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Highly enhanced photoelectric catalysis of WO_(3) nanoblocks loaded with Ag nanoparticles

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Optoelectronics Letters 2023年第4期19卷 193-199页

作者： YANG Jikai liu chunlei ZHANG Yufei School of Physics Changchun University of Science and TechnologyChangchun 130022China

WO_(3)/Ag composite film photoanodes were synthesized by hydrothermal combined electrodeposition *** of samples was conducted by scanning electron microscope(SEM)and X-ray diffraction(XRD),which showed that WO_(3)/Ag composite films had been *** reflectance spectra show WO_(3)/Ag composite film has more strong absorption than WO_(3) film under simulated visible light *** impedance spectroscopy shows WO_(3)/Ag composite film photoanode enhances charge transfer efficiency compared with WO_(3) ***_(3)/Ag composite film photoanodes show higher photocurrent and photoelectric catalytic activity than WO_(3) film,and the WO_(3)/Ag composite film obtained by depositing Ag nanoparticles at 50 s(WO_(3)/Ag-50)shows the highest photocurrent and photoelectric photoelectric catalytic ***,the photoelectric catalytic activity of the composite film is higher than their direct photocatalytic and electric catalytic *** higher photocurrent and photoelectric catalytic activity of the WO_(3)/Ag composite film photoanodes are attributed to the surface plasmon resonance effect of Ag nanoparticles and Schottky junction effect at the WO_(3)/Ag interface.

关键词： composite nanoparticles film

Electrochromism and photoelectrochemical performance of WO_(3)/Au composite film electrodes

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Optoelectronics Letters 2023年第11期19卷 673-680页

作者： liu chunlei YANG Jikai liu Haorui ZHAO Yiming Chongqing Research Institute Changchun University of Science and TechnologyChongqing400000China School of Physics Changchun University of Science and TechnologyChangchun130022China

WO_(3)/Au composite film electrode was prepared by hydrothermal combined electrodeposition *** samples were characterized by scanning electron microscope(SEM),energy dispersive spectrometer(EDS) and X-ray diffraction(XRD),and the results showed that WO_(3)/Au composite film was *** and spectral measurements were carried out to obtain the electrochromic response time,reversibility,coloration efficiency(CE) and transmittance of the WO_(3)/Au composite *** photoelectrochemical properties of the samples were characterized by measuring photocurrent and photocatalytic degradation *** results show that compared with pure WO_(3) nanoblocks,WO_(3)/Au composite film improves the electrochromic property,photocurrent and photoelectric catalysis *** them,WO_(3)/Au composite film prepared by depositing Au nanoparticles in 80 s showed the highest electrochromic property,photocurrent and photoelectric catalysis ***,compared with direct photocatalysis(DP) and electrocatalysis(EC),the photoelectrocatalysis(PEC) activity of the composite film is the highest.

关键词： composite film

A high-performance electrochromic device assembled with WO_(3)/Ag and TiO_(2)/NiO composite electrodes towards smart window

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Frontiers of Materials Science 2024年第1期18卷 123-135页

作者： Haorui liu Jikai Yang Decai Nie chunlei liu liumenghan Zheng Yining Mu Weijun Chen Chongqing Research Institute Changchun University of Science and TechnologyChongqing 400000China School of Physics Changchun University of Science and TechnologyChangchun 130022China

The choice of cathode and anode materials for electrochromic devices plays a key role in the performance of electrochromic smart *** this research,WO_(3)/Ag and TiO_(2)/NiO composite thin films were separately prepared by the hydrothermal method combined with *** electrochromic properties of the single WO_(3) thin film were optimized,and TiO_(2)/NiO composite films showed better electrochromic performance than that of the single NiO ***_(3)/Ag and TiO_(2)/NiO composite films with excellent electrochromic properties were respectively chosen as the cathode and the anode to construct a WO_(3)/Ag‒TiO_(2)/NiO electrochromic *** response time(tc=4.08 s,tb=1.08 s),optical modulation range(35.91%),and coloration efficiency(30.37 cm^(2)·C^(-1))of this electrochromic device are better than those of WO_(3)-NiO and WO_(3)/Ag-NiO electrochromic *** work provides a novel research idea for the performance enhancement of electrochromic smart windows.

