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Single-atom Pd confined in Ti_(3)C_(2) nanosheet for boosted room-temperature trace NO_(2) monitoring

Nano Research 2025年第4期18卷 267-275页

作者： Yang Cai Jinlong Xiong Yuwei Wang Hafiz Muhammad Adeel Sharif Jiahao Cai Ting Pan Xueren Tan Zhuo Li Changping Li Research Center for Eco-Environmental Engineering Dongguan University of TechnologyDongguan 523808China

Two-dimensional MXenes have great potential for gas sensing applications due to their distinct electronic structure and unique surface ***,low sensitivity and poor selectivity to target gas at room temperature are major shortcomings of MXene *** this study,PdCl_(2) was used to decorate Pd single atoms(PdSA)on Ti_(3)C_(2) nanosheet(Ti_(3)C_(2)/PdSA).The Pd^(2+)was directly reduced(in-situ)into a PdSA due to abundant Ti vacancies and the inherent reducing ability of Ti_(3)C_(2) *** Ti_(3)C_(2)/PdSA sensor exhibited the highest response of 0.289 to 1 ppm NO_(2),which is 28.9 and 7.8 times higher over pristine Ti_(3)C_(2) and Pd nanoparticles(Pdnano)-decorated on Ti_(3)C_(2)(Ti_(3)C_(2)/Pdnano),***,the Ti_(3)C_(2)/PdSA sensor possessed an ultralow detection limit(10 ppb)and excellent selectivity towards NO_(2).The enhanced gas sensing mechanism of Ti_(3)C_(2)/PdSA was investigated in detail through the activation energy calculation,in-situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS),and density functional theory(DFT)*** rich active sites,chemical sensitization effect,and NO_(2) adsorption enhancement resulting from the Pd single atoms in Ti_(3)C_(2)/PdSA significantly boosted sensing *** work can provide new insights and guidelines for fabricating highly effective NO_(2) sensors operated at room temperature.

关键词： NO_(2)sensor Pd single atom Ti_(3)C_(2)MXene sensing mechanism in-situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS)

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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

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Integrating Cu^(+)/Cu^(0)sites on porous nitrogen-doped carbon nanofibers for stable and efficient CO_(2)electroreduction to multicarbon products

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Journal of Energy Chemistry 2025年第2期101卷 453-462,I0010页

作者： Yicheng Chao Jiahao Zhang Qinyue Wu Xinfei Fan Xie Quan Yanming Liu Key Laboratory of Industrial Ecology and Environmental Engineering(MOE) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024LiaoningChina College of Environmental Science and Engineering Dalian Maritime UniversityDalian 116026LiaoningChina Frontier Science Center for Smart Materials Dalian University of TechnologyDalian 116024LiaoningChina

The Cu^(+)/Cu^(0)sites of copper-based catalysts are crucial for enhancing the production of multicarbon(C_(2+))products from electrochemical CO_(2)reduction reaction(eCO_(2)RR).However,the unstable Cu^(+)and insufficient Cu^(+)/Cu^(0)active sites lead to their limited selectivity and stability for C_(2+)***,we embedded copper oxide(CuO_(x))particles into porous nitrogen-doped carbon nanofibers(CuO_(x)@PCNF)by pyrolysis of the electrospun fiber film containing ZIF-8 and Cu_(2)O *** porous nitrogendoped carbon nanofibers protected and dispersed Cu^(+)species,and its micro porous structure enhanced the interaction between CuO_(x)and reactants during eCO_(2)*** obtained CuO_(x)@PCNF created more effective and stable Cu^(+)/Cu^(0)active *** showed a high Faradaic efficiency of 62.5%for C_(2+)products in Hcell,which was 2 times higher than that of bare CuO_(x)(~31.1%).Furthermore,it achieved a maximum Faradaic efficiency of 80.7%for C_(2+)products in flow *** situ characterization and density functional theory(DFT)calculation confirmed that the N-doped carbon layer protected Cu^(+)from electrochemical reduction and lowered the energy barrier for the dimerization of^(*)*** and exposed Cu^(+)/Cu^(0)active sites enhanced the enrichment of^(*)CO and promoted the C-C coupling reaction on the catalyst surface,which facilitated the formation of C_(2+)products.

