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热诱导金属/聚合物膜系图案化控制的研究 被引量:1
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作者 庄可 肖珂 +1 位作者 王国杰 江雷 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2004年第1期157-158,共2页
We described the appearance of complex, patterned structures induced by the buckling of metal thin films owing to thermal contraction on a polymer substrate. Polystyrene(PS) films with thickness of 100 μm were casted... We described the appearance of complex, patterned structures induced by the buckling of metal thin films owing to thermal contraction on a polymer substrate. Polystyrene(PS) films with thickness of 100 μm were casted onto a glass substrate, and the Pt thin films with thickness of 30 nm were deposited onto the polymer surface. The sample films were heated above the glass transition temperature of PS. After cooling to ambient temperature, the disordered wrinkles generated over the whole surface. When we ablated the top metal thin film by laser before heating the polymer, the disordered bucking wrinkles would transfer into ordered ridges pattern. This patterning process is arresting and potentially useful to fabricate optical devices such as diffraction gratings and optical sensors. 展开更多
关键词 热诱导 金属/聚合物 图案化 应力释放 激光刻蚀 聚苯乙烯
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金属与聚合物异种材料连接研究现状及发展 被引量:3
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作者 高吉成 董嘉辰 +1 位作者 裴启立 朱善清 《兵器材料科学与工程》 CAS CSCD 北大核心 2023年第2期137-145,共9页
金属/聚合物复合结构在保持较高力学性能的基础上可实现工程轻量化,实现金属/聚合物的高效连接具有重要的学术价值与实践意义。本文以金属/聚合物复合结构在工程轻量化中的应用为出发点,对胶接、机械连接与焊接在内的金属/聚合物连接技... 金属/聚合物复合结构在保持较高力学性能的基础上可实现工程轻量化,实现金属/聚合物的高效连接具有重要的学术价值与实践意义。本文以金属/聚合物复合结构在工程轻量化中的应用为出发点,对胶接、机械连接与焊接在内的金属/聚合物连接技术的特点进行分析,重点介绍了激光焊、感应焊、电阻焊、超声波焊、搅拌摩擦焊等焊接技术在金属/聚合物连接中的应用,阐述了金属/聚合物复合结构的连接机理,并对金属/聚合物复合结构连接技术的未来进行了展望。 展开更多
关键词 轻量化 金属/聚合物 连接技术 综述
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金属涂层/聚合物复合体系的结构—力学行为 被引量:3
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作者 贺江平 A.L.Volynskii 《材料导报》 EI CAS CSCD 2003年第7期54-56,共3页
在单向拉伸和平面压缩金属涂层/聚合物复合体系的条件下,在体系的表面形成周期性的微观结构。综述了对这种周期性表面微结构的特点及其形成机理的研究,并介绍了该理论在地壳表面形貌形成机理研究中的应用。
关键词 金属涂层/聚合物复合体系 微观结构 力学性质 应力分布
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金属与聚合物异种材料搅拌摩擦焊研究综述
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作者 韩梦洁 朱善清 +2 位作者 梅昕 雷驰宇 高吉成 《热加工工艺》 北大核心 2022年第21期12-18,共7页
金属/聚合物复合结构可以在满足性能要求的同时实现工程轻量化。搅拌摩擦焊接及其衍生技术由于其固态特性在金属/聚合物异种材料连接中受到越来越高的重视。本文归纳总结了金属/聚合物复合结构搅拌摩擦焊技术、微观组织、焊接工艺及连... 金属/聚合物复合结构可以在满足性能要求的同时实现工程轻量化。搅拌摩擦焊接及其衍生技术由于其固态特性在金属/聚合物异种材料连接中受到越来越高的重视。本文归纳总结了金属/聚合物复合结构搅拌摩擦焊技术、微观组织、焊接工艺及连接机理,并对金属/聚合物异种材料搅拌摩擦焊接的发展进行了展望。 展开更多
关键词 搅拌摩擦焊 金属/聚合物 连接机理
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局域表面等离子体共振辅助的金纳米棒/聚合物纳米复合材料的双光子聚合
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作者 张金龙 郑美玲 +4 位作者 金峰 董贤子 陈述 赵震声 段宣明 《影像科学与光化学》 CAS CSCD 北大核心 2014年第3期267-273,共7页
本文研究了金纳米棒的局域表面等离子体共振效应在双光子聚合过程中的作用,即当激发光与金纳米棒表面等离子体共振波长相匹配时,会在金纳米棒表面产生很强的局域电磁场,从而引发双光子聚合。通过采用与金纳米棒表面等离子体共振波长相... 本文研究了金纳米棒的局域表面等离子体共振效应在双光子聚合过程中的作用,即当激发光与金纳米棒表面等离子体共振波长相匹配时,会在金纳米棒表面产生很强的局域电磁场,从而引发双光子聚合。通过采用与金纳米棒表面等离子体共振波长相同的飞秒激光,在低于光刻胶聚合阈值的功率下照射舍有金纳米棒的光刻胶,制备聚合物包覆金纳米棒的纳米复合材料。透射电子显微镜结果表明,当飞秒激光功率为0.6 W、光斑直径为1.6 cm、照射时间为0.3 s时,金纳米棒表面成功聚合上厚度为5 nm左右的聚合物。本研究在制备聚合物/金属纳米粒子方面提供了一种简单可行的方法,有望在纳米光子学、纳米传感器等新兴领域得到应用。 展开更多
关键词 金纳米棒 飞秒激光 双光子聚合 金属/聚合物纳米复合材料
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聚合物热电复合材料的研究进展
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作者 孙甜 王家俊 +2 位作者 张艳萍 余丽萍 傅一波 《材料科学与工程学报》 CAS CSCD 北大核心 2018年第3期511-518,共8页
本文综述了碳纳米材料/聚合物、半导体合金/聚合物、金属纳米粒子/聚合物以及聚合物/聚合物等热电复合材料的研究进展。简要分析了热电复合材料的性能提升机理及现有材料尚存在的问题,并指出了聚合物热电复合材料今后的发展方向。
关键词 热电复合材料 碳纳米材料/聚合物 半导体合金/聚合物 金属纳米粒子/聚合物 聚合物/聚合物
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金属铜与聚苯酰亚胺表面相互作用的理论模拟 被引量:1
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作者 张秀斌 李泽生 +2 位作者 吕中元 于坤千 孙家钟 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2001年第12期2081-2084,共4页
