a g-c 3 no 4 -tio 2 Heterojunction photocatalyst and preparation method thereof

A photocatalyst, g-c3n4 technology, applied in the field of photocatalytic materials, can solve the problems of harsh conditions, low catalytic efficiency and photocatalytic activity, complex preparation process, etc., and achieve mild reaction conditions, good photocurrent response performance, and simple preparation method. Effect
CN107308974BActive Publication Date: 2020-07-28JIANGSU UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU UNIV OF TECH
Publication Date
2020-07-28

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Abstract

The invention discloses a g-C 3 N 4 –TiO 2 Heterojunction photocatalyst and preparation method thereof. The method comprises the steps of: calcining melamine at a high temperature to obtain g-C 3 N 4 ; the resulting g‑C 3 N 4 with TiO 2 Precursors mixed to obtain g-C by sol-hydrothermal method 3 N 4 / TiO 2 Photocatalyst; The resulting g-C 3 N 4 / TiO 2 React under the action of shrinkage agent to get g‑C 3 N 4 –TiO 2 heterojunction photocatalysts. g-C of the present invention 3 N 4 –TiO 2 The composite catalyst has a compact heterojunction structure, which has a high photocurrent response capability under light conditions, and the heterojunction structure can effectively inhibit the recombination of photogenerated electron-holes. At the same time, the preparation method of the invention has easy-to-obtain raw materials, low cost, mild reaction conditions and no pollution to the environment, and has good application prospects.
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Description

technical field

[0001] The invention relates to the field of photocatalytic materials, in particular to a g-C 3 N 4 –TiO 2 Heterojunction photocatalyst and preparation method thereof. Background technique

[0002] With the rapid increase of the world's population and the rapid development of modern industry, energy shortage and environmental pollution have become two major problems faced by today's society. As an emerging and green technology, photocatalysis based on semiconductor materials has great potential in solving energy and environmental problems. In recent decades, among many semiconductors, TiO 2 Because of its stable chemical properties, mild reaction conditions, strong oxidation-reduction properties, and low secondary pollution, it has always been a hot research area for researchers. However, pure TiO 2 Photogenerated electrons and holes are easily recombined in the photocatalytic reaction, resulting in low photon quantum efficiency and inhibited photocatal...

Claims

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