关键词： Electrocatalytic CO_(2)reduction Cu^(+)/Cu^(0)sites Multicarbon products C-C coupling Carbon nanofibers

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Market analysis and trends for products deriving from the biochemical and thermal treatment of multi-dispersed agricultural residues

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Frontiers of Chemical Science and engineering 2025年第2期19卷 55-74页

作者： Vasiliki P.Aravani Shiya Wang Wen Wang Vagelis G.Papadakis Department of Civil Engineering University of PatrasPatras 26504Greece Biomass Energy and Environmental Engineering Research Center Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Rapid population growth, economic development, resource constraints and various geopolitical problems, as well as intensifying environmental issues are leading to a worsening energy crisis. Oil, natural gas and coal are still the main sources of primary energy. Biofuels, such as biochar, bio-oil, biogas, and hydrogen, are one of the most significant renewable and sustainable energy sources. Their use can reduce net greenhouse gas emissions as well as dependence on imported fossil fuels, in response to the above, while the production and exploitation of biomass mainly from agricultural residues can also create jobs in rural and depopulated areas. In this study, a market analysis for biochar, bio-oil, biogas, and hydrogen was conducted worldwide intending to provide detailed information for the economic viability of sustainable agricultural systems and to specify the prospects for an economically viable introduction of each of the bio-products into the energy market. The results revealed that indeed these biofuels are one of the most significant and energy sources offering sustainability by reducing gas emissions into the atmosphere but also by managing residual biomass, thus contributing to waste management. A rapid acceleration is expected in the next years followed by price reduction.

关键词： biochar biofuels biogas bio-oil hydrogen market analysis

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Facile fabrication of NiCo-hydroxysulfide nanosheets array for electrocatalytic urea oxidation

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Science China(Technological Sciences) 2025年第1期68卷 218-228页

作者： Jing ZOU Chang LIU Kun XIANG Qiong LI Shihao DAI Jizhou JIANG School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China

Urea oxidation reaction(UOR)instead of anodic oxygen evolution reaction(OER)is considered an effective way to reduce energy consumption in electrocatalytic water splitting for hydrogen ***,the slow rate of reaction of UOR,which entails a procedure of transferring six electrons,has hindered its widespread ***,it is crucial to design highly effective electrocatalysts for the implementation of ***,a novel NiCo-hydroxysulfide(NiCo-HOS)electrocatalyst has been reported for UOR,which is obtained by the exchange of sulfur ions in NiCo layered double hydroxide(NiCo-LDH)nanosheets at room *** from the sulfurization process,the composition,electronic structure,and surface properties of electrocatalysts have undergone significant changes and *** sulfurization treatment,the resulting NiCo-HOS showed enhanced chemical resistance to alkaline electrolytes and improved electrical *** a 40 h operation test,it maintained high stability and provided a stable current density of 100 mA cm^(-2)at a relatively low potential of 1.33 V(***)in a solution of 1 mol L^(-1)KOH+0.5 mol L^(-1)***,the anode electrolytic product is analyzed through gas chromatography(GC),and N_2 is detected as the product without the presence of CO,indicating that the urea has undergone complete oxidation.

关键词： urea oxidation reaction NiCo-hydroxysulfide electrocatalyst hydrogen

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Operando investigation of particle re-entrainment mechanism in electrostatic capture process on the lab-on-a-chip

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Journal of environmental Sciences 2024年第2期136卷 337-347页

作者： Yong Zhu Yikun Zhang Xiaoyong Yang Shanlong Tao Mingxia Chen Wenfeng Shangguan Research Center for Combustion and Environmental Technology School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Inhalable particle is a harmful air pollutant that causes a significant threat to people's health and ecological environments,which should be removed to purify air,but there exists limited removal efficiency due to particle ***,Operando observation system based on microscopic visualization method is developed to make in situ test of particle migration,deposition and re-entrainment characteristics on a lab-on-a-chip to achieve the investigation in micro-level *** deposition evolution of charged particles is recorded in electric field region intuitively,which confirms the fracture of particle chain occurs during the growth process of deposited *** captures the instantaneous process that a larger particle with micron size due to the coagulation of submicron particles fractures from main body of the particle chain for the first *** analysis of migration behavior of a single submicron particle near electrode surface demonstrates the direct influence of drag force on the fracture of particle *** work is the first-time visualization of dynamic process and mechanism elucidation of particle re-entrainment at the micron level,and the findings will provide the theory support for the particle re-entrainment mechanism and bring inspires of enhancing capture efficiency of inhalable particle.

