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Photoelectrocatalytic degradation of Rose Bengal

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Journal of Environmental Sciences 2003年第5期15卷 595-599页

作者： LIUHui-ling ZHOUDing LIXiang-zhong YUEPing-tao DepartmentofEnvironmentalEngineering HarbinInstituteofTechnologyHarbin150001China DepartmentofCivilandStructuralEngineering TheHongKongPolytechnicUniversityHungHornKomloonHongKong

An innovative photoelectrode, TiO 2/Ti mesh electrode, was prepared by galvanostaticanodisation. The morphology and the crystalline texture of the TiO 2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rose Bengal(RB) in photocatalytic(PC) and photoelectrocatalytic(PEC) reaction was investigated, the results demonstrated that electric biasing could improve the efficiency of photocatalytic reaction. The measurement results of TOC in photoelectrocatalytic degradation showed that the mineralisation of RB was complete relatively. The comparison between the degradation efficiency of RB in PEC process and that in aqueous TiO 2 dispersion was conducted. The results showed that the apparent first order rate constant of RB degradation in PEC process was larger than that in aqueous dispersion with 0 1%—0 3% TiO 2 powder, but was smaller than that in aqueous dispersion with 1 0% TiO 2

关键词： mesh electrode anodisation TiO 2 photoelectrocatalytic oxidation Rose Bengal

Numerical simulation of fluid flow and alloy melting in RH process for electrical steels

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Journal of Iron and Steel Research International 2022年第9期29卷 1423-1433页

作者： Haijun Wang Rui Xu Hai-tao ling Wei zhong Li-zhong Chang Sheng-tao Qiu Anhui Province Key Laboratory of Metallurgical Engineering and Resources Reeyeling Anhui University of TechnologyMa'anshan 243002AnhuiChina School of Metalurgical Engineering Anhui University of Technology.Ma'anshan 243002AnhuiChina State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Xinyu Iron and Steel Co. Ltd.Xinyu 338001JiangxiChina National Engineering and Research Centerfor Continuous Casting Technology Central Iron and Steel Research InstituteBeijing 100081China

Based on the Eulerian-Lagrangian approach,a mathematical model was established to describe the gas-liquid flow behavior in the Ruhrstahl-Heraeus(RH)*** momentum source and the turbulent kinetic energy source due to the motion of gas bubbles were considered for the liquid *** effect of the expansion of gas bubbles on the liquid velocity,recirculation rate,and mixing time was quantitatively *** the fluid flow reached the steady state,the melting and mixing processes of aluminum alloys in the RH degasser were also *** results indicate that the expansion of gas bubbles has a significant infuence on the recirculation rate and the mixing time in the RH *** the superheat of liquid steel and decreasing the initial diameter of alloy particles are beneficial to promote the melting and mixing of alloy *** to the existence of solidified steel shells,the maximum diameter of the alloy particle is about 1.5 times its initial diameter.

关键词： Discrete particle model Multiphase flow Gas expansion-Mixing time Alloy melting Numerical simulation

Preparation of TiO_2/Ti mesh photoelectrode and properties

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Journal of Environmental Sciences 2003年第3期15卷 311-314页

作者： LIUHui-ling LIXuan-dong ZHOUDing LIXiang-zhong YUEPing-tao DepartmentofEnvironmentalEngineering HarbinInstituteofTechnologyHarbin15001China.E-mail:huilingliu2000@*** DepartmentofCivilandStructuralEngineering TheHongKongPolytechnicUniversity.HungHomKomloonHongKong

An innovative photoelectrode, TiO_2/Ti mesh electrode, was prepared by anodisation. In anodisation, 0.5 mol/L H_2SO_4 was used as electrolytic solution, the current had been constantly 1A from the beginning of the oxidation until reaching a designed voltage. Results showed that the photocatalytic activity of electrode was better when the designed voltage was 160 V. The morphology and the crystalline texture of the TiO_2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rhodamine B in photocatalytic (PC) and photoelectrocatalytic (PEC) reaction was investigated.

