High-efficiency utilization of CO2 facilitates the reduction of CO2 concentration in the global atmosphere and hence the alleviation of the greenhouse effect. The catalytic hydrogenation of CO2 to produce value-added chemicals exhibits attractive prospects by potentially building energy recycling loops. Particularly, methanol is one of the practically important objective products, and the catalytic hydrogenation of CO2 to synthesize methanol has been extensively studied. In this review, we focus on some basic concepts on CO2 activation, the recent research advances in the catalytic hydrogenation of CO2 to methanol, the development of high-performance catalysts, and microscopic insight into the reaction mechanisms. Finally, some thinking on the present research and possible future trend is presented.

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Fusion of fiber surfaces leads to simultaneous enhancements in the strength, modulus, and toughness of electrospun polymeric membranes.

In order to improve the sustained release properties of carriers and explore the effect of copolymer sequence structures on sustained release, 5 groups of 12 block copolymers (12-BCPs) with different sequences were prepared using 4 monomers and the microstructure was controlled by changing the sequence of monomers. The results show that each polymer chain contains an average of 228 monomers and the proportion of 4 monomers basically conforms to 1:1:1:1. The release kinetics of fluorescein sodium (FS) as a drug model molecule was detected by UV–vis spectroscopy, and the result proves that sequence microstructures have great effect on their sustained release behaviors. The five groups of copolymers all show high initial loading (49.6–74.6 mg/g) and long sustained release time (18–30 days). The copolymer with the largest monodisperse self-assembly size (13.40 μm) in which the block sequence is 2-hydroxyethyl acrylate/styrene/4-vinylpyridine/tert-butyl acrylate has the optimal drug loading capacity (74.6 mg/g) compared with others. At the same time, it owns the most stable release state and the longest sustained release time (30 days).