Synthesis of Ni(2)P/CdS and Pt/TiO(2) nanocomposite for photoreduction of CO(2) into methanol

It is a great challenge to convert thermochemically stable CO(2) into value-added products such as CH(4), CH(3)OH, CO via utilizing solar energy. It is also a difficult task to develop an efficient catalyst for the reduction of CO(2). We have designed and synthesized noble metal-free photocatalytic nanostructure Ni(2)P/CdS and Pt/TiO(2) for conversion of CO(2) to methanol in the presence of sacrificial donor triethylamine (TEA) and hydrogen peroxide. The synthesised catalysts physicochemical properties were studied by using several spectroscopic techniques like; XRD, UV-DRS, XPS, TEM, SEM and PL. Quantification of methanol by GC–MS showed encouraging results of 1424.8 and 2843 μmol g(−1) of catalyst for Pt/TiO(2) and 5 wt% Ni(2)P/CdS composites, respectively. Thus, Ni(2)P/CdS is a promising catalyst with higher productivity and significant selectivity than in-vogue catalysts.