关键词： mesh photoelectrode anodisation TiO_2 photoelectrocatalytic oxidation rhodamine B

Eigenvalues for the Clamped Plate Problem of L_(ν)^(2) Operator on Complete Riemannian Manifolds

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Acta Mathematica Sinica,English Series 2024年第9期40卷 2223-2243页

作者： ling zhong ZENG Jiangxi Provincial Center for Applied Mathematics&School of Mathematics and Statistics Jiangxi Normal UniversityNanchang 330022P.R.China

L_(ν) operator is an important extrinsic differential operator of divergence type and has profound geometric *** this paper,we consider the clamped plate problem of L_(ν)^(2)operator on a bounded domain of the complete Riemannian manifolds.A general formula of eigenvalues of L_(ν)^(2) operator is *** this general formula,we obtain some estimates for the eigenvalues with higher order on the complete Riemannian *** several fascinating applications,we discuss this eigenvalue problem on the complete translating solitons,minimal submanifolds on the Euclidean space,submanifolds on the unit sphere and projective *** particular,we get a universal inequality with respect to the L_(II) operator on the translating ***,it is very difficult to get universal inequalities for weighted Laplacian and even Laplacian on the complete Riemannian ***,this work can be viewed as a new contribution to universal estimate.

关键词： Mean curvature flows L_(ν)^(2)operator clamped plate problem eigenvalues Riemannian manifolds translating solitons

Localization of q-form fields on a de Sitter brane in chameleon gravity

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Frontiers of physics 2024年第3期19卷 11-18页

作者： Yi zhong tao-tao Sui School of Physics and Electronics Science Hunan UniversityChangsha 410082China Lanzhou Center for Theoretical Physics Key Laboratory of Theoretical Physics of Gansu Provinceand Key Laboratory of Quantum Theory and Applications of MoELanzhou UniversityLanzhou 730000China College of Physics Nanjing University of Aeronautics and AstronauticsNanjing 211106China

Recently,it was found that the vector field can be naturally localized on the thick brane in chameleon *** this work,we extend this study to encompass de Sitter brane *** focus on the localization of q-form *** scalar and vector fields can be localized on the de Sitter brane,while the KR field cannot be *** condition for localization of the scalar and vector fields is ***,we investigate the localization characteristics in two examples with given conformal factor b(ϕ).In the first case,the effective potentials and KK modes of the matter fields are obtained asymmetric even though the de Sitter brane has Z2 *** the second case,volcano-like effective potentials are generated in the de Sitter brane model.

关键词： brane q-form field chameleon gravity

Nickel Sulfide Modified NiCu Nanoalloy with Excellent Oxygen Evolution Reaction Properties Prepared through Electrospinning and Heat Treatment

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 320-326页

作者：李涛凌帅 zhong Shujie LOU Qiongyue Department of Materials Engineering School of Mechanical EngineeringChengdu UniversityChengdu 610106China

Ni^(2+)/Cu^(2+)/SO_(4)^(2-)/polyvinyl alcohol precursor fibers with uniform diameters were prepared through ***-based composite nanoalloys containing Ni,Cu,and S were prepared through heat treatment in an Ar *** experimental results show that the main components of the prepared nanoalloys are NiCu,Ni_(3)S_(2),Ni,and *** nanoalloys exhibit fine grain sizes about 200-500 nm,which can increase with increasing heat treatment *** test results show that the nickel sulfidemodified NiCu nanoalloy composites exhibit excellent oxygen evolution reaction properties,and the oxygen evolution reaction properties gradually improve with the increasing heat treatment *** sample prepared at 1 000℃ for 40 min show a low overpotential of 423 mV and a small Tafel slope of 134 mV·dec^(-1) at a current density of 10 mA·cm^(-2).

