Some Thoughts on the Status of Sol–Gel Processing of Silicates and Organically Modified Silicates

ABSTRACT Over the past 50 years, the sol–gel process has advanced both scientifically and technologically. In this review, the process as applied to silicates is examined with a focus on its successes and its potential for further implementation. The emphasis is on applications, rather than basic science. At times, the product is identified explicitly as being a sol–gel processed material. In other cases, sol–gel processing is inferred based on the precursors and is one of many steps in producing the product.