Issue 5, 2019

Lewis acid activated CO2 reduction over a Ni modified Ni–Ge hydroxide driven by visible-infrared light

Abstract

Improvement of light harvesting and reaction kinetics is of great importance for achieving efficient solar-driven CO2 reduction. Here, a Ni modified low-crystalline Ni–Ge containing hydroxide with Lewis acid sites was synthesized in highly reductive NaBH4 solution and exhibited 9.3 μmol gcat.−1 h−1 CO and 3.5 μmol gcat.−1 h−1 CH4 generation rates under visible light irradiation, and even achieved a 3.8 μmol gcat.−1 h−1 CO evolution under infrared light irradiation. The wide-spectrum light harvesting resulted from the light absorption from the localized surface plasmonic resonance of Ni nanoparticles. In addition, the Lewis acid can activate C[double bond, length as m-dash]O bonds to decrease the kinetic barriers of CO2 reduction. The design concept that rationally combines the advantages of expanding the spectral response and activating CO2 may offer a new strategy for efficient solar energy utilization.

Graphical abstract: Lewis acid activated CO2 reduction over a Ni modified Ni–Ge hydroxide driven by visible-infrared light

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov 2018
Accepted
04 Dec 2018
First published
04 Dec 2018

Dalton Trans., 2019,48, 1672-1679

Lewis acid activated CO2 reduction over a Ni modified Ni–Ge hydroxide driven by visible-infrared light

Z. Xin, L. Lu, B. Wang, X. Wang, K. Zhu, Z. Xu, Z. Yu, S. Yan and Z. Zou, Dalton Trans., 2019, 48, 1672 DOI: 10.1039/C8DT04408B

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