种高活性mpg-C3N4/RE-BiVO4异质结光催化剂及其制备方法和应用

• Format: Patent
• Language: Chinese
• Published: 16.01.2018
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

本发明公开了种高活性mpg-CN/RE-BiVO异质结光催化剂及其制备方法和应用，先制备mpg-CN粉体并将其分散在乙醇中；然后将五水硝酸铋溶液与偏钒酸铵溶液混合并调节其pH值，再加入稀土硝酸盐，得前驱RE-BiVO悬浊液；再将mpg-CN醇溶液加入前驱RE-BiVO悬浊液中，得反应前驱液，最后采用微波水热法制得mpg-CN/RE-BiVO异质结光催化剂。该催化剂为介孔mpg-CN和棒状四方锆石相RE-BiVO形成的异质结结构，在模拟太阳光照射下具有较高的光催化活性，大大改善了纯相BiVO的光催化效率，在环境污染物等处理方面具有良好的应用前景。 The invention discloses high-activity mpg-C3N4/RE-BiVO4 heterojunction photocatalyst and a preparation method and application thereof. First, mpg-C3N4 powder is prepared and dispersed into ethyl alcohol; then a bismuth nitrate pentahydrate solution and an ammonium metavanadate solution are mixed, the pH value of the mixture is adjusted, rare earth nitrate is added, and then precursor RE-BiVO4 turbid liquid is obtained; then, an mpg-C3N4 alcoholic solution is added into the precursor RE-BiVO4 turbid liquid to obtain reaction precursor liquid, and finally a microwave hydrothermal method is adopted for preparing the mpg-C3N4/RE-BiVO4 heterojunction photocatalyst. The catalyst is of a heterojunction structure formed by mesporous mpg-C3N4 and