利用分子力学模拟研究了单层金属铜在三层聚苯酰亚胺 ( PMDA-ODA)表面模型上的静态行为 .结果单层铜在 PMDA-ODA表面上形成了聚集体 .分析表明铜原子之间的内聚能大于铜与 PMDA-ODA表面之间的着附能 .在内聚能中范德华力起重要作用 ,而... 利用分子力学模拟研究了单层金属铜在三层聚苯酰亚胺 ( PMDA-ODA)表面模型上的静态行为 .结果单层铜在 PMDA-ODA表面上形成了聚集体 .分析表明铜原子之间的内聚能大于铜与 PMDA-ODA表面之间的着附能 .在内聚能中范德华力起重要作用 ,而在着附能中静电作用是决定因素 .通过分子动力学模拟研究了温度对铜与 展开更多
关键词 理论模拟 金属/聚合物界面 相互作用 聚苯酰亚胺 分子力学 内聚能 范德华力
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冲击载荷下(纤维/聚合物)-金属层合板的大挠度动力响应 被引量:1
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作者 李凯凯 张建勋 +4 位作者 张威 夏元明 李剑峰 沙振东 秦庆华 《复合材料学报》 EI CAS CSCD 北大核心 2020年第1期147-154,共8页
对冲击载荷下固支(纤维/聚合物)-金属层合方板和圆板的大挠度动力响应进行了理论研究。基于理想刚塑性假定和塑性极限屈服条件,建立了质量块体和爆炸冲击载荷下(纤维/聚合物)-金属层合板大挠度动力响应的理论模型,给出了固支(纤维/聚合... 对冲击载荷下固支(纤维/聚合物)-金属层合方板和圆板的大挠度动力响应进行了理论研究。基于理想刚塑性假定和塑性极限屈服条件,建立了质量块体和爆炸冲击载荷下(纤维/聚合物)-金属层合板大挠度动力响应的理论模型,给出了固支(纤维/聚合物)-金属层合方板和圆板考虑弯曲和拉伸相互作用的大挠度响应解析解,进一步忽略弯曲的影响,得到了其动力响应的膜力解。研究结果表明,理论预测与已有实验结果吻合较好,该理论模型可以有效地预测质量块体和爆炸冲击载荷下(纤维/聚合物)-金属层合板的最大挠度。 展开更多
关键词 (纤维/聚合物)-金属层合板 理想刚塑性模型 冲击载荷 动力响应 大挠度
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电化学阻抗谱在材料研究中的应用 被引量:40
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作者 王芸 汤滢 +1 位作者 谢长生 夏先平 《材料导报》 EI CAS CSCD 北大核心 2011年第13期5-9,共5页
电化学阻抗谱是电化学研究中的有效工具,在材料研究中有着广泛的应用。综述了电化学阻抗谱在金属材料、金属/聚合物复合材料、半导体材料以及其他材料中的应用。从电化学阻抗谱中可以获得材料的结构与性能的变化以及界面性质等信息,如... 电化学阻抗谱是电化学研究中的有效工具,在材料研究中有着广泛的应用。综述了电化学阻抗谱在金属材料、金属/聚合物复合材料、半导体材料以及其他材料中的应用。从电化学阻抗谱中可以获得材料的结构与性能的变化以及界面性质等信息,如金属材料中的电荷传递电阻、界面电容等参数,金属/聚合物复合材料中的涂层电容、涂层电阻等参数以及半导体材料中电子转移和复合性质。 展开更多
关键词 电化学阻抗谱 金属材料 金属/聚合物复合材料 半导体材料
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Novel synthesis metal 3-alkylthiophene copolymer
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作者 祁争健 冯卫东 +4 位作者 孙岳明 颜大志 肖英勃 何艳芳 虞婧 《Journal of Southeast University(English Edition)》 EI CAS 2007年第2期298-301,共4页
Copolymer, regiorandom and regioregular poly ( 3-octylthiophene )-co-poly ( 3-( 2-ethyl-1- hexylthiophene))(P3OTIOT) was synthesized by a FeCl3-oxidation and GRIM (grignard method) approach. The structure an... Copolymer, regiorandom and regioregular poly ( 3-octylthiophene )-co-poly ( 3-( 2-ethyl-1- hexylthiophene))(P3OTIOT) was synthesized by a FeCl3-oxidation and GRIM (grignard method) approach. The structure and optical properties were verified by the Fourier transform infrared, ultraviolet visible spectroscopy, NMR (nuclear magnetic resonance ), gel permeation chromatography (GPC) and photoluminescence (PL). The results indicate that the band-gap energy of the regioregular HT P3OTEHT was lower than that of the regiorandom copolymer and both of them depict low band-gap energy, high photoluminescence quantum yield, excellent solubility and processability, and might be promising polymer materials for applications in polymer light-emitting diodes, light-emitting electrochemical cells and polymer solar cells, etc. 展开更多
关键词 3-alkylthiophene COPOLYMER synthesis metal
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STUDY ON DEGRADATION OF LDPE CATALYZED BY MULTI-VALENCE METALLIC ORGANIC COMPOUNDS AT COMPOST TEMPERATURE
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作者 于九皋 陈崧哲 《Transactions of Tianjin University》 EI CAS 2001年第4期290-293,共4页
The catalytic effects of the organic compounds of iron,tin and manganese on the degradation of low density polyethylene (LDPE) at compost temperature are discussed.A series of samples were aged in a simulating compost... The catalytic effects of the organic compounds of iron,tin and manganese on the degradation of low density polyethylene (LDPE) at compost temperature are discussed.A series of samples were aged in a simulating compost environment.The mechanical properties,viscosity average molecular weight (M η) of PE and hydroperoxide (POOH) concentration in the samples were measured.FT IR and DSC were also applied to characterize some samples.It was shown that the above mentioned metallic organic compounds can catalyze the degradation of LDPE efficiently.After 2 months aging,all samples with catalysts became fragile and the M η of the material decreased dramatically.Furthermore,the concentration of carbonyl and the degree of crystallinity of the material increased with the aging time. 展开更多
