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首页> 外文期刊>Journal of Sol-Gel Science and Technology >Sol-gel mediated synthesis of silica nanoparticle from Bambusa vulgaris leaves and its environmental applications: kinetics and isotherms studies
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Sol-gel mediated synthesis of silica nanoparticle from Bambusa vulgaris leaves and its environmental applications: kinetics and isotherms studies

机译：溶胶 - 凝胶介导来自Bambusa Vulgaris叶片的二氧化硅纳米粒子的合成及其环境应用：动力学和等温机构研究

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The present investigation had made to synthesis of silica nanoparticle (SiNp) from Bambusa vulgaris leaves (BVL) ash by using sol-gel technique and it was utilized for the removal of Cadmium (Cd) and Congo red (CR) in aqueous solutions. Further, the synthesized adsorbent was characterized using instrumental techniques such as XRD, FTIR, FESEM-EDS mapping, TEM, BET, and Zeta potential. In addition, the batch mode technique (such as pH, adsorbent dose, and contact time) was carried out for optimization of Cd and CR removal. The adsorption behavior and capacity was calculated using different isotherms and kinetics. The obtained results of Cd and CR removal were optimized with following parameters such as pH 7, adsorbent dose (100mg), and equilibrium time (30min). Also, the adsorbent behavior was found suitable in Langmuir and Freundlich isotherm model and its maximum adsorbent capacity was 133 and 172mg/g. The kinetic data were better fitted into the pseudo-second order model. The results concluded that the synthesized SiNp was the best adsorbent for the removal of his investigation utilized Bambusa vulgaris leaves for synthesis of silica nanoparticle by sol-gel process and removal of Cadmium and Congo red. Bamboo species are considered one of the fast growing and high yielding plants. Mostly, it has been utilized for making of winnow, basket, fan, and pulp production. Indeed, as per previous reports this leaves are considered as waste; also they analyzed chemical properties of leaves. It contained higher percentage (more than 35%) of silica. Finally, we conclude that synthesized silica nanoparticle are eco-friendly and economically efficient adsorbent for removal of heavy metals as well as dyes in the aqueous solutions and also best solution for agricultural waste managemeHighlightsSilica nanoparticles were synthesized from Bambusa vulgaris leaves by sol-gel method.Silica nanoparticles were characterized using XRD, FTIR, FESEM-EDS mapping, TEM, BET, and Zeta potential.Cadmium and Congo red were removed using synthesized silica nanoparticles in batch mode.Maximum adsorption capacity (Q(o)) of Cd and Congo red were 133, 172mg/g, respectively.
机译：通过使用溶胶 - 凝胶技术对来自Bambusa vulgaris叶（BVL）灰的硅纳米粒子（SINP）合成本发明的研究，并用于在水溶液中除去镉（CD）和刚果红（Cr）。此外，使用仪器技术（例如XRD，FTIR，FESEM-EDS映射，TEM，BET和Zeta电位）表征合成吸附剂的特征。另外，进行批量模式技术（例如pH，吸附剂量和接触时间）以优化CD和Cr去除。使用不同的等温线和动力学计算吸附行为和容量。通过以下参数如pH7，吸附剂剂量（100mg）和平衡时间（30min）进行优化所得Cd和Cr去除结果。此外，发现吸附的行为在Langmuir和Freundlich等温线模型中，其最大吸附能力为133和172mg / g。动力学数据更好地安装到伪二阶模型中。结果得出结论认为，合成的SINP是用于去除他调查的最佳吸附剂，用于通过溶胶 - 凝胶工艺合成二氧化硅纳米粒子并除去镉和刚果红色。竹种被认为是快速增长和高产植物之一。主要是，它已被用于制作Winnow，篮子，风扇和纸浆生产。实际上，根据之前的报道，这片叶被认为是浪费;还分析了叶子的化学性质。它包含较高的百分比（超过35％）二氧化硅。最后，我们得出结论，合成的二氧化硅纳米粒子是生态友好的且经济上有效的吸附剂，用于去除重金属以及水溶液中的染料，以及通过溶胶 - 凝胶法从Bambusa Ventgaris叶中合成了农业废物管理中的最佳解决方案。使用XRD，FTIR，FESEM-EDS测绘，TEM，BET和Zeta电位的特征在特征。使用合成的二氧化硅纳米粒子以批量模式的合成二氧化硅纳米粒子除去丙酰胺。分别为133,172mg / g。

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