this TBB heterojunctions,the well-matched semi-coherent interfaces and shoulder-by-shoulder structures provide fast electron transfer andmultiple transfer paths,respectively,leading to enhanced visible light response and improved photogenerated charge ***,a type-II heterojunction for photocharge separation has been obtained,in which photogenerated electrons are drove from the CB(conduction band)of Ta-Bi_(24)O_(31)Cl_(10)to the both of bilateral empty CB of Ta-BiOCl and gathered on the CB of Ta-BiOCl,while the photogenerated holes are left on the VB(valence band)of Ta-Bi_(24)O_(31)Cl_(10),effectively hindering the recombination of photogenerated electron-hole ***,the separated electrons can effectively activate dissolved oxygen for the generation of reactive oxygen species(·O_(2)^(−)).Such TBB heterojunctions exhibit remarkably superior photocatalytic degradation activity for tetracycline hydrochloride(TCH)solution to Bi_(2)O_(3),Ta-BiOCl and Ta-Bi_(24)O_(31)Cl_(10).This work not only proposes a Ta-BiOCl/Bi_(24)O_(31)Cl_(10)shoulder-by-shoulder micro-ribbon architectures with semi-coherent interfaces and successive type-Ⅱheterojunction for highly efficient photocatalytic activity,but offers a new insight into the design of highly efficient heterojunction through phasestructure synergistic transformation strategy.

关键词： Heterojunction Bismuth oxide Charge separation/transfer Photocatalytic degradation Catalytic mechanism

Efficient remediation of different concentrations of Cr-contaminated soils by nano zero-valent iron modified with carboxymethyl cellulose and biochar

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Journal of Environmental Sciences 2025年第1期147卷 474-486页

作者： Lihong Xie Qiyan Ma Qingjun Chen Yiyang Liu Pengfei Guo Jinlan Zhang Guilan Duan Aijun Lin Tingting Zhang Shangyi Li Department of Environmental Science and engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China China National Petroleum and Chemical Planning Institute Beijing 100013China State Key Laboratory of Urban and Regional ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Nano zero-valent iron(nZVI)is widely used in soil remediation due to its high ***,the easy agglomeration,poor antioxidant ability and passivation layer of Fe-Cr coprecipitates of nZVI have limited its application scale in Cr-contaminated soil remediation,especially in high concentration of Cr-contaminated ***,we found that the carboxymethyl cellulose on nZVI particles could increase the zeta potential value of soil and change the phase of *** with the presence of biochar,97.0%and 96.6%Cr immobilization efficiency through CMC-nZVI/BC were respectively achieved in high and low concentrations of Cr-contaminated soils after 90-days *** addition,the immobilization efficiency of Cr(VI)only decreased by 5.1%through CMC-nZVI/BC treatment after 10 weeks aging in air,attributing to the strong antioxidation *** for the surrounding Crcontaminated groundwater,the Cr(VI)removal capacity of CMC-nZVI/BC was evaluated under different reaction conditions through column experiments and COMSOL ***-nZVI/BC could efficiently remove 85%of Cr(VI)in about 400 hr when the initial Cr(VI)concentration was 40 mg/L and the flow rate was 0.5 mL/*** study demonstrates that uniformly dispersed CMC-nZVI/BC has an excellent remediation effect on different concentrations of Cr-contaminated soils.

关键词： Carboxymethyl cellulose Nanoscale zero-valent iron Biochar Cr-contaminated soils

research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie Tian Qinghe Cui beijing Advanced Innovation center for materials Genome engineering University of Science and Technology BeijingBeijing 100083China beijing Laboratory of Metallic materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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Platinum modification of metallic cobalt defect sites for efficient electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第2期101卷 463-473页

作者： Haoyu Zhan Baixue Cheng Yankun Lu Danning Xing Xingshuai Lv Huining Huang Thomas Frauenheim Tao Wang Peng Zhou State Key Laboratory of Bio-fibers and eco-textiles College of Materials Science and Engineering Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials Qingdao University Shandong Institute of Advanced Technology College of Chemistry and Chemical engineering Ocean University of China Tianjin Key Laboratory of Advanced Functional Porous materials Institute for New Energy Materials & Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology School of Science Constructor University beijing Computational Science research center College of Chemistry and Molecular engineering Qingdao University of Science and Technology

Co3O4possesses both direct and indirect oxidation effects and is considered as a promising catalyst for the oxidation of 5-hydroxymethylfurfural（HMF）.However,the enrichment and activation effects of Co3O4on OH-and HMF are weak,which limits its further *** defect engineering can regulate the electronic structure,optimize the adsorption of intermediates,and improve the catalytic activity by breaking the symmetry of the material,which is rarely involved in the upgrading of *** this work,we prepare Co3O4with metal defects and load the precious metal platinum at the defect sites（PtVco）.The results of in-situ characterizatio ns,electrochemical measurements,and theoretical calculations indicate that the reduction of Co-Co coordination number and the formation of Pt-Co bond induce the decrease of electron filling in the antibonding orbitals of Co *** resulting upward shift of the d-band center of Co combined with the characteristic adsorption of Pt species synergically enhances the enrichment and activation of organic molecules and OH species,thus exhibiting excellent HMF oxidation activity(including a lower onset potential（1.14 V） and 19 times higher current density than pure Co3O4at 1.35 V).In summary,this work explores the adsorption enhancement mechanism of metal defect sites modified by precious metal in detail,provides a new option for improving the HMF oxidation activity of cobalt-based materials,broadens the application field of metal defect based materials,and gives an innovative guidance for the functional utilization of metal defect sites in biomass conversion.

关键词： Adsorption enhancement Biomass upgrading Coordination environment Electrocatalysis Metallic defect