Hot injection-induced synthesis of ZnCdS–rGO/MoS<sub>2</sub> heterostructures for efficient hydrogen production and CO<sub>2</sub> photoreduction

Gautam, Amit Kumar; Sk, Saddam; Tiwari, Amritanjali; Abraham, B. M.; Perupogu, Vijayanand; Pal, Ujjwal

doi:10.1039/d1cc02292j

Cited by 35 publications

(22 citation statements)

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“…Type-II Zn 0.5 Cd 0.5 S/NiSe 2 nanoparticles and hybrid ZnCdS-rGO/MoS 2 nanosheets achieved excellent PHE values exceeding 100 mmol g À1 h À1 . [58,63] Therefore, heterojunction construction is an efficient approach for improving the photoactivity of Zn x Cd 1Àx S photocatalysts, which is also a further research direction to develop a commercial Zn x Cd 1Àx Sbased photocatalyst for HER.…”

Section: Heterojunction Engineeringmentioning

confidence: 99%

“…The representative type‐II heterojunction photocatalysts are Zn x Cd 1− x S/CdS, [ 56 ] Zn x Cd 1− x S/Co 3 O 4 , [ 57 ] and Zn 0.5 Cd 0.5 S/NiSe 2 , [ 58 ] and Z‐scheme heterojunction photocatalysts include Zn x Cd 1− x S/Co 9 S 8 , [ 59 ] Zn 0.3 Cd 0.7 S/Fe 2 O 3 , [ 60 ] and Zn 0.4 Cd 0.6 S/α‐Fe 2 O 3 . [ 61 ] Excluding the type‐II and Z‐scheme catalysts, Zn x Cd 1‐ x S‐based heterojunctions with other types have also been developed, including 2D/0D Zn 0.5 Cd 0.5 S/Ni(OH) 2 , [ 62 ] hybrid ZnCdS–rGO/MoS 2 , [ 63 ] and type‐I CdS@ZnCdS/WS 2 . [ 64 ] The corresponding heterojunction structure and PHE mechanism are shown in Figure .…”

Section: Heterojunction Engineeringmentioning

confidence: 99%

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Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

et al. 2022

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Efficient solar-to-hydrogen (STH) conversion through water splitting relies on the development of low-cost photocatalysts with high photoactivity and stability. Zn x Cd 1Àx S, an emerging metal sulfide (MS) solid solution for STH, possesses several unique advantages, such as a tunable bandgap, abundant elemental constituents, and high stability. Although Zn x Cd 1Àx S-based photocatalysts are investigated for hydrogen evolution, their photoactivity still has to be enhanced for commercial applications. Herein, the design concept, crystal and band structure properties, and original photoactivity of Zn x Cd 1Àx S are briefly introduced, and Zn x Cd 1Àx S solutions with different morphologies and structures, modifications, synthesis methods, and vacancy engineering are then discussed. Subsequently, the combination of Zn x Cd 1Àx S and cocatalysts and several representative Zn x Cd 1Àx S-based heterojunction photocatalysts for hydrogen evolution are reviewed and discussed in detail. Finally, the unsolved issues in the application of Zn x Cd 1Àx S photocatalysts and their potential solutions for developing advanced Zn x Cd 1Àx S-based photocatalysts are discussed.

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Section: Heterojunction Engineeringmentioning

confidence: 99%

Section: Heterojunction Engineeringmentioning

confidence: 99%

Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

et al. 2022

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“…Graphene oxide (GO) possesses unique physicochemical properties with two-dimensional lamellar structure. 13,14 The sp 2 hybridized carbon atoms in GO have conducting π-states, which are separated by the sp 3 C atoms with σ-states by large energy gaps. 15 The sp 2 and sp 3 hybridized C atoms provide liberty to modify the GO properties.…”

Section: Introductionmentioning

confidence: 99%

“…13,14 The sp 2 hybridized carbon atoms in GO have conducting π-states, which are separated by the sp 3 C atoms with σ-states by large energy gaps. 15 The sp 2 and sp 3 hybridized C atoms provide liberty to modify the GO properties. The carbon and oxygen stoichiometric ratio of functional groups on GO surface displayed it as a semiconductor with bandgap tunability ability.…”

Section: Introductionmentioning

confidence: 99%

“…These particles display size‐dependent properties. Various modes of synthesis have been used widely for their preparation such as hydrothermal, hot‐injection, single‐source precursors, and so on 3‐5 . The single‐source precursor technique is important for the production of high‐quality nanocrystals with a metal chalcogenide available bond in them.…”

Section: Introductionmentioning

confidence: 99%

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Electron beam deposited (Cu₂S‐CdS)GOthin film as active electrode for supercapacitor and enhanced photocatalyst for water remediation

