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Macroscopic polarization enhancement boosting piezo-photocatalytic performance via Nb-doping on B-site of Bi_(4)Ti_(3)O_(12)nanosheets

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Journal of Advanced Ceramics 2024年第4期13卷 437-446页

作者： Hongjian Yu Xindong Wei Min Wang Yan Zhang Zheng Wu Fan Guo Jie Han School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Material Sciences and TechnologyChina University of Geosciences(Beijing)Beijing 100083China School of Environmental and Chemical Engineering Xi’an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an 710048China

The development of a high-performance ferroelectric piezo-photocatalyst is an efficient strategy for advancing sustainability within the environmental and energy ***,a major challenge lies in the creation of a strong polarized electric field that can effectively hinder charge recombination,both within the bulk and on the surface of ***,we synthesize a series of Nb-doped Bi_(4)Ti_(3)O_(12)nanosheets via a facile one-pot hydrothermal method to achieve synergistically enhanced piezo-photocatalytic performance in CO_(2)reduction and pollutant *** optimized doped Bi_(4)Ti_(3)O_(12)demonstrates remarkable efficiency in the conversion of CO_(2)into CO,with a high production rate of 72.7μmol∙g−1∙h−1 without using co-catalysts or any sacrificial agent,surpassing the performance of unmodified Bi_(4)Ti_(3)O_(12)by up to 4.69 ***,our catalyst demonstrates ultra-fast piezo-photocatalytic degradation of organic pollutant Rhodamine B(RhB)at low concentrations and exceptional piezo-photocatalytic activity at high concentrations,outperforming most previously reported state-of-the-art *** systematic corroboration of catalyst characterization and experimental analysis reveals that the synergistic effect arises from the amplified macroscopic polarization induced by lattice distortion caused by the larger Nb ions,thereby improving piezo-photocatalytic *** research thus offers valuable insights into the direct design and fabrication of versatile catalytic systems,with applications spanning CO_(2)valorization and beyond.

关键词： CO_(2)reduction dye degradation piezo-photocatalysis Nb-doped Bi_(4)Ti_(3)O_(12) macroscopic polarization regulation

Interfacial assembly of 2D polydopamine/graphene heterostructures with well-defined mesopore and tunable thickness for high-energy planar micro-supercapacitors

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Chinese Chemical Letters 2024年第7期35卷 439-444页

作者： Jieqiong Qin Zhi Yang Jiaxin Ma Liangzhu Zhang Feifei Xing Hongtao Zhang Shuxia Tian Shuanghao Zheng Zhong-Shuai Wu College of Science Henan Agricultural UniversityZhengzhou 450002China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China university of Chinese Academy of Sciences Beijing 100049China Mechanical and Electrical Engineering Institute Zhengzhou University of Light IndustryZhengzhou 450002China

Two-dimensional(2D)mesoporous pseudocapacitive polymer/graphene heterostructures combine the advanced merits of 2D materials and mesoporous materials,possessing unique nanosheet structure,large specific surface area(SSA),abundant oxygen/nitrogen-containing groups,desirable electrical conductivity and admirable electrochemical redox activity,and hold great potential for constructing high-performance planar micro-supercapacitors(MSCs).Herein,we demonstrate the interfacial assembly of 2D mesoporous polydopamine/graphene(mPDG)heterostructures with well-defined mesopore structure(12 nm)and adjustable thickness(7.5–14.1 nm)for planar high-energy pseudocapacitive *** to medium thickness,exposed mesopore of 12 nm and large SSA of 108 m^(2)/g,the m PDG with 10.8 nm thickness reveals prominent mass capacitance of 419 F/g and impressive cycling stability with~96%capacitance retention after 5000 ***,the symmetric mPDG-based MSCs with“water-in-salt”gel electrolyte present wide voltage window of 1.6 V,superior volumetric energy density of 11.5 mWh/cm^(3),outstanding flexibility and self-integration ***,this work offers a new platform of controllably synthesizing 2D mesoporous heterostructures for high-performance MSCs.

