Nb_2O_5纳米线/碳纤维制备及Cr(VI)吸附降解研究
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摘要
以铌酸前驱体为铌源,十二烷基硫酸钠为模板剂,草酸铵为沉积剂,采用水热法制备了Nb_2O_5纳米线/碳纤维复合材料。采用SEM、TEM、XRD、BET、ICP等对样品性能进行了表征,Nb_2O_5纳米线长度为2~3 mm,直径为15~30 nm,呈单晶形态。研究了样品对Cr(VI)吸附与光还原降解能力,对Cr(VI)最大吸附量为115.6 mg/g;在紫外光照射条件下,反应50 min对Cr(VI)毒性降解率可达94.5%。
Nanorods Nb——2O_5/carbon fiber were prepared via hydrothermal method in the presence of niobic acid precursor as the source of niobium, ammonium oxalate as the deposition agent and SDBS as template. The prepared samples were characterized by several techniques including SEM, TEM, XRD, BET, ICP. Presented as single crystal, the nanorod is 2~3 mm in length and 15~30 nm in diameter. The adsorption ability and photocatalysis for Cr(VI) were studied and the maximum adsorption capacity of Cr(VI) was 115.6 mg/g. In the presence of UV light with 50 min reaction, the Cr(VI) toxicity degradation rate reached 94.5%.
Nanorods Nb——2O_5/carbon fiber were prepared via hydrothermal method in the presence of niobic acid precursor as the source of niobium, ammonium oxalate as the deposition agent and SDBS as template. The prepared samples were characterized by several techniques including SEM, TEM, XRD, BET, ICP. Presented as single crystal, the nanorod is 2~3 mm in length and 15~30 nm in diameter. The adsorption ability and photocatalysis for Cr(VI) were studied and the maximum adsorption capacity of Cr(VI) was 115.6 mg/g. In the presence of UV light with 50 min reaction, the Cr(VI) toxicity degradation rate reached 94.5%.
引文
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