1
|
Wang CY, Chang HE, Wang CY, Kurioka T, Chen CY, Mark Chang TF, Sone M, Hsu YJ. Manipulation of interfacial charge dynamics for metal-organic frameworks toward advanced photocatalytic applications. NANOSCALE ADVANCES 2024; 6:1039-1058. [PMID: 38356624 PMCID: PMC10866133 DOI: 10.1039/d3na00837a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/15/2023] [Indexed: 02/16/2024]
Abstract
Compared to other known materials, metal-organic frameworks (MOFs) have the highest surface area and the lowest densities; as a result, MOFs are advantageous in numerous technological applications, especially in the area of photocatalysis. Photocatalysis shows tantalizing potential to fulfill global energy demands, reduce greenhouse effects, and resolve environmental contamination problems. To exploit highly active photocatalysts, it is important to determine the fate of photoexcited charge carriers and identify the most decisive charge transfer pathway. Methods to modulate charge dynamics and manipulate carrier behaviors may pave a new avenue for the intelligent design of MOF-based photocatalysts for widespread applications. By summarizing the recent developments in the modulation of interfacial charge dynamics for MOF-based photocatalysts, this minireview can deliver inspiring insights to help researchers harness the merits of MOFs and create versatile photocatalytic systems.
Collapse
Affiliation(s)
- Chien-Yi Wang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Huai-En Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Cheng-Yu Wang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Tomoyuki Kurioka
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Chun-Yi Chen
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Tso-Fu Mark Chang
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Masato Sone
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Yung-Jung Hsu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
- International Research Frontiers Initiative, Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| |
Collapse
|
2
|
Zhang W, Liu X, Jin W, Li Q, Sun Q, Liu E, Xie H, Miao H, Hu X. Epitaxial grown [hk1] oriented 2D/1D Bi 2O 2S/Sb 2S 3 heterostructure with significantly enhanced photoelectrochemical performance. J Colloid Interface Sci 2024; 654:413-425. [PMID: 37857094 DOI: 10.1016/j.jcis.2023.10.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/18/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023]
Abstract
Bismuth oxysulfide (Bi2O2S) is a layered material with high carrier mobility, excellent light absorption characteristic and good stability. However, there are few reports about the use of Bi2O2S in photoelectrochemical (PEC) water splitting. In this paper, Bi2O2S nanosheets (NSs) films were prepared on FTO substrates by one-step hydrothermal method, which broke the traditional powder state of Bi2O2S prepared. Based on the high lattice matching between antimony sulfide (Sb2S3) and bismuth sulfide (Bi2S3) obtained from the topological transformation of partial Bi2O2S, Sb2S3 nanorods (NRs) with [hk1] predominant orientation were epitaxially grown on the surface of Bi2O2S to establish a transport channel for rapid carrier migration. Titanium dioxide (TiO2) electron transport layer with oxygen vacancies was introduced into the back to capture and release electrons, further reducing the recombination rate. The photocurrent density of TiO2/Bi2O2S/Sb2S3-annealed photoelectrode at 1.23 V vs. RHE was 4.37 mA/cm2, which was 13.7 times that of monomer Bi2O2S. In addition, the TiO2/Bi2O2S/Sb2S3-annealed photoelectrode had lower charge transfer resistance and the IPCE value up to 48.22%. This study is of great significance for the application of Bi2O2S based photoelectrodes in the field of PEC water splitting.
Collapse
Affiliation(s)
- Wenjing Zhang
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Xinyang Liu
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Wei Jin
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Qiujie Li
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Qian Sun
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Enzhou Liu
- School of Chemical Engineering, Northwest University, Xi'an, Shaanxi 710069, PR China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., Hangzhou, Zhejiang 310003, PR China
| | - Hui Miao
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China.
| | - Xiaoyun Hu
- School of Physics, Northwest University, Xi'an, Shaanxi 710127, PR China.
| |
Collapse
|
3
|
Tsao CW, Narra S, Kao JC, Lin YC, Chen CY, Chin YC, Huang ZJ, Huang WH, Huang CC, Luo CW, Chou JP, Ogata S, Sone M, Huang MH, Chang TFM, Lo YC, Lin YG, Diau EWG, Hsu YJ. Dual-plasmonic Au@Cu 7S 4 yolk@shell nanocrystals for photocatalytic hydrogen production across visible to near infrared spectral region. Nat Commun 2024; 15:413. [PMID: 38195553 PMCID: PMC10776726 DOI: 10.1038/s41467-023-44664-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 12/20/2023] [Indexed: 01/11/2024] Open
Abstract
Near infrared energy remains untapped toward the maneuvering of entire solar spectrum harvesting for fulfilling the nuts and bolts of solar hydrogen production. We report the use of Au@Cu7S4 yolk@shell nanocrystals as dual-plasmonic photocatalysts to achieve remarkable hydrogen production under visible and near infrared illumination. Ultrafast spectroscopic data reveal the prevalence of long-lived charge separation states for Au@Cu7S4 under both visible and near infrared excitation. Combined with the advantageous features of yolk@shell nanostructures, Au@Cu7S4 achieves a peak quantum yield of 9.4% at 500 nm and a record-breaking quantum yield of 7.3% at 2200 nm for hydrogen production in the absence of additional co-catalysts. The design of a sustainable visible- and near infrared-responsive photocatalytic system is expected to inspire further widespread applications in solar fuel generation. In this work, the feasibility of exploiting the localized surface plasmon resonance property of self-doped, nonstoichiometric semiconductor nanocrystals for the realization of wide-spectrum-driven photocatalysis is highlighted.
