Chemistry Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, 57126, Indonesia.
Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Keputih, Sukolilo, Surabaya, 60111, Indonesia.
Sci Rep. 2022 Sep 10;12(1):15271. doi: 10.1038/s41598-022-19615-5.
Mesoporous silica NSG had been synthesized while employing gelatin as a natural template to successfully increase the particle size and expand the pore diameter of NSG. All silica samples exhibited a similar XRD pattern with a broad peak centred at 2θ = 22.9°, as the characteristic of amorphous silica. FTIR results showed that the reduction of Si-O-Si symmetric stretching vibrations at 1075 cm was due to the use of a high percentage of gelatin. Moreover, TEM analysis displayed the mesoporous channels in the form of a honeycomb structure with a diameter of ± 6 nm. Gelatin enhanced the surface area of silica from 467 to 510 m/g, the pore volume from 0.64 to 0.72 cc/g and expanded the pore diameter from 3.5 nm to 6.0 nm. The expansion of the ordered mesopores with the increase of P123: gelatin ratios was elucidated by the pore size distribution. The adsorption capacity of methylene blue (MB) was improved on mesoporous silica with an expanded pore dimension to give 168 mg/g adsorption capacity within 70 min.
介孔硅 NSG 已被合成，同时采用明胶作为天然模板成功地增加了 NSG 的粒径并扩大了孔径。所有二氧化硅样品均表现出相似的 XRD 图谱，在 2θ=22.9°处有一个宽峰，这是无定形二氧化硅的特征。FTIR 结果表明，由于使用了高比例的明胶，导致 Si-O-Si 对称伸缩振动在 1075cm 处减少。此外，TEM 分析显示介孔通道呈蜂窝状结构，直径为±6nm。明胶将二氧化硅的表面积从 467 增加到 510m/g，孔体积从 0.64 增加到 0.72cc/g，孔径从 3.5nm 扩大到 6.0nm。通过孔径分布阐明了随着 P123:明胶比例增加有序介孔的膨胀。对于具有扩大的孔尺寸的介孔二氧化硅，亚甲蓝（MB）的吸附容量得到提高，在 70 分钟内吸附容量达到 168mg/g。
