采用浸渍改性法将水杨酸与精氨酸同时接枝到纳米TiO2表面制备了水杨酸和精氨酸共改性二氧化钛颗粒(TiO2-SA/Arg),并采用傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、热失重分析(TGA)、紫外-可见光漫反射光谱(UV-Vis DRS)、扫描电子显微镜(SEM)、高倍透射电子显微(HRTEM)、表面接触角测试及粒度分布分析等技术对材料的形貌、结构及性能进行表征,同时研究了催化剂对硝基苯的吸附性能及在油-水界面的吸附能力.结果表明:水杨酸和精氨酸分别以螯合和桥连结构稳定修饰到TiO2表面,与未改性TiO2相比,水杨酸和精氨酸共改性TiO2疏水性及分散性更好,对硝基苯的吸附能力更强,并可在油-水界面稳定吸附形成O/W型Pickering乳液.研究了Pickeing乳液光催化体系对硝基苯的去除能力,与悬浮体系相比,改性颗粒稳定的Pickering乳液体系对高浓度硝基苯去除效率较高.
参考文献
| [1] | 汪滨;张广心;郑水林;刘泽宇.煅烧温度对TiO2/硅藻土晶型结构与光催化性能的影响[J].无机材料学报,2014(4):382-386. |
| [2] | 刘国聪;李海斌;董辉.La掺杂TiO2介孔微球的超声水热合成和光催化性能[J].无机材料学报,2011(7):739-746. |
| [3] | 张青红.二氧化钛基纳米材料及其在清洁能源技术中的研究进展[J].无机材料学报,2012(1):1-10. |
| [4] | G. Lagaly;M. Reese;S. Abend.Smectites as colloidal stabilizers of emulsions II. Rheological properties of smectite-laden emulsions[J].Applied clay science,19995/6(5/6):279-298. |
| [5] | Wei Wu;Shuang Gao;Weixia Tu;Jianfeng Chen;Pengyuan Zhang.Intensified photocatalytic degradation of nitrobenzene by Pickering emulsion of ZnO nanoparticles[J].颗粒学报（英文版）,2010(05):453-457. |
| [6] | Hiroaki Ueda;Sachika Hashimoto;Teruyuki Nakato.Pickering Emulsions Prepared by Layered Niobate K4Nb6O_(17) Intercalated with Organic Cations and Photocatalytic Dye Decomposition in the Emulsions[J].ACS applied materials & interfaces,20128(8):4338-4347. |
| [7] | Wanying Zhai;Gaiping Li;Ping Yu.Silver Phosphate/Carbon Nanotube-Stabilized Pickering Emulsion for Highly Efficient Photocatalysis[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201329(29):15183-15191. |
| [8] | Clarizia, Laura;Spasiano, Danilo;Di Somma, Ilaria;Marotta, Raffaele;Andreozzi, Roberto;Dionysiou, Dionysios D..Copper modified-TiO2 catalysts for hydrogen generation through photoreforming of organics. A short review[J].International journal of hydrogen energy,201430(30):16812-16831. |
| [9] | 吕玉珍;张胜男;杜岳凡;陈牧天;李成榕.油酸修饰对纳米二氧化钛在变压器油中分散性的影响[J].无机材料学报,2013(6):594-598. |
| [10] | 姚超;高国生;林西平;杨绪杰;陆路德;汪信.硅烷偶联剂对纳米二氧化钛表面改性的研究[J].无机材料学报,2006(2):315-321. |
| [11] | 太惠玲;蒋亚东;谢光忠;赵明静.聚吡咯/二氧化钛复合薄膜的制备及气敏性研究[J].无机材料学报,2007(3):524-528. |
| [12] | Nan Wang;Lihua Zhu;Kejian Deng.Visible light photocatalytic reduction of Cr(VI) on TiO2 in situ modified with small molecular weight organic acids[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20103/4(3/4):400-407. |
| [13] | Li, S.;Zheng, F.;Cai, S.;Liang, W.;Li, Y..A visible light assisted photocatalytic system for determination of chemical oxygen demand using 5-sulfosalicylic acid in situ surface modified titanium dioxide[J].Sensors and Actuators, B. Chemical,2013:280-285. |
| [14] | Cropek D;Kemme PA;Makarova OV;Chen LX;Rajh T.Selective photocatalytic decomposition of nitrobenzene using surface modified TiO2 nanoparticles[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200822(22):8311-8318. |
| [15] | Selective photoreduction of nitrobenzene to aniline on TiO_2 nanoparticles modified with amino acid[J].Journal of hazardous materials,20101/3(1/3):994. |
| [16] | Nakayama N;Hayashi T.Preparation of TiO2 nanoparticles surface-modified by both carboxylic acid and amine: Dispersibility and stabilization in organic solvents[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,20081/3(1/3):543-550. |
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