Zhang T1, Zhao H, He S, Liu K, Liu H, Yin Y, Gao C.
ACS Nano. 2014 Jul 22;8(7):7297-304. doi: 10.1021/nn502349k. Epub 2014 Jul 7.Ultrasmall gold nanoparticles (us-AuNPs, <3 nm) have been recently recognized as surprisingly active and extraordinarily effective green catalysts. Their stability against sintering during reactions, however, remains a serious issue for practical applications. Encapsulating such small nanoparticles in a layer of porous silica can dramatically enhance the stability, but it has been extremely difficult to achieve using conventional sol-gel coating methods due to the weak metal/oxide affinity. Read More