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de Gyves J, Molina-Ruiz LG, Rutz-López E, Ocampo AL, Gutiérrez-Sánchez A, Munguía-Acevedo NM, Peña-Medina F, Esquivel-Peña V. Enhanced performance of glycerol electro-oxidation in alkaline media using bimetallic Au-Cu NPs supported by MWCNTs and reducible metal oxides. Front Chem 2023; 11:1165303. [PMID: 37465358 PMCID: PMC10351873 DOI: 10.3389/fchem.2023.1165303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/13/2023] [Indexed: 07/20/2023] Open
Abstract
Electrochemical technologies for valorizing glycerol, a byproduct of biodiesel production, into electric energy and value-added chemical products continue to be technologically and economically challenging. In this field, an ongoing challenge is developing more active, stable, and low-cost heterogeneous catalysts for the glycerol electro-oxidation reaction (GlyEOR). This paper reports the influence of the preparation procedure, which involves intermatrix synthesis (Cu and Au NPs), followed by galvanic displacement (Cu-Au NPs) in previously functionalized multi-walled carbon nanotubes (MWCNTs). It also discusses the role of the supports, CeO2 NPs, and TiO2 NPs, obtained by a hydrothermal microwave-assisted procedure, on the electroactivity of a hybrid bimetallic Cu-Au/MWCNT/MO2 catalyst in the GlyEOR in alkaline media. The electrocatalytic behavior was studied and discussed in terms of structure, composition, and electroactivity of the synthesized materials, which were determined by Fourier-transform infrared spectroscopy (FTIR), flame atomic absorption spectroscopy (FAAS), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), X-ray photoelectronic spectroscopy (XPS), and cyclic voltammetry (CV). In addition, the role of the oxidation states of Cu and Au in the as-prepared catalysts (Cu/MWCNT, Au/MWCNT, Cu-Au/MWCNT, Cu-Au/MWCNT-CeO2, and Cu-Au/MWCNT-TiO2) was demonstrated. It was concluded that the preparation method of metal NPs for the controlled formation of the most catalytically active oxidation states of Cu and Au, together with the presence of a conductive and oxophilic microenvironment provided by carbon nanotubes and facile reducible oxides in optimized compositions, allows for an increase in the catalytic performance of synthesized catalysts in the GlyEOR.
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Camposeco R, Zanella R. Multifunctional Pt-Cu/TiO2 nanostructures and their performance in oxidation of soot, formaldehyde, and carbon monoxide reactions. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.06.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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3
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Jia H, Wong YL, Wang B, Xing G, Tsoi CC, Wang M, Zhang W, Jian A, Sang S, Lei D, Zhang X. Enhanced solar water splitting using plasmon-induced resonance energy transfer and unidirectional charge carrier transport. OPTICS EXPRESS 2021; 29:34810-34825. [PMID: 34809262 DOI: 10.1364/oe.440777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Solar water splitting by photoelectrochemical (PEC) reactions is promising for hydrogen production. The gold nanoparticles (AuNPs) are often applied to promote the visible response of wideband photocatalysts. However, in a typical TiO2/AuNPs structure, the opposite transfer direction of excited electrons between AuNPs and TiO2 under visible light and UV light severely limits the solar PEC performance. Here we present a unique Pt/TiO2/Cu2O/NiO/AuNPs photocathode, in which the NiO hole transport layer (HTL) is inserted between AuNPs and Cu2O to achieve unidirectional transport of charge carriers and prominent plasmon-induced resonance energy transfer (PIRET) between AuNPs and Cu2O. The measured applied bias photon-to-current efficiency and the hydrogen production rate under AM 1.5G illumination can reach 1.5% and 16.4 μmol·cm-2·h-1, respectively. This work is original in using the NiO film as the PIRET spacer and provides a promising photoelectrode for energy-efficient solar water splitting.
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Lettieri S, Pavone M, Fioravanti A, Santamaria Amato L, Maddalena P. Charge Carrier Processes and Optical Properties in TiO 2 and TiO 2-Based Heterojunction Photocatalysts: A Review. MATERIALS 2021; 14:ma14071645. [PMID: 33801646 PMCID: PMC8036967 DOI: 10.3390/ma14071645] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023]
Abstract
Photocatalysis based technologies have a key role in addressing important challenges of the ecological transition, such as environment remediation and conversion of renewable energies. Photocatalysts can in fact be used in hydrogen (H2) production (e.g., via water splitting or photo-reforming of organic substrates), CO2 reduction, pollution mitigation and water or air remediation via oxidation (photodegradation) of pollutants. Titanium dioxide (TiO2) is a “benchmark” photocatalyst, thanks to many favorable characteristics. We here review the basic knowledge on the charge carrier processes that define the optical and photophysical properties of intrinsic TiO2. We describe the main characteristics and advantages of TiO2 as photocatalyst, followed by a summary of historical facts about its application. Next, the dynamics of photogenerated electrons and holes is reviewed, including energy levels and trapping states, charge separation and charge recombination. A section on optical absorption and optical properties follows, including a discussion on TiO2 photoluminescence and on the effect of molecular oxygen (O2) on radiative recombination. We next summarize the elementary photocatalytic processes in aqueous solution, including the photogeneration of reactive oxygen species (ROS) and the hydrogen evolution reaction. We pinpoint the TiO2 limitations and possible ways to overcome them by discussing some of the “hottest” research trends toward solar hydrogen production, which are classified in two categories: (1) approaches based on the use of engineered TiO2 without any cocatalysts. Discussed topics are highly-reduced “black TiO2”, grey and colored TiO2, surface-engineered anatase nanocrystals; (2) strategies based on heterojunction photocatalysts, where TiO2 is electronically coupled with a different material acting as cocatalyst or as sensitizer. Examples discussed include TiO2 composites or heterostructures with metals (e.g., Pt-TiO2, Au-TiO2), with other metal oxides (e.g., Cu2O, NiO, etc.), direct Z-scheme heterojunctions with g-C3N4 (graphitic carbon nitride) and dye-sensitized TiO2.
