聚乙烯醇基杂化材料固定化皮三磷酸体r57，有效去除铬离子

IF 0.3 4区综合性期刊 Q4 MULTIDISCIPLINARY SCIENCES

Comptes Rendus De L Academie Bulgare Des Sciences Pub Date : 2013-01-01 DOI:10.7546/CR-2013-66-1-13101331-5

N. Georgieva, R. Bryaskova, N. Lazarova, D. Peshev, R. Tzoneva

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引用次数: 2

摘要

制备了以聚乙烯醇(PVA)和γ-氨基丙基三乙氧基硅烷(APTEOS)、3-巯基丙基三乙氧基硅烷(MPTEOS)和四乙氧基硅烷(TEOS)为基体的新型杂化材料。为了确定混合材料的热稳定性，进行了热重分析(TGA)。对新材料进行了生物膜形成和生物吸附研究。他们被测试作为基质固定的皮肤毛孢R57能够从水溶液中去除铬(VI)。利用APTEOS和MPTEOS作为前体，结合了新的NH -和SH -键，为细胞固定提供了额外的结合位点。混合基质中SH -和NH -基团的存在导致固定化Tr. cutanum R57细胞的Cr(VI)吸附能力明显提高，这是由于通过PVA官能团在基质中加入了额外的吸附位点。合成的PVA/APTEOS材料被证明在生物吸附应用中是有效的。

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PVA-BASED HYBRID MATERIALS FOR IMMOBILIZATION OF TRICHOSPORON CUTANEUM R57 EFFICIENT IN REMOVAL OF CHROMIUM IONS

New hybrid materials based on polyvinyl alcohol (PVA) and γ-aminopropyltriethoxyxilane (APTEOS), 3-mercaptopropyltriethoxysilane (MPTEOS) and tetraethoxysilane (TEOS) were prepared. To determine the thermal stability of the hybrid materials, thermogravimetric analysis (TGA) was performed. The new materials were tested for biofilm formation and biosorption studies. They were tested as matrices for immobilization of Trichosporon cutaneum R57 capable to remove Cr(VI) from aqueous solutions. The use of APTEOS and MPTEOS as precursors, incorporated new NH– and SH– bonds, which ensured additional binding places for cells immobilization. The presence of SH– and NH– groups in the hybrid matrices resulted in apparently higher Cr(VI) sorption capacity of the immobilized Tr. cutaneum R57 cells due to the incorporation of additional adsorption sites in the matrix through the PVA functionalities. The synthesized PVA/APTEOS materials proved efficient for use in biosorption applications.

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来源期刊

Comptes Rendus De L Academie Bulgare Des Sciences 综合性期刊-综合性期刊

CiteScore

0.60

自引率

33.30%

发文量

181

审稿时长

3-6 weeks

期刊介绍： Founded in 1948 by academician Georgy Nadjakov, "Comptes rendus de l’Académie bulgare des Sciences" is also known as "Доклади на БАН","Доклады Болгарской академии наук" and "Proceeding of the Bulgarian Academy of Sciences". If applicable, the name of the journal should be abbreviated as follows: C. R. Acad. Bulg. Sci. (according to ISO)