镧改性石墨相氮化碳光催化剂在太阳能-氢转换过程中的应用研究

郭安祥, 王若谷, 戴立森, 董拓

化工新型材料 ›› 2019, Vol. 47 ›› Issue (2) : 112 -115.

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化工新型材料 ›› 2019, Vol. 47 ›› Issue (2) : 112-115.
新材料与新技术

镧改性石墨相氮化碳光催化剂在太阳能-氢转换过程中的应用研究

    郭安祥, 王若谷, 戴立森, 董拓
作者信息 +

Study on applition of La-g-C3N4 photocatalyst in solar-hydrogen conversion

  • Guo Anxiang, Wang Ruogu, Dai Lisen, Dong Tuo
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摘要

以四水合醋酸镧[La(CH3COO)3·4H2O]和三聚氰胺(C3H6N6)分别作为镧(La)和石墨相氮化碳(g-C3N4)的前驱体材料,通过简易的一锅热解的方法制备了La改性的石墨相氮化碳(La-g-C3N4)光催化剂。研究结果表明:所得光催化剂的可见光催化产氢活性与原始g-C3N4相比有明显改善,在La(CH3COO)3·4H2O用量为0.5%(是C3H6N6用量的摩尔百分数)条件下,制得的La-g-C3N4在6h内的产氢量达到575μmol/gcat,是原始g-C3N4的2.15倍。

Abstract

Lanthanum-modified graphitic carbon nitride (La-g-C3N4) photocatalysts were prepared via a facile one-pot pyrolysis method,lanthanum acetate tetrahydrate [La(CH3COO)3·4H2O] and melamine (C3H6N6) used as the precursors of lanthanum (La) and graphitic carbon nitride (g-C3N4) respectively.The obtained samples showed enhanced visible-light-driven photocatalytic H2-evolution activities compared to g-C3N4,and when the molar ratios of La(CH3COO)3·4H2O to C3H6N6 was 0.5%,H2-evolution rate on La-g-C3N4 reached 575μmol/gcat in 6 hours,which was 2.15 times that on pristine g-C3N4.

关键词

光催化 / 产氢 / 石墨相氮化碳 / 镧系金属 / 可见光

Key words

photocatalysis / hydrogen production / graphitic carbon nitride / lanthanide / visible light

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镧改性石墨相氮化碳光催化剂在太阳能-氢转换过程中的应用研究[J]. 化工新型材料, 2019, 47(2): 112-115 DOI:

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