Photochemical preparation of Cd/CdS photocatalysts and their efficient photocatalytic hydrogen production under visible light irradiation
Photochemical preparation of Cd/CdS photocatalysts and their efficient photocatalytic hydrogen production under visible light irradiation
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Cd/CdS光催化剂的光化学制备及其可见光照射下高效光催化产氢
DOI：
10.1039/c3gc42466a
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发表时间：
2014-04
期刊：
影响因子：
9.8
通讯作者：
Wenfeng Shangguan
中科院分区：
文献类型：
--
作者：
Haohao Huang;Zhimin Li;Ziqiang Lei;Wenfeng Shangguan
金属镉可以作为负载在CdS上的助催化剂的类似物，以分离电子和空穴，显着提高CdS光催化制氢的效率。在模拟太阳光照射下，以CdSO 4和Na 2S 2 O3·5 H2O为原料，制备了一系列Cd/CdS光催化剂。Cd/CdS光催化剂的光催化活性比纯CdS有上级表现。当Na 2S 2 O3·5 H2O与镉盐的最佳摩尔比R为7时，它导致1753 μmol h−1的高平均H2-产生速率。在理论推测和实验观察的基础上提出了Cd/CdS的形成和光催化活性增强的可能机制。Cd/CdS催化剂的光催化活性得到了提高;在含镉溶液中加入Na 2S 2 O3·5 H2O制备的Cd/CdS催化剂能有效去除镉离子。
Metal Cd can serve as an analogue of cocatalysts loaded on CdS to separate electrons and holes to significantly enhance the efficiency of CdS photocatalytic hydrogen production. A series of Cd/CdS photocatalysts were synthesized at various molar ratios of CdSO4 and Na2S2O3·5H2O in the presence of simulated solar irradiation. Superior photocatalytic activities relative to that of pure CdS were observed on the Cd/CdS photocatalysts. When the optimal molar ratio R of Na2S2O3·5H2O to cadmium salt is 7, it results in a high average H2-production rate of 1753 μmol h−1. Possible mechanisms for both the formation and the enhanced photocatalytic activity of Cd/CdS were proposed on the basis of theoretical speculation and experimental observations. Most of all, this work highlights that (i) Cd/CdS leads to an improvement in the photocatalytic activity for H2 generation; and (ii) adding Na2S2O3·5H2O into the solution containing cadmium ions to prepare Cd/CdS can effectively remove cadmium ions.
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DOI：
10.1016/j.physe.2009.06.014
发表时间：
2009-10
影响因子：
3.3
作者：
Zinki Jindal;N. Verma
通讯作者：
Zinki Jindal;N. Verma
影响因子：
7.3
作者：
Yan, Hongjian;Yang, Jinhui;Li, Can
通讯作者：
Li, Can
影响因子：
11.4
作者：
Yu, Jiaguo;Yu, Xiaoxiao
通讯作者：
Yu, Xiaoxiao
影响因子：
7.2
作者：
N. Biswal;D. Das;Satyabadi Martha;K. Parida
通讯作者：
N. Biswal;D. Das;Satyabadi Martha;K. Parida
影响因子：
8.9
作者：
Jang, A;Seo, Y;Bishop, PL
通讯作者：
Bishop, PL