为了探讨TiO2/氧化石墨烯纳米复合物的制备技术及产物结构的变化规律,采用微波法将钛酸丁酯引入季铵盐/氧化石墨插层复合物的层间域内,钛酸丁酯经原位水解在氧化石墨层间生成Ti(OH)4,再经焙烧处理制备TiO/2氧化石墨烯纳米复合物.采用XRD、SEM、FTIR和XPS对原料和不同阶段生成的产物的结构及变化、微观形貌、氧化官能团特征和化学键特点进行表征.结果表明,钛酸丁酯在原位水解过程中将氧化石墨剥离为氧化石墨烯;TiO2/氧化石墨烯纳米复合物中锐钛矿型TiO2的形成温度比纯TiO2的提高了约100℃;TiO2/氧化石墨烯纳米复合物中的TiO2和纯TiO2的平均晶粒尺寸都随焙烧温度的升高而增大,但前者的平均晶粒尺寸均小于相同温度焙烧处理的纯TiO2的;在TiO2/氧化石墨烯纳米复合物中氧化石墨烯与TiO2之间形成Ti-O-C键,并抑制了锐钛矿型TiO2的形成,而氧化石墨烯作为阻隔层则阻碍了锐钛矿晶粒的长大.
参考文献
| [1] | Xiao Huang;Xiaoying Qi;Freddy Boey .Graphene-based composites[J].Chemical Society Reviews,2012(2):666-686. |
| [2] | Paredes JI;Villar-Rodil S;Martinez-Alonso A;Tascon JMD .Graphene oxide dispersions in organic solvents[J].Langmuir: The ACS Journal of Surfaces and Colloids,2008(19):10560-10564. |
| [3] | Sasha Stankovich;Richard D. Finer;SonBinh T. Nguyen .Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(15):3342-3347. |
| [4] | 周建伟,王储备,禇亮亮,张明瑛,史磊.TiO2/石墨烯纳米复合材料制备及其光催化性能研究[J].人工晶体学报,2013(04):762-767. |
| [5] | Zhang, H.;Lv, X.;Li, Y.;Wang, Y.;Li, J. .P25-graphene composite as a high performance photocatalyst[J].ACS nano,2010(1):380-386. |
| [6] | YuLin Min;Kan Zhang;Wei Zhao.Enhanced chemical interaction between TiO_2 and graphene oxide for photocatalytic decolorization of methylene blue[J].Chemical engineering journal,2012:203-210. |
| [7] | Wang, D.;Choi, D.;Li, J.;Yang, Z.;Nie, Z.;Kou, R.;Hu, D.;Wang, C.;Saraf, L.V.;Zhang, J.;Aksay, I.A.;Liu, J. .Self-assembled tio2-graphene hybrid nanostructures for enhanced Li-ion insertion[J].ACS nano,2009(4):907-914. |
| [8] | Kangfu Zhou;Yihua Zhu;Xiaoling Yang .Preparation of graphene-TiO2 composites with enhanced photocatalytic activity[J].New Journal of Chemistry,2011(2):353-359. |
| [9] | Chao Chen;Mingce Long;Hui Zeng .Preparation, characterization and visible-light activity of carbon modified TiO2 with two kinds of carbonaceous species[J].Journal of molecular catalysis, A. Chemical,2009(1/2):35-41. |
| [10] | Jeong, HK;Lee, YP;Jin, MH;Kim, ES;Bae, JJ;Lee, YH .Thermal stability of graphite oxide[J].Chemical Physics Letters,2009(4/6):255-258. |
| [11] | 万臣,彭同江,孙红娟,黄桥.不同氧化程度氧化石墨烯的制备及湿敏性能研究[J].无机化学学报,2012(05):915-921. |
| [12] | 黄桥,孙红娟,杨勇辉.氧化石墨的谱学表征及分析[J].无机化学学报,2011(09):1721-1726. |
| [13] | 张琳,王爱军,陈胜利.液相沉积法处理TiO2纳米晶膜对其光电性能的影响[J].人工晶体学报,2012(01):31-35. |
| [14] | 古朝建,彭同江,孙红娟,吕霞,罗利明.TiO2/蒙脱石纳米复合材料结构组装过程与表征[J].人工晶体学报,2012(03):771-778,797. |
| [15] | Chou, PW;Wang, YS;Lin, CC;Chen, YJ;Cheng, CL;Wong, MS .Effect of carbon and oxygen on phase transformation of titania films during annealing[J].Surface & Coatings Technology,2009(6/7):834-839. |
| [16] | Ren WJ;Ai ZH;Jia FL;Zhang LZ;Fan XX;Zou ZG .Low temperature preparation and visible light photocatalytic activity of mesoporous carbon-doped crystalline TiO2[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(3/4):138-144. |
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