A photocatalyst foam for superior visible-light photocatalytic hydrogen evolution,Sustainable Energy & Fuels

当前位置： X-MOL 学术 › Sustain. Energy Fuels › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A photocatalyst foam for superior visible-light photocatalytic hydrogen evolution
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2021-08-23 , DOI: 10.1039/d1se00934f
Zhaoting Liu _{1,

2,

3} , Fang Wang _{1,

2,

3} , Zhengguo Zhang _{1,

2,

3} , Shixiong Min _{1,

2,

3}

Affiliation

A photocatalyst foam is developed by growing high-density CdS microspheres on Ni₂P nanolayer-modified Ni foam (NF) (termed CdS/NF–P) for efficient visible-light-driven photocatalytic H₂ evolution. The in situ grown Ni₂P thin layer on NF not only provides a large number of anchoring sites for the growth of high-density CdS microspheres for enhancing the visible light capture ability, but also offers active sites for catalyzing the H₂ evolution reaction (HER). Meanwhile, the multiple heterojunction interfaces formed among NF, Ni₂P, and CdS can greatly promote the separation of photogenerated electrons and holes. As a consequence, the CdS/NF–P photocatalyst foam exhibits good photocatalytic H₂ evolution activity under visible light irradiation. The H₂ evolution rate reaches 4.82 mmol h⁻¹ g_CdS⁻¹ over the best CdS/NF–P photocatalyst foam, which is about five times that of CdS particles suspended in the reaction solution. More attractively, the photocatalyst foam can be easily recovered and recycled in the reaction solution by simple magnetic separation. In addition, the structural integrity makes the photocatalyst foam highly stable in the photocatalytic HER for 35 h. This work provides a new strategy for the design of efficient and practical photocatalyst foams that are easy to prepare on a large scale and compatible with device manufacturing for large-scale photochemical energy conversion.

中文翻译：

一种用于卓越可见光光催化析氢的光催化剂泡沫

通过在 Ni ₂ P 纳米层改性泡沫镍 (NF)（称为 CdS/NF-P）上生长高密度 CdS 微球，开发了一种光催化剂泡沫，用于有效的可见光驱动光催化 H ₂析出。在原位生长的Ni ₂上NF P薄层不仅提供了大量的锚定位点用于高密度的CdS微球的生长的用于增强可见光捕获能力，而且还提供了用于催化为H活性位点₂析出反应（她）。同时，NF、Ni ₂之间形成多个异质结界面P、CdS 可以极大地促进光生电子和空穴的分离。其结果是，在CdS / NF-P的光催化剂泡沫显示良好的光催化ħ ₂可见光照射下进化活性。H ₂析出率达到4.82 mmol h ^-1 g _CdS^-1超过最好的 CdS/NF-P 光催化剂泡沫，大约是悬浮在反应溶液中的 CdS 颗粒的 5 倍。更吸引人的是，光触媒泡沫可以通过简单的磁分离很容易地在反应溶液中回收和再循环。此外，结构完整性使光催化剂泡沫在光催化 HER 中高度稳定 35 小时。这项工作为设计高效实用的光催化剂泡沫提供了一种新策略，这些泡沫易于大规模制备并与用于大规模光化学能量转换的装置制造兼容。

更新日期：2021-09-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文