Gul

Ahmad

2022

Intl J of Energy Research

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Summary Metal sulfides conjugated graphene oxide (GO) have captivated researchers owing to the elaborated opto‐electrochemical and photocatalytic properties. Current research reports the synthesis of Copper sulfide (CuS) and cadmium sulfide (CdS) bimetal sulfide GO composite by single‐source precursor using diethyl dithiocarbamate ligand. The synthesized alloy was deposited through electron beam deposition system. Characterization of the thin films was done by various techniques including, XRD, UV‐visible spectrophotometry, fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM)‐energy dispersive X‐ray analysis (EDX). Electrochemical properties were investigated through cyclic voltammetry and linear sweep voltammetry using 3‐M KOH. Degradation of toxicants such as methyl red dye, pesticide isopyrazam, and phenol was done by the thin film to evaluate its photocatalytic characteristic. (CuS‐CdS)GO thin film showed separate bandgaps for CuS and CdS as 2.04 and 3.3 eV. A hexagonal crystal system for (Cu2S‐CdS)GO was observed through XRD with an average crystal size of 50 nm. A cubic shape with globular edges was detected by SEM investigation. An impressive specific capacitance value of 35 F g−1 at 100 mV s−1 proved it as a promising electrode for supercapacitors. A remarkable photocatalytic degradation rate was obtained by the thin film for all the toxicants with the highest rate for pesticide, that is, 81% under just 60 minutes, which remained >70% even after four successive cycles. The profound electrochemical and photocatalytic properties of (Cu2S‐CdS)GO thin film make it an auspicious material for optical, electrical, and photo‐devices.

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Emerging Photoreforming Process to Hydrogen Production: A Future Energy

Shelake,

Sutar,

Abraham

et al. 2024

Adv Funct Materials

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In the quest of renewable energy technologies, solar photoreforming emerges as one of the affordable yet challenging process for converting biomass into hydrogen, hydrocarbon fuels, and chemicals. This review highlights the state‐of‐the‐art photoreforming, elucidating its underlying mechanisms for the conversion of dissipated polymers into H2 and valuable chemicals. Biomass feedstocks such as carbohydrates, agricultural residues, glycopolymers, food wastes, and waste plastics are evaluated based on their chemical composition, energy content, and sustainability aspects, exploring the selection of appropriate bio‐renewable resources, considering their abundance, availability, and potential for hydrogen production. The impact of diverse process parameters on photoreforming efficiency is explored, encompassing factors like reaction temperature, pH, catalyst loading, reactor design, solvent effect, and light intensity across various sacrificial substrates. The discussion also considers their correlation with hydrogen production rate, selectivity, and energy efficiency. This review buckles on the design and synthesis of functional photocatalysts for biomass‐derived feedstock, highlighting their photocatalytic (PC) properties in biomass reforming processes and related feedstock into valuable chemicals and biofuel. The review also delves into potential pathways for future advancements including artificial intelligence (AI) and machine learning (ML), alongside addressing the challenges and insightful perspectives within this evolving field of future green energy.

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Hot injection-induced synthesis of ZnCdS–rGO/MoS₂ heterostructures for efficient hydrogen production and CO₂ photoreduction

Abstract: A highly efficient hybrid ZnCdS-rGO/MoS2 heterostructure is successfully synthesized through a hot injection approach and control loading of rGO/MoS2. The synergism provides an unprecedently high H2-generation rate 193.4 mmol H2...

Cited by 35 publications

References 34 publications

Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

Electron beam deposited (Cu₂S‐CdS)GOthin film as active electrode for supercapacitor and enhanced photocatalyst for water remediation

Emerging Photoreforming Process to Hydrogen Production: A Future Energy

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Hot injection-induced synthesis of ZnCdS–rGO/MoS2 heterostructures for efficient hydrogen production and CO2 photoreduction

Abstract: A highly efficient hybrid ZnCdS-rGO/MoS2 heterostructure is successfully synthesized through a hot injection approach and control loading of rGO/MoS2. The synergism provides an unprecedently high H2-generation rate 193.4 mmol H2...

Cited by 35 publications

References 34 publications

Recent Advances in the Hydrogen Evolution Reaction of ZnxCd1−xS‐Based Photocatalysts

Recent Advances in the Hydrogen Evolution Reaction of ZnxCd1−xS‐Based Photocatalysts

Electron beam deposited (Cu2S‐CdS)GOthin film as active electrode for supercapacitor and enhanced photocatalyst for water remediation

Emerging Photoreforming Process to Hydrogen Production: A Future Energy

Contact Info

Product

Resources

About

Hot injection-induced synthesis of ZnCdS–rGO/MoS₂ heterostructures for efficient hydrogen production and CO₂ photoreduction

Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

Recent Advances in the Hydrogen Evolution Reaction of Zn_xCd_1−xS‐Based Photocatalysts

Electron beam deposited (Cu₂S‐CdS)GOthin film as active electrode for supercapacitor and enhanced photocatalyst for water remediation