Collapse
Affiliation(s)
- Chun-Wen Tsao
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Sudhakar Narra
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Jui-Cheng Kao
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Yu-Chang Lin
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chun-Yi Chen
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, 226-8503, Japan
| | - Yu-Cheng Chin
- Department of Photonics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Ze-Jiung Huang
- Department of Photonics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Wei-Hong Huang
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Chih-Chia Huang
- Department of Photonics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Chih-Wei Luo
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
- Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Jyh-Pin Chou
- Department of Physics, National Changhua University of Education, Changhua, 50007, Taiwan
| | - Shigenobu Ogata
- Department of Mechanical Science and Bioengineering, Osaka University, Toyonaka, 560-8531, Japan
| | - Masato Sone
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, 226-8503, Japan
| | - Michael H Huang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Tso-Fu Mark Chang
- Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, 226-8503, Japan.
| | - Yu-Chieh Lo
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
| | - Yan-Gu Lin
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Eric Wei-Guang Diau
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
| | - Yung-Jung Hsu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
- International Research Frontiers Initiative, Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, 226-8503, Japan.
| |
Collapse
|
4
|
Dagar P, Ghorai N, Bungla M, Ghosh HN, Ganguli AK. Understanding the charge transfer dynamics of the Cu 2WS 4-CNT-FeOOH ternary composite for photo-electrochemical studies. Phys Chem Chem Phys 2023; 25:30867-30879. [PMID: 37937581 DOI: 10.1039/d3cp03498d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Ternary transition metal chalcogenide (Cu2WS4) is a semiconductor with a band gap of 2.1 eV and could be a promising candidate for photoelectrochemical water splitting and solar energy conversion applications. Despite numerous reports on ternary transition metal chalcogenides, this semiconductor's ultrafast charge transfer dynamics remain unknown. Here, we report on charge carrier dynamics in a pristine Cu2WS4 system with the aid of ultrafast transient (TA) pump-probe spectroscopy and a hot carrier transfer process from Cu2WS4 to multi-walled carbon nanotubes (CNTs) and FeOOH has been observed. Furthermore, we have explored Cu2WS4-FeOOH having a type-II composite for photo-electrochemical (PEC) water oxidation and modified this with the addition of multi-walled carbon nanotubes to expedite the charge-transfer processes and photo-anodic performance. The photo-electrochemical studies demonstrate that the Cu2WS4-CNT, Cu2WS4-FeOOH, and Cu2WS4-CNT-FeOOH provide nearly 3-, 8- and 12-fold enhancement in photocurrent density relative to the bare Cu2WS4 photo-anode at 1.23 V vs. RHE. These photo-electrochemical studies support the results obtained from the TA investigation and further prove the higher charge separation in the ternary composite system. These studies probe the excited states and provide evidence of longer charge separation in the binary and ternary composites, responsible for their remarkable photo-electrochemical performance.
Collapse
Affiliation(s)
- Preeti Dagar
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Punjab-140306, India
| | - Nandan Ghorai
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Punjab-140306, India
| | - Manisha Bungla
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Hirendra N Ghosh
- Institute of Nano Science and Technology, Sector-81, Knowledge City, SAS Nagar, Punjab-140306, India
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
- Department of Chemical Sciences, National Institute of Science Education and Research Bhubaneswar, Jatni, Khurda 752050, Odisha, India
| | - Ashok K Ganguli
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi-110016, India
- Department of Chemical Sciences, Indian Institute of Science Education & Research, Berhampur, Laudigam, Odisha 760003, India
| |
Collapse
|
5
|
Duan W, Han S, Fang Z, Xiao Z, Lin S. In Situ Filling of the Oxygen Vacancies with Dual Heteroatoms in Co 3O 4 for Efficient Overall Water Splitting. Molecules 2023; 28:molecules28104134. [PMID: 37241875 DOI: 10.3390/molecules28104134] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/05/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023] Open
Abstract
Electrocatalytic water splitting is a crucial area in sustainable energy development, and the development of highly efficient bifunctional catalysts that exhibit activity toward both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of paramount importance. Co3O4 is a promising candidate catalyst, owing to the variable valence of Co, which can be exploited to enhance the bifunctional catalytic activity of HER and OER through rational adjustments of the electronic structure of Co atoms. In this study, we employed a plasma-etching strategy in combination with an in situ filling of heteroatoms to etch the surface of Co3O4, creating abundant oxygen vacancies, while simultaneously filling them with nitrogen and sulfur heteroatoms. The resulting N/S-VO-Co3O4 exhibited favorable bifunctional activity for alkaline electrocatalytic water splitting, with significantly enhanced HER and OER catalytic activity compared to pristine Co3O4. In an alkaline overall water-splitting simulated electrolytic cell, N/S-VO-Co3O4 || N/S-VO-Co3O4 showed excellent overall water splitting catalytic activity, comparable to noble metal benchmark catalysts Pt/C || IrO2, and demonstrated superior long-term catalytic stability. Additionally, the combination of in situ Raman spectroscopy with other ex situ characterizations provided further insight into the reasons behind the enhanced catalyst performance achieved through the in situ incorporation of N and S heteroatoms. This study presents a facile strategy for fabricating highly efficient cobalt-based spinel electrocatalysts incorporated with double heteroatoms for alkaline electrocatalytic monolithic water splitting.
