The creation of sustainable energy via the photocatalytic reduction of CO₂ has been emerged as an eco-friendly track to create sustainable energy. In this work, we have prepared ZnMn₂O₄ nanoparticles that more reactive to the irradiation using visible light via silver doping. The ZnMn₂O₄ and Ag/ZnMn₂O₄ samples were tested for the production of methanol from the reduction of carbon dioxide. The surface texture and visible light absorption of ZnMn₂O₄ photocatalysts were improved via silver doping of the ZnMn₂O₄ sample. The band gap of ZnMn₂O₄ samples was reduced from 2.12 to 1.71 eV via silver doping of the ZnMn₂O₄ sample with 4.0 wt% of silver. The 3.0 Ag/ZnMn₂O₄ sample has 1100 μmol/g production of methanol within 9 h and 2.5 g/L dose of the photocatalyst. The high performance of Ag/ZnMn₂O₄ photocatalyst is due to the presence of silver, which retard e–h recombination rate and reduced band gap energy of ZnMn₂O₄ sample.

通过光催化还原CO ₂来产生可持续能源已经成为创建可持续能源的环保途径。在这项工作中，我们制备了ZnMn ₂ O ₄纳米颗粒，该颗粒对通过银掺杂的可见光的辐照反应更具反应性。测试了ZnMn ₂ O ₄和Ag / ZnMn ₂ O ₄样品中二氧化碳还原产生的甲醇。ZnMn ₂ O ₄样品的银掺杂改善了ZnMn ₂ O ₄光催化剂的表面织构和可见光吸收率。ZnMn ₂的带隙通过用4.0 wt％的银掺杂ZnMn ₂ O ₄样品，将O ₄样品从2.12 eV降低到1.71 eV 。3.0 Ag / ZnMn ₂ O ₄样品在9小时内产生了1100μmol / g的甲醇，光催化剂的剂量为2.5 g / L。Ag / ZnMn ₂ O ₄光催化剂的高性能归因于银的存在，这会延迟e - h的复合速率并降低ZnMn ₂ O ₄样品的带隙能。