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Synthesis of functionalized mesoporous Ni-SBA-16 decorated with MgO nanoparticles for Cr (VI) adsorption and an effective catalyst for hydrodechlorination of chlorobenzene
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.materresbull.2020.111059
Ali Athar Hussain , Sadia Nazir , Rabia Irshad , Kamran Tahir , Muslim Raza , Zia Ul Haq Khan , Arif Ullah Khan

Abstract In this research work the impact of MgO promoter tested on Ni-SBA-16 efficiency in aqueous media as an adsorbent for Cr(VI) and an effective catalyst for hydrodechlorination of chlorobenzene. New hydrothermal procedures were applied for the synthesis of Ni-SBA-16 and MgO/Ni-SBA-16 respectively. Results revealed that nanocomposites containing Ni nanocrystals of an average size distributed homogeneously within the pores of the amorphous silica matrix and also MgO was effectively coated on Ni-SBA-16 mesoporous silica walls, and that the mesoporous Ni-SBA-16 structure has been well preserved upon modification of MgO. The catalyst analysis results showed high interaction of unpromoted and MgO promoted catalyst Ni-SBA-16 as hydrodechlorination of chlorobanzene (≈ 96%) remained stable for 6 hours. The synthesized nanostructures were tested against Cr(VI) removal. 100% Cr(VI) adsorption was noted using 4 g/L and 200 mg/L of nanostructure and Cr(VI) respectively at temperature 75 °C, contact time 100 min and pH 3.

中文翻译:

氧化镁纳米颗粒修饰的功能化介孔 Ni-SBA-16 的合成用于 Cr (VI) 吸附和氯苯加氢脱氯的有效催化剂

摘要 在这项研究工作中,测试了 MgO 促进剂对 Ni-SBA-16 在水性介质中作为 Cr(VI) 吸附剂和氯苯加氢脱氯的有效催化剂效率的影响。新的水热程序分别用于合成 Ni-SBA-16 和 MgO/Ni-SBA-16。结果表明,含有均匀分布在无定形二氧化硅基质孔隙内的平均尺寸 Ni 纳米晶体和 MgO 的纳米复合材料有效地包覆在 Ni-SBA-16 介孔二氧化硅壁上,并且介孔 Ni-SBA-16 结构已经很好MgO 改性后保留。催化剂分析结果表明,未促进和 MgO 促进的催化剂 Ni-SBA-16 的高相互作用,因为氯苯的加氢脱氯 (≈ 96%) 保持稳定 6 小时。对合成的纳米结构进行了对 Cr(VI) 去除的测试。分别使用 4 g/L 和 200 mg/L 的纳米结构和 Cr(VI) 在温度 75 °C、接触时间 100 分钟和 pH 值 3 下观察到 100% Cr(VI) 吸附。
更新日期:2021-01-01
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