Collapse
Affiliation(s)
- Wei Duan
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, No. 58 Renmin Road, Haikou 570228, China
| | - Shixing Han
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, No. 58 Renmin Road, Haikou 570228, China
| | - Zhonghai Fang
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, No. 58 Renmin Road, Haikou 570228, China
| | - Zhaohui Xiao
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, No. 58 Renmin Road, Haikou 570228, China
| | - Shiwei Lin
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, No. 58 Renmin Road, Haikou 570228, China
| |
Collapse
|
6
|
Wang AB, Zhang X, Xu HJ, Gao LJ, Li L, Cao R, Hao QY. Engineering Cu/NiCu LDH Heterostructure Nanosheet Arrays for Highly-Efficient Water Oxidation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093372. [PMID: 37176251 PMCID: PMC10179677 DOI: 10.3390/ma16093372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 03/31/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]
Abstract
The development of stable and efficient electrocatalysts for oxygen evolution reaction is of great significance for electro-catalytic water splitting. Bimetallic layered double hydroxides (LDHs) are promising OER catalysts, in which NiCu LDH has excellent stability compared with the most robust NiFe LDH, but the OER activity is not satisfactory. Here, we designed a NiCu LDH heterostructure electrocatalyst (Cu/NiCu LDH) modified by Cu nanoparticles which has excellent activity and stability. The Cu/NiCu LDH electrocatalyst only needs a low over-potential of 206 mV and a low Tafel slope of 86.9 mV dec-1 at a current density of 10 mA cm-2 and maintains for 70 h at a high current density of 100 mA cm-2 in 1M KOH. X-ray photoelectron spectroscopy (XPS) showed that there was a strong electronic interaction between Cu nanoparticles and NiCu LDH. Density functional theory (DFT) calculations show that the electronic coupling between Cu nanoparticles and NiCu LDH can effectively improve the intrinsic OER activity by optimizing the conductivity and the adsorption energy of oxygen-containing intermediates.
Collapse
Affiliation(s)
- Ao-Bing Wang
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Xin Zhang
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Hui-Juan Xu
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Li-Jun Gao
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Li Li
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Rui Cao
- Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, China
| | - Qiu-Yan Hao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| |
Collapse
|
7
|
Zheng Z, Morgan M, Maji P, Xia X, Zu X, Zhou W. CuO nanorod arrays by gas-phase cation exchange for efficient photoelectrochemical water splitting. RSC Adv 2023; 13:3487-3493. [PMID: 36756593 PMCID: PMC9871730 DOI: 10.1039/d2ra07648a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023] Open
Abstract
CuO has been considered a promising candidate for photoelectrochemical water splitting electrodes owing to its suitable bandgap, favorable band alignments, and earth-abundant nature. In this paper, a novel gas-phase cation exchange method was developed to synthesize CuO nanorod arrays by using ZnO nanorod arrays as the template. ZnO nanorods were fully converted to CuO nanorods with aspect ratios of 10-20 at the temperature range from 350 to 600 °C. The as-synthesized CuO nanorods exhibit a photocurrent as high as 2.42 mA cm-2 at 0 V vs. RHE (reversible hydrogen electrode) under 1.5 AM solar irradiation, demonstrating the potential as the photoelectrode for efficient photoelectrochemical water splitting. Our method provides a new approach for the rational fabrication of high-performance CuO-based nanodevices.
Collapse
Affiliation(s)
- Zhi Zheng
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China Huzhou 313001 P. R. China .,Department of Physics, Advanced Materials Research Institute, University of New Orleans New Orleans LA 70148 USA .,School of Physics, University of Electronic Science and Technology of China Chengdu 611731 P. R. China
| | - Mikhail Morgan
- Department of Physics, Advanced Materials Research Institute, University of New Orleans New Orleans LA 70148 USA
| | - Pramathesh Maji
- Department of Physics, Advanced Materials Research Institute, University of New Orleans New Orleans LA 70148 USA
| | - Xiang Xia
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China Huzhou 313001 P. R. China .,School of Physics, University of Electronic Science and Technology of China Chengdu 611731 P. R. China
| | - Xiaotao Zu
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China Huzhou 313001 P. R. China .,School of Physics, University of Electronic Science and Technology of China Chengdu 611731 P. R. China
| | - Weilie Zhou
- Department of Physics, Advanced Materials Research Institute, University of New Orleans New Orleans LA 70148 USA
| |
Collapse
|
8
|
Hussain S, Vikraman D, Nazir G, Mehran MT, Shahzad F, Batoo KM, Kim HS, Jung J. Development of Binder-Free Three-Dimensional Honeycomb-like Porous Ternary Layered Double Hydroxide-Embedded MXene Sheets for Bi-Functional Overall Water Splitting Reactions. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2886. [PMID: 36014753 PMCID: PMC9412967 DOI: 10.3390/nano12162886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
In this study, a honeycomb-like porous-structured nickel-iron-cobalt layered double hydroxide/Ti3C2Tx (NiFeCo-LDH@MXene) composite was successfully fabricated on a three-dimensional nickel foam using a simple hydrothermal approach. Owing to their distinguishable characteristics, the fabricated honeycomb porous-structured NiFeCo-LDH@MXene composites exhibited outstanding bifunctional electrocatalytic activity for pair hydrogen and oxygen evolution reactions in alkaline medium. The developed NiFeCo-LDH@MXene electrocatalyst required low overpotentials of 130 and 34 mV to attain a current density of 10 mA cm-2 for OER and HER, respectively. Furthermore, an assembled NiFeCo-LDH@MXene‖NiFeCo-LDH@MXene device exhibited a cell voltage of 1.41 V for overall water splitting with a robust firmness for over 24 h to reach 10 mA cm-2 current density, signifying outstanding performance for water splitting reactions. These results demonstrated the promising potential of the designed 3D porous NiFeCo-LDH@MXene sheets as outstanding candidates to replace future green energy conversion devices.
