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碳纖維負(fù)載Pd-TiO2光催化材料的制備及表征
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長江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃資助項(xiàng)目(IRT0654)；浙江省自然科學(xué)基金資助項(xiàng)目(Y406310)


Preparation and Characterization of Pd-TiO2 Photocatalytic Materials Supported by Carbon Fibers
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    摘要:

    以PAN基碳纖維為載體，采用溶膠-凝膠法制備碳纖維負(fù)載TiO2的光催化材料（TiO2/CF），用常溫氧化-還原法在其表面沉積貴金屬Pd粒子對其改性，制備碳纖維負(fù)載Pd-TiO2的光催化材料（Pd-TiO2/CF）。XRD分析表明：采用溶膠-凝膠法在碳纖維表面形成了銳鈦礦型TiO2。選擇偶氮類染料酸性橙Ⅱ作為光催化降解目標(biāo)物，用紫外吸收光譜分析等TiO2負(fù)載量的TiO2/CF，Pd-TiO2/CF和粉末型TiO2的光催化活性。結(jié)果表明：TiO2在負(fù)載條件下光催化活性有所下降；Pd粒子沉積可有效提高光催化活性；對于酸性橙Ⅱ溶液，Pd-TiO2/CF光催化活性較TiO2/CF、 粉末型TiO2均有顯著提高

    Abstract:

    Carbon-fiber-supported TiO2 photocatalytic material (TiO2/CF) was prepared by sol-gel method with PAN-based carbon fibers as support. Then the TiO2/CF was modified by depositing noble metal Pd particles on its surface by oxidation-redox method at room temperature to obtain carbon-fiber-supported Pd-TiO2 photocatalytic material (Pd-TiO2/CF). XRD analysis shows that TiO2 of anatase was formed on the surface of carbon fibers by sol-gel method. Acid orange II of azo dyes was chosen as the target of photocatalytic degradation, and the photocatalytic activities of TiO2/CF, Pd-TiO2/CF and powder TiO2 of equal load capacity were analyzed by UV absorption spectrum. The results indicate that the photocatalytic activity of powder TiO2 decreased to some extent under the supported condition; Pd particle deposition increased photocatalytic activity efficiently; the Pd-TiO2/CF has much higher photocatalytic activity for Acid orange II solution than TiO2/CF and powder TiO2

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傅雅琴,金旭東,倪慶清.碳纖維負(fù)載Pd-TiO2光催化材料的制備及表征[J].稀有金屬材料與工程,2010,39(6):1075~1078.[Fu Yaqin, Jin Xudong, Ni Qingqing. Preparation and Characterization of Pd-TiO2 Photocatalytic Materials Supported by Carbon Fibers[J]. Rare Metal Materials and Engineering,2010,39(6):1075~1078.]
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  • 收稿日期:2009-06-06
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