磷化镍修饰磷掺杂氧化镓可见光催化水分解产氢  

Nickel phosphide modified phosphorus doped gallium oxide for visible light photocatalytic water splitting to hydrogen

作　　者：杨博 吕功煊[1] 马建泰[3] YANG Bo;LÜGongxuan;MA Jiantai(State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,兰州730000 [2]中国科学院大学,北京100049 [3]兰州大学化学化工学院,兰州730000

出　　处：《无机化学学报》2024年第4期736-750,共15页Chinese Journal of Inorganic Chemistry

基　　金：科技部重点研发项目(No.2022YFB3803600);国家自然科学基金(No.22272189、22102200)资助。

摘　　要：以Ga_(2)O_(3)半导体为前驱体,用浸渍加低温磷化法制备了P掺杂Ga_(2)O_(3)表面修饰Ni_(2)P光催化剂(x-Ni_(2)P/Ga_(2)O_(3)-P_(y),x代表Ni^(2+)和Ga_(2)O_(3)的物质的量之比,y代表NaH_(2)PO·H_(2)O与Ga_(2)O_(3)的物质的量之比)。5%-Ni_(2)P/Ga_(2)O_(3)-P_(6)催化剂展现出在纯水中光催化析氢的高活性,在430 nm光照下的光量子效率为0.22%。机理研究结果表明Ni_(2)P修饰和P掺杂扩展了催化剂的光响应范围,同时提升了载流子分离迁移效率,其长周期光催化反应稳定性明显优于未磷化催化剂。Nickel phosphide(Ni_(2)P)modified phosphorus doped gallium oxide(Ga_(2)O_(3))(x-Ni_(2)P/Ga_(2)O_(3)-P_(y),x represents the molar ratio of Ni^(2+)and Ga_(2)O_(3),y represents the molar ratio of NaH_(2)PO·H_(2)O and Ga_(2)O_(3))photocatalyst was prepared by impregnation and low temperature phosphating method using Ga_(2)O_(3) semiconductor as a precursor.5%-Ni_(2)P/Ga_(2)O_(3)-P_(6) exhibits excellent photocatalytic hydrogen evolution activity in pure water and has a photo quantum efficiency of 0.22%under 430 nm monochromatic light irradiation.The mechanism study shows that phosphorus doping and Ni_(2)P cocatalyst modification extend the photo-response range and promote carrier separation and migration efficiency.The long-term photocatalytic stability is better than that of a non-phosphating catalyst.

关 键 词：氧化镓 磷掺杂 磷化镍 光催化产氢 

分 类 号：O613.62[理学—无机化学]