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Science China(Technological Sciences) 2020年第5期63卷 859-865页

作者： GE Bo REN GuiNa YANG Hang YANG JingJing pu xipeng LI WenZhi JIN ChuanYu ZHANG ZhaoZhu School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000China School of Environmental and Material Engineering Yantai UniversityYantai 264405China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

It is a challenge to endow the material with the ability to pollutants degradation while maintaining the oil/water separation performance. Herein, the mixed dispersion of BiOBr photocatalyst and silicone sol was adsorbed in melamine foam. Superhydrophobic BiOBr-silicone aerogel(WCA=154°) was obtained through the transfer melamine foam to an autoclave and reaction at 80℃ for 20 h. The prepared superhydrophobic BiOBr-silicone aerogel can effectively remove the water soluble pollutants which remain within the water phase after oil/water separation. The band gap of the superhydrophobic BiOBr-silicone aerogel was calculated to be 2.71 eV, which shows sensitivity to visible light(458 nm). Through mechanism analysis, it is found that the VB position of BiOBr is at 1.07 eV and the position of CB is at-1.64 eV. Finally, we prepared a superhydrophobic BiOBr-silicone aerogel(5 cm×5 cm×3 cm) for the verification of the large scale preparation.

关键词： BiOBr silicone aerogel melamine sponge water purification

SnFe_(2)O_(4)/ZnIn_(2)S_(4)/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

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Journal of Advanced Ceramics 2023年第9期12卷 1685-1700页

作者： Ping Su Dezhi Kong Huaihao Zhao Shangkun Li Dafeng Zhang xipeng pu Changhua Su Peiqing Cai School of Materials Science and Engineering Shandong Key Laboratory of Chemical Energy Storage and New Battery TechnologyLiaocheng UniversityLiaocheng 252000China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China

The polarized electric field inside piezoelectric materials has been proven to be a promising technique to boost photogenerated charge ***,a novel flexible SnFe_(2)O_(4)/ZnIn_(2)S_(4)/polyvinylidene fluoride((CH2CF2)_(n),PVDF)(P-SZ)film piezophotocatalyst was successfully synthesized by combining PVDF,an organic piezoelectric material,with a SnFe_(2)O_(4)/ZnIn_(2)S_(4)(SFO/ZIS)type II heterojunction *** hydrogen evolution rate of SFO/ZIS heterojunction with a SFO content of 5%is about 846.79μmol·h^(−1)·g^(−1),which is 3.6 times that of pristine ***,after being combined with PVDF,the optimum hydrogen evolution rate of P-SZ is about 1652.7μmol·h^(−1)·g^(−1)in the presence of ultrasound,which exceeds that of 5%SFO/ZIS by an approximate factor of *** on experimental results,the mechanism of the improved photocatalytic performance of P-SZ was proposed on the basis of the piezoelectric field in PVDF and the formed heterojunction between SFO and ZIS,which effectively boosted the separation of photoinduced *** work provides an efficient strategy for multi-path collection and utilization of natural solar and vibrational energy to enhance photoactivity.

关键词： heterojunction piezophotocatalysis SnFe_(2)O_(4)(SFO) ZnIn_(2)S_(4)(ZIS) polyvinylidene fluoride((CH_(2)CF_(2))_(n),PVDF)film

Re-usable Cd_(0.9)Zn_(0.1)S-ZnO@C/PVDF piezo-photocatalytic film with exceptional hydrogen evolution capability triggered by the synergetic advantages of piezoelectricity and S-Scheme heterojunction

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Journal of Energy Chemistry 2024年第9期96卷 164-176页

作者： Ping Su Dong Zhang Minghui Zhu Tengteng Liang Nan Yang Huaihao Zhao Dafeng Zhang Junchang Liu Peiqing Cai xipeng pu School of Materials Science and Engineering Shandong Provincial Key Laboratory of Chemical Energy Science and Novel Cell TechnologyLiaocheng UniversityLiaocheng 252000ShandongChina School of Physics Science and Information Technology Shandong Key Laboratory of Optical Communication Sciencend TechnologyLiaocheng UniversityLiaocheng 252000ShandongChina College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018ZhejiangChina