Collapse
Affiliation(s)
- Sajjad Hussain
- Hybrid Materials Center (HMC), Sejong University, Seoul 05006, Korea
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
| | - Dhanasekaran Vikraman
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | - Ghazanfar Nazir
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
| | - Muhammad Taqi Mehran
- School of Chemical and Materials Engineering (SCME), National University of Sciences & Technology (NUST), Islamabad 44000, Pakistan
| | - Faisal Shahzad
- Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad 45650, Pakistan
| | - Khalid Mujasam Batoo
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | - Jongwan Jung
- Hybrid Materials Center (HMC), Sejong University, Seoul 05006, Korea
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
| |
Collapse
|
9
|
Rajagopal S, Thangudu S, Feng JY, Sriram P, Yen TJ, Hwang KC. Hotspots in action: near-infrared light mediated photoelectrochemical oxygen evolution on high index faceted plasmonic gold nanoarchitectures. NANOSCALE 2022; 14:11323-11334. [PMID: 35894176 DOI: 10.1039/d2nr02741k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photo-induced electrochemical water splitting is a fascinating approach to overcome the present energy demands as well as environmental issues. To this end, near-infrared (NIR) photocatalysts stand out as promising candidates (where 53% of the solar light is NIR light) to solve the present energy crisis but the lack of NIR-activated photocatalysts has remained a great challenge for decades. Herein, for the first time, we report the synthesis of high-index faceted plasmonic Au nano-branched 12 tip nanostars, which can absorb the whole spectral region of electromagnetic radiation (UV-vis-NIR), for efficient water splitting. Moreover, the plasmonic hot spots on the Au 12 tip nanostars significantly promote the photoelectrochemical oxygen evolution reaction (OER) under NIR light (915 nm) with long-term stability. Remarkably, the Au 12 tip nanostars exhibit 250-fold enhancement of activity under 915 nm laser irradiation and 6.5-fold enhancement of activity under 532 nm laser irradiation, as compared to the Au NPs. Furthermore, the Finite-Difference Time-Domain (FDTD) study confirmed that the significant photoelectrochemical (PEC) enhancement in the NIR light region could be attributed to the hot-electron injection/plasmonic hot spot mechanism upon localized surface plasmonic resonance (LSPR) excitation. Overall, we anticipate that the present work would help to develop new NIR photoelectrocatalysts for meeting future energy demands.
Collapse
Affiliation(s)
- Sanjeevan Rajagopal
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - Suresh Thangudu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - June-Yen Feng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - Pavithra Sriram
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, Republic of China
| | - Ta-Jen Yen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, Republic of China
| | - Kuo Chu Hwang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| |
Collapse
|
10
|
TiO2 nanoarrays modification by a novel Cobalt-heteroatom doped graphene complex for photoelectrochemical water splitting: An experimental and theoretical study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
11
|
Kanwal A, Sajjad S, Leghari SA, Mersal GAM, Ibrahim MM. Photo-induced charge separation Z-scheme mechanism in ternary Bismuth Sulfide coupled SnS/Al2O3 nanostructure. NEW J CHEM 2022. [DOI: 10.1039/d2nj02607d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The establishment of solid-state Z-scheme heterojunction photocatalytic system to efficiently tailor the photo induced charge separation is of great significance to water purification. Metal sulfides nanoparticles, tin monosulphide (SnS) and...
Collapse
|
12
|
Sitaaraman SR, Nirmala Grace A, Sellappan R. Photoelectrochemical performance of a spin coated TiO 2 protected BiVO 4-Cu 2O thin film tandem cell for unassisted solar water splitting. RSC Adv 2022; 12:31380-31391. [PMID: 36349021 PMCID: PMC9627459 DOI: 10.1039/d2ra05774c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/25/2022] [Indexed: 11/07/2022] Open
Abstract
A tandem cell consisting of a Mo-BiVO4/TiO2/FeOOH photoanode–Cu2O/TiO2/MoS2 photocathode was prepared for unassisted solar water splitting. The protective TiO2 layer was prepared by a cost-effective spin coating technique. The individual Mo-BiVO4/TiO2/FeOOH photoanode and the Cu2O/TiO2/MoS2 photocathode yielded a current density of ∼0.81 mA cm−2 at 1.23 V vs. RHE and ∼−1.88 mA cm−2 at 0 V vs. RHE, respectively under 100 mW cm−2 xenon lamp illumination. From the individual photoelectrochemical analysis, we identify the operating points of the tandem cell as 0.66 V vs. RHE and 0.124 mA cm−2. The positive current density from the operating points proves the possibility of non-zero operation of the tandem cell. Finally, a two-electrode Mo-BiVO4/TiO2/FeOOH-Cu2O/TiO2/MoS2 tandem cell was constructed and analysed for unassisted operation. The obtained unassisted current density of the tandem cell was ∼65.3 μA cm−2 with better stability compared to the bare BiVO4-Cu2O tandem cell. The results prove that the spin coated TiO2 protective layer can be a viable approach to protect the photoelectrodes from photocorrosion with better stability and enhanced photoelectrochemical (PEC) performance. Mo-BiVO4/TiO2/FeOOH photoanode–Cu2O/TiO2/MoS2 photocathode tandem cells with photoelectrochemical stability testing.![]()
