Heterojunction photocatalyst and preparation method thereof

• Main Authors: WANG MINGTAO, LIAO LIJUN, ZHOU WEI, LI ZHENZI, YUAN RUTING
• Format: Patent
• Language: Chinese; English
• Published: 23.12.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the technical field of photocatalysis, and particularly relates to a heterojunction photocatalyst and a preparation method thereof. The preparation method comprises the following steps: dissolving bismuth salt into an organic solvent to obtain a bismuth salt solution; meanwhile, dissolving tungsten salt into an organic solvent to obtain a tungsten salt solution; after stirring for a certain time, mixing a certain amount of titanium dioxide with the bismuth salt solution and the tungsten salt solution to obtain reaction gel; and performing high-temperature crystallization to obtain the heterojunction photocatalyst. The prepared heterojunction type photocatalyst has the following advantages that the effect of 100% inhibition of generation of a by-product N2O in a reaction can be achieved by preparing the heterojunction type photocatalyst; compared with independent titanium dioxide, the quantum efficiency of the heterojunction photocatalyst prepared by the method is remarkably improved.