Improvement visible-light photocatalytic performance of single-crystalline SnSe1±x NPs toward degradation of organic pollutants

Saray, Abdolali Moghaddam; Yousefi, Ramin; Zare-Dehnavi, Nasser; Jamali‐Sheini, Farid

doi:10.1016/j.solidstatesciences.2019.106044

Cited by 16 publications

(2 citation statements)

References 30 publications

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“…In recent years, SnSe has received significant attention in the field of photocatalysis due to its rapid photo response under visible light irradiation, nontoxicity, small band gap, and abundant terrestrial reserves. Among others, the narrow band gap and the defective energy levels generated in its own structure of SnSe means that it can capture a wide range of visible light, , making up for the shortcomings of existing commercially available photocatalytic materials. Deepthi et al reported that ZnO/SnSe films prepared by spray pyrolysis had a degradation rate of 55% for rhodamine B (RhB) after 150 min of visible light irradiation .…”

Section: Introductionmentioning

confidence: 99%

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Ma,

Yang,

Feng

et al. 2023

ACS Appl. Nano Mater.

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Wide-band-gap semiconductor photocatalytic materials are limited in their application because they can only absorb ultraviolet light, while tin selenide (SnSe) with a narrow band gap is a promising photocatalyst that responds to visible and near-infrared light. Herein, pure SnSe nanopowders with a narrow band gap were synthesized by regulating the reaction temperature in the process of hydrothermal reaction. The powder samples showed self-assembled micrometer flowers of nanosheets and nanorods, which facilitated the degradation of contaminant dyes by increasing the length of the light path. The properties of the photocatalytic degradation of rhodamine B (RhB) by the SnSe powders synthesized at a temperature gradient of 20 °C from 80 to 120 °C were investigated. The results show that the degradation rate of RhB reached 98.2% in 60 min by pure SnSe powder prepared at 100 °C (SnSe-100), which was attributed to the "light trapping effect" created by its unique and intact micron-flower structure. In addition, degradation experiments were also carried out on common organic dyes, in which the decomposition rate of methylene blue reached 92.86%. This can be applied to the treatment of water pollution and provides a quick solution.

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Section: Introductionmentioning

confidence: 99%

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Ma,

Yang,

Feng

et al. 2023

ACS Appl. Nano Mater.

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“…In this work, we demonstrate heterostructures interfacing g-C 3 N 4 with p-type CuFe 2 O 4, which yields optimal energetic offsets resulting in charge separation. 27,28 Type-II heterostructures assembled based on the insertion of CuFe g-C 3 N 4 show excellent electrocatalytic and photocatalytic performance in the presence of hole scavengers. g-C 3 N 4 has been synthesized in various morphologies as nanorods, nanowires, and nanosheets; g-C 3 N 4 nanosheets show particularly notable photocatalytic activity toward water splitting.…”

Section: ■ Introductionmentioning

confidence: 99%

Type-II CuFe₂O₄/Graphitic Carbon Nitride Heterojunctions for High-Efficiency Photocatalytic and Electrocatalytic Hydrogen Generation

Mehtab

Banerjee

Mao

et al. 2022

ACS Appl. Mater. Interfaces

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Solar water splitting has emerged as an urgent imperative as hydrogen emerges as an increasingly important form of energy storage. g-C3N4 is an ideal candidate for photocatalytic water splitting as a result of the excellent alignment of its band edges with water redox potentials. To mitigate electron–hole recombination that has limited the performance of g-C3N4, we have developed a semiconductor heterostructure of g-C3N4 with CuFe2O4 nanoparticles (NPs) as a highly efficient photocatalyst. Visible-light-driven photocatalytic properties of CuFe2O4/g-C3N4 heterostructures with different CuFe2O4 loadings have been examined with two sacrificial agents. An up to 2.5-fold enhancement in catalytic efficiency is observed for CuFe2O4/g-C3N4 heterostructures over g-C3N4 nanosheets alone with the apparent quantum yield of H2 production approaching 25%. The improved photocatalytic activity of the heterostructures suggests that introducing CuFe2O4 NPs provides more active sites and reduces electron–hole recombination. The g-C3N4/CuFe2O4 heterostructures furthermore show enhanced electrocatalytic HER activity as compared to the individual components as a result of which by making heterostructures g-C3N4 with CuFe2O4 increased the active catalytic surface for the electrocatalytic water splitting reaction. The enhanced faradaic efficiency of the prepared heterostructures makes it a potential candidate for efficient hydrogen generation. Nevertheless, the designed heterostructure materials exhibited significant photo- and electrocatalytic activity toward the HER, which demonstrates a method for methodically enhancing catalytic performance by creating heterostructures with the best energetic offsets.

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Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Wang

Huang

et al. 2022

Adv Funct Materials

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Layered SnSe is an emerging class of black phosphorus, which is non-toxic, eco-friendly, and chemically stable. Recently, SnSe nanostructures have triggered more research interest and enabled broad applications beyond demonstrating their great performances on thermoelectricity. However, there are also a great many significant studies of SnSe nanostructures beyond thermoelectricity. SnSe quantum dots, nanosheets, nanowires, and thin films with diverse morphologies have been synthesized using various chemical and physical preparation approaches. SnSe is a multi-phase semiconductor, and its nanostructures endow unique properties, including small electron effective mass, ultralow thermal conductivity, huge anisotropy, and the largest 2D piezoelectric coefficient ever predicted. The versatility of SnSe nanostructures can enable potential applications ranging from ultrafast photonics, logic devices, photodetectors, solar cells, photocatalysis, energy storage, and biology to more cutting-edge interdisciplinary subjects. In this review, the recent advances made in SnSe nanostructures are summarized, covering basics, synthesis, properties, and applications, just giving a passing comment on thermoelectricity. An in-depth perspective on the challenges and prospects of SnSe nanostructures toward broad and practical applications is also given.

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Improvement visible-light photocatalytic performance of single-crystalline SnSe1±x NPs toward degradation of organic pollutants

Cited by 16 publications

References 30 publications

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Type-II CuFe₂O₄/Graphitic Carbon Nitride Heterojunctions for High-Efficiency Photocatalytic and Electrocatalytic Hydrogen Generation

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

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Improvement visible-light photocatalytic performance of single-crystalline SnSe1±x NPs toward degradation of organic pollutants

Cited by 16 publications

References 30 publications

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Highly Enhanced Photocatalytic Properties of Tin Selenide Nanopowders by Microstructure Modulation

Type-II CuFe2O4/Graphitic Carbon Nitride Heterojunctions for High-Efficiency Photocatalytic and Electrocatalytic Hydrogen Generation

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Contact Info

Product

Resources

About

Type-II CuFe₂O₄/Graphitic Carbon Nitride Heterojunctions for High-Efficiency Photocatalytic and Electrocatalytic Hydrogen Generation