(1. 蘇州科技學(xué)院 江蘇省環(huán)境功能材料重點(diǎn)實(shí)驗(yàn)室，蘇州 215009；
2. 蘇州科技學(xué)院 化學(xué)與生物工程學(xué)院，蘇州 215009；
3. 江蘇大學(xué) 材料科學(xué)與工程學(xué)院，鎮(zhèn)江 212013)
摘 要: 以炭膜包裹的形式將TiO2固載到微納米多孔碳質(zhì)材料表面，制得微納米多孔炭/TiO2復(fù)合材料(MNC-TiO2)。采用X射線衍射儀、掃描電子顯微鏡、透射電子顯微鏡、比表面積及孔徑分析儀和X射線光電子能譜對材料的結(jié)構(gòu)進(jìn)行表征。結(jié)果表明：當(dāng)溶液的蔗糖含量為0.5%、TiO2負(fù)載量為10%，熱處理溫度為750 ℃時，復(fù)合材料具有最好的苯酚處理性能(達(dá)92.7%)；炭膜包裹工藝保證TiO2均勻涂覆在MNC的外表面，抑制TiO2的晶型轉(zhuǎn)變，且降低其禁帶寬度；吸附–催化的協(xié)同作用機(jī)制使得MNC-TiO2對于苯酚的總體處理效果大幅提高，而不是吸附和光催化的簡單疊加。
關(guān)鍵字: 微納米多孔碳質(zhì)材料；膨脹石墨；活性炭；協(xié)同作用機(jī)制
（1. Jiangsu Key Laboratory for Environment Functional Materials,
Suzhou University of Science and Technology, Suzhou 215009, China;
2. Department of Chemistry and Bioengineering, Suzhou Unive）
Abstract:A micro/nano-porous carbon material-TiO2 (MNC-TiO2) was prepared by immobilized carbon coated TiO2 to the surface of MNC. The microstructure of the MNC-TiO2 was analyzed by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption and X-ray photoelectron spectroscopy (XPS). The results show that, at the sucrose content of 0.5% in solution, TiO2 loading of 10% and heat treatment temperature of 750 ℃, the MNC-TiO2 has the best phenol removal efficiency of 92.7%. In addition, MNC-TiO2 still retains the original morphology of MNC. TiO2 were mainly introduced on the outer surface of MNC-TiO2 while little in internal pores. The structure restrains the transformation of TiO2 crystal and reduces its band gap. The adsorption-photocatalytic synergistic mechanism plays the key role in improving the effect of adsorption-photocatalytic degradation. The overall phenol treatment by MNC-TiO2 is not a simple sum of adsorption and photocatalytic activity.
Key words: micro-nano porous carbon material; expanded graphite; activated carbon; synergistic mechanism
