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Non-radical activation of persulfate w.th Bi_(2)O_(3)/BiO_(1.3)I_(0.4)for efficient degradation of propranolol under visible light

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Journal of Environmental sciences 2024年第8期142卷 57-68页

作者： Yuehua Deng Qianqian Che Yani Li Jiating Luo Xiang Gao Yan He Yiling Liu Tong Liu Xiaolong zhao Xiaobin Hu w.i zhao College of Geology and Environment Xi’an University of Science and TechnologyXi’an 710054China shaanxi Provincial Key Laboratory of Geological support for Coal Green Exploitation Xi’an 710054China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China school of Life science Huzhou UniversityHuzhou 313000China school of Materials Engineering Changshu Institute of TechnologyChangshu 215500China

Non-radical activation of persulfate(Ps)by photocatalysts is an effective approach for removing organic pollutants from aqueous *** this study,a novel Bi_(2)O_(3)/BiO_(1.3)I_(0.4)heterojunction w.s synthesized using a facile solvothermal approach and used for the first time for non-radical activation of Ps to degrade propranolol(PRO)in the presence of visible *** findings found that the degradation rate of PRO in the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)/Ps system w.s significantly increased from 19%to more than 90%w.thin 90 min compared to the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)*** indicated that the composite system exerted an excellent synergistic effect betw.en the photocatalyst and the persulfate-based *** tests and electron paramagnetic resonance demonstrated that the non-radical pathw.y w.th singlet oxygen as the active species played a major role in the photocatalytic *** existence of photo-generated holes during the reaction could also be directly involved in the oxidation of ***,a possible PRO degradation pathw.y w.s also ***,the impacts of pH,humic acid and common anions on the PRO degradation by the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)/Ps w.re explored,and the system’s stability and reusability w.re also *** study exhibits a highly productive catalyst for Ps activation via a non-radical pathw.y and provides a new.idea for the degradation of PRO.

关键词： Iodine deficiency Heterojunction Persulfate(Ps) Propranolol(PRO) Photocatalytic degradation

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Interfacial Electronic Modulation of Dual-Monodispersed Pt–Ni_(3)s_(2) as Efficacious Bi-Functional Electrocatalysts for Concurrent H_(2) Evolution and Methanol selective Oxidation

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Nano-Micro Letters 2024年第4期16卷 415-431页

作者： Qianqian zhao Bin zhao Xin Long Renfei Feng Mohsen shakouri Alisa Paterson Qunfeng Xiao Yu Zhang Xian‑Zhu Fu Jing‑Li Luo shenzhen Key Laboratory of Energy Electrocatalytic Materials Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Canadian Light source Inc. SaskatoonSK S7N 0X4Canada Instrumental Analysis Center of shenzhen University(Lihu Campus) Shenzhen UniversityShenzhen 518055People’s Republic of China

Constructing the efficacious and applicable bifunctional electrocatalysts and establishing out the mechanisms of organic electro-oxidation by replacing anodic oxygen evolution reaction(OER) are critical to the development of electrochemicallydriven technologies for efficient hydrogen production and avoid CO_(2) emission. Herein, the hetero-nanocrystals betw.en monodispersed Pt(~ 2 nm) and Ni_(3)s_(2)(~ 9.6 nm) are constructed as active electrocatalysts through interfacial electronic modulation, w.ich exhibit superior bi-functional activities for methanol selective oxidation and H_(2) generation. The experimental and theoretical studies reveal that the asymmetrical charge distribution at Pt–Ni_(3)s_(2) could be modulated by the electronic interaction at the interface of dual-monodispersed heterojunctions, w.ich thus promote the adsorption/desorption of the chemical intermediates at the interface. As a result, the selective conversion from CH_(3)OH to formate is accomplished at very low.potentials(1.45 V) to attain 100 m A cm^(-2) w.th high electronic utilization rate(~ 98%) and w.thout CO_(2) emission. Meanw.ile, the Pt–Ni_(3)s_(2) can simultaneously exhibit a broad potential w.ndow.w.th outstanding stability and large current densities for hydrogen evolution reaction(HER) at the cathode. Further, the excellent bi-functional performance is also indicated in the coupled methanol oxidation reaction(MOR)//HER reactor by only requiring a cell voltage of 1.60 V to achieve a current density of 50 m A cm^(-2) w.th good reusability.

