Boettcher Shannon W, Fan Jie, Tsung Chia-Kuang, Shi Qihui, Stucky Galen D
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
Acc Chem Res. 2007 Sep;40(9):784-92. doi: 10.1021/ar6000389. Epub 2007 Apr 27.
Mesostructured non-silicate oxides, with well-defined organization on the 2-50 nm size scale, may play a pivotal role in advancing vital disciplines such as catalysis, energy conversion, and biotechnology. Herein, we present selected methodologies for utilizing the sol-gel process, in conjunction with organic-directed assembly, to synthesize a variety of mesostructured oxides. The nature of the inorganic precursor is critical for this process. We discuss the development of general routes for yielding stable, nanoscopic, hydrophilic, inorganic precursors compatible with organic co-assembly. In particular, we highlight the use and characterization of organic-acid-modified transition metal oxide sol-gel precursors that allow for the synthesis and processing of designer mesostructured oxides such as titania hybrids for optical applications and porous multicomponent metal oxides useful for catalysis.
介孔结构的非硅酸盐氧化物在2 - 50纳米尺寸范围内具有明确的组织结构，可能在推动催化、能量转换和生物技术等重要学科发展方面发挥关键作用。在此，我们介绍了一些利用溶胶 - 凝胶法结合有机导向组装来合成各种介孔结构氧化物的选定方法。无机前驱体的性质对该过程至关重要。我们讨论了生成与有机共组装兼容的稳定、纳米级、亲水性无机前驱体的通用路线的发展。特别地，我们重点介绍了有机酸改性的过渡金属氧化物溶胶 - 凝胶前驱体的使用和表征，这些前驱体可用于合成和加工设计型介孔结构氧化物，如用于光学应用的二氧化钛杂化物以及对催化有用的多孔多组分金属氧化物。
