Self‐templated fabrication of 2-D dual nanoarchitecture Zn1-xCdxS porous nanosheet and ZnO nanorod for photoelectrochemical hydrogen production

Patil, Ruturaj P.; Mahadik, Mahadeo A.; Chae, Weon‐Sik; Choi, Sun Hee; Jang, Jum Suk

doi:10.1016/j.apsusc.2020.148267

Cited by 14 publications

(22 citation statements)

References 57 publications

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“…A new rodlike architecture seems to form at the same time that ZnCdSe is generated on Zn foil. The self-templated structure is ZnO NR, which is formed by free Zn 2+ ions released in the cation exchange and/or reactive surface Zn atoms of the Zn foil substrate, as explained in our previous work …”

Section: Resultsmentioning

confidence: 96%

“…In the UV–vis spectra, the synthesized ZnSe(en) 0.5 NBs exhibit absorption edges at 300–350 nm. The band gap energy is calculated using the Tauc equation as ∼3.7 eV for all samples . To further confirm the microstructure of the optimized ZnSe(en) 0.5 NB 180C photoelectrode, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) were also performed in Figure f–g.…”

Section: Resultsmentioning

confidence: 99%

“…To the best of our knowledge, the fabrication of dual nanostructure on Zn foil via topotactic transformation of ZnSe(en) 0.5 to ZnCdSe/ZnO using Cd 2+ ion-exchange strategy has not been addressed yet. The development of the nanostructure based on Zn foil has received great attention due to its low manufacturing cost, nontoxicity and chemical stability in aqueous electrolyte, and low resistivity for facilitating electron transfer and collection. , Zn foil shows the standard reduction potential of Zn (−0.76 V vs standard hydrogen electrode (SHE)) toward the hydrogen evolution reaction, , as well as the zinc foil-based material acts as a precursor for developing nanostructures on conductive substrates …”

Section: Introductionmentioning

confidence: 96%

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Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

Patil

Mahadik

Chae

et al. 2021

ACS Appl. Mater. Interfaces

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Herein, we propose the topotactic and self-templated fabrication of Zn1–x Cd x Se porous nanobelt–ZnO nanorod (termed as ZnCdSe/ZnO) photoelectrode via the cadmium (Cd2+) ion-exchange process on zinc (Zn) foil. Inorganic–organic hybrid ZnSe(en)0.5 nanobelt (NB) was synthesized on Zn foil by a facial solvothermal method at different temperatures of 140, 160, and 180 °C for 12 h. The interfacial properties and photoelectrochemical (PEC) performance of inorganic–organic ZnSe(en)0.5 NB fabricated through the Cd2+ ion-exchange method at different time durations of 6, 12, 18, and 24 h at 140 °C were investigated. The TEM analysis results indicate that the inorganic–organic ZnSe(en)0.5 NB transformed into ZnCdSe and a self-assembled ZnO formed on the Zn foil. In particular Cd2+ ion temperature (140 °C/18 h), the optimized ZnCdSe/ZnO-(F) photoelectrode shows an excellent photocurrent density of 14 mA·cm–2 at 0 V vs Ag/AgCl with 219 μmol·cm–2 hydrogen gas evolution for 3 h under 1 sun illumination. The higher photocurrent value resulted from the optimum growth of ZnO, the formation of porous ZnCdSe, and the effective electrolyte penetration for electron–hole pair separation. The photoluminescence spectroscopy shows that the photoexcited charged carriers promoted a longer lifetime. Furthermore, we provide a full account of the possible charge-transfer mechanism during PEC hydrogen production.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

Patil

Mahadik

Chae

et al. 2021

ACS Appl. Mater. Interfaces

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“…In the past few decades, scholars have devoted themselves to finding semiconductor catalytic materials with high catalytic performance, semiconductor materials have been extensively explored, such as TiO 2 5 – 7 , CdS 8 – 10 , ZnO 11 – 13 and g-C 3 N 4 14 – 16 . Among the various semiconductor catalysts that have been currently developed and researched, g-C 3 N 4 , as a non-metal semiconductor material, has attracted wide attention because of its suitable band gap, good stability, and visible light response.…”

Section: Introductionmentioning

confidence: 99%

MoS2 and Fe2O3 co-modify g-C3N4 to improve the performance of photocatalytic hydrogen production