Piezoelectric materials have advantages of fine-tuning photocatalytic performance through harvesting mechanical energy and open a new avenue in facilitating green catalytic ***,polyvinylidene fluoride(PVDF),a flexible piezoelectric material,was introduced to synthesize a novel Cd_(0.9)Zn_(0.1)S-ZnO@C/PVDF(CZS-ZO@C/PVDF)piezo-photocatalytic film by spin coating and immersion phase conversion *** from the piezoelectricity of PVDF and the internal electric field(IEF)of CZS-ZO@C Step-scheme(S-Scheme)heterojunction,CZS-ZO@C/PVDF was able to induce a hydrogen generation rate of 34.9 mmol g^(−1)h^(−1)activated by ultrasound and visible light(U-L),which is∼17.5 times of Cd_(0.9)Zn_(0.1)S/PVDF(CZS/PVDF)and∼7.4 times of the photocatalysis rate activated by visible light only(L).Piezoelectric measurements and COMSOL simulation illustrated the excellent piezoelectricity of CZS-ZO@C/PVDF film,which exhibits a piezoelectric coefficient(d33)of 9.9 pm V−1 and a piezoelectric potential of 874 mV(under 0.5 MPa).The reaction mechanism for the exceptional piezo-photocatalytic performance was finally disclosed through density functional theory(DFT)calculation and electrochemical *** study enriches the application scope of piezoelectric materials in sustainable energy catalysis and provides a new direction to develop efficient piezoelectric photocatalysts.

关键词： Piezo-photocatalysis Heterojunction Cd_(0.9)Zn_(0.1)S Zno@c PVDF

One stone,three birds:up-conversion,photothermal and p-n heterojunction to boost BiOBr:Yb^(3+),Er^(3+)/Cu_(3)Mo_(2)O_(9) full spectrum photodegradation

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Frontiers of Chemical Science and Engineering 2024年第10期18卷 119-131页

作者： Xintong Yao Dong Zhang Yupeng Liu Yanzhao Chen Dafeng Zhang Junchang Liu Xue-Yang Ji Hengshuai Li Peiqing Cai xipeng pu School of Materials Science and Engineering Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell TechnologyLiaocheng UniversityLiaocheng 252000China School of Physics Science and Information Technology Shandong Key Laboratory of Optical Communication Science and TechnologyLiaocheng UniversityLiaocheng 252000China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China

Broadening spectral response range to realize the full spectrum photocatalysis is crucial to develop photocatalysts with satisfactory light-energy conversion ability.A full-spectrum driven p-n heterojunction photocatalytic system was rationally designed through introducing the Er^(3+)/Yb^(3+)co-doped BiOBr with up-conversion effect as the collector of near infrared light and photocatalysts ***,Cu_(3)Mo_(2)O_(9) with the photothermal effect as a heat source to accelerate the reaction at the surface through absorbing the near infrared *** photocatalytic activity of BiOBr:Yb^(3+),Er^(3+)/Cu3Mo2O9 composite was markedly strengthened under visible and near infrared light irradiation,and the BiOBr:Yb^(3+),Er^(3+)/Cu_(3)Mo_(2)O_(9)-5 composite displayed the optimal photodegradation activities for 0.03372 min^(-1) and 0.058 h^(-1),being 2.3-folds and 2.4-folds than that of pure BiOBr:Yb^(3+),Er^(3+)under the visible and near infrared light,*** position of doped ions(Yb^(3+)and Er^(3+))in BiOBr:Yb^(3+),Er^(3+)was determined from the X-ray absorption fine structure *** the reasonable mechanism of p-n heterojunction was proposed base on the results of experimental and density functional theory *** work provides a rational strategy for the design and development of full-spectrum heterojunction photocatalysts with the up-conversion and photothermal effects to increase the photocatalytic performance.

关键词： photocatalyst full spectrum p-n heterojunction photothermal effect up-conversion

Rational construction of CuFe_(2)O_(4)@C/Cd_(0.9)Zn_(0.1)S S-scheme heterojunction photocatalyst for extraordinary photothermal-assisted photocatalytic H_(2) evolution

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Journal of Energy Chemistry 2024年第5期92卷 240-249页

作者： Dong Zhang Minghui Zhu Ran Qin Peixian Chen Maoye Yin Dafeng Zhang Junchang Liu Hengshuai Li xipeng pu Peiqing Cai School of Physics Science and Information Technology Shandong Key Laboratory of Optical Communication Science and TechnologyLiaocheng UniversityLiaocheng 252000ShandongChina School of Materials Science and Engineering Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell TechnologyLiaocheng UniversityLiaocheng 252000ShandongChina College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018ZhejiangChina

Rational design of photocatalyst to maximize the use of sunlight is one of the issues to be solved in photocatalysis *** this study,the CuFe_(2)O_(4)@C/Cd_(0.9)Zn_(0.1)S(CFO@C/CZS)S-scheme photocatalyst with photothermal effect was synthesized by ultrasonic self-assembly combined with *** dark CFO@C absorbed visible light and partly converted into heat to promote the hydrogen evolution *** presence of heterojunctions inhibited the photogenerated electron-hole *** graphite-carbon layer provided a stable channel for electron transfer,and the presence of magnetic CFO made recycle *** the action of photothermal assistance and heterojunction,the hydrogen evolution rate of the optimal CFO@C/CZS was 80.79 mmol g^(-1) h^(-1),which was 2.55 times and 260.61 times of that of pure CZS and CFO@C,***,the composite samples also exhibit excellent stability and a wide range of environmental *** experimental tests and first-principles simulation calculation methods,the plausible mechanism of photoactivity enhancement was *** work provided a feasible strategy of photothermal assistance for the development of heterojunction photocatalysts with distinctive hydrogen evolution.

