▎ 摘　　要

Powder type catalysts aren't often easily recycled after use and resulted in water pollution for hydrogen production by NaBH4 hydrolysis. Based on this, Ru-CoP is firstly anchored on the surface of graphene oxide (GO) by in-situ growth of ZIF-67, water etching, phosphating and loading Ru, then a novel composite aerogel-type catalyst is fabricated with chitosan (CS), GO and Ru-CoP@GO by the facile freeze-drying method. The results show that the hydrogen generation rate (HGR) of Ru-CoP@GO is 7200mLmin1 g 1 , catalyst and the activation energy is 47.7 kJ mol-1, which is not only the sheet catalyst with high catalytic perfor- mance, but also the excellent filler for composite aerogel, attributed to the strong interaction between Ru and Co species. Meanwhile, by regulating the amounts of CS, GO and Ru-CoP@GO, the loss rate of Ru- CoP@GO/CS aerogel is only 23% at the hydrogen generation rate (4712mLmin 1 g1 ) after five cycles of catalyst catalytic testing, which is due to structural coupling action and the formation of amide bond between Ru- CoP@GO, CS and GO, demonstrating an excellent structural stability. This work provides a precise and controllable strategy for the development of monolithic catalysts.(c) 2023 Elsevier B.V. All rights reserved.