助催化剂Ni_(3)N负载Al掺杂SrTiO_(3)的合成及其光解水析氢应用  

Co-catalyst Ni_(3)N supported Al-doped SrTiO_(3):Synthesis and application to hydrogen evolution from photocatalytic water splitting

作　　者：杨茜 常春香 谢英鹏 李阳 陈昱辉 王博饶 伊鲁东 韩忠昊 YANG Xi;CHANG Chunxiang;XIE Yingpeng;LI Yang;CHEN Yuhui;WANG Borao;YI Ludong;HAN Zhonghao(College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Key Laboratory of Resources Chemicals and Materials,Ministry of Education,Shenyang 110142,China)

机构地区：[1]沈阳化工大学化学工程学院,沈阳110142 [2]资源化工与材料教育部重点实验室,沈阳110142

出　　处：《无机化学学报》2025年第3期440-452,共13页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金面上项目(No.22478252);国家自然科学基金区域创新联合基金(No.U21A20316);国家重点研发计划项目(No.2022YFF0705104);辽宁省自然科学基金联合基金计划(No.2021NLTS1210);辽宁兴辽英才计划青年拔尖人才(No.XLYC2007193);辽宁省博士科研启动基金(No.2022-BS-212)资助。

摘　　要：采用熔盐法制备出铝掺杂的钛酸锶(Al-SrTiO_(3)),并通过水热法及气相氮化法在Al-SrTiO_(3)表面紧密负载了Ni_(3)N助催化剂。通过对Ni_(3)N/Al-SrTiO_(3)体系载流子转移特性表征以及密度泛函理论计算分析发现,Al-SrTiO_(3)上的光生电子在费米能级差的作用下可快速转移到Ni_(3)N上,有效促进了Al-SrTiO_(3)上光生载流子的分离,从而提高其分解水析氢性能。光催化析氢测试结果表明,当Ni_(3)N助催化剂负载量(Ni与Al-SrTiO_(3)的质量比)为7%时,Al-SrTiO_(3)的析氢速率相对负载前提升了82倍。Al-doped SrTiO_(3)(Al-SrTiO_(3))was prepared by the molten salt method,and then the Ni_(3)N cocatalyst was loaded closely on the Al-SrTiO_(3)to obtain Ni_(3)N/Al-SrTiO_(3)material by hydrothermal and gas phase nitrization method.Through fluorescence,impedance,surface photovoltage testing as well as density functional theory calculations,it is found that the photogenerated electrons on Al-SrTiO_(3)can quickly transfer to Ni_(3)N under the effect of Fermi energy difference,effectively promoting the separation of photogenerated carriers on Al-SrTiO_(3) and improving the performance hydrogen evolution from water splitting.The photocatalytic hydrogen evolution test results showed that 7%Ni_(3)N/Al-SrTiO_(3) with a loading amount(a mass ratio of Ni to Al-SrTiO_(3)) of 7%had the highest hydrogen evolution rate,which was 82 times higher than that of Al-SrTiO_(3).

关 键 词：光催化 铝掺杂钛酸锶 Ni_(3)N 析氢反应 

分 类 号：O643.3[理学—物理化学]