Collapse
Affiliation(s)
- S. R. Sitaaraman
- School of Electronics Engineering, Vellore Institute of Technology, Vellore 632014, India
| | - Andrews Nirmala Grace
- Centre for Nanotechnology Research, Vellore Institute of Technology, Vellore 632014, India
| | - Raja Sellappan
- Centre for Nanotechnology Research, Vellore Institute of Technology, Vellore 632014, India
| |
Collapse
|
13
|
Munawar M, Idrees M, Ahmad I, Din HU, Amin B. Intriguing electronic, optical and photocatalytic performance of BSe, M 2CO 2 monolayers and BSe-M 2CO 2 (M = Ti, Zr, Hf) van der Waals heterostructures. RSC Adv 2021; 12:42-52. [PMID: 35424496 PMCID: PMC8978625 DOI: 10.1039/d1ra07569a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/01/2021] [Indexed: 12/20/2022] Open
Abstract
Using density functional (DFT) theory calculations, we have investigated the electronic band structure, optical and photocatalytic response of BSe, M2CO2 (M = Ti, Zr, Hf) monolayers and their corresponding BSe–M2CO2 (M = Ti, Zr, Hf) van der Waals (vdW) heterostructures. Optimized lattice constant, bond length, band structure and bandgap values, effective mass of electrons and holes, work function and conduction and valence band edge potentials of BSe and M2CO2 (M = Ti, Zr, Hf) monolayers are in agreement with previously available data. Binding energies, interlayer distance and Ab initio molecular dynamic simulations (AIMD) calculations show that BSe–M2CO2 (M = Ti, Zr, Hf) vdW heterostructures are stable with specific stacking and demonstrate that these heterostructures might be synthesized in the laboratory. The electronic band structure shows that all the studied vdW heterostructures have indirect bandgap nature – with the CBM and VBM at the Γ–K and Γ-point of BZ for BSe–Ti2CO2, respectively; while for BSe–Zr2CO2 and BSe–Hf2CO2 vdW heterostructures the CBM and VBM lie at the K-point and Γ-point of BZ, respectively. Type-II band alignment in BSe–M2CO2 (M = Ti, Zr, Hf) vdW heterostructures prevent the recombination of electron–hole pairs, and hence are crucial for light harvesting and detection. Absorption spectra are investigated to understand the optical behavior of BSe–M2CO2 (M = Ti, Zr, Hf) vdW heterostructures, where the lowest energy transitions are dominated by excitons. Furthermore, BSe–M2CO2 (M = Ti, Zr, Hf) vdW heterostructures are found to be potential photocatalysts for water splitting at pH = 0, and exhibit enhanced optical properties in the visible light zones. Using density functional theory calculations, we have investigated the electronic band structure, optical and photocatalytic response of BSe, M2CO2 (M = Ti, Zr, Hf) monolayers and their corresponding BSe–M2CO2 (M = Ti, Zr, Hf) van der Waals heterostructures.![]()
Collapse
Affiliation(s)
- M Munawar
- Department of Physics, Abbottabad University of Science & Technology Abbottabad 22010 Pakistan
| | - M Idrees
- Department of Physics, Abbottabad University of Science & Technology Abbottabad 22010 Pakistan
| | - Iftikhar Ahmad
- Center for Computational Materials Science, University of Malakand Chakdara 18800 Pakistan.,Department of Physics, Gomal University DI Khan Pakistan
| | - H U Din
- Department of Physics, Bacha Khan University Charsadda Pakistan
| | - B Amin
- Department of Physics, Abbottabad University of Science & Technology Abbottabad 22010 Pakistan
| |
Collapse
|
14
|
Wu SH, Hsiao CH, Hsieh PL, Huang XF, Huang MH. Growth of CeO 2 nanocubes showing size-dependent optical and oxygen evolution reaction behaviors. Dalton Trans 2021; 50:15170-15175. [PMID: 34617544 DOI: 10.1039/d1dt03150c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CeO2 nanocubes with average sizes of 9, 13, and 18 nm have been synthesized by preparing a slightly basic aqueous mixture of Ce(NO3)3, Na2SO4, and NH4OH and heating the solution to 100 to 150 °C in 4 or 9 h. The nanocubes possess high crystalline quality. Their band gaps decrease gradually beyond the quantum confinement regime from 3.57 eV to 3.45 eV with increasing particle sizes. The 9 nm CeO2 nanocubes have the most positive valence band energy and correspondingly they exhibit the best electrochemical oxygen evolution reaction activity. Since band gaps of semiconductor nanocrystals can be tuned substantially through particle size control to yield different band energies, this fact can be utilized to enhance the electrochemical and photocatalytic properties.