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Affiliation(s)
- Stefano Lettieri
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello”, Consiglio Nazionale delle Ricerche (CNR-ISASI), Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy
- Correspondence: ; Tel.: +39-081676809
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
| | - Ambra Fioravanti
- Institute of Science and Technology for Sustainable Energy and Mobility, Consiglio Nazionale delle Ricerche (CNR-STEMS), Via Canal Bianco 28, 44124 Ferrara, Italy;
| | | | - Pasqualino Maddalena
- Department of Physics “E. Pancini”, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
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Fabrication of a Cu2O-Au-TiO2 Heterostructure with Improved Photocatalytic Performance for the Abatement of Hazardous Toluene and α-Pinene Vapors. Catalysts 2020. [DOI: 10.3390/catal10121434] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In the current research, a Cu2O-Au-TiO2 heterostructure was fabricated via a step-wise photodeposition route to determine its possible application in the photocatalytic oxidation of hazardous vapors. The results of electron microscopy and X-ray photoelectron spectroscopy confirm the successful fabrication of the Cu2O-Au-TiO2 heterostructure. Strong absorption in the visible region, along with a slight red-shift in the absorption edge, was observed in the UV–vis diffuse reflectance spectrum of Cu2O-Au-TiO2 composite, which implies that the composite can generate a greater number of photoexcited charges necessary for photocatalytic reaction. Toluene and α-pinene, as common gas contaminants in the indoor atmosphere, were employed to assess the photooxidation efficiency of the Cu2O-Au-TiO2 composite. Importantly, photocatalytic activity results indicate that the Cu2O-Au-TiO2 composite showed excellent photodegradation performance compared to pure TiO2 and Cu2O-TiO2 and Au-TiO2, where photocatalytic efficiency was approximately 92.9% and 99.9% for toluene and α-pinene, respectively, under standard daylight illumination. The increased light-harvesting capacity and boosted separation efficiency of electron-hole pairs were mainly accountable for improved degradation performance of the Cu2O-Au-TiO2 composite. In addition, the degradation efficiencies for toluene and α-pinene by the Cu2O-Au-TiO2 composite were also examined under three different light sources: 0.32 W white, blue and violet LEDs. The findings of this work suggested a great promise of effective photooxidation of gas pollutants by the Cu2O-Au-TiO2 composite.
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Alegría M, Aliaga J, Ballesteros L, Sotomayor-Torres C, González G, Benavente E. Layered Nanocomposite 2D-TiO2 with Cu2O Nanoparticles as an Efficient Photocatalyst for 4-Chlorophenol Degradation and Hydrogen Evolution. Top Catal 2020. [DOI: 10.1007/s11244-020-01360-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shahvaranfard F, Ghigna P, Minguzzi A, Wierzbicka E, Schmuki P, Altomare M. Dewetting of PtCu Nanoalloys on TiO 2 Nanocavities Provides a Synergistic Photocatalytic Enhancement for Efficient H 2 Evolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38211-38221. [PMID: 32706239 DOI: 10.1021/acsami.0c10968] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We investigate the co-catalytic activity of PtCu alloy nanoparticles for photocatalytic H2 evolution from methanol-water solutions. To produce the photocatalysts, a few-nanometer-thick Pt-Cu bilayers are deposited on anodic TiO2 nanocavity arrays and converted by solid-state dewetting via a suitable thermal treatment into bimetallic PtCu nanoparticles. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results prove the formation of PtCu nanoalloys that carry a shell of surface oxides. X-ray absorption near-edge structure (XANES) data support Pt and Cu alloying and indicate the presence of lattice disorder in the PtCu nanoparticles. The PtCu co-catalyst on TiO2 shows a synergistic activity enhancement and a significantly higher activity toward photocatalytic H2 evolution than Pt- or Cu-TiO2. We propose the enhanced activity to be due to Pt-Cu electronic interactions, where Cu increases the electron density on Pt, favoring a more efficient electron transfer for H2 evolution. In addition, Cu can further promote the photoactivity by providing additional surface catalytic sites for hydrogen recombination. Remarkably, when increasing the methanol concentration up to 50 vol % in the reaction phase, we observe for PtCu-TiO2 a steeper activity increase compared to Pt-TiO2. A further increase in methanol concentration (up to 80 vol %) causes for Pt-TiO2 a clear activity decay, while PtCu-TiO2 still maintains a high level of activity. This suggests improved robustness of PtCu nanoalloys against poisoning from methanol oxidation products such as CO.
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Affiliation(s)
- Fahimeh Shahvaranfard
- Institute for Surface Science and Corrosion WW4-LKO, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
| | - Paolo Ghigna
- Dipartimento di Chimica, Università degli Studi di Pavia, Viale Taramelli 13, 27100 Pavia, Italy
| | - Alessandro Minguzzi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
| | - Ewa Wierzbicka
- Institute for Surface Science and Corrosion WW4-LKO, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
| | - Patrik Schmuki
- Institute for Surface Science and Corrosion WW4-LKO, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, 80203 Jeddah, Kingdom of Saudi Arabia
| | - Marco Altomare
- Institute for Surface Science and Corrosion WW4-LKO, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
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Spanu D, Minguzzi A, Recchia S, Shahvardanfard F, Tomanec O, Zboril R, Schmuki P, Ghigna P, Altomare M. An Operando X-ray Absorption Spectroscopy Study of a NiCu−TiO2 Photocatalyst for H2 Evolution. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01373] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Davide Spanu
- Department of Science and High Technology, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Alessandro Minguzzi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
| | - Sandro Recchia
- Department of Science and High Technology, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Fahimeh Shahvardanfard
- Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
| | - Ondřej Tomanec
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Patrik Schmuki
- Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- Chemistry Department, Faculty of Science, King Abdulaziz University, 80203 Jeddah, Saudi Arabia Kingdom
| | - Paolo Ghigna
- Dipartimento di Chimica, Università degli Studi di Pavia, Viale Taramelli 13, 27100 Pavia, Italy
| | - Marco Altomare
- Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
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Inverse iron oxide/metal catalysts from galvanic replacement. Nat Commun 2020; 11:3269. [PMID: 32601487 PMCID: PMC7324589 DOI: 10.1038/s41467-020-16830-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/24/2020] [Indexed: 11/16/2022] Open
Abstract
Key chemical transformations require metal and redox sites in proximity at interfaces; however, in traditional oxide-supported materials, this requirement is met only at the perimeters of metal nanoparticles. We report that galvanic replacement can produce inverse FeOx/metal nanostructures in which the concentration of oxide species adjoining metal domains is maximal. The synthesis involves reductive deposition of rhodium or platinum and oxidation of Fe2+ from magnetite (Fe3O4). We discovered a parallel dissolution and adsorption of Fe2+ onto the metal, yielding inverse FeOx-coated metal nanoparticles. This nanostructure exhibits the intrinsic activity in selective CO2 reduction that simple metal nanoparticles have only at interfaces with the support. By enabling a simple way to control the surface functionality of metal particles, our approach is not only scalable but also enables a versatile palette for catalyst design. While typical catalysts involve oxide-supported metals, inverse catalysts of oxides on metal supports offer an attractive alternative. Here, authors prepare FeOx-coated Rh nanoparticles via galvanic replacement and dissolution-precipitation to form effective CO2 reduction catalysts.
