In the industry, designing synergetic functional nanocatalysts is a desirable strategy to achieve both high activity and selectivity for CO2 hydrogenation. Herein, we fabricate the bicomponent tandem catalysts ZnZrO x /SAPO-34@UIO-n (n = 66, 66-NH2, and 67) to catalyze CO2 conversion into light olefins. Monodispersed SAPO-34 zeolites are used as the core for the growth of the UIO-n shell to obtain its membrane-encapsulated nanocrystal, SAPO-34@UIO-n, which is mixed by grinding with ZnZrO x to obtain the ZnZrO x /SAPO-34@UIO-n catalyst. CO2 hydrogenation yielded highly selective C2–C4 olefins (80%) for the catalyst ZnZrO x /SAPO-34@UIO-66, whereas 57% C2–C4 paraffins were obtained for the catalyst ZnZrO x /SAPO-34 without a UIO-n membrane. The stable UIO-n membrane in the bifunctional catalyst ZnZrO x /SAPO-34@UIO-n adjusted the conversion of CO2 hydrogenation products from paraffins to olefins.

The contribution of defects to electrochemistry is a controversial but practically applicable subject. Meanwhile, it is challenging to obtain precisely a certain nonchemometric single phase in mixed-valence compounds. The precise design of nonchemometric single-phase WO3–x (x = 0, 0.1, 0.28, and 1) mixed-valence metal oxides (MVMOs) was achieved by the gradient intrinsic reduction method, and the correlation between oxygen vacancies and electrochemical anticorrosion protection was explored systematically. Then, the decisive role of periodic oxygen vacancies in electrochemical anticorrosion was confirmed. And the origin was the synergistic reaction of oxygen vacancy-upgraded photocathodic protection, vacancy-induced passivation, and mixed-valence reductive protection, which were brought about by the high oxygen vacancy concentration. Integrating the above three aspects, the WO2.72 MVMO showed the best electrochemical anticorrosion performance by increasing the resistance value to 7.67 times that of the epoxy resin coating. The establishment of a positive correlation between oxygen vacancy and corrosion protection in WO3–x (x = 0, 0.1, 0.28, and 1) materials can not only guide the design of MVMOs but also make an important contribution to the rapid precorrosion performance of the materials.

Influencing the electrochemical properties of materials by modulating luminescence is a fascinating topic. It was found that the corrosion protection of the material could be enhanced by fluorescence. Utilizing the fluorescence of the material, the energy of the photons entering the system is reduced, thereby increasing the durability of the coating. The experimental results showed that the europium-doped zinc oxide solid solution (ZEOSS) composite shielding layer has good weathering resistance. The corrosion inhibition efficiency of the ZEOSS composite shielding layer in the laboratory was 751.8% of that of the epoxy resin coating. The corrosion inhibition efficiency in the atmosphere was further improved to 916.0%. The improved corrosion resistance is attributed to the improvement in energy conversion, electron transport hindrance, and shielding properties of the ZEOSS material. Therefore, it is of great importance to explore the enhanced corrosion inhibition of materials through optical modifications.

Hydroxyapatite (HAP) with point defects was designed under simple liquid-phase conditions. The presence of V O , O − radical vacancies, and −OH radicals achieved the capture of oxygen. The spin state jump of Cu is stimulated to produce more unpaired electrons. Spin-polarized electrons undergo rapid exchange with oxygens, promoting the protonation of oxygen molecules. In addition, the formation of stable chlorapatite in the OH-channel of HAP imparts excellent shielding properties to the material. The unique thin lamellar and more active electrode storage charge surface give it some electron storage capacity, providing good electrochemical cathodic protection for iron substrates. As a result, the impedance value of Cu-HAP as an anticorrosion material was improved by 501.6% compared with that of epoxy resin. The anticorrosion study of transitionmetal-based inhibitors based on the 3d orbital electronic structure depends on spin-dependent electron transfer. This work provides some insight into the development of the corrosion protection field.