Photocatalyst capable of inhibiting generation of N2O by-product in photocatalytic NOX elimination reaction and preparation method thereof

• Main Authors: CHO MI-RO, LIAO LIJUN, WANG CHEN, WANG XIAOYUE, CHEN YINGCHUN, LIU ZHAOHUI, YUAN RUTING, ZHAO GUANGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• 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 relates to a photocatalyst capable of inhibiting generation of N2O by-products in a reaction for eliminating NOX through photocatalysis and a preparation method of the photocatalyst, and belongs to the technical field of photocatalysis. The titanium dioxide nanosheet is used as an original material, part of lattice oxygen of the titanium dioxide nanosheet is removed through a reduction method, the oxygen vacancy defect is generated, and the photocatalyst anatase type titanium dioxide nanosheet rich in oxygen vacancies is obtained. Two pollutants including nitrogen oxide and soot particles are synchronously degraded through a photocatalysis method, generation of N2O can be effectively inhibited through lattice oxygen vacancy defects, especially when the mass ratio of sodium borohydride to titanium dioxide nanosheets is 45: 100, the inhibition effect on N2O is most remarkable, and the generation amount of N2O is 0 when the reaction time is 30 minutes, 60 minutes and 120 minutes. 本发明涉及一种可抑制光催化消除NOX