关键词： Photothermal effect S-scheme heterojunction Photocatalytic hydrogen evolution First-principles calculations

Photoluminescence Properties of NaLu1-xEux（WO4）2 Novel Red Phosphors Synthesized by Combustion Method

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环境科学前沿（中英文版） 2014年第1期3卷 1-5页

作者： Dafeng Zhang Jianxiu Liu xipeng pu School of Materials Science and Engineering Liaocheng University Liaocheng 252000 P. R. China

Coralline-like Ni_(2)P decorated novel tetrapod-bundle Cd_(0.9)Zn_(0.1)S ZB/WZ homojunctions for highly efficient visible-light photocatalytic hydrogen evolution

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Chinese Journal of Catalysis 2021年第3期42卷 439-449页

作者： Zhuwang Shao Xiao Meng Hong Lai Dafeng Zhang xipeng pu Changhua Su Hong Li Xiaozhen Ren Yanling Geng School of Materials Science and Engineering Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell TechnologyLiaocheng UniversityLiaocheng 252000ShandongChina State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina

In this study,Ni_(2)P-Cd_(0.9)Zn_(0.1)S(NPCZS)composites were synthesized by coupling tetrapod bundle Cd_(0.9)Zn_(0.1)S(CZS)and coralline-like Ni_(2)P(NP)via a simple calcination *** shows outstanding activity in photocatalytic hydrogen evolution(1.31 mmol h^(‒1)),owing to its unique morphology and heterophase homojunctions(ZB/WZ),which accelerate the separation and transfer of photogenerated *** coupling with NP,the photoactivity of NPCZS was enhanced,and the maximum hydrogen evolution rate of 1.88 mmol h^(‒1)was reached at a NP content of 12 wt%,which was 1.43 times higher than that of pure *** experimental results of the photocatalytic activity,*** spectra,surface photovoltage spectra,and electrochemical test showed that the enhanced photoactivity of NPCZS should be attributed to the synergistic effects of the novel tetrapod-bundle morphology,heterophase homojunctions,and decoration of the NP ***,the as-prepared NPCZS composites exhibited excellent photostability and ***,we propose a possible mechanism for the enhanced photocatalytic activity.

关键词： Photocatalytic hydrogen evolution Cd_(0.9)Zn_(0.1)S Ni_(2)P Homojunctions Noble-metal-free

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液相法制备无机纳米管的研究进展

化工新型材料 2012年第4期40卷 40-42页

作者：李红蒲锡鹏张大凤聊城大学材料科学与工程学院聊城252000

综述了水热(溶剂热)法、溶胶-凝胶法、微波辅助法和低温溶液法制备无机纳米管的最新研究进展。分析了影响纳米管形貌的因素及纳米管的形成机理,对纳米管的应用进行了展望。

关键词：无机纳米管形貌机理

氮化硅网眼多孔陶瓷的制备及性能：（Ⅱ）两次离心工艺制备

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材料导报 2005年第F11期19卷 389-391页

作者：蒲锡鹏张大凤刘学建聊城大学材料科学与工程学院聊城252059 中国科学院上海硅酸盐研究所上海200050

采用两次离心挂浆工艺制备出氮化硅网眼多孔陶瓷。与辊压法相比，用两次离心挂浆工艺制备的网眼多孔陶瓷的结构均匀性得到显著提高，抗弯强度提高了1倍左右：其相组成为β-Si3N4和O’Sialon，晶粒发育较完善。

关键词：氮化硅网眼多孔陶瓷两次离心挂浆工艺结构均匀性晶粒

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用于多孔陶瓷制备的有机模板处理工艺

材料导报 2007年第F05期21卷 241-243页

作者：蒲锡鹏张大凤贾丽萍聊城大学材料科学与工程学院聊城252059

以硅溶胶为表面改性剂,从提高与水基浆料的相容性、增加表面粗糙度入手,对有机模板进行了表面处理。对处理前后有机模板的表面形貌、力学性能及对涂覆量的影响进行了研究。结果表明,表面处理以后,有机模板更容易被水基浆料均匀涂覆,且... 详细信息

以硅溶胶为表面改性剂,从提高与水基浆料的相容性、增加表面粗糙度入手,对有机模板进行了表面处理。对处理前后有机模板的表面形貌、力学性能及对涂覆量的影响进行了研究。结果表明,表面处理以后,有机模板更容易被水基浆料均匀涂覆,且回弹力得到显著增强,涂覆量也得到显著提高。这将有利于多孔陶瓷内部缺陷的减少和强度的提高。

关键词：多孔陶瓷模板表面处理离心