E-beam-deposited Zr2NiS4-GO alloy thin film, a tenacious photocatalyst and efficient electrode for electrical devices

Gul, Mahwash Mahar; Ahmad, Khuram Shahzad

doi:10.1007/s10853-022-07131-w

Cited by 36 publications

(15 citation statements)

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“…This hydroxyl radical is responsible for the organic contaminant degradation (Figure 8C). 55 Following is the possible degradation reaction for contaminants by the following ternary metal sulphide:

\begin{matrix} lefttrue \\ ZrS - BaS - CrS + hν ⇨ ZrS / BaS / CrS (e^{-}) \\ + ZrS / BaS / CrS (h^{+}) . \end{matrix}

ZrS / BaS / CrS (h^{+}) + {normalH}_{2} O ⇨ ZrS / BaS / CrS + • OH + {normalH}^{+} .

ZrS / BaS / CrS (h^{+}) + {normalO}_{2} ⇨ ZrS / BaS / CrS + {• O}_{2}^{-} .

• {normalO}_{bold2} + {normalH}^{+} ⇨ {normalH}_{2} {normalO}_{2} .

{normalH}_{2} {normalO}_{2} + • {normalO}_{2} ⇨ O {normalH}^{-} + • OH + {normalO}_{2} .

• {normalO}_{2} + organic contaminant ⇨ {normalH}_{2} O + C {normalO}_{...}

…”

Section: Resultsmentioning

confidence: 99%

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Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

Gul

Ahmad

2022

Intl J of Energy Research

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Summary Ternary metal sulphide Zr2S3‐BaS‐Cr2S3 thin film was fabricated through physical vapour deposition and characterized. A mixed morphology with flakes and rice grains‐like particles was observed in the material. The average crystallite size of the nanocomposite was 21.8 nm as determined through X‐ray diffraction (XRD). Band gap energy of 3.7 eV was observed for the nanocomposite. Thin film was explored for energy storage potential as supercapacitor electrode by electrochemical investigation through cyclic voltammetry and linear sweep voltammetry. An impressive specific capacitance of 455 F g−1 was obtained at the scan rate of 100 mV s−1. Moreover, the photocatalytic property of the thin film was also investigated for environmental remediation of organic contaminants including, methylene blue dye, pesticide zoxamide and phenol. Highest photocatalysis was witnessed for dye (86%) with degradation rate constant of 3.24 × 10−2 min−1. Whereas, the degradation rate dwindled to only 73% after four cycles of photocatalysis.

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\begin{matrix} lefttrue \\ ZrS - BaS - CrS + hν ⇨ ZrS / BaS / CrS (e^{-}) \\ + ZrS / BaS / CrS (h^{+}) . \end{matrix}

ZrS / BaS / CrS (h^{+}) + {normalH}_{2} O ⇨ ZrS / BaS / CrS + • OH + {normalH}^{+} .

ZrS / BaS / CrS (h^{+}) + {normalO}_{2} ⇨ ZrS / BaS / CrS + {• O}_{2}^{-} .

• {normalO}_{bold2} + {normalH}^{+} ⇨ {normalH}_{2} {normalO}_{2} .

{normalH}_{2} {normalO}_{2} + • {normalO}_{2} ⇨ O {normalH}^{-} + • OH + {normalO}_{2} .

• {normalO}_{2} + organic contaminant ⇨ {normalH}_{2} O + C {normalO}_{...}

…”

Section: Resultsmentioning

confidence: 99%

Section: Photocatalytic Environmental Remediationmentioning

confidence: 99%

Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

Gul

Ahmad

2022

Intl J of Energy Research

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“…[14,15] As electrode materials for energy storage devices, metal sulfides have recently received a lot of attention. [16] Semiconductor metal sulfide compounds have attracted more attention because of their diverse optoelectronic and physicochemical properties. Numerous products, including sensors, electronics, photovoltaics, and others, have utilized metal sulfides.…”

Section: Introductionmentioning

confidence: 99%

In:SnO₂/Yb₂S₃:Cu₂S:ZnS: A Rare Earth Metal Sulfide‐Conjugated Transition Metal Sulfide Photoactive Electrode

et al. 2023

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Spin coating from a single source precursor is used to produce a transparent conductive electrode for a photoelectrochemical cell. Yb 2 S 3 :Cu 2 S:ZnS is discovered in the composite using X-ray diffraction analysis with a crystallite size of 44 nm. Energy-dispersive X-ray analysis and X-ray photoelectron spectroscopy reveal that the composite comprises Yb, Cu, Zn, and S with an optical bandgap of 2.49 eV. Electrical investigations in a photoelectrochemical cell are measured using cyclic voltammetry, linear sweep voltammetry, transient chronoamperometry (CA), and electrical impedance spectroscopy (EIS). Every experiment shows that the photocurrent density of the electrode is higher than when it is in the light. At all scan rates, light causes the photoelectrode's specific capacitance to increase. Specific capacitance is found to have a maximum value under illumination of 789 Fg À1 as opposed to 745 Fg À1 in the absence of a light source. The highest photocurrent density achieved by the electrode through CA is 23.5 mA. R s value of 23.4 Ω is subsequently obtained by the EIS investigation. It might be stated that this work introduces a useful photoelectrode that can be used in renewable energy systems such as photovoltaics, supercapacitors, and photoelectrochemical solar cells.

