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Significantly Enhanced Photocatalytic Hydrogen Generation over a 2D/2D Z-Scheme La2NiO4/g-C3N4 Hybrid Free of Noble Metal Cocatalyst
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-09-21 , DOI: 10.1021/acsaem.1c01716 Xinyu Ma 1 , Bing Luo 2 , Zilong Zeng 1 , Songwei Hu 1 , Dengwei Jing 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-09-21 , DOI: 10.1021/acsaem.1c01716 Xinyu Ma 1 , Bing Luo 2 , Zilong Zeng 1 , Songwei Hu 1 , Dengwei Jing 1
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A 2D/2D Z-scheme La2NiO4/g-C3N4 heterojunction was favorably created with a 2D La2NiO4 perovskite and g-C3N4 nanosheet through a calcination route. Notably, the photocatalytic activities of all La2NiO4/g-C3N4 hybrids can be found to have effectively increased over that of pure La2NiO4 or g-C3N4 especially when a noble metal was not used as a cocatalyst. Particularly, when the mass fraction of La2NiO4 was 3 wt %, the photocatalytic hydrogen generation rate of the La2NiO4/g-C3N4 composite was the highest, which was 53.8 and 43.9 times that of bare La2NiO4 and g-C3N4, respectively. The Z-scheme heterojunction was found to effectively improve the catalytic ability by enhancing the photoinduced charge carrier migration efficiency, as well as both the oxidation and reduction capabilities. Our work should be of value for designing highly efficient and visible light-responsive heterojunction photocatalysts free of the noble metal cocatalysts.
中文翻译：
在不含贵金属助催化剂的 2D/2D Z-Scheme La2NiO4/g-C3N4 杂化物上显着增强光催化制氢
2D/2D Z-scheme La 2 NiO 4 /gC 3 N 4异质结通过煅烧途径与2D La 2 NiO 4钙钛矿和gC 3 N 4纳米片有利地产生。值得注意的是，可以发现所有 La 2 NiO 4 /gC 3 N 4杂化物的光催化活性比纯 La 2 NiO 4或 gC 3 N 4的光催化活性有效提高，尤其是当不使用贵金属作为助催化剂时。特别是当 La 2 NiO的质量分数为4为3wt%，La 2 NiO 4 /gC 3 N 4复合材料的光催化产氢率最高，分别是裸La 2 NiO 4和gC 3 N 4 的53.8倍和43.9倍。发现 Z 型异质结通过提高光诱导载流子迁移效率以及氧化和还原能力来有效提高催化能力。我们的工作对于设计不含贵金属助催化剂的高效可见光响应异质结光催化剂具有重要价值。
更新日期：2021-10-25
中文翻译：
在不含贵金属助催化剂的 2D/2D Z-Scheme La2NiO4/g-C3N4 杂化物上显着增强光催化制氢
2D/2D Z-scheme La 2 NiO 4 /gC 3 N 4异质结通过煅烧途径与2D La 2 NiO 4钙钛矿和gC 3 N 4纳米片有利地产生。值得注意的是，可以发现所有 La 2 NiO 4 /gC 3 N 4杂化物的光催化活性比纯 La 2 NiO 4或 gC 3 N 4的光催化活性有效提高，尤其是当不使用贵金属作为助催化剂时。特别是当 La 2 NiO的质量分数为4为3wt%，La 2 NiO 4 /gC 3 N 4复合材料的光催化产氢率最高，分别是裸La 2 NiO 4和gC 3 N 4 的53.8倍和43.9倍。发现 Z 型异质结通过提高光诱导载流子迁移效率以及氧化和还原能力来有效提高催化能力。我们的工作对于设计不含贵金属助催化剂的高效可见光响应异质结光催化剂具有重要价值。
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