Effect of alkali ions (Na+, K+, Cs+) on reaction mechanism of CZTS nano-particles synthesis

Kumar, Suresh; Altosaar, M.; Mikli, Valdek

doi:10.1016/j.spmi.2018.02.019

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…These results show that BP crystals are grown at temperatures ranging from 400 to 800 °C, while the growth yield of BP is a maximum when the temperature is between 600 °C and 750 °C. This result is understandable because a low temperature would decrease the growth rate of BP, while a high temperature would make its nucleation difficult [34,35] . After growth, the purity of the BP was characterized by energy dispersive X-ray spectroscopy (EDX) analysis ( Figure S6, Supporting Information).…”

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confidence: 98%

High yield growth and doping of black phosphorus with tunable electronic properties

et al. 2020

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Black phosphorus (BP) has recently attracted significant interest due to its unique electronic and optical properties. Doping is an effective strategy to tune a material's electronic structures, however, the direct and controllable growth of BP with a high yield and its doping remain a great challenge. Here we report an efficient short-distance transport (SDT) growth approach and achieve the controlled growth of high quality BP with the highest yield so far, where 98% of the red phosphorus is converted to BP. The doping of BP by As, Sb, Bi, Se and Te are also achieved by this SDT growth approach. Spectroscopic results show that doping systematically changes its electronic structures including band gap, work function, and energy band position. As a result, we have found that the air-stability of doped BP samples (Sb and Te-doped BP) improves compared with pristine BP, due to the downshift of the conduction band minimum with doping. This work develops a new method to grow BP and doped BP with tunable electronic structures and improved stability, and should extend the uses of these class of materials in various areas.

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confidence: 98%

High yield growth and doping of black phosphorus with tunable electronic properties

et al. 2020

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“…Additionally, Cu, Zn, Sn, and S are common in the crust and are essentially non-toxic, making the constituent elements of Cu2ZnSnS4 numerous in sources and environmentally friendly [16,17]. Cu2ZnSnS4 can be prepared in a variety of ways, and it has received more comprehensive research due to its chemical stability [18,19]. Because of its superior performance, CZTS has been extensively researched and applied to solar cells [20][21][22][23].…”

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confidence: 99%

Hydrothermally Synthesized Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanoparticles for Photocatalytic Degradation of Rhodamine B Dye

Saravanan

Sarathkumar

Sivakumar

2023

JNanoR

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Industrial dyes contained a wide range of organic compounds that could affect the environment and high dimensional challenges to humans. In recent years, the environmentally safe and inexpensive quaternary copper-based chalcogenide Cu2ZnSnS4 (CZTS) has emerged as a material for photovoltaics and photocatalysis. CZTS nanoparticles were prepared in this investigation using the hydrothermal route at 210 °C for 24 h without the addition of a surfactant or capping agents. Rhodamine B (RhB), a carcinogenic dye, was degraded using the synthesized material through a photocatalytic process. The structural, morphological, optical, and photocatalytic characteristics of CZTS nanoparticles were examined using X-ray diffraction (XRD), Raman spectroscopy, Field emission scanning electron microscopy (FE-SEM), and UV-vis spectroscopy. The average particle size of CZTS is found to be 31 nm with crystalline nature have been characterized by XRD. The results demonstrate that the synthesized sample has mixed morphological structures such as clew-like and flower-like structures and a bandgap of 1.50 eV. CZTS nanoparticles were used as photocatalysts under direct sunlight for Rhodamine B degradation, with the fastest degradation efficiency of 72% at 50 minutes. The results show that surfactant-free hydrothermally synthesized CZTS nanoparticles are a very promising material for the degradation of RhB dye due to the rapid degradation rate and high degradation efficiency.

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Enhanced Overall Water-Splitting Performance: Oleylamine-Functionalized GO/Cu₂ZnSnS₄Composite as a Nobel Metal-Free and NonPrecious Electrocatalyst

et al. 2019

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Using emergent highly proficient and inexpensive non-noble metal-based bifunctional electrocatalysts to overall water splitting reaction is a pleasingly optional approach to resolve greenhouse gases and energy anxiety. In this work, oleylamine-functionalized graphene oxide/Cu2ZnSnS4 composite (OAm-GO/CZTS) is prepared and investigated as a higher bifunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The OAm-GO/CZTS shows brilliant electrocatalytic performance and durability toward H2 and O2 in both acidic and basic media, with overpotentials of 47 mV for HER and 1.36 V for OER at a current density of 10 mA cm–2 and Tafel slopes of 64 and 91 mV dec–1, respectively, which are extremely higher to those of transition metal chalcogenide and as good as of commercial precious-metal catalysts.

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Effect of alkali ions (Na+, K+, Cs+) on reaction mechanism of CZTS nano-particles synthesis

Cited by 4 publications

References 13 publications

High yield growth and doping of black phosphorus with tunable electronic properties

High yield growth and doping of black phosphorus with tunable electronic properties

Hydrothermally Synthesized Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanoparticles for Photocatalytic Degradation of Rhodamine B Dye

Enhanced Overall Water-Splitting Performance: Oleylamine-Functionalized GO/Cu₂ZnSnS₄Composite as a Nobel Metal-Free and NonPrecious Electrocatalyst

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Effect of alkali ions (Na+, K+, Cs+) on reaction mechanism of CZTS nano-particles synthesis

Cited by 4 publications

References 13 publications

High yield growth and doping of black phosphorus with tunable electronic properties

High yield growth and doping of black phosphorus with tunable electronic properties

Hydrothermally Synthesized Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanoparticles for Photocatalytic Degradation of Rhodamine B Dye

Enhanced Overall Water-Splitting Performance: Oleylamine-Functionalized GO/Cu2ZnSnS4Composite as a Nobel Metal-Free and NonPrecious Electrocatalyst

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Enhanced Overall Water-Splitting Performance: Oleylamine-Functionalized GO/Cu₂ZnSnS₄Composite as a Nobel Metal-Free and NonPrecious Electrocatalyst