Collapse
Affiliation(s)
- Shi-Hong Wu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Chien-Hsuan Hsiao
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Pei-Lun Hsieh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Xing-Fu Huang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Michael H Huang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan.
| |
Collapse
|
15
|
Chen YA, Wang YT, Moon HS, Yong K, Hsu YJ. Yolk-shell nanostructures: synthesis, photocatalysis and interfacial charge dynamics. RSC Adv 2021; 11:12288-12305. [PMID: 35423745 PMCID: PMC8696994 DOI: 10.1039/d1ra00803j] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/16/2021] [Indexed: 12/18/2022] Open
Abstract
Solar energy has long been regarded as a promising alternative and sustainable energy source. In this regard, photocatalysts emerge as a versatile paradigm that can practically transform solar energy into chemical energy. At present, unsatisfactory conversion efficiency is a major obstacle to the widespread deployment of photocatalysis technology. Many structural engineering strategies have been proposed to address the issue of insufficient activity for semiconductor photocatalysts. Among them, creation of yolk-shell nanostructures which possess many beneficial features, such as large surface area, efficient light harvesting, homogeneous catalytic environment and enhanced molecular diffusion kinetics, has attracted particular attention. This review summarizes the developments that have been made for the preparation and photocatalytic applications of yolk-shell nanostructures. Additional focus is placed on the realization of interfacial charge dynamics and the possibility of achieving spatial separation of charge carriers for this unique nanoarchitecture as charge transfer is the most critical factor determining the overall photocatalytic efficiency. A future perspective that can facilitate the advancement of using yolk-shell nanostructures in sophisticated photocatalytic systems is also presented.
Collapse
Affiliation(s)
- Yi-An Chen
- Department of Materials Science and Engineering, National Chiao Tung University Hsinchu 30010 Taiwan
| | - Yu-Ting Wang
- Department of Materials Science and Engineering, National Chiao Tung University Hsinchu 30010 Taiwan
| | - Hyun Sik Moon
- Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) Pohang 790-784 Korea
| | - Kijung Yong
- Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) Pohang 790-784 Korea
| | - Yung-Jung Hsu
- Department of Materials Science and Engineering, National Chiao Tung University Hsinchu 30010 Taiwan
- Center for Emergent Functional Matter Science, National Chiao Tung University Hsinchu 30010 Taiwan
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 30010 Taiwan
| |
Collapse
|
16
|
Abbas M. Factors influencing the adsorption and photocatalysis of direct red 80 in the presence of a TiO2: Equilibrium and kinetics modeling. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/1747519821989969] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Among the different photocatalysts, TiO2 ( Eg = 3.1 eV, zero charge point (pHpzc = 6.3), and surface = 55 m2/g) is currently the most efficient and the most studied semiconductor due to its strong photocatalytic activity, non-toxicity, and chemical stability. The elimination of DR-80 on TiO2 is studied by adsorption in batch mode and by application of heterogeneous photocatalysis onto TiO2 under UV irradiation. The effects of contact time (0–60 min), initial pH (3–11), dose of the adsorbent (0.5–3 g L−1), and DR-80 concentration (40–60 mg L−1) on the adsorption of DR-80 by TiO2 are studied for optimization of these parameters. The kinetic parameters, rate constants, and equilibrium adsorption capacities are calculated and discussed for each applied theoretical model. The adsorption of DR-80 is well described by the pseudo-first-order kinetic model. The fitting of the adsorption isotherms shows that the models of Langmuir and Temkin offering a better fit and an adsorption 64.102 mg/g at 25 °C of DR-80 are eliminated. The results showed that the photocatalytic efficiency strongly depends on the pH while the initial rate of photodegradation is proportional to the catalyst dose, and becomes almost constant above a threshold value. It was found that the photodegradation is favored at low DR-80 concentrations in accordance with the Langmuir–Hinshelwood model with the constants Kad = 6.5274 L/mg and KL–H = 0.17818 mg L−1 min. However, the adsorption is improved for high DR-80 concentrations. It is found that the degradation depends on both the temperature and the pH with a high elimination rate at high temperature. The photocatalyst TiO2 has a better activity for the degradation of DR-80, compared to some commercial catalysts that have been described in the literature.
Collapse
Affiliation(s)
- Moussa Abbas
- Laboratory of Soft Technologies, Valorization, Physicochemistry of Biological Materials and Biodiversity (LTDVPMBB), Science Faculty, University M’hamed Bougara of Boumerdes, Figuier, Boumerdes, Algeria
| |
Collapse
|
17
|
Kharatzadeh E, Masharian SR, Yousefi R. The effects of S-doping concentration on the photocatalytic performance of SnSe/S-GO nanocomposites. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2020.12.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
18
|
Liu C, Han Z, Feng Y, Dai H, Zhao Y, Han N, Zhang Q, Zou Z. Ultrathin Z-scheme 2D/2D N-doped HTiNbO 5 nanosheets/g-C 3N 4 porous composites for efficient photocatalytic degradation and H 2 generation under visible light. J Colloid Interface Sci 2021; 583:58-70. [PMID: 32977193 DOI: 10.1016/j.jcis.2020.09.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/22/2020] [Accepted: 09/06/2020] [Indexed: 12/29/2022]
Abstract
To realize highly efficient utilization of solar energy for solving problems of environmental pollution and energy shortage has attracted increasing attention. Herein, a two-step exfoliation-restacking process was employed to construct ultrathin Z-scheme two-dimensional (2D)/2D N-doped HTiNbO5 nanosheets/g-C3N4 (RTCN) heterojunction composites with the increased specific surface areas, showing the enhanced photocatalytic performance for rhodamine B (RhB) degradation and hydrogen (H2) generation under visible light irradiation. A 2D/2D heterojunction structure was formed between N-doped H+-restacked HTiNbO5 nanosheets (N-RTNS) and g-C3N4, which was beneficial for the effectively spatial separation of photogenerated charge carriers. The improved photocatalytic activities may be attributed to the synergistic effects of the increased specific surface area, N-doping and 2D/2D heterostructure. The active species of holes (h+), hydroxyl (•OH) and superoxide (•O2-) radicals contributed to RhB photodegradation. A Z-scheme photocatalytic mechanism was proposed over RTCN-2 composite, showing dual advantages of the highly redox ability and efficient charge carrier separation.
