International Journal of Hydrogen Energy ( IF 8.1 ) Pub Date : 2020-05-11 , DOI: 10.1016/j.ijhydene.2020.04.268 Keziban Atacan , Nuray Güy , Belgassim Boutra , Mahmut Özacar
Novel Ag2CrO4/GO/MnFe2O4 photocatalysts synthesized by precipitation method and fabricated on indium tin oxide surface by electrophoretic deposition technique. The obtained Ag2CrO4/GO/MnFe2O4 composite has been verified by microscopic study, chemical and structural analyses. Also, the ternary composite showed higher photocurrent response and weaker photoluminescence spectrum than MnFe2O4, GO, Ag2CrO4 and GO/MnFe2O4. Photo-cathodes prepared using semiconductor photocatalyst powders were investigated for visible-light-driven photoelectrochemical hydrogen evolution. The best result of the photoelectrochemical hydrogen production in the presence of Ag2CrO4/GO/MnFe2O4 composite was determined as 446.93 μmol.cm−2 in 90 min under visible light illumination. So, the enhanced hydrogen producing over the ternary composite was obtained. This study presents the development of stable visible light active photocatalytic materials and the design of efficient for the advancement of hydrogen production via photoelectrochemical water splitting in the future.
中文翻译:
新型三元Ag 2 CrO 4 / GO / MnFe 2 O 4光催化剂促进光电化学产氢
沉淀法合成Ag 2 CrO 4 / GO / MnFe 2 O 4新型光催化剂,并通过电泳沉积法在铟锡氧化物表面制备。所得的Ag 2 CrO 4 / GO / MnFe 2 O 4复合材料已通过显微镜研究,化学和结构分析得到了验证。而且,三元复合材料比MnFe 2 O 4,GO,Ag 2 CrO 4和GO / MnFe 2 O 4表现出更高的光电流响应和更弱的光致发光光谱。。研究了使用半导体光催化剂粉末制备的光阴极用于可见光驱动的光电化学氢的释放。在可见光照射下,在90分钟内,在存在Ag 2 CrO 4 / GO / MnFe 2 O 4复合材料的情况下,光电化学制氢的最佳结果确定为446.93μmol.cm- 2。因此,获得了在三元复合材料上产生的增强的氢。这项研究提出了稳定的可见光活性光催化材料的发展以及未来通过光电化学水分解制氢的有效设计。