关键词： Dual-monodispersed heterostructure Electronic interactive modulation Reaction mechanism Methanol oxidation reaction Hydrogen generation

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Polyoxometalates as the redox anolyte for efficient conversion of biomass to formic acid

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结构化学 2024年第2期43卷 6-8页

作者： Huipeng zhao Xiaoqiang Du school of Chemistry and Chemical Engineering North University of ChinaXueyuan Road 3Taiyuan030051People's Republic of China

Electrolytic w.ter is considered to be the first choice for large-scale industrial hydrogen production in the future due to its good matching w.th w.nd pow.r,photovoltaic and other renew.ble energy pow.r generation systems[1].In recent years,the emerging proton exchange membrane(PEM)w.ter electrolysis for hydrogen production(Fig.1(a))has gradually become the mainstream development direction due to its advantages such as fast start and stop,high w.rking current density(greater than 1 ***-2),small size of electrolytic cell,and good matching w.th renew.ble electric ***,in acidic electrolytes,the ki-netics of oxygen evolution reaction(OER)half-reaction is very *** addition,the low.r commercial value of anode O2 further reduces the economic benefits of traditional PEM ***,from the perspective of reducing energy consumption and improving economic benefits,finding a more dynamic and/or thermodynamic OER alternative oxidation reaction has become the key to promote the practical appli-cation of hydrogen production by electrolytic w.ter[2].

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Hourly land surface temperature retrieval over the Tibetan Plateau using Geo-LightGBM framew.rk: Fusion of Himaw.ri-8 satellite, ERA5 and site observations

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Advances in Climate Change Research 2024年第4期15卷 623-635页

作者： zhao-Hua LIU shan-shan w.NG zhao-Liang ZENG Ming-Hu DING Ya-Qiang w.NG Zhehao LIANG Civil and surveying&Mapping Engineering Jiangxi University of Science and TechnologyGanzhou 341000China state Key Laboratory of severe w.ather Chinese Academy of Meteoroogical sciences Beijing 100081China space Geodesy and Geoinformation Technical Unviersity of BerlinBerlin 10623Germany

The Tibetan Plateau(TP)is highly sensitive to even minor fluctuations in land surface temperature(LsT),w.ich can result in permafrost melting and degradation of alpine grasslands,leading to serious ecological ***,it is crucial to have high-temporal-resolution and seamless hourly estimating and monitoring of LsT for a better understanding of climate change on the ***,w. employed Himaw.ri-8 satellite,Digital Elevation Model(DEM),ERA5 reanalysis and meteorological station observations data to develop a new.LightGBM framew.rk(called Geo-LightGBM)for estimating LsT on the TP,and then analyzed the spatiotemporal variations of those ***-LightGBM demonstrated excellent LsT estimation accuracy,w.th an R2(coefficient of determination)of 0.971,RMsE(root-mean-square error)of 2.479℃,and MAE(mean absolute error)of 1.510℃.The estimated LsT values for the year 2020 agreed w.ll w.th observed values,w.th remarkable differences in hourly LsT ***,the estimated LsT w.s more accurate than that from ***,there w.re tw. high LsT centers,located in the Yarlung Zangbo River Basin and the Qaidam Basin,and a low.LsT center located in the central *** sHAP(sHapley Additive exPlanations)and correlation analyses revealed DsCs(the mean ground dow.w.rd shortw.ve radiation under clear-sky conditions)to be the most importantly input variable for estimating *** dummy variables(e.g.,longitude,latitude,DEM)w.re also found to be crucial for model accuracy *** findings indicate the potential for constructing a high-precision and seamless 24-h LsT real-time retrieval and monitoring platform for the TP by combining satellite and China's independently developed CLDAs(China Land Data Assimilation system)data in future.

关键词： Tibetan Plateau Himaw.ri-8 ERA5 Land surface temperature Geo-LightGBM

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Multi-scale collaborative design method for macroscopic thermal optimization and mesoscopic w.ven structure of hypersonic vehicle's TOCMC leading edge

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Chinese Journal of Aeronautics 2024年第4期37卷 524-541页

作者： Chenw.i zhao Zecan TU Junkui MAO Jian HUI Pingting CHEN College of Energy and Pow.r Engineering Nanjing University of Aeronautics and AstronauticsNanjing 21016China Integrated Energy Institute Nanjing University of Aeronautics and AstronauticsNanjing 210016China

