聚乙烯醇对光还原Ni^(2+)制备纳米Ni性能及染料敏化制氢的影响  

Effect of Polyvinyl Alcohol on Performance of Ni Nanoparticles Prepared by Photoreduction of Ni^(2+) and Its Dye-sensitized Photocatalytic Hydrogen Production

作　　者：黄振星[1] 李亚飞[1] 李越湘[1] 彭绍琴[1] 

机构地区：[1]南昌大学化学系,江西南昌330031

出　　处：《分子催化》2017年第2期181-187,共7页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金资助(21163012;21563019);江西省教育厅科技项目(GJJ13065);江西省自然科学基金资助(20151BAB203013);化工资源有效利用国家重点实验室开放基金(CRE-2016-C-102)资助~~

摘　　要：采用染料曙红-Y(EY)作为敏化剂将Ni^(2+)光还原制备纳米Ni.在该反应体系中,不加入PVA时,光还原所得到的纳米Ni为球状粒子;而加入PVA,由于其模板导向作用,多数纳米镍呈现棒状.吸附在Ni表面的PVA能够促进光生电子从EY向棒状镍转移,从而提高其染料敏化制氢的活性和稳定性.Ni nanoparticles were fabricated by photoreduction of Ni2＋ using dye eosin-Y as a sensitizer. In this reac- tion system, in the absence of PVA sphere-like Ni nanoparticles were obtained by the photoreduction; whereas in the presence of PVA, due to its template guiding role, the prepared Ni nanoparticles showed rod-like morphology. The PVA adsorbed on rod-like Ni nanoparticles can promote the transfer of photoinduced electrons from eosin-Y to Ni, leading to increase of the activity and stability of the dye-sensitized photocatalytic hydrogen production.

关 键 词：纳米镍 聚乙烯醇 染料敏化 制氢 

分 类 号：O643.32[理学—物理化学]