Zhang

Wan

Zhang

et al. 2022

Sci Rep

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Photocatalytic hydrogen production as a technology to solve energy and environmental problems exhibits great prospect and the exploration of new photocatalytic materials is crucial. In this research, the ternary composite catalyst of MoS2/Fe2O3/g-C3N4 was successfully prepared by a hydrothermal method, and then a series of characterizations were conducted. The characterization results demonstrated that the composite catalyst had better photocatalytic performance and experiment results had confirmed that the MoS2/Fe2O3/g-C3N4 composite catalyst had a higher hydrogen production rate than the single-component catalyst g-C3N4, which was 7.82 mmol g−1 h−1, about 5 times higher than the catalyst g-C3N4 (1.56 mmol g−1 h−1). The improvement of its photocatalytic activity can be mainly attributed to its enhanced absorption of visible light and the increase of the specific surface area, which provided more reactive sites for the composite catalyst. The successful preparation of composite catalyst provided more channels for carrier migration and reduced the recombination of photogenerated electrons and holes. Meanwhile, the composite catalyst also showed higher stability and repeatability.

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“…In the last years, inorganic semiconductor materials such as ZnS, ZnO, CdS, SnS 2 , CuS or CdSe [1][2][3][4][5][6] have been broadly considered due to their uses in the people's daily life. Furthermore, the nanostructures of the semiconductor materials revel an interesting linear absorption, photoluminescence emission and nonlinear characteristics as compared with bulk form [1][2][3][4][5][6]. Cadmium sul de (CdS) is a familiar semiconductor photocatalytic material that possesses a wide bandgap ≈ 2.4 eV [3], and it exhibited a rapid generation of photo-induced electron-hole pairs [7].…”

Section: Introductionmentioning

confidence: 99%

Structural, optical, and electronic characteristics of non-stoichiometric nanocadmium sulfide

Mohamed

Farag

Badawi

2021

J Mater Sci: Mater Electron

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Samples of non-stoichiometric nano CdS 1 − x were synthesized by a simple thermolysis method by lowering the ratio of thiourea relative to cadmium acetate as starting precursors; Cd(Ac):(1-x) thiourea (x = 0.0, 0.03, 0.05 and 0.1). X'pert HighScore Plus program manifested biphasic CdS (cubic and hexagonal) and the Rietveld analysis was utilized to match the structural and microstructure parameters of the formed samples. The possibility of formed CdS 1 − x O x alloy due to the sulfur de ciency is also examined using the Rietveld method. A High-resolution transmission electron microscope imaging exhibited nano size particles with homogeneous morphology. Fourier transform infrared spectrometer was utilized to con rm the existence of O 2 in CdS 1 − x matrix. The bandgap energies for CdS 1 − x are reduced below the values of energy gaps of CdS and CdO upon increasing the parameter (x) forming a band gap "bowing".The photoluminescence (PL) emitted visible colors depending on the amount of sulfur de ciency and excitation wavelength used. The maximum PL intensity observed in CdS 0.9 sample, con rmed the presents of oxygen inside the matrix. The in uence of oxygen substitution or vacancies of sulfur on the electronic structure and optical features of CdS was also investigated applying density function calculations.

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Self‐templated fabrication of 2-D dual nanoarchitecture Zn1-xCdxS porous nanosheet and ZnO nanorod for photoelectrochemical hydrogen production

Cited by 14 publications

References 57 publications

Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

MoS2 and Fe2O3 co-modify g-C3N4 to improve the performance of photocatalytic hydrogen production

Structural, optical, and electronic characteristics of non-stoichiometric nanocadmium sulfide

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Self‐templated fabrication of 2-D dual nanoarchitecture Zn1-xCdxS porous nanosheet and ZnO nanorod for photoelectrochemical hydrogen production

Cited by 14 publications

References 57 publications

Topotactic and Self-Templated Fabrication of Zn1–xCdxSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

Topotactic and Self-Templated Fabrication of Zn1–xCdxSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

MoS2 and Fe2O3 co-modify g-C3N4 to improve the performance of photocatalytic hydrogen production

Structural, optical, and electronic characteristics of non-stoichiometric nanocadmium sulfide

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Product

Resources

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Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production

Topotactic and Self-Templated Fabrication of Zn_1–xCd_xSe Porous Nanobelt–ZnO Nanorod for Photoelectrochemical Hydrogen Production