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Khasim S, Almutairi HM, Eid Albalawi S, Salem Alanazi A, Alshamrani OA, Pasha A, Darwish AAA, Hamdalla TA, Panneerselvam C, Al-Ghamdi SA. Graphitic Carbon Nitride Decorated with Iron Oxide Nanoparticles as a Novel High-Performance Biomimetic Electrochemical Sensing Platform for Paracetamol Detection. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02334-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Naikoo GA, Salim H, Hassan IU, Awan T, Arshad F, Pedram MZ, Ahmed W, Qurashi A. Recent Advances in Non-Enzymatic Glucose Sensors Based on Metal and Metal Oxide Nanostructures for Diabetes Management- A Review. Front Chem 2021; 9:748957. [PMID: 34631670 PMCID: PMC8493127 DOI: 10.3389/fchem.2021.748957] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/09/2021] [Indexed: 01/23/2023] Open
Abstract
There is an undeniable growing number of diabetes cases worldwide that have received widespread global attention by many pharmaceutical and clinical industries to develop better functioning glucose sensing devices. This has called for an unprecedented demand to develop highly efficient, stable, selective, and sensitive non-enzymatic glucose sensors (NEGS). Interestingly, many novel materials have shown the promising potential of directly detecting glucose in the blood and fluids. This review exclusively encompasses the electrochemical detection of glucose and its mechanism based on various metal-based materials such as cobalt (Co), nickel (Ni), zinc (Zn), copper (Cu), iron (Fe), manganese (Mn), titanium (Ti), iridium (Ir), and rhodium (Rh). Multiple aspects of these metals and their oxides were explored vis-à-vis their performance in glucose detection. The direct glucose oxidation via metallic redox centres is explained by the chemisorption model and the incipient hydrous oxide/adatom mediator (IHOAM) model. The glucose electrooxidation reactions on the electrode surface were elucidated by equations. Furthermore, it was explored that an effective detection of glucose depends on the aspect ratio, surface morphology, active sites, structures, and catalytic activity of nanomaterials, which plays an indispensable role in designing efficient NEGS. The challenges and possible solutions for advancing NEGS have been summarized.
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Affiliation(s)
- Gowhar A. Naikoo
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | - Hiba Salim
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | | | - Tasbiha Awan
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | - Fareeha Arshad
- Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | - Mona Z. Pedram
- Mechanical Engineering-Energy Division, K. N. Toosi University of Technology, Tehran, Iran
| | - Waqar Ahmed
- School of Mathematics and Physics, College of Science, University of Lincoln, Lincoln, United Kingdom
| | - Ahsanulhaq Qurashi
- Department of Chemistry, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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3
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Dong Q, Ryu H, Lei Y. Metal oxide based non-enzymatic electrochemical sensors for glucose detection. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137744] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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4
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Liu H, Xiong R, Zhong P, Li G, Liu J, Wu J, Liu Y, He Q. Nanohybrids of shuttle-like α-Fe2O3 nanoparticles and nitrogen-doped graphene for simultaneous voltammetric detection of dopamine and uric acid. NEW J CHEM 2020. [DOI: 10.1039/d0nj04629a] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Shuttle-like α-Fe2O3 nanoparticles and nitrogen-doped graphene nanocomposites as a low cost and efficient electrocatalyst for detecting dopamine and uric acid.
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Affiliation(s)
- Hongmi Liu
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Rujie Xiong
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Peng Zhong
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Guangli Li
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Jun Liu
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Jingtao Wu
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Ying Liu
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
| | - Quanguo He
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou
- China
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Cai Z, Ye Y, Wan X, Liu J, Yang S, Xia Y, Li G, He Q. Morphology-Dependent Electrochemical Sensing Properties of Iron Oxide-Graphene Oxide Nanohybrids for Dopamine and Uric Acid. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E835. [PMID: 31159377 PMCID: PMC6631868 DOI: 10.3390/nano9060835] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 12/12/2022]
Abstract
Various morphologies of iron oxide nanoparticles (Fe2O3 NPs), including cubic, thorhombic and discal shapes were synthesized by a facile meta-ion mediated hydrothermal route. To further improve the electrochemical sensing properties, discal Fe2O3 NPs with the highest electrocatalytic activity were coupled with graphene oxide (GO) nanosheets. The surface morphology, microstructures and electrochemical properties of the obtained Fe2O3 NPs and Fe2O3/GO nanohybrids were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. As expected, the electrochemical performances were found to be highly related to morphology. The discal Fe2O3 NPs coupled with GO showed remarkable electrocatalytic activity toward the oxidation of dopamine (DA) and uric acid (UA), due to their excellent synergistic effect. The electrochemical responses of both DA and UA were linear to their concentrations in the ranges of 0.02-10 μM and 10-100 μM, with very low limits of detection (LOD) of 3.2 nM and 2.5 nM for DA and UA, respectively. Moreover, the d-Fe2O3/GO nanohybrids showed good selectivity and reproducibility. The proposed d-Fe2O3/GO/GCE realized the simultaneous detection of DA and UA in human serum and urine samples with satisfactory recoveries.