关键词 polyethylene multi valence metallic organic compound COMPOST DEGRADATION HYDROPEROXIDE
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PE/CaCO_3-nanocomposites synthesized by in-situ polymerization 被引量:3
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作者 SCHARLACH Katrin KAMINSKY Walter 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第7期987-990,共4页
Polyethylene-nanocomposites with CaCO3-weight fractions from 0 to 15 wt.% were prepared by in-situ polymerization with Me2Si(Ind)2ZrC12/MAO metallocene catalysts. A high activity especially in the presence of TIBA w... Polyethylene-nanocomposites with CaCO3-weight fractions from 0 to 15 wt.% were prepared by in-situ polymerization with Me2Si(Ind)2ZrC12/MAO metallocene catalysts. A high activity especially in the presence of TIBA was observed. The morphology was investigated by using raster electron microscopy (REM) showing that the CaCO3-nanoparticles are uniformly distributed. The melting temperatures and the crystallization temperatures are not much influenced by increasing filler content. 展开更多
关键词 NANOCOMPOSITES CACO3 POLYETHYLENE Metallocene catalysts
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Transition metal catalysis in lithium‐ion batteries studied by operando magnetometry 被引量:1
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作者 Xiangkun Li Zhaohui Li +7 位作者 Yan Liu Hengjun Liu Zhiqiang Zhao Ying Zheng Linyuan Chen Wanneng Ye Hongsen Li Qiang Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2022年第1期158-166,共9页
Owing to the potential ability of metal nanoparticles to enhance the performance of energy storage devices,their catalytic performance has been studied by many researchers.However,a limited number of suitable characte... Owing to the potential ability of metal nanoparticles to enhance the performance of energy storage devices,their catalytic performance has been studied by many researchers.However,a limited number of suitable characterization techniques does not allow fully elucidating their catalytic mechanism.Herein,high‐accuracy operando magnetometry is employed to investigate the catalytic properties of a cobalt oxide electrode for lithium‐ion batteries fabricated by magnetron sputtering.Using this technique,the magnetic responses generated by the Co‐catalyzed reversible formation and decomposition of a polymer/gel‐like film are successfully detected.A series of CoO/Co films are prepared by magnetron sputtering in different environments at various sputtering times to study the influence of Co content and film thickness on their catalytic properties.It is clearly demonstrated that increasing the Co content enhances the magnetic signal associated with the catalysis process.Furthermore,decreasing the electrode thickness increases the area affected by the catalytic reactions,which in turn enhances the corresponding magnetic responses.The obtained results experimentally confirm the catalytic activity of Co metal nanoparticles and provide a scientific guidance for designing advanced energy storage devices.This work also shows that operando magnetometry is a versatile technique for studying the catalytic effects of transition metals. 展开更多
关键词 Transition metals Catalytic performance Polymer/gel-like film Lithium-ion batteries Operando magnetometry
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Ionic polymer metal composites actuators with enhanced driving performance by incorporating graphene quantum dots 被引量:1