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“…[11] Additional potential pseudo-capacitance options include Transition metal sulfides (TMS) are a distinct class of materials that differ from metal oxides due to their higher electrical conductivity, superior chemical resistance, and enhanced reduction oxidation kinetics. [12] Sulfur has very low electronegativity compared to oxygen, which encourages the creation of different nanostructures amid metal ions as well as extra species. [13] Because rare earths have the potential to retain UV rays whilst obstructing discernible light, their optical transparency is increased.…”

Section: Introductionmentioning

confidence: 99%

“…Supercapacitors can store a lot of energy using nanostructured materials, this is largely attributed to the high electrical conductivity and surface area of supercapacitors [11] . Additional potential pseudo‐capacitance options include Transition metal sulfides (TMS) are a distinct class of materials that differ from metal oxides due to their higher electrical conductivity, superior chemical resistance, and enhanced reduction oxidation kinetics [12] . Sulfur has very low electronegativity compared to oxygen, which encourages the creation of different nanostructures amid metal ions as well as extra species [13] …”

Section: Introductionmentioning

confidence: 99%

Synthesis of In : SnO₂/La₄NiS₇ via Diethyldithiocarbamate‐Assisted Spin Coating: A Promising Route for High‐Performance Transparent Photoelectrochemical Energy Storage and Generation

et al. 2023

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Constructing nanostructures that fully boost the performance of all metals while offering a positive inter‐particle effect among frameworks is an efficient approach for enhancing electrochemical effectiveness. Elongated In : SnO2/La4NiS7 structure is created using diethyl dithiocarbamate complex. Investigations were done on the material‘s surficial, crystallographical and electrochemical characters. The direct optical band gap as determined by UV‐visible analysis was 2.9 eV. X‐ray photoelectron spectroscopy presented La3d and Ni2p core level. Electrical investigations of the transparent photoactive electrode in a photoelectrochemical cell showed an exceptional specific capacity of 906 F ⋅ g−1 at 5 mV ⋅ s−1 under illumination. Transient chronoamperometric response of the photoelectrode presented 35.3 mA photocurrent generation. Greater photocurrents were achieved at all scan rates in the existence of light indicating that the exposure to light positively impacted the electrode's performance. Undoubtedly, this work proposed a beneficial photoelectrode that‘s applicable to systems that generate electricity from renewable sources.

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E-beam-deposited Zr2NiS4-GO alloy thin film, a tenacious photocatalyst and efficient electrode for electrical devices

Cited by 36 publications

References 50 publications

Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

In:SnO₂/Yb₂S₃:Cu₂S:ZnS: A Rare Earth Metal Sulfide‐Conjugated Transition Metal Sulfide Photoactive Electrode

Synthesis of In : SnO₂/La₄NiS₇ via Diethyldithiocarbamate‐Assisted Spin Coating: A Promising Route for High‐Performance Transparent Photoelectrochemical Energy Storage and Generation

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E-beam-deposited Zr2NiS4-GO alloy thin film, a tenacious photocatalyst and efficient electrode for electrical devices

Cited by 36 publications

References 50 publications

Nanocomposite Zr 2 S 3 ‐BaS‐Cr 2 S 3 ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

Nanocomposite Zr 2 S 3 ‐BaS‐Cr 2 S 3 ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

In:SnO2/Yb2S3:Cu2S:ZnS: A Rare Earth Metal Sulfide‐Conjugated Transition Metal Sulfide Photoactive Electrode

Synthesis of In : SnO2/La4NiS7 via Diethyldithiocarbamate‐Assisted Spin Coating: A Promising Route for High‐Performance Transparent Photoelectrochemical Energy Storage and Generation

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Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

Nanocomposite Zr ₂ S ₃ ‐BaS‐Cr ₂ S ₃ ternary‐metal chalcogenide: An impressive supercapacitor electrode and environmental remediant of toxic pollutants

In:SnO₂/Yb₂S₃:Cu₂S:ZnS: A Rare Earth Metal Sulfide‐Conjugated Transition Metal Sulfide Photoactive Electrode

Synthesis of In : SnO₂/La₄NiS₇ via Diethyldithiocarbamate‐Assisted Spin Coating: A Promising Route for High‐Performance Transparent Photoelectrochemical Energy Storage and Generation