关键词： WO_(3)/Ag composite film TiO_(2)/NiO composite film electrochromic device

Sensitivity of Typhoon Lingling(2019)simulations to horizontal mixing length and planetary boundary layer parameterizations

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Frontiers of Earth Science 2022年第2期16卷 304-322页

作者： Siqi CHEN Feng XU Yu ZHANG Guiling YE Jianjun XU chunlei liu College of Ocean and Meteorology Guangdong Ocean UniversityZhanjiang 524088China South China Sea Institute of Marine Meteorology Zhanjiang 524088China Shenzhen Institute of Guangdong Ocean University Shenzhen 518120China

Forecasting the intensity of typhoons is a difficult problem in numerical weather *** is subject to many factors,among which the selection of physical parameterization schemes for the model is a hot topic of *** this study,the effects of horizontal mixing length(represented by h_diff)and planetary boundary layer(PBL)schemes were *** idealized and four operational sensitivity experiments were designed based on simulation of the typhoon Lingling,which occurred over the western Pacific in 2019,using the Hurricane Weather Research and Forecasting *** results of the idealized experiments showed that,as h_diff was increased,the slope of the typhoon eye area also increased,and its intensity became *** the other hand,the results of the sensitivity experiments indicated that the intensity of the simulated typhoon was sensitive to the choice of PBL scheme,with the forecast bias of the QNSE(Quasi-Normal Scale Elimination)scheme being smaller than that of the GFDL(Geophysical Fluid Dynamics Laboratory)*** momentum budget analyses indicated that,when increasing the h_diff,the convergence of angular momentum was larger in the boundary layer,which led to a faster spin-up of the vortex,further increasing the intensity of the *** the calculated horizontal and vertical vortex spread it was found that,when the h_diff was increased,the corresponding horizontal and vertical diffusion eddies also showed an increasing trend,which was also the reason for the strengthening of the ***,the forecast bias decreased significantly with increasing horizontal mixing length when using the same PBL scheme.

关键词： Hurricane Weather Research and Forecasting model planetary boundary layer western Pacific typhoon horizontal diffusion

Local and Global Character Sums

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Acta Mathematica Sinica,English Series 2000年第3期16卷 535-540页

作者： chunlei liu Zhengzhou University of Information Engineering,Zhengzhou 450002,P.R.China Zhengzhou University of Information Engineering Zhengzhou 450002 P. R. China

Hua’s estimate is established for character sums in a number field.A relationship between liftings of a character sum in a local field is also studied.

关键词： Character sum Exponential sum

Quantifying the Preferential Flow by Dye Tracer in the North China Plain

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Journal of Earth Science 2015年第3期26卷 435-444页

作者： Qinghua Wu chunlei liu Wenjing Lin Meng Zhang Guiling Wang Fawang Zhang Changjiang River Scientific Research Institute Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Institute of Karst Geology Chinese Academy of Geological Sciences

The preferential flow plays a vital role on the infiltration of irrigation or rainfall. The objective of this study was to quantify preferential flow in the processing of irrigation infiltration in the field scale. Tests of different initial soil water contents and irrigation intensities were conducted using Brilliant Blue FCF（C.I.42090） dye tracer in Luancheng County of the North China Plain. The results showed that the percentages of infiltration by the preferential flow for irrigation depth of 25, 50, and 75 mm were 16.67%, 43.67%, and 34.17%, with 19.72%, 61.42%, 66.64% of dyed areas in the soil profile, respectively, which indicated that preferential flow was enhanced with increasing irrigation intensity, but reduced when the irrigation intensity was over 50 mm. The percentages of preferential flow for 75 and 180 mm previous irrigation producing different initial soil water contents were 23.26% and 18.97%, with 53.23% and 39.94% of dyed areas in the soil profile, respectively. Compared with the 75 mm without previous irrigation, the results indicated that higher initial soil water contents restrained the preferential flow in the field. Therefore, intermittent irrigation and low irrigation intensity patterns, and larger depth of plowing would be suggested to reduce the preferential flow which would increase the soil water utilization efficiency and reduce pollution risk of pesticide and fertilizer to groundwater.

