Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha, 410082, PR China.
ACS Appl Mater Interfaces. 2012 Mar;4(3):1233-8. doi: 10.1021/am2018145. Epub 2012 Feb 28.
A facile, green strategy is explored to synthesize mesoporous Au/Li(4)Ti(5)O(12) spheres based on in situ conversion of titanium glycolate in LiOH aqueous solution. Compared with TiO(2) precursors, titanium glycolate possesses some strengths: (i) fast and easy preparation; (ii) direct reaction with LiOH without introduce of TiO(2) impurity. In the synthesis, the produced chemical waste is only the mixed solvent of acetone and ethylene glycol (EG). Furthermore, acetone and EG in chemical waste can be easily separated by distillation and reused in the next synthesis process due to the great difference between their boiling points. In particular, the as-prepared mesoporous Au/Li(4)Ti(5)O(12) spheres combines the advantages of large specific surface area (166 m(2)/g) and good electronic conduction enhanced by Au nanoparticles when used as an anode electrode material. The electrochemical tests show that the mesoporous Au/Li(4)Ti(5)O(12) spheres display excellent high rate capability and cycling performance.
一种简便、绿色的策略被探索用来合成介孔 Au/Li(4)Ti(5)O(12) 球，该策略基于钛乙二醇原位转化为钛酸四丁酯在 LiOH 水溶液中。与 TiO(2) 前驱体相比，钛乙二醇具有一些优势：（i）快速、易于制备；（ii）直接与 LiOH 反应，无需引入 TiO(2) 杂质。在合成过程中，产生的化学废物仅是丙酮和乙二醇（EG）的混合溶剂。此外，由于丙酮和 EG 的沸点差异很大，化学废物中的丙酮和 EG 可以通过蒸馏很容易地分离出来，并在下次合成过程中重复使用。特别是，所制备的介孔 Au/Li(4)Ti(5)O(12) 球结合了大比表面积（166 m(2)/g）和 Au 纳米粒子增强的良好电子导电性的优点，当用作阳极电极材料时。电化学测试表明，介孔 Au/Li(4)Ti(5)O(12) 球显示出优异的倍率性能和循环性能。
