(1. 江蘇大學(xué) 材料科學(xué)與工程學(xué)院，鎮(zhèn)江 212013；2. 山東大學(xué) 晶體材料國家重點(diǎn)實(shí)驗(yàn)室，濟(jì)南 250100;
3. 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 215011；
4. 蘇州科技學(xué)院 化學(xué)與生物工程學(xué)院，蘇州 215011)
摘 要: 以經(jīng)過預(yù)處理的竹葉為模板合成具有仿生形態(tài)的CeO2材料，研究竹葉與硝酸鈰質(zhì)量比(MTC)及反應(yīng)溫度對沉積效果的影響。利用傅立葉變換紅外光譜(FTIR)、場發(fā)射掃描電子顯微鏡(FESEM)、X射線衍射(XRD)、透射電子顯微鏡(TEM)、N2吸脫附等測試手段對樣品進(jìn)行表征。結(jié)果表明：當(dāng)MTC為1:1時(shí)，在70 ℃下反應(yīng)所得CeO2材料具有精確的分級多孔結(jié)構(gòu)，而六次亞甲基四胺(HMT)作為沉淀劑能促使CeO2前驅(qū)體顆粒在模板表面的預(yù)組裝。采用催化劑用量為0.2 g所合成的氧化鈰材料對濃度為20 mg/L的100 mL酸性品紅溶液進(jìn)行脫色試驗(yàn)，在反應(yīng)120 min后，其脫色率可達(dá)95%以上。
關(guān)鍵字: 仿生形態(tài)；分級多孔；氧化鈰；脫色
（1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;
2. State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, China;
3. Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology,
Suzhou 215011, China;
4. School of Chemistry and Biochemistry, Suzhou University of Science and Technology, Suzhou 215011, China）
Abstract:Biomorphic ceria materials were prepared using bamboo leaves as template. The effects of mass ratio of bamboo leaves to cerium nitrate and reaction temperature were investigated. Fourier transfer infrared spectroscopy (FTIR), field emission scanning electron microscope (FESEM), X-ray diffractometer (XRD), transmission electron microscope (TEM) and N2 adsorption-desorption were used to characterize the sample. The results indicate that when the mass ratio of bamboo leaves to cerium nitrate is 1:1 and the reaction is carried out at 70 ℃, the CeO2 materials obtained have accurately hierarchical porous structure, and HMT as the precipitant can also promote CeO2 precursor particles pre-assembled on the surface of template. The CeO2 material synthesized with the catalyst amount of 0.2 g is used to decolorize 100 mL acid fuchsine solution with the fuchsine concentration of 20 mg/L. The decolorization rate is up to 95% after 120 min.
Key words: biomorphic; hierarchical porous; ceria; decolorization