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作者 YIN Guo-xiao HE Qing-song +2 位作者 YU Min WU Yu-wei XU Xian-rui 《Journal of Central South University》 SCIE EI CAS CSCD 2022年第5期1412-1422,共11页
In order to further improve the driving performance of ionic polymer metal composites(IPMCs),Nafion/graphene quantum dots(GQDs)hybrid membranes incorporating GQDs with various contents of 0,0.1 wt.%,0.5 wt.%,1.0 wt.%,... In order to further improve the driving performance of ionic polymer metal composites(IPMCs),Nafion/graphene quantum dots(GQDs)hybrid membranes incorporating GQDs with various contents of 0,0.1 wt.%,0.5 wt.%,1.0 wt.%,2.0 wt.%and 4.0 wt.%were fabricated by solution casting,and then IPMCs were manufactured by electroless plating.The water contents and elastic moduli of the hybrid membranes were tested.The morphology characteristics of the hybrid membranes and the IPMCs were observed,and the current,AC impedance,blocking force and displacement of the IPMCs were measured.The results show that the elastic modulus of the hybrid membranes decreases,the water content increases,and the actuation performance of the IPMCs improves significantly after the addition of GQDs.IPMC with 1.0 wt.%GQDs exhibits the best driving property.Compared with the IPMC without GQDs,the working current,ion conductivity,blocking force,and tip displacement increase by 94.67%,311.11%,53.66%,and 66.07%,respectively.These results lay a solid foundation for the preparation of IPMCs with high performance,and further broaden their applications in biomedical devices and bionic robots. 展开更多
关键词 graphene quantum dots hybrid membrane ionic polymer metal composites actuation performance
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Constitutive relationship of ionic polymer-metal composite and static response character of its cantilever setup to voltage 被引量:1
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作者 唐华平 聂拓 +3 位作者 唐运军 殷陈峰 唐春喜 王桥医 《Journal of Central South University of Technology》 EI 2008年第3期387-391,共5页
As a new ionic polymer-metal composite(IPMC) for artificial muscle,the mechanical performance parameters and the relationship between the deformation and the electrical parameters of the IPMC were studied. With the di... As a new ionic polymer-metal composite(IPMC) for artificial muscle,the mechanical performance parameters and the relationship between the deformation and the electrical parameters of the IPMC were studied. With the digital speckle correlation method,the constitutive relationship of the IPMC was confirmed. With non-contact photography measurement,a cantilever setup was designed to confirm the relationship between the deformation of the IPMC film and the applied voltage. The relationship curve of tip displacement of the IPMC cantilever setup vs the voltage was achieved. The results indicate that the IPMC is isotropic,its elastic modulus is 232 MPa and Poisson ratio is 0.163. The curve achieved from the test of the tip displacement of the IPMC cantilever setup shows that the tip displacement reaches the maximum when the stimulated voltage is 5 V. And the tip displacement descends largely when the frequency of the applied voltage is between 30 mHz and 100 mHz. 展开更多
关键词 constitutive relationship ionic polymer-metal composite(IPMC) cantilever setup static response
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Gold-loaded graphene oxide/PDPB composites for the synchronous removal of Cr(Ⅵ) and phenol 被引量:3
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作者 Jun Liu Wenzhang Fang +2 位作者 Yuhang Wang Mingyang Xing Mingyang Xing 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第1期8-15,共8页
