Preparation method of all-solid-state Z-type heterojunction based on cheap organic carbon source and application of all-solid-state Z-type heterojunction in dye wastewater

• Main Authors: HE XUBIN, WANG XIAOQING, ZHAO BINHE, XU JUNHAO, CHEN HAOSONG, SONG ZIRUI, ZHANG XINYUE, ZHANG JING
• Format: Patent
• Language: Chinese; English
• Published: 06.09.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a composite photocatalyst as well as a preparation method and application thereof. Bi2O3-Co3O4 (at) C is an all-solid-state Z-type heterojunction obtained by calcining a composite material Bi2WO6-Co-MOF (at) D113, and D113 is used as an organic carbon source and is low in cost and easy to obtain. When the Bi2O3-Co3O4 (at) C composite photocatalyst is illuminated, n-Bi2O3 and p-Co3O4 semiconductors generate a large number of electrons and holes, and an electron flow forms a Z-type transmission chain under the mediation of graphitized carbon. The Bi2O3-Co3O4 (at) C can completely degrade disperse red within 2 hours, and the photocatalytic efficiency of the Bi2O3-Co3O4 (at) C is still kept at 91.46% after five times of circulation, so that the Bi2O3-Co3O4 (at) C has good cyclic utilization performance and certain stability and is a high-efficiency and low-consumption photocatalyst. 本发明公开了一种复合光催化剂、制备方法及应用。Bi2O3-Co3O4@C是由一种复合材料Bi2WO6-Co-MOF@D113煅烧而得的全固态Z型异质结，其中D113做为有机碳源，廉价易得。Bi2O3-Co3O4@C复