Three-dimensional self-attaching perovskite quantum dots/polymer platform for efficient solar-driven CO2 reduction
Three-dimensional self-attaching perovskite quantum dots/polymer platform for efficient solar-driven CO2 reduction
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DOI：
10.1016/j.mtphys.2021.100358
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发表时间：
2021-01
影响因子：
11.5
通讯作者：
R. Cheng;Chih‐Chun Chung;S. Wang;B. Cao;M. Zhang;C. Chen;Z. Wang;M. Chen;S. Shen;Shiyu Feng
中科院分区：
文献类型：
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作者：
R. Cheng;Chih‐Chun Chung;S. Wang;B. Cao;M. Zhang;C. Chen;Z. Wang;M. Chen;S. Shen;Shiyu Feng
一个设计良好的支架，允许纳米光催化剂充分暴露于反应物是同样重要的有效的催化剂材料在实现高性能的光催化反应。在这项工作中，我们开发了一种三维（3D）带隙可调的钙钛矿量子点（PQDs）/聚醚砜（PES）单片膜，以最大限度地提高比表面积和增强光捕获，从而充分利用PQDs在太阳能驱动的CO2减排。PQD以最小的团聚和聚集静电自附着到3D PES支架，使得其可以完全暴露于气态反应物并维持其优越的上级高表面积/体积比。通过组成工程，小带隙富I CsPbIxBr 3-xPQD沿着三维PES支架实现了64.90 μmol g−1h−1的高电子消耗速率，超过了所有已报道的基于PQD的单一光催化剂在CO2光还原中的表现。我们的工作提供了一个新的平台，通过构建3D纳米催化剂/聚合物膜来充分利用钙钛矿纳米材料进行高效的光催化反应。
A well-designed scaffold that allows the full exposure of nanophotocatalyst to reactants is equally important with an efficient catalyst material in realizing a high-performance photocatalytic reaction. In this work, we develop a three-dimensional (3D) bandgap tunable perovskite quantum dots (PQDs)/polyethersulfone (PES) monolithic film to maximize the specific area and enhance light harvesting, thereby making full use of PQDs in solar-driven CO2reduction. The PQDs are electrostatically self-attached to the 3D PES scaffold with minimal agglomeration and clustering so that can be fully exposed to gaseous reactant and sustaining its superior high surface/volume ratio. Through composition engineering, the small-bandgap I-rich CsPbIxBr3-xPQDs along with the 3D PES scaffold achieve a high electron consumption rate of 64.90 μmol g−1h−1, exceeding all the reported PQD-based single photocatalysts in CO2photoreduction. Our work provides a new platform to fully exploit the perovskite nanomaterials by constructing 3D nanocatalyst/polymer film for highly efficient photocatalytic reactions.