Construction of phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride isotype heterojunction and their enhanced photoactivity

Li, Jiaqi; Qi, Yi; Mei, Yuqing; Ma, Shouchun; Li, Qi; Xin, Baifu; Yao, Tongjie; Wu, Jie

doi:10.1016/j.jcis.2020.01.102

Cited by 47 publications

(15 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference in band gap energy and band edge positions of pristine g-C 3 N 4 and doped carbon nitride isotype heterojunction can afford better interlayer charge separation. , Such isotype heterojunction can be synthesized using two approaches: (1) in situ method creating doped sheets within materials, and (2) mixing doped and nondoped g-C 3 N 4 after synthesis or growth of one on another by annealing. g-C 3 N 4 /doped g-C 3 N 4 type 2D/2D vdW structures can afford better charge separation due to lattice match and differential band structure. − Since inorganic 2D semiconductors are hard to synthesize and in many cases get photobleached under solar excitation, it is desirable to develop a stable heterojunction between carbon nitride and the doped carbon nitride to resolve the stability issue while minimizing synthesis cost. − Qin et al reported the synthesis of S-doped g-C 3 N 4 and porous g-C 3 N 4 isotype heterojunction via an in situ approach using thiourea as a sulfur source for improved visible light H 2 evolution . In another work, carbon nitride nanosheets (CNS) were prepared by thermal annealing of trithiocyanuric acid (TCA), and then CN was grown on these sheets by further annealing with dicyandiamide.…”

Section: Carbon Nitride–carbon Nitride 2d/2d Vdw Structuresmentioning

confidence: 99%

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

et al. 2021

View full text Add to dashboard Cite

The surging demand for energy and staggering pollutants in the environment have geared the scientific community to explore sustainable pathways that are economically feasible and environmentally compelling. In this context, harnessing solar energy using semiconductor materials to generate charge pairs to drive photoredox reactions has been envisioned as a futuristic approach. Numerous inorganic crystals with promising nanoregime properties investigated in the past decade have yet to demonstrate practical application due to limited photon absorption and sluggish charge separation kinetics. Two-dimensional semiconductors with tunable optical and electronic properties and quasi-resistance-free lateral charge transfer mechanisms have shown great promise in photocatalysis. Polymeric graphitic carbon nitride (g-C3N4) is among the most promising candidates due to fine-tuned band edges and the feasibility of optimizing the optical properties via materials genomics. Constructing a two-dimensional (2D)/2D van der Waals (vdW) heterojunction by allies of 2D carbon nitride sheets and other 2D semiconductors has demonstrated enhanced charge separation with improved visible photon absorption, and the performance is not restricted by the lattice matching of constituting materials. With the advent of new 2D semiconductors over the recent past, the 2D/2D heterojunction assemblies are gaining momentum to design high performance photocatalysts for numerous applications. This review aims to highlight recent advancements and key understanding in carbon nitride based 2D/2D heterojunctions and their applications in photocatalysis, including small molecules activation, conversion, and degradations. We conclude with a forward-looking perspective discussing the key challenges and opportunity areas for future research.

show abstract

Section: Carbon Nitride–carbon Nitride 2d/2d Vdw Structuresmentioning

confidence: 99%

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The increased lifetime in the PMC composite suggests that the photogenerated electrons modified by Pt and MoS 2 cocatalysts offered more opportunities to participate in the H + reduction and thereby enhanced the photocatalytic performance. 48,49 According to the abovementioned characterization and discussion, a proposed mechanism of the enhancement of photocatalytic hydrogen production performance over PC and PMC composites is presented in Figure 11. For the PC composite, the photogenerated electrons will transfer to the surface of Pt nanoparticles since the conduction band of g-C 3 N 4 was more negative than the Fermi level of Pt, which improved the photocatalytic performance of g-C 3 N 4 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Ding

Song

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Construction of effective charge separation and transfer channels is a critical issue in photocatalytic energy conversion. In this work, ultrasmall fine Pt nanoparticles and MoS 2 nanosheets were deposited on the surface of g-C 3 N 4 as cocatalysts. The presence of MoS 2 can effectively induce the structural reconstruction of g-C 3 N 4 and the redistribution of surface charges. The enriched electrons localized in the S and N atoms were conductive to the reduction of Pt 4+ and the promotion of the metal− support interaction, thus boosting charge separation and transfer. As a result, the obtained Pt/MoS 2 /g-C 3 N 4 composite provided a highly photocatalytic hydrogen activity, up to 1595.3 μmol h −1 with an AQE of 30.9% at 435 nm, 87.6 times higher than g-C 3 N 4 . This work may provide some insights into the rational design of high-efficient composite photocatalysts for solar energy conversion.

show abstract

“…Similar conclusions are also reported by other research groups. 35–37 Doping of other non-metallic elements, such as B, 38–48 P, 49–59 S, 60–66 and so on, can also be characterized by XPS measurements.…”

Section: Confirmation Of Doped Elements In G-cnmentioning

confidence: 99%

“…Similar conclusions are also reported by other research groups. [35][36][37] Doping of other non-metallic elements, such as B, [38][39][40][41][42][43][44][45][46][47][48] P, [49][50][51][52][53][54][55][56][57][58][59] S, [60][61][62][63][64][65][66] and so on, can also be characterized by XPS measurements. Although the bond types of heteroatoms can be easily determined by the XPS peak positions, these characteristic peaks can be affected by some factors.…”

Section: Introductionmentioning

confidence: 99%

Element-doped graphitic carbon nitride: confirmation of doped elements and applications

Zhang

Wang

et al. 2021

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

Construction of phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride isotype heterojunction and their enhanced photoactivity

Cited by 47 publications

References 54 publications

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Element-doped graphitic carbon nitride: confirmation of doped elements and applications

Contact Info

Product

Resources

About