The Synergistic Photocatalytic Effect of H3PW12O40 and Pt Nanoparticles Comodified UiO-66-NH2 on the Reduction of Aqueous Cr(VI) under Original pH

作者：Jiang, Xin; Zhao, Dongxiao; Chen, Jialiang; Li, Wenting; Li, Kexin^*; Chen, Chao

来源：Kinetics and Catalysis, 2022, 63(5): 470-479.

DOI：10.1134/S0023158422050056

• photocatalyst
• synergistic effect
• H3PW12O40
• UiO-66-NH2
• Cr(VI) reduction

A ternary synergistic photocatalyst H3PW12O40/Pt/UiO-66-NH2 was successfully fabricated for the first time through a simple solvothermal synthetic strategy. We found that the introduced solid acid of H3PW12O40 could provide bonded H+ to improve the oxidation power of Cr(VI), while the introduction of Pt would enhance the charge separation to provide abundant electrons, as a result showing a synergistic effect to facilitate the fast Cr(VI) reduction to Cr(III) under original pH conduction. Benefited from the aforementioned advantages, the as-prepared H3PW12O40/Pt/UiO-66-NH2 shows excellent photocatalytic performance toward toxic Cr(VI) reduction, where the Cr(VI) with a concentration of 10 mg L-1 could be totally reduced into its low toxic state of Cr(III) within one hour of catalytic reaction under neutral pH conditions. The innovative design shown in this work opens a new viewpoint in planning high performance semiconductors for environmental concerned applications.

• 单位
  南昌航空大学; 南昌大学