methods can be further classified to the soft templating method and hard templating method. [57] It has been discovered that some soft matters, such as supramolecular, surfactant micelles, and polymer vesicles can be applied to induce the formation Yanze Wei received his B.S. and M.S. degrees in chemistry from Shandong University, China (2012 and 2015). He then obtained his Ph.D. degree from University of Science Technology Beijing in 2019. He is also a joint Ph.D. student in Institute of Process Engineering, Chinese Academy of Sciences under the supervision of Prof. Dan Wang. His research interests mainly focus on discovering the structure-performance correlation of hollow multishell structured photocatalysts, and mixed-dimensional inorganic/organic heterojunctions. Shouhua Feng an academician of the Chinese Academy of Sciences (2005), obtained his Ph.D. degree in chemistry at Jilin University, P.R. China (1986). He has been engaged in inorganic solidstate chemistry and preparative chemistry for more than 30 years. He has found the triple valence states and atomic scale p-n junctions in perovskite manganese oxides. In recent years, he focuses on the research of functional composite solids and chemical-medicine interdisciplinary.

Precise control of the micro‐/nanostructures of nanomaterials, such as hollow multi‐shelled structures (HoMSs), has shown its great advantages in various applications. Now, the crystal structure of building blocks of HoMSs are controlled by introducing the lattice distortion in HoMSs, for the first time. The lattice distortion located at the nanoscale interface of SnS2/SnO2 can provide additional active sites, which not only provide the catalytic activity under visible light but also improve the separation of photoexcited electron–hole pairs. Combined with the efficient light utilization, the natural advantage of HoMSs, a record catalytic activity was achieved in solid–gas system for CO2 reduction, with an excellent stability and 100 % CO selectivity without using any sensitizers or noble metals.

Constructing delicate nano-/microreactors with tandem active sites in hierarchical architectures is a promising strategy for designing photocatalysts to realize the challenging but attractive CO 2 reduction. Herein, hollow multi-shelled structure (HoMS) based microreactors with spatial ordered hetero-shells are fabricated, which achieve two-step CO 2 -to-CH 4 photoreduction. The multiple inner CeO 2 shells increase the number of active catalytic sites to ensure efficient firststep reaction for generating CO, along with enriching the local CO concentration. The second-step CO-to-CH 4 reaction is consequently induced by amorphous TiO 2 (A-TiO 2 ) composites on the adjacent outer-most shell, thus realizing the CO 2 -to-CH 4 conversion capability using one CeO 2 @CeO 2 /A-TiO 2 HoMS. In-depth explorations in the microreactors provide compositional, structural, and interfacial guidance for engineering HoMS-based microreactors with temporally-spatially ordered shells toward efficient tandem catalysis.

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