Synergy between nitrogen, phosphorus co-doped carbon quantum dots and ZnO nanorods for enhanced hydrogen production

H. J. Yashwanth; Sachin R. Rondiya; Henry I. Eya; Nelson Z. Dzade; Deodatta M. Phase; Sanjay D. Dhole; K. Hareesh

doi:10.1016/j.jallcom.2022.168397

Synergy between nitrogen, phosphorus co-doped carbon quantum dots and ZnO nanorods for enhanced hydrogen production

H. J. Yashwanth
, Sachin R. Rondiya^*
, Henry I. Eya
, Nelson Z. Dzade
, Deodatta M. Phase
, Sanjay D. Dhole
, K. Hareesh

^*Corresponding author for this work

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

30 Citations (Scopus)

Abstract

We report a facile synthesis of nitrogen and phosphorus co-doped carbon quantum dots (NPCQDs) anchored on ZnO nanorods to form NPCQDs/ZnO (NPCZ) nanohybrid as efficient and robust photocatalysts for light-driven hydrogen production. The synthesized NPCZ catalyst exhibited improvement in hydrogen production of 417 μmolh⁻¹g⁻¹ under visible light compared to nitrogen doped CQDs/ZnO (NCZ), phosphorus doped CQDs/ZnO (PCZ) and CQDs/ZnO (CZ) nanohybrid photocatalysts. The synergistic interactions between NPCQDs and ZnO nanorods give rise to the formation of additional energy levels, decrease in recombination rate and increase in decay lifetime of photo-generated electron hole pairs, reduced work function, thus the eventual improved hydrogen generation performance in visible region. Further, the experimentally obtained results are consistently corroborated by the first principles Density Functional Theory (DFT), revealing the decrease in bandgap as well as work function and improvement in density of states (DOS) of NPCZ photocatalyst.

Original language	English
Article number	168397
Journal	Journal of Alloys and Compounds
Volume	937
DOIs	https://doi.org/10.1016/j.jallcom.2022.168397
Publication status	Published - 15-03-2023

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2022.168397

Cite this

@article{d8ab948d30f44a519a4450760d28ff57,

title = "Synergy between nitrogen, phosphorus co-doped carbon quantum dots and ZnO nanorods for enhanced hydrogen production",

abstract = "We report a facile synthesis of nitrogen and phosphorus co-doped carbon quantum dots (NPCQDs) anchored on ZnO nanorods to form NPCQDs/ZnO (NPCZ) nanohybrid as efficient and robust photocatalysts for light-driven hydrogen production. The synthesized NPCZ catalyst exhibited improvement in hydrogen production of 417 μmolh−1g−1 under visible light compared to nitrogen doped CQDs/ZnO (NCZ), phosphorus doped CQDs/ZnO (PCZ) and CQDs/ZnO (CZ) nanohybrid photocatalysts. The synergistic interactions between NPCQDs and ZnO nanorods give rise to the formation of additional energy levels, decrease in recombination rate and increase in decay lifetime of photo-generated electron hole pairs, reduced work function, thus the eventual improved hydrogen generation performance in visible region. Further, the experimentally obtained results are consistently corroborated by the first principles Density Functional Theory (DFT), revealing the decrease in bandgap as well as work function and improvement in density of states (DOS) of NPCZ photocatalyst.",

author = "Yashwanth, \{H. J.\} and Rondiya, \{Sachin R.\} and Eya, \{Henry I.\} and Dzade, \{Nelson Z.\} and Phase, \{Deodatta M.\} and Dhole, \{Sanjay D.\} and K. Hareesh",

note = "Funding Information: The authors acknowledge Science and Engineering Research Board, Govt. of India for funding (No. ECR/2017/002788). SRR acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India. NYD acknowledge the UK Engineering and Physical Sciences Research Council (EPSRC) for funding (Grant No. EP/S001395/1). This work has used the computational facilities of the Advanced Research Computing at Cardiff (ARCCA) Division, Cardiff University, and HPC Wales. NYD also acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of the Pennsylvania State University. Funding Information: The authors acknowledge Science and Engineering Research Board , Govt. of India for funding (No. ECR/2017/002788 ). SRR acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc) , Bangalore, India. NYD acknowledge the UK Engineering and Physical Sciences Research Council ( EPSRC ) for funding (Grant No. EP/S001395/1 ). This work has used the computational facilities of the Advanced Research Computing at Cardiff (ARCCA) Division, Cardiff University, and HPC Wales. NYD also acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of the Pennsylvania State University. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = mar,

day = "15",

doi = "10.1016/j.jallcom.2022.168397",

language = "English",

volume = "937",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Synergy between nitrogen, phosphorus co-doped carbon quantum dots and ZnO nanorods for enhanced hydrogen production

AU - Yashwanth, H. J.

