Highly active NiCo alloy hexagonal nanoplates with crystal plane selective dehydrogenation and visible-light photocatalysis
Uniform NiCo alloy hexagonal nanoplates were synthesized through a formaldehyde molecule controlled growth process. They are investigated as a crystal plane selective dehydrogenation catalyst for potential hydrogen energy applications and visible-light synergistic catalysts for nano-ZnO. The resultant NiCo alloy hexagonal nanoplates exert highly efficient crystal plane selective catalytic activity and long-term stability for the hydrolytic dehydrogenation of aqueous ammonia borane under ambient atmosphere at room temperature. Additionally, they exhibit crystal plane selective visible-light-driven enhanced catalysis enhancement for nano-ZnO towards the degradation of methylene blue solution. These results suggest the importance of the rational design and synthesis of NiCo alloy hexagonal nanoplates for high performance hydrogen energy and visible-light-driven catalysis applications. The Royal Society of Chemistry 2012.
Zhou, Shiqing,Wen, Ming,Wang, Na,Wu, Qingsheng,Wu, Qingnan,Cheng, Liya
Ultrasound-assisted synthesis of alkali metals diselenides (M2Se2) and their application for the gram-scale preparation of 2,2’-diselenobis(benzoic acid)
A simple and efficient method to convert elemental selenium into alkali metal diselenide was developed. The use of selenium and metal borohydride in a molar ratio of 1 to 0.125 in the presence of base, under “on water” conditions and ultrasound activation permitted the reduction of Se into Se22- to be completed within minutes. Thus obtained metal diselenide aqueous solution was then used in the multigram scale synthesis of 2,2’-diselenobis(benzoic acid) (DSBA) a valuable building block for the development of diverse and pivotal selenorganic compounds.