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12
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Nehru R, Gopi PK, Chen SM. Enhanced sensing of hazardous 4-nitrophenol by a graphene oxide–TiO2 composite: environmental pollutant monitoring applications. NEW J CHEM 2020. [DOI: 10.1039/c9nj06176b] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The accurate detection of hazardous 4-nitrophenol (4-NP) is deemed essential for the environment and human health.
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Affiliation(s)
- Raja Nehru
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 10608
- Taiwan
| | - Praveen Kumar Gopi
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 10608
- Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 10608
- Taiwan
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Li L, Yan Y, Liu H, Du J, Fu S, Zhao F, Xu SM, Zhou J. Hollow core/shell β-Bi2O3@WS2 p–n heterojunction for efficient photocatalytic degradation of fluoroquinolones: a theoretical and experimental study. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01594a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient visible-light-driven β-Bi2O3@WS2 p–n core–shell heterostructure was rationally designed using theoretical calculations and then fabricated via a facile self-assembly method.
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Affiliation(s)
- Li Li
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Yunhui Yan
- Department of Chemistry
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Haiping Liu
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Jinge Du
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Shuai Fu
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Fengying Zhao
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
| | - Si-Min Xu
- College of Chemistry
- Nankai University
- Tianjin 300071
- PR China
| | - Jianguo Zhou
- School of Environment
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control (Ministry of Education)
- Henan Engineering Laboratory of Environmental Functional Materials and Pollution Control
- Henan Normal University
- Xinxiang 453007
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14
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Abstract
Production of H2, O2, and some useful chemicals by solar water splitting is widely expected to be one of the ultimate technologies in solving energy and environmental problems worldwide. Plasmonic enhancement of photocatalytic water splitting is attracting much attention. However, the enhancement factors reported so far are not as high as expected. Hence, further investigation of the plasmonic photocatalysts for water splitting is now needed. In this paper, recent work demonstrating plasmonic photocatalytic water splitting is reviewed. Particular emphasis is given to the fabrication process and the morphological features of the plasmonic photocatalysts.
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15
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Li H, Zhong J, Zhu H, Yang Y, Ding M, Luo L, Huo Y, Li H. Hybrid Cu2O/TiO2 Nanocomposites with Enhanced Photocatalytic Antibacterial Activity toward Acinetobacter Baumannii. ACS APPLIED BIO MATERIALS 2019; 2:4892-4903. [DOI: 10.1021/acsabm.9b00644] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Huifan Li
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jiahui Zhong
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Huijuan Zhu
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Yuping Yang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Mengna Ding
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Liulin Luo
- Shanghai Pulmonary Hospital, Shanghai 200433, China
| | - Yuning Huo
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Hexing Li
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
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16
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Hu Z, Mi Y, Ji Y, Wang R, Zhou W, Qiu X, Liu X, Fang Z, Wu X. Multiplasmon modes for enhancing the photocatalytic activity of Au/Ag/Cu 2O core-shell nanorods. NANOSCALE 2019; 11:16445-16454. [PMID: 31441922 DOI: 10.1039/c9nr03943k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
One of the critical challenges for semiconductor photocatalysis is the high efficiency utilization of solar energy. For plasmonic metal-semiconductor photocatalysts, the photocatalytic activity over an extended wavelength range for a photoresponsive semiconductor could be significantly improved either via the direct electron transfer (DET) or via the plasmon-induced resonant energy transfer (PIRET). Still, the narrow spectral overlap of plasmon and the semiconductor band edge is a key factor in restricting the development of PIRET. Herein, we have introduced a simple and versatile strategy to realize a broad spectral overlap by creating multipolar plasmon resonances near the semiconductor band edge. Cu2O coated Au/Ag nanorods (NRs) were prepared using a facile wet chemistry method. Transverse plasmon modes of Au/Ag/Cu2O NRs can split into dipole and octupole plasmon modes. The core aspect ratio and shell thickness could be used to regulate these two modes for extending the spectral overlap of plasmon resonance and the Cu2O band edge. Au/Ag/Cu2O NRs were found to display enhanced visible light photocatalytic activity compared to spherical Au/Ag/Cu2O nanoparticles. The enhancement mechanism was ascribed to both dipole and octupole plasmon modes boosting electron-hole separation in Cu2O via PIRET as confirmed by transient absorption measurements.
