Shohag Mohammad Riaz Hosen, Rahman Khan Mohammad Mizanur, Saleh Md Abu, Supta Azmeri Sultana, Chowdhury Mohammad Shahadat Hussain, Rahman Md Mostafizur, Marwani Hadi M, Rahman Mohammed M, Okoli Okenwa
Department of Chemistry, Shahjalal University of Science and Technology Sylhet-3114 Bangladesh
Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology Sylhet 3114 Bangladesh.
RSC Adv. 2023 Aug 14;13(35):24343-24352. doi: 10.1039/d3ra03633b. eCollection 2023 Aug 11.
l-Glutamic acid/ZnS (L-GA/ZnS) composites were prepared by varying the amount of ZnS addition ranging from 1-5 wt% by means of an easy solvent casting approach. The morphological investigation, antimicrobial activity, photocatalytic enactment, and electrochemical properties of the composites were evaluated. The formation of L-GA/ZnS composites was confirmed by FTIR, UV-Vis, and photoluminescence (PL) spectroscopy. Besides, FTIR, UV-Visible, and PL data revealed the possible incorporation of ZnS into L-GA. The L-GA/ZnS composites demonstrated similar plate-like structure of L-GA with agglomerated ZnS morphology on the plate surface with diameter in the range of 50-500 nm, confirmed by FESEM/EDS measurements. The prepared composites showed excellent photocatalytic depiction towards methylene blue (MB) degradation in comparison to L-GA and ZnS. A set of supercapacitor devices were fabricated using L-GA/ZnS composites. The performance of the supercapacitor was assessed by GCD and exhibited good energy storage capacity. The prepared composites showed promising prospects for hybrid supercapacitor application. These outcomes may offer new insight into the fabrication of L-GA/ZnS composites as photocatalysts for organic contaminants treatment.
通过简单的溶液浇铸法，改变硫化锌（ZnS）的添加量（范围为1-5 wt%），制备了L-谷氨酸/硫化锌（L-GA/ZnS）复合材料。对复合材料的形态、抗菌活性、光催化性能和电化学性能进行了评估。通过傅里叶变换红外光谱（FTIR）、紫外可见光谱（UV-Vis）和光致发光（PL）光谱证实了L-GA/ZnS复合材料的形成。此外，FTIR、紫外可见光谱和PL数据表明ZnS可能掺入到L-GA中。场发射扫描电子显微镜/能谱仪（FESEM/EDS）测量证实，L-GA/ZnS复合材料呈现出与L-GA相似的板状结构，板表面有团聚的ZnS形态，直径在50-500 nm范围内。与L-GA和ZnS相比，所制备的复合材料对亚甲基蓝（MB）降解表现出优异的光催化性能。使用L-GA/ZnS复合材料制备了一组超级电容器器件。通过恒流充放电（GCD）评估了超级电容器的性能，其表现出良好的储能能力。所制备的复合材料在混合超级电容器应用方面显示出广阔的前景。这些结果可能为制备用于处理有机污染物的光催化剂L-GA/ZnS复合材料提供新的见解。
