Surface activation of cobalt oxide nanoparticles for photocatalytic carbon dioxide reduction to methane

Abstract

Surface treatment of cobalt oxide nanoparticles with N-bromosuccinimide and sulfur resulted in high photocatalytic efficiency of CO2 reduction into methane.

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

“…Photoelectron spectra of Co 2p were observed in all the three samples and peaks were fitted for analysis. The peak positions of Co 2p doublet spectra were at 780 and 795 eV (Co 2p 3/2 and Co 2p 1/2 , their exact peak values are given in the figure) with a binding energy difference of 15 eV approximately, which is matching with the values in the literature [10] , [15] , [29] . This difference is identified from the cobalt high-resolution spectra in Fig.…”

Bimetal–organic framework derived multi-heterostructured TiO2/CuxO/C nanocomposites with superior photocatalytic H2generation performance

“…34,58 As demonstrated in Fig. S6 in the ESI, † the CH x bond stretching at around 2900 and 1400 cm À1 is negligible, 59 and C-O, N-O, O]C-OH and C-N bonds are clearly presented between 1700 and 1200 cm À1 as surface functional groups in these as-prepared TiO 2 /Cu x O/C composites. The stretching modes for pure Cu 2 O and TiO 2 usually appear at 630 and 628 cm À1 respectively.…”

Recent advances in single atom catalysts for the electrochemical carbon dioxide reduction reaction

“…1,2 Electrocatalytic reduction of CO 2 driven by renewable electricity is environmentally friendly, and has become a hotspot in the eld of CO 2 conversion. The CO 2 RR involves very complex reactions, coupled with multiple proton and electron transfer steps, 3 which can convert CO 2 into carbon monoxide (CO), methane (CH 4 ), formic acid (HCOOH), methanol (CH 3 OH), ethylene (C 2 H 4 ), ethanol (C 2 H 5 OH), etc: Many catalysts have been explored to break the robust C]O bond, such as suldes, [4][5][6] phosphides, 7,8 oxides, [9][10][11][12][13] and so on. However, the performance of the CO 2 RR is still unsatisfactory, showing low activity and poor product selectivity, 14,15 especially for liquid C 2+ products.…”