Soft and hard templates assisted synthesis mesoporous CuO/g-CN heterostructures for highly enhanced and accelerated Hg(II) photoreduction under visible light.

Herein, triblock copolymer surfactant (F127) and mesoporous silica (MCM-41) as soft and hard templates were employed to synthesize of mesoporous CuO/g-CN heterostructures with large surface areas for Hg(II) photoreduction in existence of formic acid as a holes sacrificial. TEM image for mesoporous CuO/g-CN indicated that CuO NPs are homogeneously distributed with spherical shape in particle size ~5 nm onto the surface of g-CN. Mesoporous 2%CuO/g-CN heterostructure was achieved a high Hg(II) photoreduction rate of 628.

Novel double functional protection of cephalostatin analogues using a gas-free chlorination method.

Herewith, we report on a method that allows to simultaneously protect both the ∆ bond and the carbonyl group of the symmetrical bis-steroidal diketone . We found that environmentally friendly and gas-free chlorination is ideally suited to achieve this goal. This method was discovered during our efforts to methoxylate in a solution of dichloromethane and basic methanol in the presence of diacetoxy iodobenzene.