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Affiliation(s)
- Zhijian Hu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Mi
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yinglu Ji
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Wang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weiya Zhou
- Institute of Physics, Chinese Academy of Science, Beijing 100190, China
| | - Xiaohui Qiu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinfeng Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheyu Fang
- Institute of Physics, Peking University, Beijing 100190, China
| | - Xiaochun Wu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
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Meng A, Zhang L, Cheng B, Yu J. Dual Cocatalysts in TiO 2 Photocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807660. [PMID: 31148244 DOI: 10.1002/adma.201807660] [Citation(s) in RCA: 277] [Impact Index Per Article: 55.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/17/2019] [Indexed: 05/22/2023]
Abstract
Semiconductor photocatalysis is recognized as a promising strategy to simultaneously address energy needs and environmental pollution. Titanium dioxide (TiO2 ) has been investigated for such applications due to its low cost, nontoxicity, and high chemical stability. However, pristine TiO2 still suffers from low utilization of visible light and high photogenerated-charge-carrier recombination rate. Recently, TiO2 photocatalysts modified by dual cocatalysts with different functions have attracted much attention due to the extended light absorption, enhanced reactant adsorption, and promoted charge-carrier-separation efficiency granted by various cocatalysts. Recent progress on the component and structural design of dual cocatalysts in TiO2 photocatalysts is summarized. Depending on their components, dual cocatalysts decorated on TiO2 photocatalysts can be divided into the following categories: bimetallic cocatalysts, metal-metal oxide/sulfide cocatalysts, metal-graphene cocatalysts, and metal oxide/sulfide-graphene cocatalysts. Depending on their architecture, they can be categorized into randomly deposited binary cocatalysts, facet-dependent selective-deposition binary cocatalysts, and core-shell structural binary cocatalysts. Concluding perspectives on the challenges and opportunities for the further exploration of dual cocatalyst-modified TiO2 photocatalysts are presented.
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Affiliation(s)
- Aiyun Meng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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18
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Qin L, Zeng G, Lai C, Huang D, Zhang C, Cheng M, Yi H, Liu X, Zhou C, Xiong W, Huang F, Cao W. Synthetic strategies and application of gold-based nanocatalysts for nitroaromatics reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 652:93-116. [PMID: 30359806 DOI: 10.1016/j.scitotenv.2018.10.215] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 06/08/2023]
Abstract
With the increasing requirement of efficient organic transformations on the basic concept of Green Sustainable Chemistry, the development of highly efficient catalytic reaction system is greatly desired. In this case, gold (Au)-based nanocatalysts are promising candidates for catalytic reaction, especially for the reduction of nitroaromatics. They have attracted wide attention and well developed in the application of nitroaromatics reduction because of the unique properties compared with that of other conventional metal-based catalysts. With this respect, this review proposes recent trends in the application of Au nanocatalysts for efficient reduction process of nitroaromatics. Some typical approaches are compared and discussed to guide the synthesis of highly efficient Au nanocatalysts. The mechanism on the use of H2 and NaBH4 solution as the source of hydrogen is compared, and that proposed under light irradiation is discussed. The high and unique catalytic activity of some carriers, such as oxides and carbons-based materials, based on different sizes, structures, and shapes of supported Au nanocatalysts for nitroaromatics reduction are described. The catalytic performance of Au combining with other metal nanoparticles by alloy or doping, like multi-metal nanoparticles system, is further discussed. Finally, a short discussion is introduced to compare the catalysis with other metallic nanocatalysts.
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Affiliation(s)
- Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China.
| | - Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China.
| | - Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Chen Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Min Cheng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Huan Yi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Xigui Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Chengyun Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Weiping Xiong
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Fanglong Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
| | - Weicheng Cao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, PR China
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19
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Praveen AE, Samanta T, Ganguli S, Mahalingam V. Efficient Photodegradation of Organic Pollutants By Using a Bi
2
CuO
4
/BiPO
4
Heterojunction Photocatalyst. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201800226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Athma E Praveen
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER), Kolkata Mohanpur, West Bengal 741252 India
| | - Tuhin Samanta
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER), Kolkata Mohanpur, West Bengal 741252 India
| | - Sagar Ganguli
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER), Kolkata Mohanpur, West Bengal 741252 India
| | - Venkataramanan Mahalingam
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER), Kolkata Mohanpur, West Bengal 741252 India
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20
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Cao M, Wang H, Ji S, Zhao Q, Pollet BG, Wang R. Hollow core-shell structured Cu2O@Cu1.8S spheres as novel electrode for enzyme free glucose sensing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 95:174-182. [DOI: 10.1016/j.msec.2018.10.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 09/05/2018] [Accepted: 10/24/2018] [Indexed: 12/30/2022]
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21
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Jian A, Wang M, Wang L, Zhang B, Sang S, Zhang X. One-pot synthesis of Cu2O/C@H-TiO2 nanocomposites with enhanced visible-light photocatalytic activity. RSC Adv 2019; 9:41540-41548. [PMID: 35541613 PMCID: PMC9076567 DOI: 10.1039/c9ra07767g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/09/2019] [Indexed: 11/21/2022] Open
Abstract
