Influence of growth and photocatalytic properties of copper selenide (CuSe) nanoparticles using reflux condensation method

Sonia, S.; Kumar, P. Suresh; Mangalaraj, D.; Ponpandian, N.; Viswanathan, C.

doi:10.1016/j.apsusc.2013.07.022

Cited by 51 publications

(11 citation statements)

References 28 publications

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“…The selected area diffraction (SAED) pattern shows discontinuous rings with bright spots, which indicates that the nanoparticles formed are crystalline. The fact that some rings appear in higher intensities (220) indicates that the QD has a certain preferred orientation of the Cu 2‐x Se planes, in contrast to random orientation …”

Section: Resultsmentioning

confidence: 99%

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

et al. 2020

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Copper selenide quantum dot (CuSeQD) materials functionalised with mercaptoalkanoic acids {3-mercaptopropionic acid (3-MPA), 6-mercaptohexanoic acid (6-MHA) and mercaptosuccinic acid (MSA)} were synthesized by a reproducible aqueous colloidal technique at room temperature. The impact of the capping agents on the size and the crystallinity of the CuSeQD materials, were investigated by small angle X-ray scattering (SAXS) and X-ray diffraction (XRD) spectroscopic techniques, respectively. SAXS results confirmed that 6-MHA-CuSeQD had the smallest average particle core size when dried, whereas MSA-CuSeQD had the smallest size in aqueous solution, though with a tendency to aggregate. Dynamic light scattering (DLS) measurements indicated strong bonding of the capping agents to CuSe particles, with MSA being the weakest binding agent, as confirmed by comparatively, low Zeta potential(ζ = À 31.1 mV) and high polydispersity index (0.469) values. UV-Vis absorption studies confirmed a large blue shift of the band gap for the QD compared to the bulk material, with characteristic absorption band (λ) and direct band gap (E gd ) values being (λ = 435 nm, E gd = 8.0 eV), (λ = 400 nm, E gd = 5.6 eV) and (λ = 340 nm, E gd = 4.0 eV), for 6-MHA-CuSeQD, 3-MPA-CuSeQD and MSA-CuSeQD, respectively. As supported by the formal potential values for 6-MHA-CuSeQD (E 0' � 120 mV), 3-MPA-CuSeQD (E 0' � 159 mV) and MSA-CuSeQD (E 0' � 183 mV), the smaller the particle size, the lower the potential required for the application of the quantum dots in an electron transfer process.[a] L.

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Section: Resultsmentioning

confidence: 99%

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

et al. 2020

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“…The SAED pattern indicates that the CuSe dendrites are of single-crystalline nature (Figure e). Meanwhile, the XRD spectrum of the CuSe shows the sharp diffraction peaks at 26.44, 27.94, 31.08, 45.58, 49.84, 56.28, and 69.98°, which can be index to (101), (102), (006), (110), (108), (116), and (208) planes of hexagonal CuSe (Figure f) …”

Section: Resultsmentioning

confidence: 99%

“…Nitrogen-rich core/shell magnetic structures have been prepared for selective adsorption and separation of anionic dyes . Graphene oxide and nanocomposite hydrogels have also been developed for highly efficient removal of dyes. − The complex synthesis and modification processes are the main challenges in current studies, which limit their large-scale production and further industrial applications. − Besides, traditional photocatalytic degradation of dyes is conducted under strong UV or visible light irradiation. , Therefore, developing a new type of nanomaterial on a large scale with strong adsorption and natural daylight-driven photocatalytic activities remains highly desirable.…”

Section: Introductionmentioning

confidence: 99%

“…Copper selenides (CuSe), owing to their superiorities in localized surface plasmon resonance, tunable electronic properties, and photothermal transduction efficiency, are a rising star family with current available applications in photoacoustic imaging, solar cells, and photothermal therapy. − In addition, CuSe have also proven to be excellent photocatalysts in solar energy conversion and environmental remediation because of their low cost, environmental friendliness, and good photocatalytic activity. ,, In general, the catalytic behavior of nanoparticles is highly dependent on particle size, morphology, and dispersion quality. Many approaches have been conducted on preparing various sizes and new morphologies of CuSe, such as flowers, tubes, and hollow spheres .…”

