2/棉花纖維"/> 2對棉花纖維表面進行修飾,再通過浸漬-NaBH4還原法將Pd納米顆粒沉積在TiO2/棉花纖維(TC)表面,制備得到Pd/TiO2/棉花纖維復合催化材料(PTC)。所制備的復合催化材料用于室溫氧化分解甲醛,研究了Pd負載量對催化性能的影響。結果表明,PTC催化材料具有遠低于粉末狀樣品的氣阻,此特點對催化材料的實際應用具有非常大的優(yōu)勢；該催化材料能有效室溫分解甲醛成CO2和H2O。PTC催化材料的催化活性隨Pd含量(0.25-1.0 wt%范圍內)的增加而增加。鑒于PTC催化材料具有低氣阻、輕質、使用靈活的屬性和良好催化效率,以及載體棉花原料來源廣泛、成本低等優(yōu)點,因此它具有良好的實際應用于室內空氣凈化和相關催化過程的潛力。"/>

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Pd/TiO2/棉花纖維復合催化材料的制備與性能研究
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1.湖北工業(yè)大學材料與化學工程學院;2.武漢理工大學材料復合新技術國家重點實驗室

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國家自然科學基金資助(項目號51572074);大學生創(chuàng)新創(chuàng)業(yè)項目（項目號201610500021）


Fabrication of Pd/TiO2/Cotton Fiber Composite Catalytic materials and study of its catalytic performance
Author:
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1.School of Materials and Chemical Engineering,Hubei University of Technology;2.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology

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    摘要:

    本文先通過浸漬-提拉法將納米TiO2對棉花纖維表面進行修飾,再通過浸漬-NaBH4還原法將Pd納米顆粒沉積在TiO2/棉花纖維(TC)表面,制備得到Pd/TiO2/棉花纖維復合催化材料(PTC)。所制備的復合催化材料用于室溫氧化分解甲醛,研究了Pd負載量對催化性能的影響。結果表明,PTC催化材料具有遠低于粉末狀樣品的氣阻,此特點對催化材料的實際應用具有非常大的優(yōu)勢；該催化材料能有效室溫分解甲醛成CO2和H2O。PTC催化材料的催化活性隨Pd含量(0.25-1.0 wt%范圍內)的增加而增加。鑒于PTC催化材料具有低氣阻、輕質、使用靈活的屬性和良好催化效率,以及載體棉花原料來源廣泛、成本低等優(yōu)點,因此它具有良好的實際應用于室內空氣凈化和相關催化過程的潛力。

    Abstract:

    Cotton fibers were firstly treated by nano TiO2 coating via a dip-coating method, and then Pd nanoparticles (NPs) were deposited onto the surface of TiO2/cotton fiber (TC) to acquire the Pd/TiO2/cotton fiber composite (PTC) catalyst by a combined impregnation and NaBH4-reduction method. The obtained PTC sample was used for room-temperature catalytic oxidation of formaldehyde (HCHO) and the influence of Pd content on catalytic activity was investigated. The results reveal that the air resistance of PTC catalyst is much lower than that of the powder-like sample, which is of vital importance for its actual application, and HCHO can be catalytically decomposed into CO2 and H2O over PTC. The catalytic activity of PTC increases with increasing of Pd content in the range of 0.25-1.0 wt%. Owing to the merits of low air resistance, light mass, flexible properties, good efficiency of the PTC catalyst, it can be a good candidate in actual indoor air purification and related catalytic processes.

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汪杰,聶龍輝,余家國. Pd/TiO2/棉花纖維復合催化材料的制備與性能研究[J].稀有金屬材料與工程,2019,48(1):341~347.[Wang Jie, Nie Longhui, Yu Jiaguo. Fabrication of Pd/TiO2/Cotton Fiber Composite Catalytic materials and study of its catalytic performance[J]. Rare Metal Materials and Engineering,2019,48(1):341~347.]
DOI：10.12442/j. issn.1002-185X.20170451

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  • 收稿日期:2017-05-28
  • 最后修改日期:2017-08-05
  • 錄用日期:2017-08-18
  • 在線發(fā)布日期: 2019-02-18
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