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Affiliation(s)
- Zhaotian Cai
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yabing Ye
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Xuan Wan
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Jun Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Shihui Yang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yonghui Xia
- Zhuzhou Institute for Food and Drug Control, Zhuzhou 412000, China.
| | - Guangli Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Quanguo He
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
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Spanu D, Dal Santo V, Malara F, Naldoni A, Turolla A, Antonelli M, Dossi C, Marelli M, Altomare M, Schmuki P, Recchia S. Photoelectrocatalytic oxidation of As(III) over hematite photoanodes: A sensible indicator of the presence of highly reactive surface sites. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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7
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Wang Q, Liu S, Fu L, Cao Z, Ye W, Li H, Guo P, Zhao XS. Electrospun γ-Fe 2O 3 nanofibers as bioelectrochemical sensors for simultaneous determination of small biomolecules. Anal Chim Acta 2018; 1026:125-132. [PMID: 29852988 DOI: 10.1016/j.aca.2018.04.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 03/20/2018] [Accepted: 04/02/2018] [Indexed: 12/17/2022]
Abstract
Nanofibers of α-Fe2O3 and γ-Fe2O3 have been obtained after the controlled calcination of precursor nanofibers synthesized by electrospinning. α-Fe2O3 nanofibers showed an irregular toruloid structure due to the decomposition of poly (4-vinyl) pyridine in air while γ-Fe2O3 nanoparticles decorated nanofibers were observed after the calcination under N2 atmosphere. Electrochemical measurements showed that different electrochemical behaviors were observed on the glassy carbon electrodes modified by α-Fe2O3 and γ-Fe2O3 nanofibers. The electrode modified by γ-Fe2O3 nanofibers exhibited high electrocatalytic activities toward oxidation of dopamine, uric acid and ascorbic acid while α-Fe2O3 nanofibers cannot. Furthermore, the γ-Fe2O3 modified electrode can realize the selective detection of biomolecules in ternary electrolyte solutions. The synthesis of nanofibers of α-Fe2O3 and γ-Fe2O3 and their electrochemical sensing properties relationship have been discussed and analyzed based on the experimental results.
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Affiliation(s)
- Qianbin Wang
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Shuibo Liu
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Liyun Fu
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Zhengshuai Cao
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Wanneng Ye
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China.
| | - Hongliang Li
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China.
| | - X S Zhao
- Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao, 266071, PR China
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8
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In-situ synthesis of graphitic carbon nitride/iron oxide−copper composites and their application in the electrochemical detection of glucose. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.01.149] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Ribeiro CDL, Santos JGM, de Souza JR, Pereira-da-Silva MA, Paterno LG. Electrochemical oxidation of salicylic acid at ITO substrates modified with layer-by-layer films of carbon nanotubes and iron oxide nanoparticles. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.09.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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10
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Chen A, Xu L, Zhang X, Yang Z, Yang S. Improving Surface Adsorption via Shape Control of Hematite α-Fe 2O 3 Nanoparticles for Sensitive Dopamine Sensors. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33765-33774. [PMID: 27960401 DOI: 10.1021/acsami.6b11088] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
α-Fe2O3 nanoparticles (NPs) with morphologies varying from shuttle to drum were synthesized through an anion-assisted and surfactant-free hydrothermal method by simply varying the ratios of ethanol and water in solvent. Control experiments show that the structural evolution can be attributed to a small-molecular-induced anisotropic growth mechanism in which the growth rate of α-Fe2O3 NPs along the a-, b-, or c-axis was well-controlled. The detailed structural analysis through the high-resolution transmission electron microscope (HRTEM) indicated that shuttle-like Fe2O3 NP surface was covered by high-density atomic steps, which endowed them with the enhanced adsorption and sensor ability toward dopamine (DA). The XPS characterizations indicated that the percentages of the OC component follow the order of shuttle-like Fe2O3 (S-Fe2O3 for short) > pseudoshuttle-like Fe2O3 (Ps-Fe2O3 for short) > polyhedron-like Fe2O3 (Ph-Fe2O3 for short) > drum-like Fe2O3 (D-Fe2O3 for short). Benefits from these structural advantages, the S-Fe2O3 NPs-Nafion composite electrode exhibited remarkable electrochemical detection ability with a wide liner range from 0.2 μM to 0.107 mM and a low detection limit of 31.25 nM toward DA in the presence of interferents.