Section: Introductionmentioning

confidence: 99%

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Dendritic CuSe with Hierarchical Side-Branches: Synthesis, Efficient Adsorption, and Enhanced Photocatalytic Activities under Daylight

Liu

Chen

et al. 2017

ACS Sustainable Chem. Eng.

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Dendritic copper selenides (CuSe) with hierarchical sidebranches are synthesized on a large scale through a one-pot rapid, facile, and green hydrothermal route in which natural kiwi juice is employed as the reducing and coating reagent. Importantly, the CuSe have high specific surface area and excellent photocatalytic activity toward model dye malachite green (MG). The degradation rate of MG on the dendritic CuSe reaches 97% within 30 min under natural daylight irradiation. The high degradation capabilities are mainly attributed to a synergetic effect of the hierarchical side-branched structure with the strong adsorption of MG and the natural daylight-driven photocatalytic activity producing highly reactive oxygen. Thus, the dendritic CuSe will have a broad application prospect, which can be used for the treatment of the dye-contaminated wastewater.

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“…[15][16][17] Among these compounds, selenides of copper with p-type conductivity and direct band gaps are promising photocatalysts active to visible and near-infrared light (NIR). [18][19][20][21][22] Therefore, the combination of Bi 2 WO 6 and selenides of copper could extend the light absorption to the NIR region and construct a p-n heterojunction with their matched band structures, which can be very conductive to improve the photocatalytic property.…”

Section: Introductionmentioning

confidence: 99%

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

et al. 2018

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To make better use of solar light, a new Bi2WO6/Cu1.8Se photocatalyst active to visible and near‐infrared light has been synthesized by a facile hydrothermal method. The composites were characterized by X‐ray diffractometry (XRD), scanning electron microscopy (SEM), UV‐vis diffuse reflectance spectroscopy (DRS), and photoluminescene (PL). The photocatalytic activities of Bi2WO6/Cu1.8Se are evaluated by degrading Congo red solution and hydrogen generation from water. It was found that the molar percentage of Cu1.8Se had great effects on the morphology and photocatalytic property of the Bi2WO6/Cu1.8Se heterojunctions, and the composite with suitable molar amount of Cu1.8Se exhibits much enhanced photocatalytic activity for Congo red degradation under visible and near‐infrared light irradiation and for hydrogen generation under visible light compared to Bi2WO6. The significant improvement photocatalytic activity of the composite could be attributed to its good light absorption, suitable band gap structure, and effective separation of photogenerated electron‐hole pairs of Bi2WO6/Cu1.8Se heterojunction. This work presents an efficient multifunction photocatalyst owning the activity both for water splitting under visible light and for organic contaminants decomposition under visible‐near‐infrared light.

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Influence of growth and photocatalytic properties of copper selenide (CuSe) nanoparticles using reflux condensation method

Cited by 51 publications

References 28 publications

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

Dendritic CuSe with Hierarchical Side-Branches: Synthesis, Efficient Adsorption, and Enhanced Photocatalytic Activities under Daylight

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign

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Influence of growth and photocatalytic properties of copper selenide (CuSe) nanoparticles using reflux condensation method

Cited by 51 publications

References 28 publications

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot

Dendritic CuSe with Hierarchical Side-Branches: Synthesis, Efficient Adsorption, and Enhanced Photocatalytic Activities under Daylight

Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi2WO6/Cu1.8Se for organic pollutants under Vis‐NIR light reign

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Product

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Generation of hydrogen under visible light irradiation with enhanced photocatalytic activity of Bi₂WO₆/Cu_1.8Se for organic pollutants under Vis‐NIR light reign