关键词： NiCu nanoalloy Ni_(3)S_(2) structure transformation oxygen evolution reaction

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Ni_(3)Fe/Ni_(4)S_(3)/Ni/C Mixed Crystal Composite Nanofibers Prepared by Electrospinning and Heat Treatment Methods for Oxygen Evolution Reaction

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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 267-273页

作者： LI tao zhong Shujie LOU Qiongyue ling Shuai CHEN Jian MA Guohua YANG Mao WU Xiaoqiang Department of Materials Engineering School of Mechanical EngineeringChengdu UniversityChengdu610106China Material Corrosion and Protection Key Laboratory of Sichuan Province Zigong643000China Analysis and Testing Center Southwest University of Science and TechnologyMianyang621010China

OER catalyst of Ni_(3)Fe/Ni_(4)S_(3)/Ni/C(NiFeSC series)mixed crystal composite nanofibers was prepared by electrospinning and atmospheric heat treatment *** testing results indicate that the diameters of Ni_(3)Fe/Ni_(4)S_(3)/Ni/C composite nanofibers is about 200 nm,the grains size is about 1-3 nm,and the fiber surface is *** electrochemical test results show that the heterojunction of the prepared Ni_(3)Fe/Ni_(4)S_(3)/Ni/C hybrid crystal composite nanofiber has synergistic effect with sulfide,and exhibits good electrocatalytic activity of water decomposition and OER in alkaline *** OER electrocatalytic performance of Ni_(3)Fe/Ni_(4)S_(3)/Ni/C composite electrode prepared via a heat treatment at 1000℃process was tested in 1 mol/L KOH *** results show that the overpotential is about 298 mV,the Tafel slope is about 74 mV?dec-1,and the surface resistance is about 1.69Ω·cm^(2),at the current density of 10 mA·cm^(-2).

关键词： mixed crystal composite material nanofiber NiFeSC oxygen evolution reaction(OER)

Improving global weather and ocean wave forecast with large artificial intelligence models

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Science China Earth Sciences 2024年第12期67卷 3641-3654页

作者： Fenghua ling Lin OUYANG Boufeniza Redouane LARBI Jing-Jia LUO tao HAN Xiaohui zhong Lei BAI Institute for Climate and Application Research(ICAR)/CIC-FEMD/KLME/ILCEC School of Future TechnologyNanjing University of Information Science and TechnologyNanjing 210044China Ganzhou Meteorological Bureau Ganzhou 341000China Shanghai AI Laboratory Shanghai 200232China The Hong Kong University of Science and Technology Hong Kong 999077China Artificial Intelligence Innovation and Incubation Institute of Fudan University Shanghai 201203China

The rapid advancement of artificial intelligence technologies,particularly in recent years,has led to the emergence of several large parameter artificial intelligence weather forecast *** models represent a significant breakthrough,overcoming the limitations of traditional numerical weather prediction models and indicating the emergence of profound potential tools for atmosphere-ocean *** study explores the evolution of these advanced artificial intelligence forecast models,and based on the identified commonalities,proposes the“Three Large Rules”for large weather forecast models:a large number of parameters,a large number of predictands,and large potential *** discuss the capacity of artificial intelligence to revolutionize numerical weather prediction,briefly outlining the underlying reasons for the significant improvement in weather *** acknowledging the high accuracy,computational efficiency,and ease of deployment of large artificial intelligence forecast models,we also emphasize the irreplaceable values of traditional numerical forecasts and explore the challenges in the future development of large-scale artificial intelligence atmosphere-ocean forecast *** believe that the optimal future of atmosphere-ocean weather forecast lies in achieving a seamless integration of artificial intelligence and traditional numerical *** a synthesis is anticipated to offer a more advanced and reliable approach for improved atmosphere-ocean ***,we illustrate how forecasters can leverage the large weather forecast models through an example by building an artificial intelligence model for global ocean wave forecast.

关键词： Numerical weather prediction Deep learning Large AI weather forecast models Global ocean wave forecast