As an environment-friendly semiconductor, titanium dioxide (TiO2), which can effectively convert solar energy to chemical energy, is a crucial material in solar energy conversion research. However, it has several technical limitations for environment protection and energy industries, such as low photocatalytic efficiency and a narrow spectrum response. In this study, a unique mesoporous Cu2O/C@H-TiO2 nanocomposite is proposed to solve these issues. Polystyrene beads ((C8H8)n, PS) are utilized as templates to prepare TiO2 hollow microspheres. Cu2O nanocomposites and amorphous carbon are deposited by a one-pot method on the surface of TiO2 hollow spheres. After the heterojunction is formed between the two semiconductor materials, the difference in energy levels can effectively separate the photogenerated e−–h+ pairs, thereby greatly improving the photocatalytic efficiency. Furthermore, due to the visible band absorption of Cu2O, the absorption range of the prepared nanocomposites is expanded to the whole solar spectrum. Amorphous carbon, as a Cu2O reduction reaction concomitant product, can further improve the electron conduction characteristics between Cu2O and TiO2. The structure and chemical composition of the obtained nanocomposites are characterized by a series of techniques (such as SEM, EDS, TEM, XRD, FTIR, XPS, DRS, PL, MS etc.). The experimental results of the degradation of methylene blue (MB) aqueous solution demonstrate that the degradation efficiency of Cu2O/C@H-TiO2 nanocomposites is about 3 times as fast as that of pure TiO2 hollow microspheres, and a more absolute degradation can be achieved. Herein, a recyclable photocatalyst with high degradation efficiency and a whole solar spectrum response is proposed and fabricated, and would find useful applications in environment protection, and optoelectronic devices. As an environment-friendly semiconductor, titanium dioxide (TiO2), which can effectively convert solar energy to chemical energy, is a crucial material in solar energy conversion research.![]()
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Affiliation(s)
- Aoqun Jian
- MicroNano System Research Center
- College of Information and Computer
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Meiling Wang
- MicroNano System Research Center
- College of Information and Computer
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Leiyang Wang
- MicroNano System Research Center
- College of Information and Computer
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Bo Zhang
- MicroNano System Research Center
- College of Information and Computer
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Shengbo Sang
- MicroNano System Research Center
- College of Information and Computer
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Xuming Zhang
- Department of Applied Physics
- Hong Kong Polytechnic University
- Kowloon
- China
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22
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Cu-Doped TiO2: Visible Light Assisted Photocatalytic Antimicrobial Activity. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8112067] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Surface contamination by microbes is a major public health concern. A damp environment is one of potential sources for microbe proliferation. Smart photocatalytic coatings on building surfaces using semiconductors like titania (TiO2) can effectively curb this growing threat. Metal-doped titania in anatase phase has been proven as a promising candidate for energy and environmental applications. In this present work, the antimicrobial efficacy of copper (Cu)-doped TiO2 (Cu-TiO2) was evaluated against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) under visible light irradiation. Doping of a minute fraction of Cu (0.5 mol %) in TiO2 was carried out via sol-gel technique. Cu-TiO2 further calcined at various temperatures (in the range of 500–700 °C) to evaluate the thermal stability of TiO2 anatase phase. The physico-chemical properties of the samples were characterized through X-ray diffraction (XRD), Raman spectroscopy, X-ray photo-electron spectroscopy (XPS) and UV–visible spectroscopy techniques. XRD results revealed that the anatase phase of TiO2 was maintained well, up to 650 °C, by the Cu dopant. UV–vis results suggested that the visible light absorption property of Cu-TiO2 was enhanced and the band gap is reduced to 2.8 eV. Density functional theory (DFT) studies emphasize the introduction of Cu+ and Cu2+ ions by replacing Ti4+ ions in the TiO2 lattice, creating oxygen vacancies. These further promoted the photocatalytic efficiency. A significantly high bacterial inactivation (99.9999%) was attained in 30 min of visible light irradiation by Cu-TiO2.
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23
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Deng Y, Tang L, Feng C, Zeng G, Wang J, Lu Y, Liu Y, Yu J, Chen S, Zhou Y. Construction of Plasmonic Ag and Nitrogen-Doped Graphene Quantum Dots Codecorated Ultrathin Graphitic Carbon Nitride Nanosheet Composites with Enhanced Photocatalytic Activity: Full-Spectrum Response Ability and Mechanism Insight. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42816-42828. [PMID: 29171258 DOI: 10.1021/acsami.7b14541] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The full utilization of solar energy has attracted great attention in the photocatalysis and environmental pollutant control. In this study, the local surface plasmon resonance effect of Ag nanoparticles (Ag NPs) with the upconversion property of nitrogen-doped graphene quantum dots (N-GQDs) was first combined for the formation of ternary Ag/N-GQDs/g-C3N4 nanocomposites. The prepared material presents enhanced full-spectrum light response ability, even in near-infrared (NIR) light. The experiment results disclosed that the 0.5% N-GQDs and 2.0% Ag NPs co-doped g-C3N4 show the highest photocatalytic activity, achieving 92.8 and 31.3% removal efficiency under full-spectrum light and NIR light irradiation, respectively, which was three-fold than that of pristine g-C3N4. The boosted photocatalytic activity can be attributed to the synergistic effect among the g-C3N4, N-GQDs, and Ag NPs. The g-C3N4 nanosheets can serve as the reaction matrix and support for the dispersion of N-GQDs and Ag NPs, inhibiting their agglomeration. The existence of Ag NPs and N-GQDs can promote the light absorption and transfer ability, leading to the generation of more photoinduced charges. Simultaneously, N-GQDs and Ag NPs can efficiently transfer and reserve electrons, which can accelerate the photoinduced electrons' migration, inhibiting the recombination. The comprehensive effect of the reasons mentioned above resulted in the unique photocatalytic activity of the prepared Ag/N-GQDs/g-C3N4 nanocomposites. This study provides a new strategy for the formation of highly efficient photocatalysts with broad-spectrum light response ability and the potential for realistic wastewater pollution control.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University , Changsha 410128, China
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24
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AlGhamdi H, Katsiev K, Wahab AK, Llorca J, Idriss H. Up-conversion luminescence coupled to plasmonic gold nanorods for light harvesting and hydrogen production. Chem Commun (Camb) 2017; 53:13051-13054. [PMID: 29165446 DOI: 10.1039/c7cc07969a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conversion of infrared light to visible-light which allows a larger fraction of sun-light to be used is needed to improve light-harvesting. In this work a tri-functional material composed of an up-converter (NaYF4-Yb-Tm), plasmonic gold nanorods and CdS was made photocatalytically active using 980 nm wavelength light for the reduction of H+ to H2.
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Affiliation(s)
- H AlGhamdi
- Corporate Research & Development (CRD), Saudi Basic Industries Corporation (SABIC) KAUST, Thuwal 23955-6900, Saudi Arabia.
