Effects of potassium ions and platinum cocatalysts on the photocatalytic performance of Poly(Heptazine Imides)

Chen, Xiaoxiao; Cai, Xu; Li, Yi; Zhang, Yongfan; Lin, Wei

doi:10.1016/j.apsusc.2023.158275

“…[46] Chen et al studied the effect of platinum co-catalysts on the photocatalytic activity of poly(heptazine imides) and found that the Pt co-catalysts with larger load size exhibit better photocatalytic hydrogen evolution activity than small size. [27] In the V-shaped portion of PHI's triangular pores, the Pt co-catalyst was found to be the most reliable loading site. The Pt co-catalysts act as reaction sites for photocatalytic hydrogen evolution and the joint action of Pt cocatalysts and PHI promotes electron transfer, resulting in improved photocatalytic activity.…”

Section: Co-catalystsmentioning

confidence: 95%

“…It has a melting temperature of over 300 °C and is a weakly luminous yellow solid which is soluble in organic solvents. [26] Figure 1(a-b) depict the structures of K-PHI and its proton exchange counterpart H-PHI given by Chen et al [27] Both molecules feature a huge triangular pore in the centre of an extensive 2-dimensional network made up of heptazine units joined by imide bridges. Each of the four K + , denoted by the numbers K1-K4, forms a link with the heptazine units' neighbouring two N and bridging nitrogen in the K-PHI supercell.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Poly‐Heptazine Imide and Based Materials for Photocatalytic Hydrogen Evolution

Rana,

Kumar,

Sharma

et al. 2024

ChemistrySelect

1

0

View full text Add to dashboard Cite

This review presents an overview of recent developments and advancements in the field of photocatalytic hydrogen evolution using poly(heptazine imide) (PHI) and based materials. Photocatalytic hydrogen evolution (PHE) has received great amount of attention because of its potential as a clean and sustainable energy source and PHI based materials have emerged as promising candidates for this purpose due to their distinct structural properties, improved light absorption, charge separation and reduced recombination. This review discusses the essential concepts of PHE and the potential of poly(heptazine imide) materials and their derivatives as photocatalysts and also the limitations of these materials in photocatalytic activity. It addresses the synthetic routes and strategies adopted to enhance the photocatalytic activity of these materials including surface modifications, band engineering, doping, loading co‐catalysts and composites & heterojunction construction. Furthermore, the recent works in photocatalytic H2 evolution using PHI and based materials have been summarized and discussed. Additionally, we examined the challenges and future outlooks in this field, emphasizing the need for scalable and cost‐effective production methods.

show abstract

Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Jing,

Li,

Chen

et al. 2024

Angewandte Chemie

1

0

View full text Add to dashboard Cite

As organic semiconductor materials gain increasing prominence in the realm of photocatalysis, two carbon‐nitrogen materials, poly (heptazine imide) (PHI) and poly (triazine imide) (PTI), have garnered extensive attention and applications owing to their unique structure properties. This review elaborates on the distinctive physical and chemical features of PHI and PTI, emphasizing their formation mechanisms and the ensuing properties. Furthermore, it elucidates the intricate correlation between the energy band structures and various photocatalytic reactions. Additionally, the review outlines the primary synthetic strategies for constructing PHI and PTI, along with characterization techniques for their identification. It also summarizes the primary strategies for enhancing the photocatalytic performance of PHI and PTI, whose advantages in various photocatalytic applications are discussed. Finally, it highlights the promising prospects and challenges pertaining to PHI and PTI as photocatalysts.

show abstract

Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Jing,

Li,

Chen

et al. 2024

Angew Chem Int Ed

1

0

View full text Add to dashboard Cite

As organic semiconductor materials gain increasing prominence in the realm of photocatalysis, two carbon‐nitrogen materials, poly (heptazine imide) (PHI) and poly (triazine imide) (PTI), have garnered extensive attention and applications owing to their unique structure properties. This review elaborates on the distinctive physical and chemical features of PHI and PTI, emphasizing their formation mechanisms and the ensuing properties. Furthermore, it elucidates the intricate correlation between the energy band structures and various photocatalytic reactions. Additionally, the review outlines the primary synthetic strategies for constructing PHI and PTI, along with characterization techniques for their identification. It also summarizes the primary strategies for enhancing the photocatalytic performance of PHI and PTI, whose advantages in various photocatalytic applications are discussed. Finally, it highlights the promising prospects and challenges of PHI and PTI as photocatalysts.

show abstract

Effects of potassium ions and platinum cocatalysts on the photocatalytic performance of Poly(Heptazine Imides)

Cited by 10 publications

References 69 publications

Recent Advances in Poly‐Heptazine Imide and Based Materials for Photocatalytic Hydrogen Evolution

Recent Advances in Poly‐Heptazine Imide and Based Materials for Photocatalytic Hydrogen Evolution

Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Contact Info

Product

Resources

About