高等学校化学学报2021，Vol.42Issue(5)：1581-1588,8.DOI:10.7503/cjcu20210035
超薄骨架有序介孔CdS/NiS的制备及光催化产氢性能
Ordered Mesoporous NiS-loaded CdS with Ultrathin Frameworks for Efficient Photocatalytic H2 Production
摘要
Abstract
An ordered mesoporous cadmium sulfide(CdS) photocatalyst has been synthesized through the nanocasting method using ordered mesoporous silica as hard template. The resultant ordered mesoporous CdS photocatalyst is constructed with gyroid ultrathin frameworks of ca. 5 nm and possesses a large specific surface area of 238 m2/g,which could efficiently reduce the migration distance of photo-generated charges from bulk to surface in photocatalysis and provide more active sites for photocatalytic reaction ,thus resulting an enhanced photocatalytic performance. Furthermore,nickel sulfide as a cocatalyst was loaded on the surface of ordered mesoporous CdS by the in?situ chemical deposition,resulting in a series of ordered mesoporous NiS-loaded CdS nanocomposite photocatalysts. Their photocatalytic performances for H2 production in water were evalua-ted under visible light irradiation(λ≥420 nm)and a high photocatalytic H2 evolution rate of 3.84 mmol?h-1?g-1 could be reached after loading an optimal amount of NiS,which is 17.5 times that(0.22 mmol?h-1?g-1)for com?mercial CdS after loading the same amount of NiS.关键词
介孔光催化剂/超薄骨架/硫化镉/硫化镍/产氢Key words
Mesoporous photocatalyst/Ultrathin framework/CdS/NiS/H2 production分类
化学化工引用本文复制引用
杨晓梅,吴强,郭茹,叶凯波,薛屏,王晓中,赖小勇..超薄骨架有序介孔CdS/NiS的制备及光催化产氢性能[J].高等学校化学学报,2021,42(5):1581-1588,8.基金项目
国家自然科学基金(批准号:52062043)资助.This paper is supported by the National Natural Science Foundation of China(No.52062043). （批准号:52062043）
