Concentrating photo-thermo-organized single-atom and 2D-raft Cu catalyst for full-spectrum solar harmonic conversion of aqueous urea and urine into hydrogen
Ma, Rong Su, Hui Sun, Jie Li, Donghui Zhang, Zhenwen Wei, Jinjia
Concentrating photo-thermo-organized single-atom and 2D-raft Cu catalyst for full-spectrum solar harmonic conversion of aqueous urea and urine into hydrogen
Ma, Rong 1Su, Hui 1Sun, Jie 1Li, Donghui 1Zhang, Zhenwen Wei, Jinjia
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. Xi An Jiao Tong Univ
折叠
Abstract
Solar-driven hydrogen evolution from urea-rich wastewater is a highly promising energy-environment bi-functional synthetical solution, while the intrinsic contradict between spectral energy quantity and quality of sunlight limits the existing wavelength-dependent technologies. Herein, we report the first demonstration of concentrated photo-thermo-catalysis (CPTC) technology that regulates the spectral energy quantity and quality and creates the synergy between photon and thermal effects to achieve full-spectrum solar harmonic conversion of aqueous urea and urine into hydrogen. The 50% enhanced CPTC performance compared with sole photo-/thermo-catalysis is achieved due to: (1) Catalyst structure optimization. Single Cu atom and 2D Cu raft are acquired on defect-rich TiO2 support by photo-thermo-organized metal-support interaction; (2) Reaction pathway expansion. The breakthrough against thermodynamic barrier of urea to hydrogen is realized by the novel cascade reactions of thermally-triggered urea hydrolysis and thermally-assisted ammonia photo-decomposition. The technological viability is convincingly presented through outdoor test with artificial urine under real sunlight.
NSTL
Elsevier