The construction of novel inorganic‐organic hybrid nanomaterials for synchronous photocatalyticremoval of heavy metal ions and organic pollutants has received significant attention.We successfullysynthesized gold‐lo... The construction of novel inorganic‐organic hybrid nanomaterials for synchronous photocatalyticremoval of heavy metal ions and organic pollutants has received significant attention.We successfullysynthesized gold‐loaded graphene oxide/PDPB(polymer poly(diphenylbutadiyne))composites(Au‐GO/PDPB)through a facile mechanical agitation and photoreduction method.The compositeswere characterized by XPS and TEM images,which confirmed the presence of GO and Au nanoparticleson the PDPB.The as‐prepared Au‐GO/PDPB composites displayed enhanced photocatalytic activity compared with that of pure PDPB for the synchronous photoreduction of hexavalent chromium(Cr(VI))and photo‐oxidation of phenol.We also determined the optimal loading mass of GO and Au nanoparticles on the PDPB;the Au1‐GO2/PDPB(2.0wt%GO and1.0wt%Au)composite displayed the best photocatalytic activity among all the catalysts.Our study provides a facile way to prepare inorganic‐organic composites for the synchronous photocatalytic removal of heavy metal ions and organic pollutants.?2018,Dalian Institute of Chemical Physics,Chinese Academy of Sciences.Published by Elsevier B.V.All rights reserved. 展开更多
关键词 PHOTOCATALYSIS Heavy metal ion Organic pollutant Polymer poly(diphenylbutadiyne) Synchronous removal
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Synthesis and Crystal Structure of the Polyoxometalatebased Complex [Mn(DMSO)_5H_2O]_2SiMo_(12)O_(40)
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作者 牛景杨 段显英 +1 位作者 王敬平 吴强 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第3期257-261,共5页
A polyoxometalate-based complex [Mn(DMSO)5H2O]2SiMo12O40 has been synthe- sized and it crystallizes in triclinic, space group P with a = 11.863(2), b = 12.750(3), c = 13.255(3) , a = 83.62(3), b = 69.46(3), g = 87.14(... A polyoxometalate-based complex [Mn(DMSO)5H2O]2SiMo12O40 has been synthe- sized and it crystallizes in triclinic, space group P with a = 11.863(2), b = 12.750(3), c = 13.255(3) , a = 83.62(3), b = 69.46(3), g = 87.14(3), V = 1865.6(6) 3, Dc = 2.445 g/cm3, Z = 1, ?= 2.660 mm-1, Mr = 2746.56, F(000) = 1328, R = 0.0569, wR = 0.1190 and GOF = 1.125. The results of X-ray crystal analysis and IR spectrum show that there exists strong interaction between the heteropolyanions [SiMo12O40]4- and coordination cations [Mn(DMSO)5H2O]2+ in solid state. 展开更多
关键词 POLYOXOMETALATE Keggin structure crystal structure organic-inorganic complex
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Preparation and adsorption behaviors of Cu(Ⅱ) ion-imprinted polymers
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作者 钟世安 《Journal of Chongqing University》 CAS 2008年第1期23-27,共5页
Imprinted polymers were prepared for selective removal of Cu(Ⅱ) ions from metal solutions. Three ion-imprinted polymers were synthesized with methacrylic acid (MAA), acrylamide (AA) and N,N'-methylenebisacryla... Imprinted polymers were prepared for selective removal of Cu(Ⅱ) ions from metal solutions. Three ion-imprinted polymers were synthesized with methacrylic acid (MAA), acrylamide (AA) and N,N'-methylenebisacrylamide (MBAA) respectively as the functional monomers, ethleneglycoldimethacrylate (EGDMA) as the cross-linking agent, 2,2'- azobisisobutyronitrile (AIBN) as the initiator and Cu (Ⅱ) ion as the imprint ion. The template Cu (Ⅱ) ion was removed from the polymer by leaching with a liquid of a 1:1 volumetric ratio of HCl to ethylenediaminetetraacetic acid (EDTA). The capacity and selectivity of Cu(Ⅱ) ion adsorption were investigated with the three imprinted polymers and their non-imprinted counterparts. The polymers have a maximum adsorption capacity at pH 7.0. The isotherm of their batch adsorption of Cu(Ⅱ) ions shows a Langmuir adsorption pattern. Imprinted polymers all have a much higher capacity and higher selectivity of Cu(Ⅱ) adsorption than nonimprinted ones. MAA polymer benefits the most from imprinting. Imprinted MAA polymer has the highest selectivity when used to rebind Cu (Ⅱ) ion from an aqueous solution in the presence of other metal ions. Ion imprinting can be a promising technique of preparing selective adsorbents to separate and preconcentrate metal in a medium of multiple competitive metal ions through solid phase extraction (SPE). 展开更多
