Synthesis of pure phase Mg_(1.2)Ti_(1.8)O_5 and MgTiO_3 nanocrystals for photocatalytic hydrogen production
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- 英文论文题名：Synthesis of pure phase Mg_(1.2)Ti_(1.8)O_5 and MgTiO_3 nanocrystals for photocatalytic hydrogen production
- 论文作者：Guofeng Wang ; Ning Zhang ; Yang Qu
- 英文论文作者：Guofeng Wang ; Ning Zhang ; Yang Qu ; School of Chemistry and Materials Science ; Heilongjiang University
- 年：2016
- 作者机构：School of Chemistry and Materials Science, Heilongjiang University;
- 英文论文关键词：Mg_(1.2)Ti_(1.8)O_5 ; MgTiO_3 ; photocatalysts ; nanocrystals
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十七分会：纳米催化
- 语种：英文
- 分类号：TQ116.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：109k
- 原文格式：D
- 会议级别：全国
摘要
Solar energy can convert into clean energy which can make use by human.Photocatalytic decomposition of water to generate hydrogen will be beneficial to solve the problem of the shortage for energy supply.~(1-3) So,people are actively exploring and synthesis of new nano/micro materials for photocatalytic reaction.Then,the enhanced photocatalytic activity could be attributed to the large surface area,fast photo-electrons transfer,higher carrier density and efficient charge separation which were proven by photoelectrochemical analysis such as liner sweep voltage,electrochemical impedance spectroscopy and Mott-Schottky plot.~(4-6) In here,we successfully synthesized pure phase Mg_(1.2)Ti_(1.8)O_5 and MgTiO_3 nanocrystals,using a hydrothermal method and a subsequent calcinaion in air.In comparison with pure MgTiO_3 nanocrystals,the resultant Mg_(1.2)Ti_(1.8)O_5 materials show an good photoresponse under UV light irradiation,exhibiting a high photocatalytic hydrogen evolution rate of 40 μ mol h~(-1),which is almost four times as high as that of MgTiO_3.
Solar energy can convert into clean energy which can make use by human.Photocatalytic decomposition of water to generate hydrogen will be beneficial to solve the problem of the shortage for energy supply.~(1-3) So,people are actively exploring and synthesis of new nano/micro materials for photocatalytic reaction.Then,the enhanced photocatalytic activity could be attributed to the large surface area,fast photo-electrons transfer,higher carrier density and efficient charge separation which were proven by photoelectrochemical analysis such as liner sweep voltage,electrochemical impedance spectroscopy and Mott-Schottky plot.~(4-6) In here,we successfully synthesized pure phase Mg_(1.2)Ti_(1.8)O_5 and MgTiO_3 nanocrystals,using a hydrothermal method and a subsequent calcinaion in air.In comparison with pure MgTiO_3 nanocrystals,the resultant Mg_(1.2)Ti_(1.8)O_5 materials show an good photoresponse under UV light irradiation,exhibiting a high photocatalytic hydrogen evolution rate of 40 μ mol h~(-1),which is almost four times as high as that of MgTiO_3.
Solar energy can convert into clean energy which can make use by human.Photocatalytic decomposition of water to generate hydrogen will be beneficial to solve the problem of the shortage for energy supply.~(1-3) So,people are actively exploring and synthesis of new nano/micro materials for photocatalytic reaction.Then,the enhanced photocatalytic activity could be attributed to the large surface area,fast photo-electrons transfer,higher carrier density and efficient charge separation which were proven by photoelectrochemical analysis such as liner sweep voltage,electrochemical impedance spectroscopy and Mott-Schottky plot.~(4-6) In here,we successfully synthesized pure phase Mg_(1.2)Ti_(1.8)O_5 and MgTiO_3 nanocrystals,using a hydrothermal method and a subsequent calcinaion in air.In comparison with pure MgTiO_3 nanocrystals,the resultant Mg_(1.2)Ti_(1.8)O_5 materials show an good photoresponse under UV light irradiation,exhibiting a high photocatalytic hydrogen evolution rate of 40 μ mol h~(-1),which is almost four times as high as that of MgTiO_3.
引文
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[4]Han,Q.;Zhao,F.;Hu,C.;Lv,L.;Zhang,Z.;Chen,N.;Qu,L.Nano Res.2015,8(5):1718.
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[2]Zhang,R.;Shen,D.;Xu,M.;Feng,D.;Li,W.;Zheng,G.;Elzatahry,A.;Zhao,D.Advanced Energy Materials.2014,4:1.
[3]Qu,Y.;Zhou,W.;Xie,Y.;Jiang,L.;Wang,J.;Tian,G.;Ren,Z.;Tian,C.;Fu,H.Chem.Commun.2013,49:8510.
[4]Han,Q.;Zhao,F.;Hu,C.;Lv,L.;Zhang,Z.;Chen,N.;Qu,L.Nano Res.2015,8(5):1718.
[5]Bai,S.;Wang,L.Chen,X.;Du,J.;Xiong,Y.Nano Res.2015,8(1):175.
[6]Castelli,I.;Landis,D.;Thygesen,K.;Dahl,S.;Chorkendorff,I.;Jaramillo,T.;Jacobsen,K.Energy Environ.Sci.2012,5:9034.