Effects of morphology and crystallinity of MoS2 nanocrystals on the catalytic reduction of p-nitrophenol

Li, Yang; Chen, Qiushuang; Zhang, Zhenwei; Li, Qiuhao; Qiao, Xiu-Qing

doi:10.1007/s11051-018-4432-y

Cited by 21 publications

(11 citation statements)

References 67 publications

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“…It is obvious that the Mo, S , Ni, N and O elements are homogeneously distributed in the sample. The presence of N element may be derived from the N doping in the sample, which is consistent with the previous reported literature . The maps of Mo, S, Ni, O, N elements are fit into the sample morphology, indicating the uniform distribution of the N, O‐MoS 2 and NiO.…”

Section: Resultsmentioning

confidence: 99%

“…Discontinuous interplanar distance of 0.94 nm can be observed, which is larger than that of (002) plane of the intrinsic hexagonal MoS 2 (0.62 nm). The enlarged interplanar spacing is caused by the incorporation of N and O atoms . However, no obvious NiO lattice fringes are observed for the weak crystallinity of NiO and coverage of N, O‐MoS 2 , which is consistent with the XRD analysis.…”

Section: Resultsmentioning

confidence: 99%

“…The high resolution O 1s spectrum can be also deconvoluted into two different peaks at 529.9 and 531 eV, corresponding to the lattice oxygen in NiO and the surface adsorbed oxygen groups, respectively. . Finally, the N 1 s spectrum in Figure (f) indicates the presence of N elements in the sample, which may be originated from the doped N atoms of the sample …”

Section: Resultsmentioning

confidence: 99%

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3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

Chen

et al. 2019

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The exploitation of efficient noble metal free catalyst for nitrophenols is of great importance. Herein, 3D hierarchical N, O‐MoS2/NiO hollow microspheres have been successfully prepared via a facile hydrothermal method. Characterizations reveal that the as‐obtained hollow microspheres were assembled by amorphous N, O co‐doped MoS2 and NiO nanosheets. Catalytic experiments show that the hollow microspheres displayed remarkably enhanced catalytic activity for 2, 3, 4‐nitrophenol reduction with the kapp reaching 1.72 min−1 for 4‐nitrophenol, among the best reported non‐noble metal catalysts. The greatly enhanced catalytic activity is attributed to the synergistic effects of abundant exposed catalytic edge sites, intimate P−N heterojunction between NiO and N, O‐MoS2, as well as the hollow porous structure. Moreover, the recovered N, O‐MoS2/NiO hollow microspheres can be reused in successive 8 cycles without much losing its activity. These results suggest that the novel N, O‐MoS2/NiO hollow microspheres had significant application potential for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

Chen

et al. 2019

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“…[1,2] One among them is 4nitrophenol (4-NP) which is used in the manufacturing of drugs, dyes, insecticides, explosives etc. The United States Environmental Protection Agency claims 4-NP as a priority pollutant and limits its concentration in natural water to less than 10 ng/ L. [3,4] Mitigation of the problem through reduction of 4-NP to 4aminophenol is justifiable since the amino product is widely used in various chemical industries and also is less harmful than the nitro counterpart. [4][5][6][7] The same is true for other nitroaromatics such as nitrobenzene, 2-/4-nitroaniline etc.…”

Section: Introductionmentioning

confidence: 99%

Solution Combustion Synthesis of NiS‐NiS₂ Nanoparticles for Catalytic Reduction of Nitro Aromatics

Manjula

Manjunatha²,

Nagashree³

et al. 2023

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Exploring an efficient and economic reductant for nitro aromatics is of great significance for environmental remediation. In this work, nickel sulfide catalysts have been prepared by simple solution combustion method from a mixture of nickel(II) nitrate hexahydrate as oxidant (O) and thiourea as fuel (F) in different ratios. The phase and crystallinity, composition and morphology of synthesized samples were obtained by X‐ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), Raman spectroscopy and Fourier transform infrared (FTIR) techniques. The catalytic efficiency of as synthesized nickel sulfide nanoparticles towards reduction of 4‐nitrophenol (4‐NP) as a model compound using sodium borohydride as the reducing agent was explored. The catalyst prepared with 1 : 3 O/F ratio that composed of NiS and NiS2 phases exhibited highest efficiency towards catalytic reduction of 4‐NP and the rate constant was found to be 0.429 min−1. Further, the catalyst could effectively reduce the nitro group in 2‐nitroaniline, 4‐nitroaniline and picric acid also. Reduced products of 2‐nitroaniline and 4‐nitrophenol were employed for the synthesis of benzimidazole and paracetamol successfully.

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“…In this regard, MoS 2 , a 2D layered material, acts as an efficient candidate in catalytic reduction of p-NP as its basal plane and catalytic edges with increased exposed active sites facilitate the electron transfer process. 19 Recently, various nanostructures of MoS 2 , amorphous [20][21][22] /crystalline [23][24][25][26] and vertically aligned structures 27,28 have been explored to maximize the number of active edge sites. Hybridization of MoS 2 with conducting/ semiconducting/magnetic materials (graphene [28][29][30][31][32] /CoSe 2 (ref.…”

Section: Introductionmentioning

confidence: 99%

Tuning of structural and optical properties with enhanced catalytic activity in chemically synthesized Co-doped MoS₂ nanosheets

et al. 2021

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Effects of morphology and crystallinity of MoS2 nanocrystals on the catalytic reduction of p-nitrophenol

Cited by 21 publications

References 67 publications

3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

Solution Combustion Synthesis of NiS‐NiS₂ Nanoparticles for Catalytic Reduction of Nitro Aromatics

Tuning of structural and optical properties with enhanced catalytic activity in chemically synthesized Co-doped MoS₂ nanosheets

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Effects of morphology and crystallinity of MoS2 nanocrystals on the catalytic reduction of p-nitrophenol

Cited by 21 publications

References 67 publications

3D Hierarchical N, O Co–Doped MoS2/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

3D Hierarchical N, O Co–Doped MoS2/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

Solution Combustion Synthesis of NiS‐NiS2 Nanoparticles for Catalytic Reduction of Nitro Aromatics

Tuning of structural and optical properties with enhanced catalytic activity in chemically synthesized Co-doped MoS2 nanosheets

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3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

3D Hierarchical N, O Co–Doped MoS₂/NiO Hollow Microspheres as Reusable Catalyst for Nitrophenols Reduction

Solution Combustion Synthesis of NiS‐NiS₂ Nanoparticles for Catalytic Reduction of Nitro Aromatics

Tuning of structural and optical properties with enhanced catalytic activity in chemically synthesized Co-doped MoS₂ nanosheets