关键词 molecular recognition COMPLEXATION metal ion imprinted polymer PRECONCENTRATION solid phase extraction atomic absorption spectrometry copper ion selective adsorption
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Preparation and Aqueous Recognition of Metal Complex Imprinted Polymer Using N-vinyl-2-pyrrolidone as Functional Monomer 被引量:2
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作者 王学军 许振良 +1 位作者 邴乃慈 杨座国 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2007年第4期595-599,共5页
Using nickel(II) acetate.-2,2'-dipyridyl complex as template and N-vinyl-2-pyrrolidone (NVP) as coordinate functional monomer,.a new kind of metal-compiexing template molecularly impnnted polymer (MIP) was prep... Using nickel(II) acetate.-2,2'-dipyridyl complex as template and N-vinyl-2-pyrrolidone (NVP) as coordinate functional monomer,.a new kind of metal-compiexing template molecularly impnnted polymer (MIP) was prepared..The results of equilibri.um binding experiments in. aqueous solution showed that the MIP had higher'binding capacity for nickel( II )-2,2'-dipyridyl than the non-imprinted polymer with the same chemical composition. Theinfluences of metal ions and pHof solution on the recognition performance of MIP were investigated. The bindingcharacteristics of MIP were evaluated by the Scatchard analysis with one-site and two-site binding equations, respectively. The results on substrate selectivity of imprinted polymer revealed that MIP had better binding affinityfor template among thetested compounds. 展开更多
关键词 molecularly imprinted polymer metal complex Scatchard plot recognition in water
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In situ One-Pot Fabrication of MoO3-x Clusters Modified Polymer Carbon Nitride for Enhanced Photocatalytic Hydrogen Evolution
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作者 Rong-jie Qi Jun-ying Liu +3 位作者 Zhi-dong Wei Wei-qi Guo Zhi Jiang Wen-feng Shangguan 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2020年第4期491-499,I0002,共10页
Developing low-cost and high-efficient noble-metal-free cocatalysts has been a challenge to achieve economic hydrogen production.In this work,molybdenum oxides(MoO3-x)were in situ loaded on polymer carbon nitride(PCN)... Developing low-cost and high-efficient noble-metal-free cocatalysts has been a challenge to achieve economic hydrogen production.In this work,molybdenum oxides(MoO3-x)were in situ loaded on polymer carbon nitride(PCN)via a simple one-pot impregnation-calcination approach.Different from post-impregnation method,intimate coupling interface between high-dispersed ultra-small MoO3-xnanocrystal and PCN was successfully formed during the in situ growth process.The MoO3-x-PCN-X(X=1,2,3,4)photocatalyst without noble platinum(Pt)finally exhibited enhanced photocatalytic hydrogen performance under visible light irradiation(λ>420 nm),with the highest hydrogen evolution rate of 15.6μmol/h,which was more than 3 times that of bulk PCN.Detailed structure-performance revealed that such improvement in visible-light hydrogen production activity originated from the intimate interfacial interaction between high-dispersed ultra-small MoO3-xnanocrystal and polymer carbon nitride as well as efficient charge carriers transfer brought by Schottky junction formed. 展开更多
关键词 Noble-metal-free cocatalyst Polymer carbon nitride MoO3-xclusters Schottky junction Photocatalytic hydrogen production
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