Collapse
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China; Eco-Materials and Renewable Energy Research Centre (ERERC), School of Physics, Nanjing University, Nanjing 210093, PR China.
| | - Zitong Han
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Yue Feng
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Hailu Dai
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Yefan Zhao
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Ni Han
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Qinfang Zhang
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
| | - Zhigang Zou
- Eco-Materials and Renewable Energy Research Centre (ERERC), School of Physics, Nanjing University, Nanjing 210093, PR China
| |
Collapse
|
19
|
Nguyen BS, Vo DVN, Kundan S, Nguyen VH. Advanced nanostructured photocatalysts for innovative photocatalytic applications. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2020.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
20
|
Ma Y, Yang X, Gao G, Yan Z, Su H, Zhang B, Lei Y, Zhang Y. Photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation on Bi-doped TiO 2 via tuning band structure and surface hydroxyls. RSC Adv 2020; 10:31442-31452. [PMID: 35520665 PMCID: PMC9056498 DOI: 10.1039/d0ra06309f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/20/2020] [Indexed: 12/21/2022] Open
Abstract
Preparing visible light responsive catalysts for partial oxidation of methanol to methyl formate is a challenging issue. This work addresses the synthesis, characterization and theoretical calculation of Bi doped TiO2 catalysts as well as their photocatalytic performance and reaction mechanism for MF synthesis from methanol. The catalysts were prepared by a simple wet chemical method. The results of the characterization and theoretical calculation evidenced that bismuth was intercalated in the lattice of anatase by the substitution of titanium. Impurity levels were formed in the valence band, conduction band and between the two bands. The Bi 6s and 5p orbitals contributed to the formation of the impurity levels. The photo-excited electrons transited from the valence band via impurity levels, formed by Bi 6s orbitals, to the conduction band. The doping of Bi enhanced surface hydroxyls, reduced the band gaps and raised the valence band edges (VBE) of the Bi doped catalyst. The Bi doped catalysts were visible light responsive due to the reduced band gap. The surface hydroxyls were beneficial to the methanol conversion, and the rise of the VBE enhanced the redox potential of the photogenerated holes. Only moderate redox potentials and sufficient surface hydroxyls could lead to high methanol conversion and MF selectivity. This study is of great significance to the development of the photocatalytic synthesis theory and provides a green route for MF synthesis from methanol. Bi-doped titania is well studied for photocatalytic partial oxidation of methanol to methyl formate under visible light irradiation.![]()
Collapse
Affiliation(s)
- Yue Ma
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Xuzhuang Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Guanjun Gao
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Zhe Yan
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Haiquan Su
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Bingbing Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Yanqiu Lei
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| | - Yanbing Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China
| |
Collapse
|
21
|
Zahra T, Ahmad KS, Thomas AG, Zequine C, Gupta RK, Malik MA, Sohail M. Phyto-inspired and scalable approach for the synthesis of PdO-2Mn 2O 3: a nano-material for application in water splitting electro-catalysis. RSC Adv 2020; 10:29961-29974. [PMID: 35518230 PMCID: PMC9056303 DOI: 10.1039/d0ra04571c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 07/11/2020] [Indexed: 12/23/2022] Open
Abstract
A modified co-precipitation method has been used for the synthesis of a PdO-2Mn2O3 nanocomposite as an efficient electrode material for the electro-catalytic oxygen evolution (OER) and hydrogen evolution reaction (HER). Palladium acetate and manganese acetate in molar ratio 1 : 4 were dissolved in water, and 10 ml of an aqueous solution of phyto-compounds was slowly added until completion of precipitation. The filtered and dried precipitates were then calcined at 450 °C to obtain a blackish brown colored mixture of PdO-2Mn2O3 nanocomposite. These particles were analyzed by ultra violet visible spectrophotometry (UV-vis), infrared spectroscopy (FTIR), powder X-ray diffractometry (XRD), scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) for crystallinity, optical properties, and compositional and morphological makeup. Using Tauc's plot, the direct band gap (3.18 eV) was calculated from the absorption spectra. The average crystallite sizes, as calculated from the XRD, were found to be 15 and 14.55 nm for PdO and Mn2O3, respectively. A slurry of the phyto-fabricated PdO-2Mn2O3 powder was deposited on Ni-foam and tested for electro-catalytic water splitting studies in 1 M KOH solution. The electrode showed excellent OER and HER performance with low over-potential (0.35 V and 121 mV) and Tafel slopes of 115 mV dec-1 and 219 mV dec-1, respectively. The outcomes obtained from this study provide a direction for the fabrication of a cost-effective mixed metal oxide based electro-catalyst via an environmentally benign synthesis approach for the generation of clean energy.