关键词： Inhalable particle Re-entrainment mechanism Operando observation Lab-on-a-chip Capture efficiency

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N-doped activated carbon promoting sulfur-containing VOC removal in three-dimension electrode system

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Frontiers of environmental Science & engineering 2025年第5期19卷 205-218页

作者： Rui Luo Shugen Liu Senlin Tian Chen Li Ping Ning Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China National Regional Engineering Research Center-NCW Kunming 650500China

N-doped activated carbon(AC)was employed in a three-dimensional electrode system(3DES)to enhance the removal of sulfur-containing volatile organic compounds(S-VOC).The technical parameters for preparing N-doped AC were optimized based on CS_(2)removal and COS accumulation,where the mass ratio of AC to urea was 1:1.0,and the activation temperature and heat-treatment time were 400℃and 120 min,*** the mixing S-VOC were purified under an operating voltage of 8 V and peroxydisulfate concentration of 0.15 mol/L,CS_(2)removal in the 3DES system with N-doped AC reached 100%within 75 min,and was above 83%as purification time extended to 200 ***,the COS content in the outlet gas was usually undetectable within 120 min,and was lower than that in the other electrochemical *** of raw AC through urea impregnation and subsequent heat treatment significantly improved its surface structure and pore size ***,polar functional groups,such as C=O and pyridinic-N,increased noticeably,enhancing the SVOC adsorption capacity and dielectric ***,highly reactive substances were more efficiently activated in 3DES system with N-doped AC,and oxidizing species HO·and^(1)O_(2)had important contributions to S-VOC purification compared to SO_(4)^(-)·radicals.A pathway was proposed to elucidate the transformation of sulfur-containing components,such as CH3SH and CS_(2).This study provides an efficient approach for S-VOC purification.

关键词： N-doped activated carbon Sulfur-containing VOC Three-dimensional electrode system Electrochemical oxidation

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Feasibility of low-intensity ultrasound treatment with hydroxylamine to accelerate the initiation of partial nitrification and allow operation under intermittent aeration

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Journal of environmental Sciences 2024年第5期139卷 446-459页

作者： Jianxiong Jian Xiaojian Liao Zhihua Mo Shoupeng Li Lei Li Shaojin Chen Zhenhua Huang Junhao Chen Wencan Dai Shuiyu Sun Guangzhou Key Laboratory Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Guangdong Province Solid Waste Recycling and Heavy Metal Pollution Control Engineering Technology Research Center Guangdong Polytechnic of Environmental Protection EngineeringFoshan 528216China Analysis and Test Center Guangdong University of TechnologyGuangzhou 510006China

Partial nitrification is a key aspect of efficient nitrogen removal,although practically it suf-fers from long start-up cycles and unstable long-term operational *** address these drawbacks,this study investigated the effect of low intensity ultrasound treatment combined with hydroxylamine(NH2OH)on the performance of partial *** showthat compared with the control group,low-intensity ultrasound treatment(0.10W/mL,15 min)combined with NH2OH(5 mg/L)reduced the time required for partial nitrification initiation by 6 days,increasing the nitrite accumulation rate(NAR)and ammonia nitro-gen removal rate(NRR)by 20.4% and 6.7%,respectively,achieving 96.48% ***-tic analysis showed that NH2OH enhanced ammonia oxidation,inhibited nitrite-oxidizing bacteria(NOB)activity and shortened the time required for partial nitrification ***,ultrasonication combined with NH2OH dosing stimulated EPS(extracellular polymeric substances)secretion,increased carbonyl,hydroxyl and amine functional group abundances and enhanced mass *** addition,16S rRNA gene sequencing results showed that ultrasonication-sensitive Nitrospira disappeared from the ultrasound+NH_(2)OH system,while Nitrosomonas gradually became the dominant ***,the results of this study provide valuable insight into the enhancement of partial nitrification start-up during the process of wastewater nitrogen removal.

