Zn1?xCdxS catalysts with Zeolitic Imidazolate Framework-8 (ZIF-8) as the precursor were successfully prepared by ion exchange method, and ability electrochemical properties of a series ZIF-8, ZnS in photocatalytic degradation 2-CP TC investigated. Doping Cd ions was able to modulate band gap width improve utilization visible light photocatalyst. The nanocage hollow structure have better respons...

We propose a mechanism for defect-assisted covalent binding of graphene to the surface of amorphous silica (a-SiO(2)) based on first-principles density functional calculations. Our calculations show that a dioxasilirane group (DOSG) on a-SiO(2) may react with graphene to form two Si-O-C linkages with a moderate activation barrier (≈0.3 eV) and considerable exothermicity (≈1.0 eV). We also exami...