Investigation of optical and device parameters of colloidal copper tungsten selenide ternary nanosheets

Yıldırım, Murat; Sarılmaz, Adem; Özel, Faruk

doi:10.1007/s10854-017-7970-7

Cited by 16 publications

(10 citation statements)

References 41 publications

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“…According to TEM images, Cu2WSe4 catalyst displayed square and rectangular sheet-like shapes with approximately 50 nm of edge sizes [41]. Selected area electron diffraction (SAED) pattern shows that Cu2WSe4 has a single crystalline and well crystallized [40,43]. In addition, elemental composition and distribution were examined by SEM-EDX techniques with area mapping (Figure 1d).…”

Section: Characterization Of Cu2wse4mentioning

confidence: 99%

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Aslan

2021

Cumhuriyet Science Journal

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Two phase reactions are the analogy of biomembranes, which are polarized by Galvani potential difference at interface between two immiscible electrolyte solutions. Energy conversion reactions such as oxygen reduction reaction or hydrogen evolution reaction have been great drawn attention at soft interfaces due to the similarity of natural biochemical reactions. In this study, copper-based ternary metal selenide (copper tungsten selenide, Cu2WSe4) was first reported in the literature for hydrogen evolution reaction catalysis at the water/1,2-dichloroethane interface. The synthesized Cu2WSe4 catalyst is characterized by morphological and structural techniques. Catalytic activity of Cu2WSe4 at liquid-liquid interfaces by lipophilic decamethylferrocene as the sacrificial electron donor agent. This catalytic activity was tracked by four-electrode voltammetry at the water/1,2-dichloroethane interface and biphasic reactions monitored by gas chromatography. The rates of the hydrogen evolution reaction catalyzed by the Cu2WSe4 were found to be approximately 160-fold than the rate for the reaction performed in the absence of a catalyst.

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Section: Characterization Of Cu2wse4mentioning

confidence: 99%

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Aslan

2021

Cumhuriyet Science Journal

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“…Cu 2 MoS 4 single layer, which can be obtained by atomic Se doping and ultrasonication for 1 h, exhibited dramatically enhanced electrocatalytic hydrogen evolution performance . The optical and dielectric properties of Cu 2 WS 4 and Cu 2 WSe 4 thin film have been studied by adjusting the thickness of nanoparticles . However, there are few reports about the ultrathin Cu 2 MX 4 nanomaterials applied in the photocatalytic reactions.…”

Section: Photocatalytic Applications Of Cu2mx4mentioning

confidence: 99%

“…[55] The optical and dielectric properties of Cu 2 WS 4 and Cu 2 WSe 4 thin film have been studied by adjusting the thickness of nanoparticles. [88,89] However, there are few reports about the ultrathin Cu 2 MX 4 nanomaterials applied in the photocatalytic reactions. Thus, it is highly desirable to Reproduced with permission.…”

Section: Layer Effectmentioning

confidence: 99%

Recent Advances of Ternary Layered Cu₂MX₄ (M = Mo, W; X = S, Se) Nanomaterials for Photocatalysis

et al. 2019

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Photocatalytic technologies, based on efficient light absorption and conversion, have emerged as a viable solution to overcome the problems related to energy and the environment. Development of new cost‐effective materials coupled with the green synthesis routes in order to replace the noble metal‐based catalysts is critical to overcoming this challenge. In this review, a brief summary of the recent progress in ternary layered Cu2MX4 (M = Mo, W; X = S, Se) nanomaterials and their photocatalytic performance is presented. First, the structural configurations with different phases and crystallinity are described, as well as various experimental synthesis methods of Cu2MX4 nanomaterials. Thereafter, the effect of morphology modulation, facet selection, and multicomponent hybridization on the catalytic activity of Cu2MX4 is elucidated. In addition, a proposal for highly‐efficient Cu2MX4 photocatalysts is presented via rational designing strategies for realizing their specific applications in the fields of photodegradating organic pollutants, water splitting, and other photocatalytic reactions. Finally, the existing research challenges related to ternary Cu2MX4 layers along with future prospects are discussed in detail.

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“…In recent years, copper based ternary chalcogenides with narrow band gap have been studied, such as CuInS 2 [9], Cu 2 WSe 4 [10], SrCuSbS 3 [11], Cu 3 SbS 3 [12]. As we know, CuSbS 2 (CAS) is a direct band gap material and exhibits tunable band gap of 1.38-1.86 eV with a high absorption coefficient (> 10 4 cm −1 ) in visible light [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A novel CuSbS2–TiO2 nanoparticles synergy structure for photocatalysis

Zhi

Wang

Zhang

et al. 2020

J Mater Sci: Mater Electron

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In this work, a synergy structure to improve the photocatalytic properties of materials was proposed. CuSbS 2 nanoparticles synthesized by microwave irradiation method were dispersed in TiO 2 sol to form CuSbS 2-TiO 2 nanoparticles. The properties of composite materials with different TiO 2 sol concentration were investigated by XRD, XPS, etc. The results indicated the as-synthesized CuSbS 2 nanoparticles exhibited chalcostibite structure and the TiO 2 showed anatase phase. The CuSbS 2-TiO 2 nanoparticles had high absorbance in the visible light and good photocatalysts for the photodegradation reaction of Rhodamine B (RhB). When TiO 2 sol concentration was 0.23 mol/L, the sample possessed a photocatalytic degradation rate of 0.002 min −1 for the degradation of RhB, which was 3 times higher than that by the bare amorphous TiO 2 (0.0007 min −1).

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Investigation of optical and device parameters of colloidal copper tungsten selenide ternary nanosheets

Cited by 16 publications

References 41 publications

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Recent Advances of Ternary Layered Cu₂MX₄ (M = Mo, W; X = S, Se) Nanomaterials for Photocatalysis

A novel CuSbS2–TiO2 nanoparticles synergy structure for photocatalysis

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Investigation of optical and device parameters of colloidal copper tungsten selenide ternary nanosheets

Cited by 16 publications

References 41 publications

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Hydrogen evolution by ternary metal selenide at biomembrane-like soft interfaces

Recent Advances of Ternary Layered Cu2MX4 (M = Mo, W; X = S, Se) Nanomaterials for Photocatalysis

A novel CuSbS2–TiO2 nanoparticles synergy structure for photocatalysis

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Recent Advances of Ternary Layered Cu₂MX₄ (M = Mo, W; X = S, Se) Nanomaterials for Photocatalysis