Rodionov Ivan A, Maksimova Elizaveta A, Pozhidaev Artem Y, Kurnosenko Sergey A, Silyukov Oleg I, Zvereva Irina A
Institute of Chemistry, Saint-Petersburg State University, Saint-Petersburg, Russia.
Front Chem. 2019 Dec 12;7:863. doi: 10.3389/fchem.2019.00863. eCollection 2019.
A layered perovskite-type oxide intercalated with -butylamine is reported as an efficient photocatalyst for hydrogen production from aqueous solutions of alcohols for the first time. The hybrid photocatalyst HNdTiO×BuNH was synthesized by solid-state ceramic method followed by protonation, intercalation of methylamine and subsequent substitution by -butylamine. The product was characterized by powder XRD, TGA, STA-MS, DRS, IR, and Raman spectroscopy, CHN analysis, SEM. Intercalation of -butylamine caused a dramatic increase in photocatalytic activity of HNdTiO in the reaction of hydrogen evolution from aqueous solutions of methanol, ethanol, and -butanol under UV radiation. While the non-intercalated Pt-loaded HNdTiO showed a maximum quantum efficiency of only 2% in the 220-340 nm range, the efficiency for hybrid samples reached 23% under the same conditions and after variation of experimental parameters even 52% efficiency was achieved. This effect may be associated with the significant expansion of the interlayer space, which is considered as a separate reaction zone.
首次报道了一种插层有丁胺的层状钙钛矿型氧化物作为从醇水溶液中制氢的高效光催化剂。通过固态陶瓷法，随后进行质子化、甲胺插层以及随后用丁胺取代，合成了杂化光催化剂HNdTiO×BuNH。通过粉末XRD、TGA、STA-MS、DRS、IR和拉曼光谱、CHN分析、SEM对产物进行了表征。在紫外辐射下，丁胺的插层使HNdTiO在甲醇、乙醇和丁醇水溶液析氢反应中的光催化活性显著提高。未插层的负载Pt的HNdTiO在220 - 340 nm范围内的最大量子效率仅为2%，而杂化样品在相同条件下效率达到23%，并且在改变实验参数后甚至达到了52%的效率。这种效应可能与层间空间的显著扩大有关，层间空间被视为一个独立的反应区。
