Harbin Normal University

Conjugated microporous polymers (CMPs) featuring donor-acceptor (D-A) structures have garnered significant attention for their potential in hydrogen production, primarily due to their excellent charge transfer efficiency and large sp. surface area.However, the uncontrollable composition in D-A structure severely limits the improvement of photocatalytic activity.In this study, employing pyrene as the donor, dibenzothiophene-S-S-dioxide (BTDO, A₁) and 1-methyl-1,2,4-triazole (TAME, A₂) as acceptors, the innovative tri-component CMP photocatalysts featuring a donor-acceptor1-acceptor2 (D-A₁-A₂) configuration were developed and created.By regulating the ratio of D and A, as well as BTDO and TAME in the polymer backbone, the optimized copolymer Py-BTDO-TAME-2 exhibits superior hydrogen production activity (27.53 mmol g^-1h^-1) in the absence of Pt co-catalyst under visible light, owing to the broad light absorption, high sp. surface area and enhanced charge separation capability.The findings of this study indicate that utilizing a D-A₁-A₂ structural design method can greatly improve the photocatalytic performance of CMP photocatalysts.

The complexity and severity of water pollution caused by population growth and climate change is a major global challenge.Solar-driven interfacial water evaporation (SDIE) technol. combined with photocatalysis offers a green, sustainable, and efficient way to produce clean water.This review comprehensively investigates the recent research progress on photocatalysis-assisted SDIE, focusing on photocatalytic and photothermal mechanisms and their synergistic effects.Various photocatalysts, including metal oxides (MOs), metal sulfides or other metal-based photocatalysts (MS or MX₂), metal-organic frameworks (MOFs), covalenorg. frameworks (COFs), graphite carbon nitride (g-C₃N₄), and Transition metal carbides and nitrides (MXenes) are discussed in detail, emphasizing their structural characteristics, working principles, and performance advantages when integrated into evaporators.Addnl., the practical applications of these technologies in fields such as wastewater treatment and green energy development are explored, highlighting their potential for environmental protection and energy development.Specifically, we examine photocatalytic water evaporators as Janus structures, aerogels, hydrogels, and foam structures, and discuss their unique advantages and challenges.Furthermore, the potential of using photocatalysis for hydrogen peroxide (H₂O₂) generation, decomposition, and ammonia (NH₃) conversion in the SDIE process is explored, highlighting the versatility and potential of this technol.Continued research and advancement of photocatalysis-assisted SDIE technol. will demonstrate enormous potential in environmental protection and energy development.In the future, we look forward to overcoming existing technol. challenges through multidisciplinary collaboration to enable solar photocatalytic interfacial water evaporation technol. to play a greater role in addressing the global water crisis.

Herein, an integrative solid adsorbent of [AHOPMIm]Cl with hydroxyl and amino groups functional sites modified TS-1 mol. sieve is designed and fabricated for efficient CO2 adsorption.The optimal [AHOPMIm]Cl/TS-1 exhibits 73% enhancement in CO2 adsorption capacity compared with the TS-1 mol. sieve, even outperforming other state of the art adsorbent systems.The greatly improved CO2 adsorption capacity is mainly attributed to the strong adsorption of amino groups on the ionic liquids surface, which can form low-temperature stable amino ester species.Moreover, it is preserved that the hydroxyl groups on the surface of ionic liquids can form stable hydrogen bonds with oxygen atoms in CO2, and coordinate with amino groups to capture CO2 from different directions based on in situ DRIFTS and DFT.The porous TS-1 mol. sieve provides a structural basis for the uniform dispersion, effective support, and enhanced CO2 adsorption capacity of ionic liquidsA new design concept for constructing ionic liquid-based composite adsorbent with dual functional sites using TS-1 mol. sieve as a carrier is provided, and the avenues for efficient CO2 adsorption are paved.