关键词： Brilliant Blue FCF preferential flow infiltration North China Plain

On Incomplete Gaussian Sums

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Acta Mathematica Sinica,English Series 1996年第2期12卷 141-150页

作者： liu chunlei liu chunlei Department of Mathematics Peking University Beijing,100871 ChinaCurrent Address:Department of Mathematics Sichuan University Chengdu,610064 China Department of Mathematics Peking University Beijing China

In this paper it is proved that sum from N=N+1 to N+H x（n）ψ（n）（?）ε H1-（1/r）q(（1/4（r-）1）+ε, where r=4,q is a prime power,χ and ψ are multiplicative and additive characters modulo q respectively,with χ... 详细信息

关键词： Multiplicative characters

Particle Size Truncation Effect on the Inference of Effective Particle Diameter

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Advances in Atmospheric Sciences 1997年第3期14卷 63-67页

作者： liu chunlei Yao Keya Department of Earth and Space Sciences University of Science and Technology of China Hefei

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ＰａｒｔｉｃｌｅＳｉｚｅＴｒｕｎｃａｔｉｏｎＥｆｅｃｔｏｎｔｈｅＩｎｆｅｒｅｎｃｅｏｆＥｆｅｃｔｉｖｅＰａｒｔｉｃｌｅＤｉａｍｅｔｅｒ①ＬｉｕＣｈｕｎｌｅｉ（刘春雷）②＿ａｎｄＹａｏＫｅｙａ（姚克亚）ＤｅｐａｒｔｍｅｎｔｏｆＥａｒｔｈａｎｄＳｐａｃｅ...

关键词： Size truncation Effective particle diameter Cirrus cloud

Diagnostic Study of an Extreme Explosive Cyclone over the Kuroshio/Kuroshio Extension Region

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Journal of Ocean University of China 2024年第3期23卷 605-617页

作者： ZHANG Shuqin LIAO Qinghua liu chunlei GAO Xiaoyu LONG Jingchao LI Pengyuan XU Jianjun College of Ocean and Meteorology Guangdong Ocean UniversityZhanjiang 524088China South China Sea Institute of Marine Meteorology Guangdong Ocean UniversityZhanjiang 524088China CMA-GDOU Joint Laboratory for Marine Meteorology Guangdong Ocean UniversityZhanjiang 524088China Key Laboratory of Climate Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong ProvinceGuangdong Ocean UniversityZhanjiang 524088China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Department of Marine Meteorology Ocean-Atmosphere Interaction and Climate LaboratoryKey Laboratory of Physical OceanographyOcean University of ChinaQingdao 266100China

Explosive cyclones(ECs)occur frequently over the Kuroshio/Kuroshio Extension *** most rapidly intensified EC over the Kuroshio/Kuroshio Extension region during the 42 years(1979-2020)of cold seasons(October-April)was studied to reveal the variations of the key factors at different explosive-developing *** EC had weak low-level baroclinicity,mid-level cyclonic-vorticity advection,and strong low-level water vapor convergence at the initial explosive-developing *** low-level baroclinicity and mid-level cyclonic-vorticity advection increased substantially during the maximum-deepening-rate *** diagnostic analyses using the Zwack-Okossi equation showed that diabatic heating was the main contributor to the initial rapid intensification of this *** cyclonic-vorticity advection and warm-air advection enhanced rapidly in the middle and upper troposphere and contributed to the maximum rapid intensification,whereas the diabatic heating weakened slightly in the mid-low *** relative contribution of the diabatic heating decreased from the initial explosive-developing stage to the maximum-deepening-rate stage due to the enhancement of other factors(the cyclonic-vorticity advection and warm-air advection).Furthermore,the physical factors contributing to this EC varied with the explosive-developing *** non-key factors at the initial explosive-developing stage need attention to forecast the rapid intensification.

关键词： explosive cyclone diabatic heating cyclonic-vorticity advection rapid intensification the Kuroshio/Kuroshio Extension region