Noble-metal-free molybdenum phosphide co-catalyst loaded graphitic carbon nitride for efficient photocatalysis under simulated irradiation

Tang, Junying; Yang, Dong; Zhang, Weiguo; Guo, Rui‐tang; Pan, Weiguo; Huang, Chun‐Ying

doi:10.1016/j.jcat.2018.12.009

Cited by 78 publications

(35 citation statements)

References 55 publications

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“…Carbides/nitrides/borides/phosphides-g-C 3 N 4 interfaces. Classified as co-catalysts, Ni 3 C, 96 Ti x C y , 48,106,198 Ni 3 N, 199,200 Ni x B y , 201 Ni x P y , 49,202 Co x P x , 183,203 Cu x P, 95 MoP, 111 FeP, 46 NiCoP, 204 and so on, have been loaded onto g-C 3 N 4 nanosheets to generate the corresponding composites. It is worth mentioning that Rong Xu et al 183 confirmed the presence of Co-N bonds at the interfaces between g-C 3 N 4 and CoP by using XPS and XANES measurements.…”

Section: Two-phase Interfacesmentioning

confidence: 99%

“…After consulting many literature reports, we have found that there are only a small fraction of reports that contain theoretical calculations for g-C 3 N 4 -based composite photocatalysts as compared with the database, taking P-g-C 3 N 4 , 121 MoP-g-C 3 N 4 , 111 CoP-g-C 3 N 4 , 75 CoS x -g-C 3 N 4 , 152 WS 2 -g-C 3 N 4 , 222 InSeg-C 3 N 4 , 223 WO 3 -g-C 3 N 4 , 103 TiO 2 -g-C 3 N 4 , 101 MnO 2 -g-C 3 N 4 , 181 SrTiO 3 -g-C 3 N 4 , 38 BiPO 4 -g-C 3 N 4 , 224 Bi 2 WO 6 -g-C 3 N 4 , 225 Bi 4 Ti 3 O 12 -g-C 3 N 4 , 87 and so on, as research objects. We divided the research into three levels.…”

Section: Theoretical Analysis Of the Interfacesmentioning

confidence: 99%

“…The first involves separately calculating the two involved components to reveal the Fermi level and charge/electron behaviors, without disclosing the interfacial space and chemical structures. For example, Zhou et al 111 employed the MoP-g-C 3 N 4 heterojunction as a research object (Fig. 23a).…”

Section: Theoretical Analysis Of the Interfacesmentioning

confidence: 99%

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Interfaces of graphitic carbon nitride-based composite photocatalysts

Zhu

Qiao

Tan

et al. 2020

Inorg. Chem. Front.

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Section: Two-phase Interfacesmentioning

confidence: 99%

Section: Theoretical Analysis Of the Interfacesmentioning

confidence: 99%

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Interfaces of graphitic carbon nitride-based composite photocatalysts

Zhu

Qiao

Tan

et al. 2020

Inorg. Chem. Front.

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“…Photocatalysis, as a potential route to relieving environmental and energy issues, has been intensively applied for pollutant degradation [1][2][3][4], water splitting [5][6][7], and solar energy conversion [8][9][10][11]. As a typical metal sulfide, ZnS, which has a large band gap (3.6~3.8 eV), exhibits excellent photocatalytic capacity, owing to its strong oxidation and high negative potentials of excited electrons [12,13].…”

