Details

Autor(en) / Beteiligte

• Guo, Weihua
• Zhang, Yuefeng
• Su, Jianjun
• Song, Yun
• Huang, Libei
• Cheng, Le
• Cao, Xiaohu
• Dou, Yubing
• Ma, Yangbo
• Ma, Chenyan
• Zhu, He
• Zheng, Tingting
• Wang, Zhaoyu
• Li, Hao
• Fan, Zhanxi
• Liu, Qi
• Zeng, Zhiyuan
• Dong, Juncai
• Xia, Chuan
• Tang, Ben Zhong
• Ye, Ruquan

Titel

Transient Solid-State Laser Activation of Indium for High-Performance Reduction of CO 2 to Formate

Ist Teil von

• Small (Weinheim an der Bergstrasse, Germany), 2022-06, Vol.18 (24), p.e2201311

Ort / Verlag

Germany

Erscheinungsjahr

2022

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Deficiencies in understanding the local environment of active sites and limited synthetic skills challenge the delivery of industrially-relevant current densities with low overpotentials and high selectivity for CO reduction. Here, a transient laser induction of metal salts can stimulate extreme conditions and rapid kinetics to produce defect-rich indium nanoparticles (L-In) is reported. Atomic-resolution microscopy and X-ray absorption disclose the highly defective and undercoordinated local environment in L-In. In a flow cell, L-In shows a very small onset overpotential of ≈92 mV and delivers a current density of ≈360 mA cm with a formate Faradaic efficiency of 98% at a low potential of -0.62 V versus RHE. The formation rate of formate reaches up to 6364.4 µmol h , which is nearly 39 folds higher than that of commercial In (160.7 µmol h ), outperforming most of the previous results that have been reported under KHCO environments. Density function theory calculations suggest that the defects facilitate the formation of *OCHO intermediate and stabilize the *HCOOH while inhibiting hydrogen adsorption. This study suggests that transient solid-state laser induction provides a facile and cost-effective approach to form ligand-free and defect-rich materials with tailored activities.