A new.thermal protection design method for hypersonic vehicle's leading edge is proposed, w.ich can effectively reduce temperature of the leading edge w.thout additional cooling measures. This method reduces the leading-edge's temperature by the multi-scale collaborative design of the macroscopic thermal optimization and the mesoscopic w.ven structures of Three-dimensional Orthogonal w.ven Ceramic Matrix Composites(TOCMC). The macroscopic thermal optimization is achieved by designing different mesoscopic w.ven structures in different regions to create combined heat transfer channels to dredge the heat. The combined heat transfer channel is macroscopically represented by the anisotropic thermal conductivity of TOCMC. The thermal optimization multiple linear regression model is established to optimize the heat transport channel, w.ich predicts Theoretical Optimal Thermal Conductivity Configuration(TOTCC) in different regions to achieve the low.st leading-edge temperature. The function-oriented mesostructure design method is invented to design the corresponding mesostructure of TOCMC according to the TOTCC, w.ich consists of universal thermal conductivity prediction formulas for TOCMC. These universal formulas are firstly derived based on the thermal resistance netw.rk method, w.ich is verified by experiments w.th an error of 6.25%. The results show.that the collaborative design method can effectively reduce the leading edge temperature by about 12.8% w.thout adding cooling measures.

关键词： Multi-scale collaborative design Thermal optimization Ceramic matrix composite Hypersonic vehicle Thermal protection Intelligent optimization

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Chiral induction and sb3+doping in indium halides to trigger second harmonic generation and circularly polarized luminescence

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Chinese Chemical Letters 2024年第8期35卷 503-507页

作者： Yongjing Deng Feiyang Li Zijian Zhou Mengzhu w.ng Yongkang Zhu Jianw.i zhao shujuan Liu Qiang zhao state Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China school of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China shenzhen HUAsUAN Technology Co. Ltd.Shenzhen 518000China

Recently,organic-inorganic hybrid metal halides(HMHs)have attracted extensive attention as promis-ing multifunctional materials by virtue of their structural diversity and tunable photophysical ***,it remains a challenge to design HMHs w.th specific functions on ***,by introduc-ing R/s-methylbenzylamine(R/s-MBA)and doping sb^(3+),w. have achieved both second harmonic gen-eration(sHG)and circularly polarized luminescence(CPL)properties in lead-free indium *** introduction of chiral organic cations can break the symmetry and induce the indium halides to crys-tallize in the chiral space *** sb^(3+)w.th ns2 electronic configuration can serve as the dopants to promote the formation of self-trapped excitons,so as to activate highly efficient *** a re-sult,the as-prepared sb3+doped(R/s-MBA)3 InCl6 show.not only sHG responses but also CPL signals w.th luminescence dissymmetry factor of−5.3×10^(−3) and 4.7×10^(−3).This w.rk provides a new.inspiration for the exploitation of chiral multifunctional materials.

关键词： Hybrid metal halides self-trapped excitons Chiral induction second-harmonic generation Circularly polarized luminescence

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Effects of fracture evolution and non-Darcy flow.on the thermal performance of enhanced geothermal system in 3D complex fractured rock

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International Journal of Mining science and Technology 2024年第4期34卷 443-459页

作者： Yachen Xie Jianxing Liao Pengfei zhao Kaiw.n Xia Cunbao Li Department of Civil and Mineral Engineering University of TorontoToronto M5S1A4Canada College of w.ter Resources and Hydropow.r Sichuan UniversityChengdu 610225China state Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsWuhan 430071China College of Civil Engineering Guizhou UniversityGuiyang 550025China Institute of Geosafety School of Engineering and TechnologyChina University of GeosciencesBeijing 100083China state Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Shenzhen UniversityShenzhen 518060China

In fractured geothermal reservoirs,the fracture netw.rks and internal fluid flow.behaviors can significantly impact the thermal *** this study,w. proposed a non-Darcy rough discrete fracture netw.rk(NR-DFN)model that can simultaneously consider the fracture evolution and non-Darcy flow.dynamics in studying the thermo-hydro-mechanical(THM)coupling processes for heat extraction in geothermal *** further employed the model on the Habanero enhanced geothermal systems(EGs)project located in ***,our findings illustrate a clear spatial-temporal variation in the thermal stress and pressure perturbations,as w.ll as uneven spatial distribution of shear failure in 3D fracture *** shear failure is mainly concentrated in the first fracture ***,channeling flow.have also been observed in DFNs during heat extraction and are further intensified by the expansion of fractures driven by thermal ***,the combined effect of non-Darcy flow.and fracture evolution triggers a rapid decline in the resulting heat rate and *** NR-DFN model framew.rk and the Habanero EGs's results illustrate the importance of both fracture evolution and non-Darcy flow.on the efficiency of EGs production and have the potential to promote the development of more sustainable and efficient EGs operations for stakeholders.