Section: Introductionmentioning

confidence: 99%

N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region

et al. 2019

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In this work, N-doped carbon-coated ZnS with a sulfur-vacancy defect (ZnS@N-C) was performed for the visible-light-driven photodegradation of tetracycline hydrochloride (TCH). The obtained ZnS@N-C exhibited enhanced photocatalytic activity compared with ZnS for TCH removal. Among these ZnS@N-C composites, ZnS@N-C-3 with N-doped content of 3.01% (100 nm) presented the best visible-light photocatalytic activity and superior long-term photocatalytic stability after five cycle times for TCH removal in the visible light region. This may be ascribed to the interface between the N-doped carbon shell and ZnS with a sulfur-vacancy defect for efficient charge transfer and the restrained recombination of charge carriers. Electron spin resonance (ESR) results indicate that the ·O 2 radical plays a crucial role in the enhanced photocatalytic activity of ZnS@N-C-3. Nanomaterials 2019, 9, 1657 2 of 13 composites between carbon and semiconductors. To further enhance the electron transfer and extend the visible light harvesting region, carbon doped with N atoms can adjust the work function of carbon and induce charge delocalization [23-26]. Hsu et al. have reported that sandwich-like hydrogenated C-doped anatase TiO 2 nanocrystals/N-doped carbon dots@layer/rutile TiO 2 nanorod arrays have exhibited efficient photoelectron-chemical activity of water oxidation [27]. This may be attributed to the N-doped carbon dots being the photosensitizer of long wavelength light-harvesting and the N-doped carbon layer being the conductive layer of charge transport toward the current collector. Wang et al. have also confirmed that N-doped carbon dots/g-C 3 N 4 can enhance visible-light photo-degradation activity for indomethacin due to the efficient charge separation and band gap narrowing of N-doped carbon dots [28]. Core-shell structured ZnO@N-doped carbon can efficiently adsorb and photodegrade methylene blue in the visible light region [29]. Electrons generated from nitrogen are transferred from the N-doped carbon surface to adsorbed oxygen, forming reactive radicals in the photocatalytic system [30-34]. In addition, surface polarity of N-doped carbon can promote dispersion in aqueous solution. However, few works have focused on the enhanced photocatalytic activity of ZnS with sulfur-vacancy defects using N-doped carbon coating. This work focuses on the synthesis of ZnS with an N-doped carbon coating (ZnS@N-C) and its sulfur-vacancy effect on visible-light photocatalytic activity for the removal of tetracycline hydrochloride (TCH). Reported photocatalysts such as CuInS 2 /Mg(OH) 2 [35], ZnIn 2 S 4 /BiPO 4 [36], AgBr/Bi 2 WO 6 [37], BiOI/g-C 3 N 4 /CeO 2 [38], and TiO 2 / BiOCl [39] are efficient heterojunctions for the visible-light-driven degradation of TCH. Differently from these compositions, N-doped carbon serves as the electron capture, facilitating the separation of electron-hole pairs. In this strategy, N-doped carbon is generated from the decomposition of cyanamide and coated on the surface of ZnS nano-particles, which are further tr...

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“…), lithium and rare-earth metal complexes. Due to the numerous advantages over conventional transition metal catalysis, organo-catalytic methodologies have become an attractive synthetic tool for asymmetric catalysis [24,25]. More efforts about the research on butadiene-isoprene copolymers were currently devoted to the rare-earth catalytic system.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Butadiene-Isoprene Copolymer with High Vinyl Contents by Al(OPhCH3)(i-Bu)2/MoO2Cl2∙TNPP

et al. 2019

Polymers

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In this study, a butadiene-isoprene coordination polymerization was initiated by a binary molybdenum (Mo)-based catalytic system consisting of modified MoO2Cl2 as the primary catalyst, triethyl aluminum substituted by m-cresol as the co-catalyst and tris(nonyl phenyl) phosphate (TNPP) as the ligand. The effects of the amount of catalyst and type of co-catalyst were investigated in detail. Experimental results indicated that when the butadiene-isoprene coordination polymerization was initiated by the binary Mo-based catalytic system, the monomer conversion could reach 90%. The resulting butadiene units were primarily based on 1,2-structures, and the reactivity ratios of butadiene and isoprene were 1.13 and 0.31, respectively. The reaction in the catalytic system was attributed to the non-ideal and non-constant ratio copolymerization. When the addition of isoprene monomers was relatively low, the isoprene units on the butadiene-isoprene copolymers were primarily based on the 1,2- and 3,4-structures. Moreover, the orientation of active centers to 1,2- and 3,4-structures gradually decreased with an increase in the addition of isoprene monomers, which resulted in the generation of high vinyl butadiene-isoprene copolymers.

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Noble-metal-free molybdenum phosphide co-catalyst loaded graphitic carbon nitride for efficient photocatalysis under simulated irradiation

Cited by 78 publications

References 55 publications

Interfaces of graphitic carbon nitride-based composite photocatalysts

Interfaces of graphitic carbon nitride-based composite photocatalysts

N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region

Preparation of Butadiene-Isoprene Copolymer with High Vinyl Contents by Al(OPhCH3)(i-Bu)2/MoO2Cl2∙TNPP

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