Facile synthesis of Na<sub>0.9</sub>Mg<sub>0.45</sub>Ti<sub>3.55</sub>O<sub>8</sub>-Na<sub>2</sub>Ni<sub>2</sub>Ti<sub>6</sub>O<sub>16</sub> solid solutions for improving photocatalytic CO<sub>2</sub> reduction
收藏资源简介：
In this study, a straightforward one-step hydrothermal method was successfully utilized to synthesize the solid solution Na0.9Mg0.45Ti3.55O8-Na2Ni2Ti6O16 (NNMTO-x), where x denotes the molar percentage of Na2Ni2Ti6O16 (NNTO) within Na0.9Mg0.45Ti3.55O8 (NMTO), with x values of 10, 20, 30, 40, and 50. Both XPS (X-ray Photoelectron Spectroscopy) and EDX (Energy Dispersive X-ray Spectroscopy) analyses unequivocally validated the formation of the NNMTO-x solid solutions. It was observed that when x is below 40, the NNMTO-x solid solution retains the structural characteristics of the original NMTO. However, beyond this threshold, significant alterations in crystal morphology were noted, accompanied by a noticeable decline in photocatalytic activity. Notably, the absorption edge of NNMTO-x (x2. Specifically, after a 6 h irradiation period, the production rates of CO and CH4 were recorded at 42.38 and 1.47 μmol/g, respectively. This investigation provides pivotal insights that are instrumental in the advancement of highly efficient and stable photocatalysts tailored for CO2 reduction processes.
