发布于 2024-11-15

Utilizing of oxygen and water for hydrogen peroxide (H2O2) production presents an attractive approach for solarto-chemical energy conversion. The rapid recombination of charge carriers generated by individual covalent organic frameworks (COFs) remains a major limitation in the field of H2O2 photoproduction. In this work, we developed binary heterojunction photocatalysts by facilely combining bipyridine-based COF (COF-TpBpy) with flower-like In2S3 nanosheets using an in-situ solvothermal method.

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发布于 2024-11-15

Photocatalytic water splitting for hydrogen production is a sustainable and environmentally friendly technology. However, the rapid recombination of photo-induced electrons and holes results in low hydrogen production activity of photocatalysts. Constructing low-cost and high-efficiency heterojunctions is an imperative strategy to address the current challenges in photocatalytic hydrogen production. This study presents a novel binary heterojunction photocatalyst constructed of ZnIn2S4 nanoflower

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发布于 2024-09-12

The design and modification of heterojunction photocatalysts to enhance efficient interfacial charge transfer and superior photocatalytic performance are fundamental objectives in the field of solar-light-driven energy conversion and production. This study presents a novel S-scheme heterojunction which features lattice-matched morphological hetero-nanostructures, composing of two-dimensional (2D) graphitic carbon nitride (CN) loaded with uniformly distributed and size-consistent 2D nano-rhombohe

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发布于 2024-09-09

The energy crisis has already seriously affected the daily lives of people around the world. As a result, designing efficient catalysts for photocatalytic hydrogen evolution is a promising strategy to energy supply. Co-catalyst modification can significantly enhance the photocatalytic activity of single semiconductors, overcoming limitations posed by their narrow visible light absorption range and high electron-hole recombination rate. MXene-based composites demonstrate immense potential as co-c

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发布于 2024-08-23

Cooperative coupling of alkene epoxidation with in situ H2O2 photosynthesis is a prospective but challenging strategy for maximizing energy utilization and fabricating value-added chemicals. Herein, a covalent assembly of bipyridine-linked covalent organic framework onto VNbC solid-solution MXene heterostructures (COF-TpBpy@VNbC, TBNV-x) has been constructed, exhibiting high catalytic activity for selective styrene epoxidation (as a model reaction) with in situ photogenerated H2O2. Significantly

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发布于 2024-07-05

Hydrogen peroxide (H2O2) is one of the most environmentally friendly and versatile chemical oxidizing agents, with only O2 and H2O as reaction products. It is widely used in environmental protection, industrial production, and medical fields. At present, most of the industrial production of H2O2 adopts anthraquinone oxidation, but there are shortcomings such as pollution of the environment and large energy consumption. Covalent organic frameworks (COFs) are a class of porous crystalline material

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发布于 2024-07-04

The advancement of exceptionally effective catalysts that are photostable is significantly important for the sustainable conversion of solar energy into hydrogen. Combining the strengths of NaNbO3 and CdSe in a fabricated heterojunction has been pursued in photocatalysis to enhance the performance while addressing CdSe’s stability. In this study, nanoparticle-CdSe was deposited on NaNbO3 nanorods via hydrothermal method, and the optimal composite ratio of CdSe/ NaNbO3 heterojunction achieved a p

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发布于 2024-07-04

Against the backdrop of energy scarcities and ecological concerns, the process of photocatalytic hydrogen evolution emerges as a critical method for transforming solar energy into chemical energy. Central to this technology is the crafting of photocatalysts that are not only efficient and durable but also economically viable. The key to creating photocatalysts that boast superior hydrogen production capabilities lies in enhancing the separation and transfer of photo-generated electrons and holes

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发布于 2024-07-04

As a typical perovskite material, NaTaO3 has been regarded as a potential catalyst for photocatalytic hydrogen evolution (PHE) process, due to its excellent photoelectric property and superior chemical stability. However, the photocatalytic activity of pure NaTaO3 was largely restricted by its poor visible-light absorption ability and rapid recombination of photogenerated charge carriers. Therefore, a covalently bonded TpBpy covalent organic framework (COF)/NaTaO3 (TpBpy/NaTaO3) heterostructure

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发布于 2024-02-05

Exclusive Papers in Green Photocatalysis from China: https://www.mdpi.com/journal/catalysts/special_issues/X26X1VO38SSpecial Issue InformationDear Colleagues,In recent years, the global community has intensified its efforts to address environmental challenges, particularly in the context of climate change and sustainable development. China, as one of the worlds largest economies and carbon emitters, has made significant commitments to reduce its carbon footprint and advance green technologies. G

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