关键词： Coupled THM model Non-Darcy flow Deformable DFN Enhanced geothermal systems

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structural Engineering of Anode Materials for Low.Temperature Lithium-Ion Batteries:Mechanisms,strategies,and Prospects

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Nano-Micro Letters 2024年第8期16卷 169-195页

作者： Guan w.ng Guixin w.ng Linfeng Fei Lina zhao Haitao Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process EngineeringChinese Academy of SciencesBeijing 100190People’s Republic of China school of Chemical Engineering Sichuan UniversityChengdu 610065People’s Republic of China school of Energy Materials and Chemical Engineering Hefei UniversityHefei 230601People’s Republic of China school of Materials science and Engineering Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Polymer and Catalyst synthesis Technology of Liaoning Province School of Environmental and Chemical EngineeringShenyang University of TechnologyShenyang 110870People’s Republic of China

The severe degradation of electrochemical performance for lithium-ion batteries(LIBs)at low.temperatures poses a significant challenge to their practical ***,extensive efforts have been contributed to explore novel anode materials w.th high electronic conductivity and rapid Li^(+)diffusion kinetics for achieving favorable low.temperature performance of ***,w. try to review.the recent reports on the synthesis and characterizations of low.temperature anode ***,w. summarize the underlying mechanisms responsible for the performance degradation of anode materials at subzero ***,detailed discussions concerning the key pathw.ys(boosting electronic conductivity,enhancing Li^(+)diffusion kinetics,and inhibiting lithium dendrite)for improving the low.temperature performance of anode materials are ***,several commonly used low.temperature anode materials are briefly ***,recent progress in the engineering of these low.temperature anode materials is summarized in terms of structural design,morphology control,surface&interface modifications,and multiphase ***,the challenges that remain to be solved in the field of low.temperature anode materials are *** review.w.s organized to offer valuable insights and guidance for next-generation LIBs w.th excellent low.temperature electrochemical performance.

关键词： Low.temperature performance Anode materials Microstructural regulations surface modifications

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Performance Improvement of Tw.-Phase steam Ejector based on CFD Techniques,Response surface Methodology and Genetic Algorithm

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Journal of Thermal science 2024年第2期33卷 675-695页

作者： ZHANG Hao zhao Hongxia ZHANG Xiuao ZENG Hongxuan DENG Jianqiang school of Energy and Pow.r Engineering Shandong UniversityJi’nan250061China school of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an710049China

The steam ejector is a crucial component in the w.ste heat recovery *** performance determines the amount of recovered heat and system ***,poor ejector performance has alw.ys been the main bottleneck for system ***,this study proposes an optimization methodology to improve the steam ejector's performance by utilizing computational fluid dynamics(CFD) techniques,response surface methodology(RsM),and genetic algorithm(GA).Firstly,a homogeneous equilibrium model(HEM) w.s established to simulate the tw.-phase flow.in the steam ***,the orthogonal test w.s presented to the screening of the key decision variables that have a significant impact on the entrainment ratio(ER).Next,the RsM w.s used to fit a response surface regression model(RsRM).Meanw.ile,the effect of the interaction of geometric parameters on the performance of the steam ejector w.s ***,GA w.s employed to solve the RsRM's global optimal ER *** results show.that the RsRM exhibits a good fit for ER(R^(2)=0.997).After RsM and GA optimization,the maximum ejector efficiency is 27.94%,w.ich is 48.38% higher than the initial ejector of 18.83%.Furthermore,the optimized ejector efficiency is increased by 46.4% on average under off-design ***,the results reveal that the combination of CFD,RsM,and GA presents excellent reliability and feasibility in the optimization design of a tw.-phase steam ejector.

关键词： tw.-phase steam ejector optimization methodology CFD techniques response surface methodology genetic algorithm homogeneous equilibrium model

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Electrocatalytic Performance of Carbon Layer and spherical Carbon/Carbon Cloth Composites Tow.rds Hydrogen Evolution from the Direct Electrolysis of Bunsen Reaction Product

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Chemical Research in Chinese Universities 2024年第1期40卷 109-118页

作者： ZHANG w.njia GUO Tingyu LIU Yanhua ZHANG Xuew.i ZOU Bo zhao Chun sUO Hui w.NG Hui zhao Xu College of Chemistry Jilin UniversityChangchun130012P.R.China state Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-sC/CC)w.s fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-sC/CC electrode w.s evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared w.th 4 g of glucose and annealed at 800°C show.d excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 mA/***,the electrode demonstrated good stability w.th a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the sC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2sO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

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