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25
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Hinojosa-Reyes M, Camposeco-Solís R, Zanella R, Rodríguez González V. Hydrogen production by tailoring the brookite and Cu 2O ratio of sol-gel Cu-TiO 2 photocatalysts. CHEMOSPHERE 2017; 184:992-1002. [PMID: 28658742 DOI: 10.1016/j.chemosphere.2017.06.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 05/10/2017] [Accepted: 06/15/2017] [Indexed: 06/07/2023]
Abstract
Cu-TiO2 photocatalysts were prepared by the sol-gel method. Copper loadings from, 1.0 to 5.0 wt % were used. The materials were annealed at different temperatures (from 400 to 600 °C) to study the formation of brookite and copper ionic species. The photocatalysts were characterized by X-ray diffraction, UV-vis, Raman and XPS spectroscopies, H2-temperature programmed reduction (TPR), N2 physisorption, and SEM-EDS to quantify the actual copper loadings and characterize morphology. The photocatalysts were evaluated during the hydrogen photocatalytic production using an ethanolic solution (50% v/v) under UV and visible radiation. The best hydrogen production was performed by Ti-Cu 1.0 with an overall hydrogen production that was five times higher than that obtained with photolysis. This sample had an optimal thermal treatment at 500 °C, and at this temperature, the Cu2O and brookite/anatase ratio boosted the photocatalytic production of hydrogen. In addition, a deactivation test was carried out for the most active sample (TiO2-Cu 1.0), showing unchanged H2 production for three cycles with negligible Cu lixiviation. The activity of hydrogen-through-copper production reported in this research work is comparable with the one featured by noble metals and that reported in the literature for doped TiO2 materials.
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Affiliation(s)
- Mariana Hinojosa-Reyes
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, S.L.P., 78000, México, Mexico.
| | - Roberto Camposeco-Solís
- División de Materiales Avanzados, IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa San José 2055, Col. Lomas 4a. sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
| | - Rodolfo Zanella
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, A. P. 70-186, Delegación Coyoacán, C.P. 04510, México D. F., Mexico
| | - Vicente Rodríguez González
- División de Materiales Avanzados, IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa San José 2055, Col. Lomas 4a. sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico
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26
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In situ plasmonic Au nanoparticle anchored nickel ferrite: An efficient plasmonic photocatalyst for fluorescein-sensitized hydrogen evolution under visible light irradiation. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.06.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Majeed I, Nadeem MA, Kanodarwala FK, Hussain E, Badshah A, Hussain I, Stride JA, Nadeem MA. Controlled Synthesis of TiO2Nanostructures: Exceptional Hydrogen Production in Alcohol-Water Mixtures over Cu(OH)2-Ni(OH)2/TiO2Nanorods. ChemistrySelect 2017. [DOI: 10.1002/slct.201701080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Imran Majeed
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Muhammad A. Nadeem
- Department of Environmental Sciences; Quaid-i-Azam University; Islamabad 45320 Pakistan, Present address SABIC- Corporate Research and Development (CRD) at KAUST, Thuwal 23955, Saudi Arabia
| | | | - Ejaz Hussain
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Amin Badshah
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Irshad Hussain
- Department of Chemistry; SBA School of Science and Engineering (SBASSE); Lahore University of Management Sciences (LUMS); Lahore Pakistan
| | - John A. Stride
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
| | - Muhammad Arif Nadeem
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
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28
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On the “possible” synergism of the different phases of TiO2 in photo-catalysis for hydrogen production. J Catal 2017. [DOI: 10.1016/j.jcat.2017.04.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Liu J, Ke J, Li D, Sun H, Liang P, Duan X, Tian W, Tadé MO, Liu S, Wang S. Oxygen Vacancies in Shape Controlled Cu 2O/Reduced Graphene Oxide/In 2O 3 Hybrid for Promoted Photocatalytic Water Oxidation and Degradation of Environmental Pollutants. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11678-11688. [PMID: 28301134 DOI: 10.1021/acsami.7b01605] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A novel shape controlled Cu2O/reduced graphene oxide/In2O3 (Cu2O/RGO/In2O3) hybrid with abundant oxygen vacancies was prepared by a facile, surfactant-free method. The hybrid photocatalyst exhibits an increased photocatalytic activity in water oxidation and degradation of environmental pollutants (methylene blue and Cr6+ solutions) compared with pure In2O3 and Cu2O materials. The presence of oxygen vacancies in Cu2O/RGO/In2O3 and the formation of heterojunction between In2O3 and Cu2O induce extra diffusive electronic states above the valence band (VB) edge and reduce the band gap of the hybrid consequently. Besides, the increased activity of Cu2O/RGO/In2O3 hybrid is also attributed to the alignment of band edge, a process that is assisted by different Fermi levels between In2O3 and Cu2O, as well as the charge transfer and distribution onto the graphene sheets, which causes the downshift of VB of In2O3 and the significant increase in its oxidation potential. Additionally, a built-in electric field is generated on the interface of n-type In2O3 and p-type Cu2O, suppressing the recombination of photoinduced electron-hole pairs and allowing the photogenerated electrons and holes to participate in the reduction and oxidation reactions for oxidizing water molecules and pollutants more efficiently.
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Affiliation(s)
- Jie Liu
- Department of Environmental Science & Engineering, North China Electric Power University , Baoding 071003, China
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Jun Ke
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Degang Li
- School of Chemical Engineering, Shandong University of Technology , Zibo 255049, China
| | - Hongqi Sun
- School of Engineering, Edith Cowan University , 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia
| | - Ping Liang
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Xiaoguang Duan
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Wenjie Tian
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Moses O Tadé
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Shaomin Liu
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Shaobin Wang
- Department of Chemical Engineering, Curtin University , GPO Box U1987, Perth, Western Australia 6845, Australia
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30
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Khan MA, Sinatra L, Oufi M, Bakr OM, Idriss H. Evidence of Plasmonic Induced Photocatalytic Hydrogen Production on Pd/TiO2 Upon Deposition on Thin Films of Gold. Catal Letters 2017. [DOI: 10.1007/s10562-017-1998-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Priebe JB, Radnik J, Kreyenschulte C, Lennox AJJ, Junge H, Beller M, Brückner A. H2Generation with (Mixed) Plasmonic Cu/Au-TiO2Photocatalysts: Structure-Reactivity Relationships Assessed by in situ Spectroscopy. ChemCatChem 2017. [DOI: 10.1002/cctc.201601361] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jacqueline B. Priebe
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Jörg Radnik
- Federal Institute for Materials Research (BAM); Unter den Eichen 44-46 12203 Berlin Germany
| | - Carsten Kreyenschulte
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Alastair J. J. Lennox
- Department of Chemistry; University of Wisconsin Madison; 1101 University Ave Madison WI 53706 USA
| | - Henrik Junge
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Angelika Brückner
- Leibniz Institute for Catalysis at the University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
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32
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Majeed I, Nadeem MA, Badshah A, Kanodarwala FK, Ali H, Khan MA, Stride JA, Nadeem MA. Titania supported MOF-199 derived Cu–Cu2O nanoparticles: highly efficient non-noble metal photocatalysts for hydrogen production from alcohol–water mixtures. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02328b] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water splitting over Cu–Cu2O/TiO2 photocatalysts.