Collapse
Affiliation(s)
- Taghazal Zahra
- Department of Environmental Sciences, Fatima Jinnah Women University The Mall Rawalpindi Pakistan
| | - Khuram Shahzad Ahmad
- Department of Environmental Sciences, Fatima Jinnah Women University The Mall Rawalpindi Pakistan
| | - Andrew Guy Thomas
- Department of Materials, Photon Science Institute and Sir Henry Royce Institute, Alan Turing Building, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Camila Zequine
- Department of Chemistry, Pittsburg State University 1701 South Broadway Street Pittsburg KS 66762 USA
| | - Ram K Gupta
- Department of Chemistry, Pittsburg State University 1701 South Broadway Street Pittsburg KS 66762 USA
| | - Mohammad Azad Malik
- Department of Materials, Photon Science Institute and Sir Henry Royce Institute, Alan Turing Building, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Manzar Sohail
- School of Natural Sciences, National University of Sciences and Technology (NUST) Islamabad Pakistan
| |
Collapse
|
22
|
Mathi S, Jayabharathi J. Enhanced stability and ultrahigh activity of amorphous ripple nanostructured Ni-doped Fe oxyhydroxide electrode toward synergetic electrocatalytic water splitting. RSC Adv 2020; 10:26364-26373. [PMID: 35519769 PMCID: PMC9055439 DOI: 10.1039/d0ra04828c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/09/2020] [Indexed: 01/28/2023] Open
Abstract
The development of high-performance catalysts for oxygen-evolution reaction (OER) is paramount for cost-effective conversion of renewable electricity to fuels and chemicals. Here we report, highly efficient, ultra-durable and earth-abundant Ni@Fe-NP electrocatalysts developed by solvothermal method for oxygen evolution reaction (OER). The newly developed oxygen electrode show prolonged stability and high catalytic-activity in line with water oxidation keeping alkaline condition which requires overpotential of only 211 mV at current density of 10 mA cm−2. Collectively, the as-prepared amorphous Ni@Fe-NP rippled nanostructured electrode is the most effective oxygen evolution electrode in alkaline solution. Therefore, this study will offer exciting new avenues for designing self-supported electrode materials towards water splitting and other applications. The development of high-performance catalysts for oxygen-evolution reaction (OER) is paramount for cost-effective conversion of renewable electricity to fuels and chemicals.![]()
Collapse
Affiliation(s)
- Selvam Mathi
- Department of Chemistry, Material Science Lab, Annamalai University Annamalai Nagar Tamil Nadu-608 002 India
| | - Jayaraman Jayabharathi
- Department of Chemistry, Material Science Lab, Annamalai University Annamalai Nagar Tamil Nadu-608 002 India
| |
Collapse
|
23
|
Jiang Q, Wang S, Li X, Han Z, Zhao C, Di T, Liu S, Cheng Z. Controllable growth of MoS2 nanosheets on TiO2 burst nanotubes and their photocatalytic activity. RSC Adv 2020; 10:40904-40915. [PMID: 35519211 PMCID: PMC9057720 DOI: 10.1039/d0ra08421b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 11/03/2020] [Indexed: 01/02/2023] Open
Abstract
MoS2 nanosheets were grown on TiO2 nanotubes by the simple hydrothermal method for the first time.
Collapse
Affiliation(s)
- Qiushi Jiang
- College of Resources and Environment
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Shang Wang
- College of Resources and Environment
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Xue Li
- College of Information Technology
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Zhaolian Han
- College of Resources and Environment
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Chunli Zhao
- College of Horticulture
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Tingting Di
- Northeast Electric Power Design Institue Co.,LTD. of China Power Engineering Consulting Group
- Changchun 130021
- People's Republic of China
| | - Siyuan Liu
- College of Resources and Environment
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| | - Zhiqiang Cheng
- College of Resources and Environment
- Jilin Agricultural University
- Changchun 130118
- People's Republic of China
| |
Collapse
|
24
|
Ma Z, Shi L, Qu W, Hu Q, Chen R, Wang Y, Chen Z. Microwave-assisted synthesis of an RGO/CdS/TiO2 step-scheme with exposed TiO2 {001} facets and enhanced visible photocatalytic activity. RSC Adv 2020; 10:43447-43458. [PMID: 35519675 PMCID: PMC9058394 DOI: 10.1039/d0ra08597a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/14/2020] [Indexed: 12/19/2022] Open
Abstract
Semiconductor-based heterojunction photocatalysts with a special active crystal surface act as an essential part in environmental remediation and renewable energy technologies. In this study, an RGO/CdS/TiO2 step-scheme with high energy {001} TiO2 facets was successfully fabricated via a microwave-assisted solvothermal method. The photocatalytic performance of as-prepared samples was assessed by degrading methylene blue under visible light irradiation. We found that the photocatalytic activity of the RGO/CdS/TiO2 step-scheme heterojunction was related to the proportion of TiO2. A ternary sample with a TiO2 content of 10 wt% exhibited superior photocatalytic performance, and approximately 99.7% of methylene blue was degraded during 50 min of visible illumination which was much higher than the percentages found for TiO2, CdS, RGO/TiO2, and RGO/CdS. The greatly improved photocatalytic performance is due to the exposure of the reactive {001} surface of TiO2 and the formation of a CdS/TiO2 heterojunction step-scheme, which effectively inhibits the recombination of charge carriers at the heterogeneous interfaces. Moreover, the incorporation of graphene further enhances the visible light harvesting and serves as an electron transport channel for rapidly separating photogenerated carriers. Based on the PL, XPS, photoelectrochemical properties and the free radical capturing experiment results, a possible photodegradation mechanism was proposed. The photocatalytic enhancement of RGO/CdS/TiO2 is due to the high-energy {001} surface of TiO2 and CdS forming a stepped heterojunction, which is dispersed on the surface of reduced graphene oxide.![]()
Collapse
Affiliation(s)
- Zilun Ma
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Liyan Shi
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Wenwen Qu
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
- Key Laboratory of Unconventional Metallurgy Education Ministry
| | - Qiong Hu
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Ruifang Chen
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Yijun Wang
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Zhen Chen
- Faculty of Science
- Kunming University of Science and Technology
- Kunming 650500
- China
| |
Collapse
|