从醋酸纤维素和聚丙烯酸膜支撑的氧化石墨烯中去除六价铬

Q3 Business, Management and Accounting

Journal of Technology Management and Innovation Pub Date : 2021-06-30 DOI:10.35429/jti.2021.22.8.1.8

Juan Antonio Sánchez-Márquez, R. Fuentes-Ramírez, Z. Gamiño-Arroyo

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引用次数: 0

摘要

本研究主要研究了在交联醋酸纤维素和聚丙烯酸聚合物膜上负载氧化石墨烯去除六价铬的工艺。采用反相法合成了氧化石墨烯膜，并将氧化石墨烯按重量的1%加入到聚合物材料中。从结晶石墨中获得氧化石墨烯(电子显微镜科学，70230号)。采用改进的Hummers氧化法对石墨进行氧化。利用拉曼光谱对聚合物和氧化石墨烯进行表征。用Loskutov和Kuzin提出的电位滴定法测定了材料的表面电荷和零电荷点。研究了接触时间和初始浓度对Cr (VI)去除率的影响。当初始浓度为1 mg/L时，接触时间为32 ~ 64 h，对Cr (VI)的去除率达到90%。

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Removal of hexavalent chromium from graphene oxide supported on a cellulose acetate and polyacrylic acid membrane

This work focused on the study of the hexavalent chromium removal process from graphene oxide supported on a cross-linked cellulose acetate and polyacrylic acid polymeric membrane. The membranes were synthesized by the phase inversion method and Graphene oxide was added in proportions of 1% by weight to the polymeric material. Graphene oxide was obtained from crystalline graphite (Electron Microscope Science, No. 70230). The graphite was oxidized using the improved method of Hummers. The characterization of polymer and graphene oxide was made by Raman spectroscopy. The surface charge and point of zero charge of the materials were evaluated using a potentiometric titration method proposed by Loskutov and Kuzin. The removal of Cr (VI) was studied as a function of contact time and of initial concentration of Cr (VI). The removal of Cr (VI) (~90%) mainly occurs in a contact time from 32 to 64 h when the initial concentration of Cr (VI) is 1 mg/L.

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来源期刊

Journal of Technology Management and Innovation Business, Management and Accounting-Management of Technology and Innovation

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： JOTMI is a quarterly indexed electronic journal, refereed and edited by Business and Economy Faculty at Alberto Hurtado University. Its mission is to publish original and novel literature in the fields of technology management and innovation; putting emphasis in topics relevant in a global fashion, remarking in Latin-Ibero-America and the Caribbean. The objective of the journal is to analyze the impact that global technological change has on society and to disseminate the best management practices of companies and organizations.