关键词： 2D materials Mesopores Heterostructures Polydopamine High energy density Micro-supercapacitors

Ferroelectric BaTiO_(3) /Pr_(2)O_(3) heterojunction harvesting roomtemperature cold–hot alternation energy for efficiently pyrocatalytic dye decomposition

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Journal of Advanced Ceramics 2024年第1期13卷 44-52页

作者： Zheng Wu Taosheng Xu Luohong Zhang Tingting Liu Zhansheng Wu Gangqiang Zhu Yanmin Jia School of Environmental and Chemical Engineering Xi’an Key Laboratory of Textile Chemical Engineering AuxiliariesXi’an Polytechnic UniversityXi’an 710048China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710062China

The strong pyrocatalytic dye decomposition of the BaTiO_(3)/Pr_(2)O_(3) heterojunction catalyst under cold–hot alternation conditions has been demonstrated in this *** pure BaTiO_(3) nanofibers,~54%rhodamine B(RhB)dye is decomposed under the cold–hot alternation of 29–57℃.With the loading content of Pr_(2)O_(3) increases from 0 to 4 wt%,the pyrocatalytic decomposition ratio of RhB solution increases first and then decreases,eventually achieving a maximum of 91%at 3 wt%.The enhanced pyrocatalytic performance after loading Pr_(2)O_(3) can be attributed to an internal electric field of the heterojunction,which effectively separates positive and negative *** strongly pyrocatalytic performance of BaTiO_(3)/Pr_(2)O_(3) makes it hopeful for applications in the dye wastewater treatment through harvesting the environmental cold–hot temperature alternation thermal energy in future.

关键词： pyroelectric materials BaTiO_(3) pyrocatalysis BaTiO_(3)/Pr_(2)O_(3)heterojunction dye decomposition

Efficient photocatalytic degradation of statin via optimization on ZnIn_(2)S_(4)/Bi_(2)WO_(6) Z-scheme heterostructure

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Journal of Advanced Dielectrics 2024年第4期14卷 104-114页

作者： Tingting Liu Libing Cao Mengge Yan Yushan Hu Tianlong Ren Zheng Wu School of Environmental and Chemical Engineering Xi’an Key Laboratory of Textile Chemical Engineering Auxiliaries Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province Xi’an Polytechnic University No.19Jin Hua RoadXi’an710048P.R.China Key Laboratory of Northwest Water Resource Environment and Ecology MOE Xi’an University of Architecture and Technology No.13Yan Ta RoadXi’an710055P.R.China Northwest Branch of Beijing CCI Architectural Design Co. Ltd No.26Gao Xin RoadXi’an 710065P.R.China Xi’an Capital Water Company Limited No.368 Kun Ming RoadXi’an 710086P.R.China

Statins are widely used in the treatment of hyperlipidemia disease,which are refractory in the municipal sewage treatment *** photocatalytic degradation of statins by the Z-scheme heterostructured photocatalyst is confirmed,but the degradation mechanism of statins needs to be further *** this study,the effects of photocatalyst dosage,solution pH and humic acid(HA)on the photocatalysis of fluvastatin by ZnIn_(2)S_(4)/Bi_(2)WO_(6) Z-scheme heterostructured photocatalyst(ZIS/BWO photocatalyst)were investigated and the degradation mechanism was *** showed that adsorption of fluvastatin was improved with the increase of photocatalyst dosage,but photoinduced desorption and light scattering resulted in the decrease of the removal of fluvastatin with high dosage.0.2 g/L of the ZIS/BWO photocatalyst was optimal dosage.65.21%of fluvastatin was removed at pH=9,because high concentration of OH^(-)was conducive to produce·*** change of pH,competition of photons and active sites,and trapping of reactive oxygen species(ROS)by carboxyl group of HA combined to inhibit the photocatalysis of fluvastatin in the presence of *** C–C,C=C and C–N bonds of fluvastatin were attacked by a variety of ROS to generate degradable intermediates that were easily mineralized to H_(2)O and CO_(2).

关键词： Fluvastatin photocatalytic technology Z-scheme heterostructured photocatalyst reaction condition degradation mechanism

A copper- and amine-free Sonogashira reaction employing chlorophosphine as new and efficient ligand

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Chinese Chemical Letters 2012年第2期23卷 185-188页

作者： Wen Peng Mai Jin Wei Yuan Zhi Cheng Li Gang Chun Sun Chemistry and Chemical Engineering School Henan University of TechnologyZhengzhou 450001China

An efficient palladium-catalyzed copper- and amine-free Sonogashira coupling reaction of aryl bromides and chlorides was studied using a sterically hindered monooxychlorophosphine as new *** use of 2 mol%Pd（OAc）_2 i... 详细信息

