贵金属纳米颗粒的光还原合成及光、电催化性能

光还原法能驱使助催化剂纳米颗粒的形成,并使其原位负载于催化剂的制氢活性中心,能够最大限度地提高催化剂的光催化制氢活性.利用贵金属光还原制备与形貌控制合成方法相结合的方式,初步探讨了贵金属助催化剂的光还原负载及形貌控制合成的可行性.以氯铂酸为原料,甲醇做牺牲剂,CdS作为基底,通过还原氯铂酸来制备不同形貌Pt纳米颗粒负载在CdS表面上.对所制得的Pt/CdS催化剂的光、电催化性能进行了测试,结果发现,加入PVP和NaI所制得的Pt/CdS催化剂催化活性最好.

Photoreducing Synthesis of Noble Metal Nanoparticles and Their Photocatalytic Properties

Light reduction method can drive cocatalyst nanoparticles forming in situ load on hydrogen production activity center to a greater extent to improve the catalyst activity of photocatalytic hydrogen production.Using precious metals photoreduction preparation and morphology control synthesis method,a combination of the light of the precious metal catalyst promoter reduction is discussed preliminarily,the feasibility of the load and morphology control synthesis is analyzed.With chloroplatinic acid as the raw material,methanol as sacrifice agent,CdS as a base,a reduction chloroplatinic acid preparation is conducted to different morphology Pt nanoparticles loaded on the surface of the CdS.And then the photocatalytic performance is tested.As a result,it is found that PVP and NaI is prepared by the Pt/CdS light catalyst activity are the best.