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Affiliation(s)
- Imran Majeed
- Catalysis and Nanomaterials Lab 27
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320
- Pakistan
| | | | - Amin Badshah
- Catalysis and Nanomaterials Lab 27
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320
- Pakistan
| | | | - Hassan Ali
- Catalysis and Nanomaterials Lab 27
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320
- Pakistan
| | - M. Abdullah Khan
- U.S.–Pakistan Center for Advanced Studies in Energy
- NUST
- Islamabad
- Pakistan
| | | | - Muhammad Arif Nadeem
- Catalysis and Nanomaterials Lab 27
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad 45320
- Pakistan
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33
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LaGrow AP, Ward MR, Lloyd DC, Gai PL, Boyes ED. Visualizing the Cu/Cu2O Interface Transition in Nanoparticles with Environmental Scanning Transmission Electron Microscopy. J Am Chem Soc 2016; 139:179-185. [DOI: 10.1021/jacs.6b08842] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Alec P. LaGrow
- The
York Nanocentre and Departments of ‡Physics, ∥Chemistry, and §Electronics, University of York, York YO10 5DD, U.K
| | - Michael R. Ward
- The
York Nanocentre and Departments of ‡Physics, ∥Chemistry, and §Electronics, University of York, York YO10 5DD, U.K
| | - David C. Lloyd
- The
York Nanocentre and Departments of ‡Physics, ∥Chemistry, and §Electronics, University of York, York YO10 5DD, U.K
| | - Pratibha L. Gai
- The
York Nanocentre and Departments of ‡Physics, ∥Chemistry, and §Electronics, University of York, York YO10 5DD, U.K
| | - Edward D. Boyes
- The
York Nanocentre and Departments of ‡Physics, ∥Chemistry, and §Electronics, University of York, York YO10 5DD, U.K
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34
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Majeed I, Nadeem MA, Hussain E, Waterhouse GIN, Badshah A, Iqbal A, Nadeem MA, Idriss H. On the Synergism between Cu and Ni for Photocatalytic Hydrogen Production and their Potential as Substitutes of Noble Metals. ChemCatChem 2016. [DOI: 10.1002/cctc.201600697] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Imran Majeed
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | | | - Ejaz Hussain
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | | | - Amin Badshah
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Azhar Iqbal
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Muhammad Arif Nadeem
- Catalysis and Nanomaterials Lab 27; Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Hicham Idriss
- SABIC-Corporate Research and Development (CRD) at; KAUST; Thuwal 23955 Saudi Arabia
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35
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Yin W, Bai L, Zhu Y, Zhong S, Zhao L, Li Z, Bai S. Embedding Metal in the Interface of a p-n Heterojunction with a Stack Design for Superior Z-Scheme Photocatalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23133-42. [PMID: 27538462 DOI: 10.1021/acsami.6b07754] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The construction of a p-n heterojunction is an efficient strategy to resolve the limited light absorption and serious charge-carrier recombination in semiconductors and enhance the photocatalytic activity. However, the promotion effect is greatly limited by poor interfacial charge transfer efficiency as well as reduced redox ability of charge carriers. In this work, we demonstrate that the embedding of metal Pd into the interface between n-type C3N4 and p-type Cu2O can further enhance the interfacial charge transfer and increase the redox ability of charge carriers through the design of the C3N4-Pd-Cu2O stack nanostructure. The embedded Pd nanocubes in the stack structure not only trap the charge carriers from the semiconductors in promoting the electron-hole separation but also act as a Z-scheme "bridge" in keeping the strong reduction/oxidation ability of the electrons/holes for surface reactions. Furthermore, Pd nanocubes also increase the bonding strength between the two semiconductors. Enabled by this unique design, the hydrogen evolution achieved is dramatically higher than that of its counterpart C3N4-Cu2O structure without Pd embedding. The apparent quantum efficiency (AQE) is 0.9% at 420 nm for the designed C3N4-Pd-Cu2O. This work highlights the rational interfacial design of heterojunctions for enhanced photocatalytic performance.
