Kadi Mohammad W, Mohamed Reda M
Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Kingdom of Saudi Arabia.
Advanced Materials Department, Central Metallurgical R&D Institute, CMRDI, P.O. Box 87, Helwan, Cairo 11421, Egypt.
ACS Omega. 2021 Nov 5;6(45):30534-30541. doi: 10.1021/acsomega.1c04143. eCollection 2021 Nov 16.
A one-step sol-gel method for SrSnO nanoparticle synthesis and the incorporation of multi-walled carbon nanotubes (MWCNTs) to produce a SrSnO@MWCNT photocatalyst is presented. The incorporation of MWCNTs results in enhancement of structural, optical, and optoelectrical properties of SrSnO. The optimized 3.0% addition of MWCNTs results in light absorption enhancement and a reduction of the band gap from 3.68 to 2.85 eV. Upon application of the photocatalyst in the photocatalytic hydrogen production reaction, SrSnO@MWCNT-3.0% yields 4200 μmol g of H in just 9 h with the use of 1.6 g L of the photocatalyst. SrSnO@MWCNT exhibits remarkable chemical and photocatalytic stability upon regeneration. Enhanced photocatalytic ability is attributed to improved surface properties and charge-carrier recombination suppression induced by the MWCNT addition. This study highlights the remarkable improvements in chemical and physical properties of semiconductors with MWCNT incorporation.
本文介绍了一种一步溶胶-凝胶法合成SrSnO纳米颗粒，并将多壁碳纳米管（MWCNT）掺入以制备SrSnO@MWCNT光催化剂。MWCNT的掺入增强了SrSnO的结构、光学和光电性能。优化后的3.0%MWCNT添加量可增强光吸收，并使带隙从3.68 eV降低至2.85 eV。在光催化产氢反应中应用该光催化剂时，3.0%的SrSnO@MWCNT在仅9小时内使用1.6 g/L的光催化剂就能产生4200 μmol g的H。SrSnO@MWCNT在再生时表现出显著的化学和光催化稳定性。增强的光催化能力归因于MWCNT添加引起的表面性能改善和电荷载流子复合抑制。这项研究突出了掺入MWCNT后半导体在化学和物理性能方面的显著改善。
