ABSTRACT

In the present work, we have successfully synthesised graphene oxide (GO) from the Bio-soot wastes where Bio-soot was used as a graphite source. The prepared GO has been characterised by using XRD, FTIR, Raman, BET, FE-SEM analytical techniques and has been used as an adsorbent for decontamination of highly noxious Methylene blue (MB) dye from aqueous media. The adsorption studies have been investigated by changing the different parameters like adsorbent dosages, pH of the solution, contact time and initial concentration. The obtained adsorption data have been fitted into various kinetic and isotherm models and concluded that adsorption of MB follows second order kinetics and Langmuir models with maximum adsorption capacities 90.20 mg/g which is double as compared to Bio-soot that was 41.42 mg/g. This is due to the increase in adsorption active sites by introducing oxygen-containing groups on Bio-soot surface.

摘要

在目前的工作中，我们已经成功地从生物烟灰废物中合成了氧化石墨烯（GO），其中生物烟灰用作石墨源。所制备的 GO 已通过使用 XRD、FTIR、拉曼、BET、FE-SEM 分析技术进行表征，并已用作吸附剂，用于从水性介质中去除高毒亚甲蓝 (MB) 染料。通过改变吸附剂剂量、溶液的 pH 值、接触时间和初始浓度等不同参数，对吸附研究进行了研究。获得的吸附数据已拟合到各种动力学和等温线模型中，并得出结论，MB 的吸附遵循二级动力学和 Langmuir 模型，最大吸附容量为 90.20 毫克/克，是生物烟尘 41.42 毫克/克的两倍。