Two-dimensional (2D) semiconductors are promising photocatalysts; in order to overcome the relatively low efficiency of single-component 2D photocatalysts, heterostructures are fabricated for effective charge separation. Herein, a 2D heterostructure is synthesized by anchoring nickel nanoparticle-decorated black phosphorus (BP) nanosheets to graphitic carbon nitride (CN) nanosheets (CN/BP@Ni). The CN/BP@Ni heterostructure exhibits an enhanced charge separation due to the tight interfacial interaction and the cascaded electron-transfer channel from CN to BP and then to Ni nanoparticles. Possessing abundant active sites of Ni and P-N coordinate bonds, CN/BP@Ni shows a high visible-light-driven H evolution rate of 8.59 mmol·h·g with the sacrificial agent EtOH, about 10-fold to that of CN/BP. When applying benzyl alcohol to consume photogenerated holes, CN/BP@Ni enables the selective production of benzaldehyde; therefore, two value-added products are obtained in a single closed redox cycle. This work provides new insights into the development of photocatalysts without non-noble metals.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.1c15076 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Diatomic Palladium Catalyst for Enhanced Photocatalytic Water-Donating Transfer Hydrogenation.
J Am Chem Soc
January 2025
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, People's Republic of China.
Diatomic catalysts (DACs) present unique opportunities for harnessing ensemble effects between adjacent metal atoms, thus, expanding the properties of single-atom catalysts (SACs). However, the precise preparation and characterization of this type of catalyst remains challenging. Following a precursor-preselected strategy, here, we report the synthesis of a carbon nitride-supported Pd-DAC, which achieves an excellent yield of 92% for photocatalytic water-donating transfer hydrogenation of 4-vinylphenol to 4-ethylphenol, far exceeding that of other metal species, including Pd single atoms (47%) and nanoparticles (1%).
View Article and Find Full Text PDFFlower-like tailored carbon nitride oligomer as an excellent aggregation-induced electrochemiluminescence emitter for sensitive immunoassay of neuron-specific enolase via dual quenching by bimetallic phenolic networks.
J Colloid Interface Sci
January 2025
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. Electronic address:
The adjustment of the electrochemiluminescence (ECL) of polymeric carbon nitride (CN) is essential for its application in sensitive immunoassays. However, such modification through aggregation-induced emission (AIE) has not yet been reported. Herein, aggregation-induced ECL in CN oligomer (CNO) was induced through the introduction of a rotatable imine moiety, with the resulting material exhibiting excellent performance in the targeted immunodetection of neuron-specific enolase.
View Article and Find Full Text PDFCarbon nitride caught in the act of artificial photosynthesis.
Nat Commun
January 2025
Max Planck Institute of Colloids and Interfaces, Colloid Chemistry Department, Am Mühlenberg 1, 14476, Potsdam, Germany.
Covalent semiconductors of the carbon nitride family are among the most promising systems to realize "artificial photosynthesis", that is exploiting synthetic materials which use sunlight as an energy source to split water into its elements or converting CO into added value chemicals. However, the role of surface interactions and electronic properties on the reaction mechanism remain still elusive. Here, we use in-situ spectroscopic techniques that enable monitoring surface interactions in carbon nitride under artificial photosynthetic conditions.
View Article and Find Full Text PDFEnhanced CO₂ Photoreduction to Methane via Schottky Zn₃N₂/KPCN Heterojunctions for Sustainable Energy Applications.
Environ Res
January 2025
School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China. Electronic address:
The pressing necessity to mitigate climate change and decrease greenhouse gas emissions has driven the advancement of heterostructure-based photocatalysts for effective CO₂ reduction. This study introduces a novel heterojunction photocatalyst formed by integrating potassium-doped polymeric carbon nitride (KPCN) with metallic Zn₃N₂, synthesized via a microwave-assisted molten salt method. The resulting Schottky contact effectively suppresses the reverse diffusion of electrons, achieving spatial separation of photogenerated charges and prolonging their lifetime, which significantly enhances photocatalytic activity and efficiency.
View Article and Find Full Text PDFEnhancing Carbon Monoxide Tolerance in Low-Temperature PEM Fuel Cells through Carbon Nitride Surface Modification.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Article Synopsis
- Low-temperature proton exchange membrane fuel cells (PEMFCs) need very pure hydrogen gas because they are highly sensitive to carbon monoxide (CO) contamination.
- A surface modification technique was developed, applying a 0.5-0.91 nm amorphous carbon nitride layer on PtRu/C substrates, improving hydrogen transport while blocking CO diffusion.
- This modification significantly reduces CO adsorption, maintaining stable catalyst operation for over 20 hours even with high CO levels (1000 ppm), and allows stable performance in PEMFCs with CO concentrations up to 10 ppm, surpassing the standard limit of 0.2 ppm.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!