关键词： Partial nitrification Low-intensity ultrasound Hydroxylamine Ammonia oxidizing bacteria Nitrite oxidizing bacteria

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Occurrence and risks of pharmaceuticals,personal care products,and endocrine-disrupting compounds in Chinese surface waters

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Journal of environmental Sciences 2024年第12期146卷 251-263页

作者： Yuhang Chen Mengyuan Li Weichun Gao Yinyan Guan Zhineng Hao Jingfu Liu State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China College of Environmental Science and Engineering China West Normal UniversityNanchong 637009China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

The continuous and rapid increase of chemical pollution in surface waters has become a pressing and widely recognized global *** emerging contaminants(ECs)in surface waters,pharmaceutical and personal care products(PPCPs),and endocrine-disrupting compounds(EDCs)have attracted considerable attention due to their wide occurrence and potential threat to human ***,a comprehensive understanding of the occurrence and risks of ECs in Chinese surface waters is urgently *** study summarizes and assesses the environmental occurrence concentrations and ecological risks of 42 pharmaceuticals,15 personal care products(PCPs),and 20 EDCs frequently detected in Chinese surface *** ECs were primarily detected in China’s densely populated and highly industrialized *** detected PPCPs and EDCs had concentrations between ng/L toμg/L,whereas norfloxacin,caffeine,and erythromycin had relatively high contamination levels,even exceeding 2000 ng/*** evaluation based on the risk quotient method revealed that 34 PPCPs and EDCs in Chinese surface waters did not pose a significant risk,whereas 4-nonylphenol,4-tert-octylphenol,17α-ethinyl estradiol,17β-estradiol,and triclocarban *** review provides a comprehensive summary of the occurrence and associated hazards of typical PPCPs and EDCs in Chinese surface waters over the past decade,and will aid in the regulation and control of these ECs in Chinese surface waters。

关键词： Pharmaceuticals and personal care products(PPCPs) Endocrine-disrupting compounds (EDCs) Surface waters Occurrence Risk assessment Prioritization

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Strategically designing and fabricating nitrogen and sulfur Co-doped g-C3N4 for accelerating photocatalytic H2 evolution

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材料科学技术（英文版） 2025年第5期208卷 111-119页

作者： Haitao Wang Lianglang Yu Jiahe Peng Jing Zou Jizhou Jiang School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

Doping engineering is an effective strategy for graphitic carbon nitride(g-C3N4)to improve its photocat-alytic hydrogen evolution reaction(HER)*** this work,a novel nitrogen and sulfur co-doped g-C3N4(N,S-g-C3N4)is elaborately designed on the basis of theoretical predictions of first-principle density functional theory(DFT).The calculated Gibbs free energy of adsorbed hydrogen(ΔGH·)for N,S-g-C3N4 at the N-doping active sites is extremely close to zero(0.01 eV).Inspired by the theoretical predictions,the N,S-g-C3N4 is successfully fabricated through ammonia-rich pyrolysis synthesis strategy,in which ammonia is in-situ obtained by pyrolyzing *** characterizations indicate that the N,S-g-C3N4 possesses high specific surface area,outstanding light utilization,good hydrophilicity,and efficient carrier transfer ***,the N,S-g-C3N4 displays an extremely high H2 evolution rate of 8269.9 μmol g-1 h-1,achieves an apparent quantum efficiency(AQE)of 3.24％,and also possesses outsatnding *** calculations further demonstrate that N and S dopants can not only introduce doping energy level to reduce the band gap,but also induce charge redistribution to facilitate hydrogen adsorption,thus promoting the photocatalytic HER ***,femtosecond transient absorption(fs-TA)spectroscopy further corroborates the efficient photogenerated carrier transport of N,*** research highlights a promising and reliable strategy to achieve superior photocatalytic activity,and exhibits significant guidance for precise designing high-efficiency photocatalysts.

关键词： Theoretical predictions g-C3N4 N and S co-doping Photocatalytic H2 evolution

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