Recent Advances on Porous Materials for Synergetic Adsorption and Photocatalysis

Abstract

Porous photocatalysts are promising materials capable of simultaneously adsorbing and oxidizing/reducing target species, showing great potentials in environmental remediation and energy generation. This review offered a comprehensive overview of the recent progress in design, fabrication, and applications of porous photocatalysts, including carbon-based semiconductors, metal oxides/sulfides, metal-organic frameworks, and adsorbent-photocatalyst hybrids. The fundamental understanding of the structure-performance relationships of porous materials together with the in-depth insights into the synergetic effects between adsorption and photocatalysis was presented. The strategies to further improve the photocatalytic activity of porous photocatalysts were proposed. This review would provide references and outlooks of constructing efficient porous materials for adsorptive and photocatalytic removal of pollutants and energy production.

Highly Efficient and Selective Visible‐Light Driven Photoreduction of CO2 to CO by Metal–Organic Frameworks‐Derived NiCoO Porous Microrods

“…Significatively, the interconnected porous architecture with high degree of irregular arrangement provides the feasibility of nanoparticles passing through the interior of catalysts, which can improve the contact efficiency between nanoparticles and catalysts with the help of organic liquid flow during photocatalystic reaction. [ 36 ] Figure 3a–e presents the selected area electron diffraction (SAED) patterns of five samples and all of them show typical polycrystalline diffraction rings, indicating the polycrystalline features of the sample products. The dominant diffraction ring patterns of MR‐CO∼MR‐N 0.3 C 0.7 O samples could be identified as (311) and (511) planes of cubic Co 3 O 4 phase while MR‐N 0.5 C 0.5 O∼MR‐NO samples show the typical crystal planes of (111), (200), (220), and (311) planes of cubic NiO phase, which is also consistent with the XRD results.…”

“…Significatively, the interconnected porous architecture with high degree of irregular arrangement provides the feasibility of nanoparticles passing through the interior of catalysts, which can improve the contact efficiency between nanoparticles and catalysts with the help of organic liquid flow during photocatalystic reaction. [36] Figure 3a The information about the Brunauer-Emmett-Teller (BET) specific surface area and porosity of the fabricated MOFs derivatives were obtained from nitrogen adsorption/desorption tests. As shown in Figure 4a, the isotherms of the five samples can be classified as type IV isotherm model with distinct hysteresis loops at high relative pressures based on Brunauer-Deming-Deming-Teller (BDDT) theory, indicating the existence of mesoporous structures.…”

Shining light on ZnIn2S4 photocatalysts: Promotional effects of surface and heterostructure engineering toward artificial photosynthesis

“…The main reason enabling MOFs to be a suitable platform for the catalytic centers incorporation is found to be its porous structure, in which the pores smoothen the diffusion of substrates as well as products through the MOFs channels. [203][204][205] Therein, UiO-66 octahedral nanoparticles, after hybridizing with ZnIn 2 S 4 , are found giving an AQE of 9.84% under 420 nm light. UiO-66 fosters the photocatalytic activity of ZnIn 2 S 4 by forming a desirable heterojunction with the fine ZnIn 2 S 4 nanosheets (Figure 12C,D).…”

“…As a porous solid material constructed by metal ions/metal‐containing clusters and organic building blocks, MOFs have been studied in various photocatalytic applications such as water splitting and carbon reduction. The main reason enabling MOFs to be a suitable platform for the catalytic centers incorporation is found to be its porous structure, in which the pores smoothen the diffusion of substrates as well as products through the MOFs channels 203–205 . Therein, UiO‐66 octahedral nanoparticles, after hybridizing with ZnIn 2 S 4 , are found giving an AQE of 9.84% under 420 nm light.…”

Molecular-Level Insights on the Facet-Dependent Degradation of Perfluorooctanoic Acid

“…Several attempts have been made to boost the removal efficiency of PFOA via fabricating hybrid composite photocatalysts, for example, doping with foreign metal ions or constructing heterojunctions . The main limitation of the multicomponent involved photocatalytic process, however, is the increased complexity in design and operation, − which would significantly increase the cost for environmental remediation.…”