Construction of highly efficient CuS/CdS nanostructure for enhanced solar H2 evolution

K. Mallikarjuna; P. Reddy Prasad; Chinna Bathula; Nadavala Siva Kumar; Ahmed S. Al-Fatesh; Hyun Seok Kim; Cheolho Bai; I. Neelakanta Reddy

doi:10.1016/j.inoche.2023.111619

Construction of highly efficient CuS/CdS nanostructure for enhanced solar H₂ evolution

K. Mallikarjuna
, P. Reddy Prasad
, Chinna Bathula
, Nadavala Siva Kumar
, Ahmed S. Al-Fatesh
, Hyun Seok Kim
, Cheolho Bai
, I. Neelakanta Reddy

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The fabrication of efficient photocatalytic system for enhanced production of hydrogen is exceptionally thought-provoking. To address this issue herein we fabricated the CuS/CdS heterostructures by ultrasonication for photocatalytic H₂ production. The structural integrity of the produced heterostructure is confirmed by the aid of analytical tools such as X-ray diffraction studies (XRD), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–vis DRS), scanning electron microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The fabricated CuS/CdS sample exhibited the highest H₂ production rate (824 μmol/g) than CuS (67 μmol/g) and CdS (135 μmol/g) under simulated solar illumination. The hydrogen output is noticeably enhanced due to improved absorption of visible light and competent charge carrier partition. It was confirmed by UV–vis diffuse reflectivity and photoluminescence spectra (PL) as charge carrier parting was effective as absorption of visible light was enhanced. A plausible photocatalytic H₂ reaction mechanism has been elucidated from increased charge carrier division and visible light absorptivity. This work depicts a new approach for greatly resourceful nano architecture for energy-related applications.

Original language	English
Article number	111619
Journal	Inorganic Chemistry Communications
Volume	158
DOIs	https://doi.org/10.1016/j.inoche.2023.111619
State	Published - Dec 2023

Keywords

Charge carrier recombination
CuS/CdS
H production
Visible light

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10.1016/j.inoche.2023.111619

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title = "Construction of highly efficient CuS/CdS nanostructure for enhanced solar H2 evolution",

abstract = "The fabrication of efficient photocatalytic system for enhanced production of hydrogen is exceptionally thought-provoking. To address this issue herein we fabricated the CuS/CdS heterostructures by ultrasonication for photocatalytic H2 production. The structural integrity of the produced heterostructure is confirmed by the aid of analytical tools such as X-ray diffraction studies (XRD), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–vis DRS), scanning electron microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The fabricated CuS/CdS sample exhibited the highest H2 production rate (824 μmol/g) than CuS (67 μmol/g) and CdS (135 μmol/g) under simulated solar illumination. The hydrogen output is noticeably enhanced due to improved absorption of visible light and competent charge carrier partition. It was confirmed by UV–vis diffuse reflectivity and photoluminescence spectra (PL) as charge carrier parting was effective as absorption of visible light was enhanced. A plausible photocatalytic H2 reaction mechanism has been elucidated from increased charge carrier division and visible light absorptivity. This work depicts a new approach for greatly resourceful nano architecture for energy-related applications.",

keywords = "Charge carrier recombination, CuS/CdS, H production, Visible light",

author = "K. Mallikarjuna and \{Reddy Prasad\}, P. and Chinna Bathula and \{Siva Kumar\}, Nadavala and Al-Fatesh, \{Ahmed S.\} and Kim, \{Hyun Seok\} and Cheolho Bai and \{Neelakanta Reddy\}, I.",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = dec,

doi = "10.1016/j.inoche.2023.111619",

language = "English",

volume = "158",

journal = "Inorganic Chemistry Communications",

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TY - JOUR

T1 - Construction of highly efficient CuS/CdS nanostructure for enhanced solar H2 evolution

AU - Mallikarjuna, K.

AU - Reddy Prasad, P.

AU - Bathula, Chinna

AU - Siva Kumar, Nadavala

AU - Al-Fatesh, Ahmed S.

AU - Kim, Hyun Seok

AU - Bai, Cheolho

AU - Neelakanta Reddy, I.

PY - 2023/12

Y1 - 2023/12

N2 - The fabrication of efficient photocatalytic system for enhanced production of hydrogen is exceptionally thought-provoking. To address this issue herein we fabricated the CuS/CdS heterostructures by ultrasonication for photocatalytic H2 production. The structural integrity of the produced heterostructure is confirmed by the aid of analytical tools such as X-ray diffraction studies (XRD), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–vis DRS), scanning electron microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The fabricated CuS/CdS sample exhibited the highest H2 production rate (824 μmol/g) than CuS (67 μmol/g) and CdS (135 μmol/g) under simulated solar illumination. The hydrogen output is noticeably enhanced due to improved absorption of visible light and competent charge carrier partition. It was confirmed by UV–vis diffuse reflectivity and photoluminescence spectra (PL) as charge carrier parting was effective as absorption of visible light was enhanced. A plausible photocatalytic H2 reaction mechanism has been elucidated from increased charge carrier division and visible light absorptivity. This work depicts a new approach for greatly resourceful nano architecture for energy-related applications.

AB - The fabrication of efficient photocatalytic system for enhanced production of hydrogen is exceptionally thought-provoking. To address this issue herein we fabricated the CuS/CdS heterostructures by ultrasonication for photocatalytic H2 production. The structural integrity of the produced heterostructure is confirmed by the aid of analytical tools such as X-ray diffraction studies (XRD), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–vis DRS), scanning electron microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). The fabricated CuS/CdS sample exhibited the highest H2 production rate (824 μmol/g) than CuS (67 μmol/g) and CdS (135 μmol/g) under simulated solar illumination. The hydrogen output is noticeably enhanced due to improved absorption of visible light and competent charge carrier partition. It was confirmed by UV–vis diffuse reflectivity and photoluminescence spectra (PL) as charge carrier parting was effective as absorption of visible light was enhanced. A plausible photocatalytic H2 reaction mechanism has been elucidated from increased charge carrier division and visible light absorptivity. This work depicts a new approach for greatly resourceful nano architecture for energy-related applications.

KW - Charge carrier recombination

KW - CuS/CdS

KW - H production

KW - Visible light

UR - https://www.scopus.com/pages/publications/85175521417

U2 - 10.1016/j.inoche.2023.111619

DO - 10.1016/j.inoche.2023.111619

M3 - Article

AN - SCOPUS:85175521417

SN - 1387-7003

VL - 158

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

M1 - 111619

ER -

Construction of highly efficient CuS/CdS nanostructure for enhanced solar H₂ evolution

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Keywords

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