Phosphorous doped carbon nitride nanobelts for photodegradation of emerging contaminants and hydrogen evolution

Wang, Shuaijun; He, Fengting; Zhao, Xiaoli; Zhang, Jinqiang; Ao, Zhimin; Wu, Hong; Yu, Yin; Shi, Lei; Xu, Xinyuan; Zhao, Chaocheng; Wang, Shaobin; Sun, Hongqi

doi:10.1016/j.apcatb.2019.117931

Cited by 187 publications

(55 citation statements)

References 62 publications

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“…Also, it can be used as a linking agent, whereby doping C into g-C 3 N 4 intrinsically bridges the existing in-plane defects, broadening the light-absorption range of the photocatalyst. 15,16 In addition, hydroxylamine sulfate can be used as a material structure regulator to form tubular g-C 3 N 4 . Ethanolamine reacts with melamine in the hydrothermal process to form an intermediate (Fig.…”

Section: Resultsmentioning

confidence: 99%

UV-Vis-NIR full-range-responsive carbon-rich carbon nitride nanotubes for enhanced photocatalytic performance

Yao

Zhang

et al. 2022

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

UV-Vis-NIR full-range-responsive carbon-rich carbon nitride nanotubes for enhanced photocatalytic performance

Yao

Zhang

et al. 2022

New J. Chem.

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“…2,34,35 One general obstacle for the growth and PEC performance of the CN layer lies in the difficulty in preparing a CN/fluorine-doped tin oxide coated glass (FTO) substrate interface with intimate contact. Though great efforts have been made on the modification of these CN precursors to give a better intrinsic photoresponse via heteroatom doping, [36][37][38][39][40][41][42] the introduction of foreign functional groups, 43,44 acid pretreatment 40,45 and precursor design strategy, 21,[46][47][48] the weak CN/substrate interface dramatically impedes the charge collection and thus leads to decreased photoresponse. 1 Moreover, the choice of monomers and growth conditions will determine the quality of CN films for PEC application, i.e., defect states can strongly affect charge separation and overall performance.…”

Section: Introductionmentioning

confidence: 99%

Controllable Synthesis of Carbon Nitride Films with Type-II Heterojunction for Efficient Photoelectrochemical Cells

et al. 2020

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A simple, straightforward growth method of polymeric carbon nitride (CN) layers on a conductive substrate, with excellent photoelectrochemical activity owing to the formation of a type-II heterojunction by combining two distinct chemical growth methods is reported. The first layer consists of CN prepared from the calcination of a melem-melamine (MeM) adduct; the utilization of MeM enables the preparation of a processable paste which can be easily cast on the conductive substrate. To prepare the second layer, melamine vapor is introduced during calcination. After calcination, two well-connected CN layers with different electronic properties are formed, leading to the formation of a type-II heterojunction. The new CN films exhibit excellent photoelectrochemical properties with a photocurrent density up to 383 μA cm -2 at 1.23 V vs. RHE as well as an acceptable stability over 9 h in 10% (v/v) TEOA-containing 0.1 M KOH aqueous solution, thanks to the enhanced charge separation under illumination. Moreover, the CN films demonstrate good photoelectrochemical activity over a wide pH range, with photocurrent densities of 133, 80, and 118 μA cm -2 in 0.1 M KOH, 0.1 M Na2SO4, and 0.5 M H2SO4 aqueous solutions in the absence of any sacrificial agent, respectively.

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“…In addition, the weakening of the PCN (002) diffraction peak may be caused by the inclusion of hetero-element P during thermal phosphorization, which enlarged the interlayer spacing and reduced the thickness of the graphitic structure. The further decrease in the diffraction intensity of metal-containing samples (Co@PCN) may be attributed to chemical coupling between PCN and metal phosphide clusters [ 35 , 42 ]. Figure 1 d shows the TG-DSC curve of a mixture of urea and diammonium hydrogen phosphate (DHP).…”

Section: Resultsmentioning

confidence: 99%

Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane

Shen

Chen

2021

Molecules

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Nitrogen-containing flame retardants have been extensively applied due to their low toxicity and smoke-suppression properties; however, their poor charring ability restricts their applications. Herein, a representative nitrogen-containing flame retardant, polyheptanazine, was investigated. Two novel, cost-effective phosphorus-doped polyheptazine (PCN) and cobalt-anchored PCN (Co@PCN) flame retardants were synthesized via a thermal condensation method. The X-ray photoelectron spectroscopy (XPS) results indicated effective doping of P into triazine. Then, flame-retardant particles were introduced into thermoplastic polyurethane (TPU) using a melt-blending approach. The introduction of 3 wt% PCN and Co@PCN could remarkably suppress peak heat release rate (pHRR) (48.5% and 40.0%), peak smoke production rate (pSPR) (25.5% and 21.8%), and increasing residues (10.18 wt%→17.04 wt% and 14.08 wt%). Improvements in charring stability and flame retardancy were ascribed to the formation of P–N bonds and P=N bonds in triazine rings, which promoted the retention of P in the condensed phase, which produced additional high-quality residues.

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Phosphorous doped carbon nitride nanobelts for photodegradation of emerging contaminants and hydrogen evolution

Cited by 187 publications

References 62 publications

UV-Vis-NIR full-range-responsive carbon-rich carbon nitride nanotubes for enhanced photocatalytic performance

UV-Vis-NIR full-range-responsive carbon-rich carbon nitride nanotubes for enhanced photocatalytic performance

Controllable Synthesis of Carbon Nitride Films with Type-II Heterojunction for Efficient Photoelectrochemical Cells

Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane

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