AU - Rondiya, Sachin R.

AU - Eya, Henry I.

AU - Dzade, Nelson Z.

AU - Phase, Deodatta M.

AU - Dhole, Sanjay D.

AU - Hareesh, K.

N1 - Funding Information: The authors acknowledge Science and Engineering Research Board, Govt. of India for funding (No. ECR/2017/002788). SRR acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India. NYD acknowledge the UK Engineering and Physical Sciences Research Council (EPSRC) for funding (Grant No. EP/S001395/1). This work has used the computational facilities of the Advanced Research Computing at Cardiff (ARCCA) Division, Cardiff University, and HPC Wales. NYD also acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of the Pennsylvania State University. Funding Information: The authors acknowledge Science and Engineering Research Board , Govt. of India for funding (No. ECR/2017/002788 ). SRR acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc) , Bangalore, India. NYD acknowledge the UK Engineering and Physical Sciences Research Council ( EPSRC ) for funding (Grant No. EP/S001395/1 ). This work has used the computational facilities of the Advanced Research Computing at Cardiff (ARCCA) Division, Cardiff University, and HPC Wales. NYD also acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of the Pennsylvania State University. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2023/3/15

Y1 - 2023/3/15

N2 - We report a facile synthesis of nitrogen and phosphorus co-doped carbon quantum dots (NPCQDs) anchored on ZnO nanorods to form NPCQDs/ZnO (NPCZ) nanohybrid as efficient and robust photocatalysts for light-driven hydrogen production. The synthesized NPCZ catalyst exhibited improvement in hydrogen production of 417 μmolh−1g−1 under visible light compared to nitrogen doped CQDs/ZnO (NCZ), phosphorus doped CQDs/ZnO (PCZ) and CQDs/ZnO (CZ) nanohybrid photocatalysts. The synergistic interactions between NPCQDs and ZnO nanorods give rise to the formation of additional energy levels, decrease in recombination rate and increase in decay lifetime of photo-generated electron hole pairs, reduced work function, thus the eventual improved hydrogen generation performance in visible region. Further, the experimentally obtained results are consistently corroborated by the first principles Density Functional Theory (DFT), revealing the decrease in bandgap as well as work function and improvement in density of states (DOS) of NPCZ photocatalyst.

AB - We report a facile synthesis of nitrogen and phosphorus co-doped carbon quantum dots (NPCQDs) anchored on ZnO nanorods to form NPCQDs/ZnO (NPCZ) nanohybrid as efficient and robust photocatalysts for light-driven hydrogen production. The synthesized NPCZ catalyst exhibited improvement in hydrogen production of 417 μmolh−1g−1 under visible light compared to nitrogen doped CQDs/ZnO (NCZ), phosphorus doped CQDs/ZnO (PCZ) and CQDs/ZnO (CZ) nanohybrid photocatalysts. The synergistic interactions between NPCQDs and ZnO nanorods give rise to the formation of additional energy levels, decrease in recombination rate and increase in decay lifetime of photo-generated electron hole pairs, reduced work function, thus the eventual improved hydrogen generation performance in visible region. Further, the experimentally obtained results are consistently corroborated by the first principles Density Functional Theory (DFT), revealing the decrease in bandgap as well as work function and improvement in density of states (DOS) of NPCZ photocatalyst.

UR - https://www.scopus.com/pages/publications/85143687718

UR - https://www.scopus.com/pages/publications/85143687718#tab=citedBy

U2 - 10.1016/j.jallcom.2022.168397

DO - 10.1016/j.jallcom.2022.168397

M3 - Article

AN - SCOPUS:85143687718

SN - 0925-8388

VL - 937

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 168397

ER -

Synergy between nitrogen, phosphorus co-doped carbon quantum dots and ZnO nanorods for enhanced hydrogen production

Abstract

UN SDGs

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this