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Bio-waste-derived few-layered graphene/SrTiO3/PAN as efficient photocatalytic system for water splitting
Applied Surface Science ( IF 6.7 ) Pub Date : 2021-02-04 , DOI: 10.1016/j.apsusc.2021.149176
Chingis Daulbayev , Fail Sultanov , Alina V. Korobeinyk , Mukhtar Yeleuov , Seitkhan Azat , Baglan Bakbolat , Arman Umirzakov , Zulkhair Mansurov

Bio-waste-derived few-layered graphene/SrTiO3/PAN photocatalytic systems obtained via electrospinning technique have been investigated as promising, inexpensive and efficient photoelectrochemical materials for hydrogen production through the solar water-splitting. For the first time, a few-layered graphene synthesized from biologically waste materials such as a rice husk and walnut shell was used as a co-catalyst in a composite photocatalytic system. Results obtained in this work showed that the presence of the graphene is not only promoting the decrease of the band gap of the photocatalytic system, but also positively alter the effective separation of photoinduced charges. At the same time, those composite photocatalytic systems demonstrated a higher rate of the hydrogen release during the water splitting reaction when compared with the pure SrTiO3. Performance of the bio-waste-derived few-layered graphene/SrTiO3/PAN as a photocatalyst in the water-splitting reaction under the UV has been investigated. The developed photocatalytic systems based on few-layered graphene derived from bio-wastes, SrTiO3 and PAN are perspective candidates for production of hydrogen under splitting water-alcohol mixtures.



中文翻译:

生物废物衍生的多层石墨烯/ SrTiO 3 / PAN作为高效的水分解光催化体系

生物废物衍生的多层石墨烯/ SrTiO 3通过静电纺丝技术获得的/ PAN光催化系统已被研究为通过太阳能水分解产生氢的有前途,廉价和有效的光电化学材料。首次将由生物废料(例如稻壳和核桃壳)合成的几层石墨烯用作复合光催化体系中的助催化剂。这项工作获得的结果表明,石墨烯的存在不仅促进了光催化体系带隙的减小,而且还积极地改变了光诱导电荷的有效分离。同时,与纯SrTiO 3相比,这些复合光催化体系在水分解反应过程中显示出更高的氢释放速率。。研究了生物废料衍生的多层石墨烯/ SrTiO 3 / PAN作为光催化剂在紫外光下的水分解反应中的性能。基于衍生自生物废物的少量层状石墨烯,SrTiO 3和PAN的已开发的光催化系统是在水-醇混合物分解下生产氢气的理想方法。

更新日期:2021-02-21
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