2; 光催化; 介孔材料; 可見光;溶膠-凝膠"/> 2介孔納米材料,利用熱分析(TGA-DSC)、X-射線衍射(XRD)、場發(fā)射掃描電鏡(FESEM)、N2吸附脫附以及紫外-可見吸收光譜等測試手段,研究了制備條件對AgInO2微觀結(jié)構(gòu)的影響因素,并以甲醛為目標(biāo)降解物研究了AgInO2在可見光條件下光催化性能。研究結(jié)果表明：制備的介孔AgInO2具有銅鐵礦結(jié)構(gòu)的晶型,顆粒尺寸約200-500納米,N2吸附脫附非等溫曲線呈IV型,吸收邊位于500-600 nm可見光范圍內(nèi),在可見光照射180 min 的條件下,介孔AgInO2對甲醛的光催化降解率達(dá)93.97%。本研究為介孔AgInO2光催化劑在凈化室內(nèi)空氣的廣泛應(yīng)用奠定了實(shí)驗(yàn)基礎(chǔ)。"/>

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溶膠凝膠-離子交換法制備具有可見光活性介孔AgInO2光催化劑
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環(huán)境光催化應(yīng)用技術(shù)湖南省重點(diǎn)實(shí)驗(yàn)室,環(huán)境光催化應(yīng)用技術(shù)湖南省重點(diǎn)實(shí)驗(yàn)室,環(huán)境光催化應(yīng)用技術(shù)湖南省重點(diǎn)實(shí)驗(yàn)室,,環(huán)境光催化應(yīng)用技術(shù)湖南省重點(diǎn)實(shí)驗(yàn)室

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國家自然科學(xué)基金(51272032)，湖南省自然科學(xué)基金 (2016JJ6008)，湖南省教育廳優(yōu)秀青年科研項(xiàng)目(17B029)


Visible-light-driven photocatalytic activity of mesoporous AgInO2 synthesized by sol-gel combined ion exchange
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HunanSKey Laboratory of Applied Environmental Photocatalysis,Changsha University,Changsha,PR China,HunanSKey Laboratory of Applied Environmental Photocatalysis,Changsha University,Changsha,PR China,HunanSKey Laboratory of Applied Environmental Photocatalysis,Changsha University,Changsha,PR China,School of Chemistry,Physics and Mechanical Engineering,Science and Engineering Faculty,Queensland University of Technology,Brisbane,QLD ,Australia,HunanSKey Laboratory of Applied Environmental Photocatalysis,Changsha University,Changsha,PR China

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NSFC(51272032) and Natural Science Foundation of Hunan Provincial of China (2016JJ6008) and Scientific Research Fund of Hunan Provincial Education Department(17B029)

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    摘要:

    具有可見光響應(yīng)高效光催化劑的設(shè)計(jì)和制備是環(huán)境與能源光催化研究領(lǐng)域的前沿和熱點(diǎn)之一。本文采用溶膠凝膠-離子交換法制備AgInO2介孔納米材料,利用熱分析(TGA-DSC)、X-射線衍射(XRD)、場發(fā)射掃描電鏡(FESEM)、N2吸附脫附以及紫外-可見吸收光譜等測試手段,研究了制備條件對AgInO2微觀結(jié)構(gòu)的影響因素,并以甲醛為目標(biāo)降解物研究了AgInO2在可見光條件下光催化性能。研究結(jié)果表明：制備的介孔AgInO2具有銅鐵礦結(jié)構(gòu)的晶型,顆粒尺寸約200-500納米,N2吸附脫附非等溫曲線呈IV型,吸收邊位于500-600 nm可見光范圍內(nèi),在可見光照射180 min 的條件下,介孔AgInO2對甲醛的光催化降解率達(dá)93.97%。本研究為介孔AgInO2光催化劑在凈化室內(nèi)空氣的廣泛應(yīng)用奠定了實(shí)驗(yàn)基礎(chǔ)。

    Abstract:

    Design and fabrication of highly active photocatalysts under visible light irradiation are one of hotspots in the field of photocatalysis. In this paper, mesoporous AgInO2 nanostructures have been synthesized through a combined sol-gel and ion exchange process. Thermogravimetric analysis-differential scanning calorimeter (TGA-DSC), X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FESEM), N2 adsorption-desorption and ultraviolet-visible (UV-vis) analysis technologies are used to investigate the effects of preparation condition on the microstructure of the AgInO2. The photocatalytic performances have been evaluated by degradation of the formaldehyde under visible light irradiation. The results demonstrate that the mesoporous AgInO2 is a delafossite structure with the uniform size about 200-500 nm and nitrogen adsorption- desorption type IV isotherms, the absorption edge of AgInO2 lies between 500nm and 600 nm in the visible light scope. As-synthesized AgInO2 exhibited remarkably high photocatalytic activity of 93.97% in decomposing formaldehyde for 180 min. These results provide a basic experimental process for preparation novel photocatalyst of AgInO2, which will possess a broad prospect in terms of the applications in improving indoor air quality.

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張向超,許第發(fā),羅 卓,王紅霞,張世英.溶膠凝膠-離子交換法制備具有可見光活性介孔AgInO2光催化劑[J].稀有金屬材料與工程,2018,47(S2):246~249.[Xiangchao Zhang, Difa Xu, Zhuo Luo, Hongxia Wang, Shiying Zhang. Visible-light-driven photocatalytic activity of mesoporous AgInO2 synthesized by sol-gel combined ion exchange[J]. Rare Metal Materials and Engineering,2018,47(S2):246~249.]
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  • 收稿日期:2017-11-27
  • 最后修改日期:2018-08-21
  • 錄用日期:2018-02-01
  • 在線發(fā)布日期: 2018-11-01
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