Structural Distortion of g-CN Induced by a Schiff Base Reaction for Efficient Photocatalytic H Evolution.

Photocatalytic H evolution by water splitting is a promising approach to address the challenges of environmental pollution and energy scarcity. Graphitic carbon nitride (g-CN) has emerged as a star photocatalyst because of its numerous advantages. To address the limitations of traditional g-CN, namely its inadequate visible light response and rapid recombination of photogenerated carriers, we employed a schiff base reaction to synthesize -C=N- doped g-CN.

K-N Bridge-Mediated charge separation in hollow g-CN Frameworks: A bifunctional photocatalysts towards efficient H and HO production.

The development of bifunctional photocatalysts for enhancing hydrogen (H) and hydrogen peroxide (HO) production from water is essential in addressing environmental and energy issues. However, the practical implementation of photocatalytic technology is still constrained by the inadequate separation of photo-generated charge carriers. Herein, potassium (K) atoms are introduced into the interlayers of graphitic carbon nitride (g-CN) with a hollow hexagonal structure (K-TCN) and are coordinated with N atoms in adjacent layers.

Achieving high carrier separation over BiOIthrough Ni doping for improved photocatalytic COreduction.

Photocatalytic COreduction is considered to be an appealing way of alleviating environmental pollution and energy shortages simultaneously under mild condition. However, the activity is greatly limited by the poor separation of the photogenerated carriers. Ion doping is a feasible strategy to facilitate the charge transfer.

Synergy of MoO with Pt as Unilateral Dual Cocatalyst for Improving Photocatalytic Hydrogen Evolution over g-C N.

Pt is usually used as cocatalyst for g-C N to produce H by photocatalytic splitting of water. However, the photocatalytic performance is still limited by the fast recombination of photo-generated electrons and holes, as well as the poor absorption of visible light. In this work, MoO /g-C N composites were prepared, in which MoO synergetic with Pt photo-deposited during H evolution reaction worked as unilateral dual cocatalyst to improve the photocatalytic activity.

Filling Polyoxoanions into MIL-101(Fe) for Adsorption of Organic Pollutants with Facile and Complete Visible Light Photocatalytic Decomposition.

Transition metal-substituted polyoxometalates (POMs) were filled into a metal-organic framework (MOF) to construct a series of POM@MOF composites (PMoO@MIL-101, PMoVO@MIL-101, PMoVO@MIL-101). The composite materials possess ultra-high adsorption ability, especially for PMoVO@MIL-101, with an adsorption capacity of 912.5 mg·g for cationic antibiotic tetracycline in wastewater, much higher than that of isolated MIL-101(Fe) and the commonly used adsorption materials, such as activated carbon and graphene oxide.

Bismuth-Based Photocatalysts for Solar Photocatalytic Carbon Dioxide Conversion.

Photocatalytic CO conversion into solar fuels is an effective means for simultaneously solving both the greenhouse effect and energy crisis. In the past ten years, bismuth-based photocatalysts for environmental remediation have experienced a golden period of development. However, solar photocatalytic CO conversion has only been developed over the past five years and, until now, no reviews have been published on bismuth-based photocatalysts for the photocatalytic conversion of CO .

Oxygen Vacancy Engineering of Bi O Cl for Boosted Photocatalytic CO Conversion.

Unearthing an ideal model to describe the role of defect sites for boosting photocatalytic CO reduction is rational and necessary, but it still remains a significant challenge. Herein, oxygen vacancies are introduced on the surface of Bi O Cl photocatalyst (Bi O Cl -OV) for fine-tuning the photocatalytic efficiency. The formation of oxygen vacancies leads to a new donor level near the conduction band minimum, which enables a faster charge transfer and higher carrier density.

Photocatalytic Mechanism Regulation of Bismuth Oxyhalogen via Changing Atomic Assembly Method.

Exciton and carrier photocatalytic processes have been proved in bismuth oxyhalogen photocatalysts. But, there are no reports about how to regulate the different mechanisms to improve photocatalytic activity for different reaction. Here, we found that the photocatalytic mechanisms could be regulated by changing the assembly method of bismuth, oxygen, and halogen atoms.

Noble-metal loading reverses temperature dependent photocatalytic hydrogen generation in methanol-water solutions.

Co-catalysts and sacrificing reagents are important components in artificial photocatalytic processes. Here we demonstrate that noble-metal loading reverses the temperature dependent photocatalytic activity trends of photocatalytic hydrogen (H) generation with methanol as a sacrificing reagent. This finding suggested that visible and infrared light can enhance photocatalytic H generation via a heat effect over noble-metal/photocatalysts.

Synthesis of BiOI@(BiO)2CO3 facet coupling heterostructures toward efficient visible-light photocatalytic properties.

In this paper, BiOI@(BiO)2CO3 facet coupling heterostructures were synthesized via exfoliation and ion exchange, and characterized by X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra and valence-band XPS spectra. With the reaction time increasing, more BiOI can be transformed to (BiO)2CO3, and BiOI@(BiO)2CO3 facet coupling heterostructures were obtained. The photocatalytic results showed that BiOI@(BiO)2CO3 displays much higher photocatalytic activity than BiOI and (BiO)2CO3 under visible-light.