关键词： Palladium Copper-free Coupling Sonogashira reaction Chlorophosphine

Palladium-catalyzed Suzuki couplings using a novel diaminophosphine oxide as ligand

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Chinese Chemical Letters 2012年第5期23卷 521-524页

作者： Wen Peng Mai Hui Hui Wang Jin Wei Yuan Liang Ru Yang Zhi Cheng Li Chemistry and Chemical Engineering School Henan University of TechnologyZhengzhou 450001China

A novel diaminophosphine oxide was synthesized and applied as ligand in palladium-catalyzed Suzuki couplings reaction of aryl bromides and *** coupling reaction proceeded smoothly at mild conditions using 2 mol%Pd_2（... 详细信息

关键词： Palladium Suzuki reaction Coupling Diaminophosphine oxide

Microstructural evolution and corrosion behavior of directionally solidified FeCoNiCrAl high entropy alloy

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China Foundry 2011年第3期8卷 259-263页

作者： Cui Hongbao Wang Ying Wang Jinyong Guo Xuefeng Fu Hengzhi School of Materials Science and Engineering Henan Polytechnic University Jiaozuo 454000 China State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi＇an 710072 China

The FeCoNiCrAl alloys have many potential applications in the fields of structural materials, but few attempts were made to characterize the directional solidification of high entropy alloys. In the present research, the microstructure and corrosion behavior of FeCoNiCrAI high entropy alloy have been investigated under directional solidification. The results show that with increasing solidification rate, the interface morphology of the alloy evolves from planar to cellular and dendritic. The electrochemical experiment results demonstrate that the corrosion products of both non-directionally and directionally solidified FeCoNiCrAI alloys appear as rectangular blocks in phases which Cr and Fe are enriched, while AI and Ni are depleted, suggesting that AI and Ni are dissolved into the NaCl solution. Comparison of the potentiodynamic polarization behaviors between the two differently solidified FeCoNiCrAl high entropy alloys in a 3.5%NaCl solution shows that the corrosion resistance of directionally solidified FeCoNiCrAI alloy is superior to that of the non-directionally solidified FeCoNiCrAI alloy.

关键词： microstructure corrosion behavior directional solidification FeCoNiCrAI high entropy alloy

Experimental study and numerical simulation of gas/particle flow in tunneling of mine

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Journal of Coal Science & Engineering(China) 2009年第1期15卷 85-87页

作者： LU Zhong-liang LI Hai-xia GUO Pei-hong JING Guo-xun School of Safety Science and Engineering Henan Polytechnic University Jiaozuo 454000 China School of Mechanical and Power Engineering Henan Polytechnic University Jiaozuo 454000 China

Respiration particles can be collected into a dust catcher by an inside inhalingand outside pressing particle collector. The work environment of the grab operator in tunneling mining was improved when a dust catcher is placed before the working face of thegrab operator. The particle movement was affected by the gas flow. The flow field insideand outside the dust collector was simulated. The effect of the operating parameter wasanalyzed. The numerical results show a good approach to predict the gas flow and particledistribution in the inside and outside of the particle collector.

关键词： grab working face particle movement inside inhaling and outside pressing particle collector

First-principle calculation on mechanical and thermal properties of B2-NiSc with point defects

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Journal of Semiconductors 2017年第1期38卷 81-85页

作者： Zhipeng Yuan Hongbao Cui Xuefeng Guo Materials Science&Engineering College Henan Polytechnic UniversityJiaozuo 454000China

Using the first-principles plane-wave pseudo-potential method based on density functional theory,the effect of vacancy and anti-position defect on the mechanical and thermal properties of B2-NiSc intermetallics were discussed in *** parameters,such as the shear modulus,bulk modulus,modulus of elasticity,C11-C12,the Debye temperature and Poisson＇s ratio,have been calculated to evaluate the effect of vacancy and anti-position defect on the hardness,ductility and thermal properties of B2-NiSc *** results show that VNi,ScNi,VSc and NiSc the four point defects all make the crystal hardness decrease and improve plasticity of B2-NiSc *** entropy,enthalpy and free energy of VNi,ScNi,VSc and NiSc are monotonously changed as temperature *** the perspective of free energy,NiSc is the most stable,while ScNiis the most *** temperature of NiSc intermetallics with four different point defects shows VNi,ScNi,VSc and NiScthe four point defects all reduce the stability of B2-NiSc intermetallics.

关键词： B2-NiSc intermetallics vacancy anti-position defect plasticity Debye temperature