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Affiliation(s)
- Wenjie Yin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Lijie Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Yuzhen Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Shuxian Zhong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Leihong Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Zhengquan Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
| | - Song Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Institute of Physical and Chemistry, Zhejiang Normal University , Jinhua, Zhejiang 321004, P. R. China
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36
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Photocatalytic Reduction of CO2 with Water into Methanol and Ethanol Using Graphene Derivative–TiO2 Composites: Effect of pH and Copper(I) Oxide. Top Catal 2016. [DOI: 10.1007/s11244-016-0655-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Feng H, Li Y, Luo D, Tan G, Jiang J, Yuan H, Peng S, Qian D. Novel visible-light-responding InVO4-Cu2O-TiO2 ternary nanoheterostructure: Preparation and photocatalytic characteristics. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61105-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Khan M, Al-Oufi M, Tossef A, Al-Salik Y, Idriss H. On the role of CoO in CoOx/TiO2for the photocatalytic hydrogen production from water in the presence of glycerol. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/2055074x.2015.1124191] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Xu X, Gao Z, Cui Z, Liang Y, Li Z, Zhu S, Yang X, Ma J. Synthesis of Cu2O Octadecahedron/TiO2 Quantum Dot Heterojunctions with High Visible Light Photocatalytic Activity and High Stability. ACS APPLIED MATERIALS & INTERFACES 2016; 8:91-101. [PMID: 26651845 DOI: 10.1021/acsami.5b06536] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Since p-n heterojunction photocatalysts with higher energy facets exposed usually possess greatly enhanced photocatalytic activities than single-phase catalysts, a novel Cu2O octadecahedron/TiO2 quantum dot (Cu2O-O/TiO2-QD) p-n heterojunctions composite was designed and synthesized in this study. Cu2O octadecahedra (Cu2O-O) with {110} facets and {100} facets exposed were synthesized first, then highly dispersed TiO2 quantum dots (TiO2-QDs) were loaded on Cu2O-O by the precipitation of TiO2-QDs sol in the presence of absolute ethanol. The morphology, crystal structure, chemical composition, optical properties, photocatalytic activity, and stability of Cu2O-O/TiO2-QD heterojunctions were characterized and investigated. It was found that TiO2-QDs were firmly anchored on Cu2O-O single crystals with good dispersibility. The Cu2O-O/TiO2-QD heterojunctions with partial coverage of TiO2-QDs showed a strong absorbance of visible light and exhibited an effective transfer of photoexcited electrons. The degradation of methyl orange (MO) under visible light irradiation indicated that the photocatalytic activity of Cu2O-O/TiO2-QD heterojunctions was significantly enhanced compared with that of Cu2O-O. This Cu2O-O/TiO2-QD heterojunctions composite exhibited high stability in MO degradation process and after storage in air. The high visible light photocatalytic activity and good stability were attributed to high utilization of light, effective separation of photoexcited electron-hole pairs, and instant scavenging of holes in the unique heterojunction structure.
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Affiliation(s)
- Xu Xu
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Zhonghui Gao
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Zhenduo Cui
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Yanqin Liang
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
- Tianjin Key Laboratory of Composite and Functional Materials , Tianjin 300072, China
| | - Zhaoyang Li
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
- Tianjin Key Laboratory of Composite and Functional Materials , Tianjin 300072, China
| | - Shengli Zhu
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
- Tianjin Key Laboratory of Composite and Functional Materials , Tianjin 300072, China
| | - Xianjin Yang
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, China
- Tianjin Key Laboratory of Composite and Functional Materials , Tianjin 300072, China
| | - Jianmin Ma
- Key Laboratory for Micro-/Nano-Optoelectronic Devices of the Ministry of Education, School of Physics and Electronics, Hunan University , Changsha 410082, China
- Institute for Superconducting and Electronic Materials, University of Wollongong , Wollongong, New South Wales 2522, Australia
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40
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Li J, Yuan H, Zhu Z. Photoelectrochemical performance of g-C3N4/Au/BiPO4Z-scheme composites to improve the mineralization property under solar light. RSC Adv 2016. [DOI: 10.1039/c6ra13570f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
g-C3N4/Au/BiPO4as a hierarchical Z-scheme system was prepared through three steps at different reaction temperatures, using thiourea as a precursor to synthesize g-C3N4.
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Affiliation(s)
- Junqi Li
- School of Materials Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- PR China
| | - Huan Yuan
- School of Materials Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- PR China
| | - Zhenfeng Zhu
- School of Materials Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- PR China
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41
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Tamiolakis I, Papadas IT, Spyridopoulos KC, Armatas GS. Mesoporous assembled structures of Cu2O and TiO2nanoparticles for highly efficient photocatalytic hydrogen generation from water. RSC Adv 2016. [DOI: 10.1039/c6ra08546f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mesoporous assemblies of Cu2O/TiO2nanoparticle heterojunctions, which have a large internal surface area and narrow-sized pores, show highly efficient and robust photocatalytic hydrogen evolution from water using UV-visible light.
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Affiliation(s)
- I. Tamiolakis
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - I. T. Papadas
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - K. C. Spyridopoulos
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - G. S. Armatas
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
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42
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Li J, Yuan H, Zhu Z. Fabrication of Cu2O/Au/BiPO4 Z-scheme photocatalyst to improve the photocatalytic activity under solar light. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.09.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Li B, Hao Y, Shao X, Tang H, Wang T, Zhu J, Yan S. Synthesis of hierarchically porous metal oxides and Au/TiO2 nanohybrids for photodegradation of organic dye and catalytic reduction of 4-nitrophenol. J Catal 2015. [DOI: 10.1016/j.jcat.2015.05.015] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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44
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Yuan G, Lu M, Fei J, Guo J, Wang Z. Morphologically controllable synthesis of core–shell structured Au@Cu2O with enhanced photocatalytic activity. RSC Adv 2015. [DOI: 10.1039/c5ra10845d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Core–shell structured Au@Cu2O nanocomposites with different morphologies were prepared by a facile solution route.
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Affiliation(s)
- Guotao Yuan
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Mengna Lu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Jiuhui Fei
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Jun Guo
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Zuoshan Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
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45
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Wang G, Sun H, Ding L, Zhou G, Wang ZS. Growth of Cu particles on a Cu2O truncated octahedron: tuning of the Cu content for efficient glucose sensing. Phys Chem Chem Phys 2015; 17:24361-9. [DOI: 10.1039/c5cp03748d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and versatile hydrothermal method is developed to synthesize Cu–Cu2O, in which Cu particles grow on the surface of a Cu2O truncated octahedron.
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Affiliation(s)
- Gang Wang
- Department of Chemistry
- Laboratory of Advanced Materials
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Fudan University
- Shanghai 200438
| | - Hong Sun
- Department of Chemistry
- Laboratory of Advanced Materials
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Fudan University
- Shanghai 200438
| | - Lu Ding
- Department of Chemistry
- Laboratory of Advanced Materials
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Fudan University
- Shanghai 200438
| | - Gang Zhou
- Department of Chemistry
- Laboratory of Advanced Materials
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Fudan University
- Shanghai 200438
| | - Zhong-Sheng Wang
- Department of Chemistry
- Laboratory of Advanced Materials
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Fudan University
- Shanghai 200438
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