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Reverse-Type-I MnCo2S4/CdS Heterojunction Nanorods for Highly Efficient Photocatalytic Hydrogen Production under Visible Light Irradiation
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-09-11 , DOI: 10.1021/acsanm.3c03025
Yuye Cheng 1 , Minghao Dou 1 , Mengjie Yao 1 , Kai Ding 1 , Hongyu Shao 1 , Yang Liu 1 , Shenjie Li 1 , Yanyan Chen 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-09-11 , DOI: 10.1021/acsanm.3c03025
Yuye Cheng 1 , Minghao Dou 1 , Mengjie Yao 1 , Kai Ding 1 , Hongyu Shao 1 , Yang Liu 1 , Shenjie Li 1 , Yanyan Chen 1
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Photocatalytic hydrogen production has great potential as a way to obtain green and sustainable energy. In this work, MnCo2S4/CdS type-I nanorod heterojunctions were successfully constructed, and the stability of the structure and photocatalytic performance of the composites were significantly improved by the timely transfer of photogenerated holes on the valence band and photogenerated electrons on the conduction band of CdS through the discontinuous MnCo2S4 grown outside the nanorods. The photocatalytic hydrogen production of 5% loaded MnCo2S4/CdS under visible light (λ ≥ 420 nm) can reach 12 mmol·g–1·h–1, which is 42 times more efficient than the hydrogen production of pure CdS nanorods in the presence of Na2S and Na2SO3 as hole scavengers. In addition, the apparent quantum efficiency of the composite catalyst with the best hydrogen evolution activity can reach 11.73%. The construction of type-I semiconductor heterojunctions in this study offers valuable guidance for the preparation of CdS photocatalysts that exhibit superior stability and photocatalytic efficiency.
中文翻译：
反向I型MnCo2S4/CdS异质结纳米棒在可见光照射下高效光催化制氢
光催化制氢作为获取绿色和可持续能源的一种方式具有巨大的潜力。本工作成功构建了MnCo 2 S 4 /CdS I型纳米棒异质结，通过价带上光生空穴和价带上光生电子的及时转移，显着提高了复合材料的结构稳定性和光催化性能。 CdS 的导带穿过纳米棒外部生长的不连续的 MnCo 2 S 4 。5%负载量的MnCo 2 S 4 /CdS在可见光（λ≥420 nm）下光催化产氢可达12 mmol·g –1 ·h –1，在 Na 2 S 和 Na 2 SO 3作为空穴清除剂的情况下，其产氢效率比纯 CdS 纳米棒的产氢效率高 42 倍。此外，析氢活性最好的复合催化剂的表观量子效率可达11.73%。本研究中构建的 I 型半导体异质结为制备具有优异稳定性和光催化效率的 CdS 光催化剂提供了有价值的指导。
更新日期：2023-09-11
中文翻译：
反向I型MnCo2S4/CdS异质结纳米棒在可见光照射下高效光催化制氢
光催化制氢作为获取绿色和可持续能源的一种方式具有巨大的潜力。本工作成功构建了MnCo 2 S 4 /CdS I型纳米棒异质结，通过价带上光生空穴和价带上光生电子的及时转移，显着提高了复合材料的结构稳定性和光催化性能。 CdS 的导带穿过纳米棒外部生长的不连续的 MnCo 2 S 4 。5%负载量的MnCo 2 S 4 /CdS在可见光（λ≥420 nm）下光催化产氢可达12 mmol·g –1 ·h –1，在 Na 2 S 和 Na 2 SO 3作为空穴清除剂的情况下，其产氢效率比纯 CdS 纳米棒的产氢效率高 42 倍。此外，析氢活性最好的复合催化剂的表观量子效率可达11.73%。本研究中构建的 I 型半导体异质结为制备具有优异稳定性和光催化效率的 CdS 光催化剂提供了有价值的指导。
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