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Affiliation(s)
- Anran Chen
- School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, People's Republic of China
| | - Liang Xu
- School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, People's Republic of China
| | - Xiaojing Zhang
- School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, People's Republic of China
| | - Zhimao Yang
- School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, People's Republic of China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Academy of Xi'an Jiaotong University , Suzhou, Jiangsu 215000, People's Republic of China
| | - Shengchun Yang
- School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, People's Republic of China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Academy of Xi'an Jiaotong University , Suzhou, Jiangsu 215000, People's Republic of China
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11
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Chen H, Lyu M, Liu G, Wang L. Abnormal Cathodic Photocurrent Generated on an n-Type FeOOH Nanorod-Array Photoelectrode. Chemistry 2016; 22:4802-8. [PMID: 26879339 DOI: 10.1002/chem.201504512] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Indexed: 11/11/2022]
Abstract
A simple, wet-chemical method for the synthesis of an FeOOH nanorod-array photoelectrode on fluorine-doped tin oxide (FTO) glass is reported. Nanorods of diameter about 35 nm and length about 300 nm have been vertically grown on an FTO substrate. Upon calcination, the FeOOH phase could be easily converted to a hematite structure while maintaining the shape of the nanorod array. An interesting abnormal cathodic photocurrent is generated on the FeOOH nanorod-array photoelectrode under illumination, which is totally different from that obtained on a calcined hematite photoelectrode under the same experimental conditions. The cathodic photocurrent density generated on the FeOOH photoelectrode can also be tuned by applying an electrochemical anodic or cathodic treatment. Detailed analysis has revealed that higher valence state Fe(IV) species in the FeOOH photoelectrode play an important role in sacrificing the photoexcited electrons for generation of the cathodic photocurrent. Comparison between the FeOOH and hematite photoelectrodes allows for a better understanding of the interplay between crystal structure, surface reactions, and photocurrent. The findings on this new abnormal phenomenon could also provide guidance for the design of new types of semiconducting photoelectrochemical devices.
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Affiliation(s)
- Hongjun Chen
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Gang Liu
- Shenyang National Lab for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016, Shenyang (P.R. China.
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia.
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12
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Yuan M, Li J, Yu Y, Fu Y, Fong A, Hu J. Fabrication of a Fe2O3Nanoparticles Implantation-modified Electrode and its Applications in Electrochemical Sensing. ELECTROANAL 2015. [DOI: 10.1002/elan.201500585] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Moir J, Soheilnia N, Liao K, O'Brien P, Tian Y, Burch KS, Ozin GA. Activation of Ultrathin Films of Hematite for Photoelectrochemical Water Splitting via H2 Treatment. CHEMSUSCHEM 2015; 8:1557-1567. [PMID: 25650837 DOI: 10.1002/cssc.201402945] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 11/26/2014] [Indexed: 06/04/2023]
Abstract
Thermal treatment of ultrathin films of hematite (α-Fe2 O3 ) under an atmosphere of 5 % H2 in Ar is presented as a means of activating α-Fe2 O3 towards the photoelectrochemical splitting of water. Spin-coated films annealed in air exhibited no photoactivity, whereas films treated in hydrogen exhibited a photocurrent response. X-ray photoelectron spectroscopy and UV/Vis absorption spectroscopy results showed that the H2 -treated films contain oxygen vacancies, which suggests improved charge transport. However, Tafel slopes, scan-rate dependent measurements, and kinetic analyses performed by using H2 O2 as a hole scavenger suggested that surface modification may also contribute to their induced photoactivity. Electrochemical impedance spectroscopy results revealed the buildup of a surface trap capacitance at the point of photocurrent onset for the hydrogen-treated films under illumination. A decrease in charge trapping resistance was also observed, which suggests improved transport of charges away from the surface.
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Affiliation(s)
- Jonathon Moir
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada)
| | - Navid Soheilnia
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada)
| | - Kristine Liao
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada)
| | - Paul O'Brien
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada)
| | - Yao Tian
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7 (Canada)
| | - Kenneth S Burch
- Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467-3804 (USA)
| | - Geoffrey A Ozin
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada).
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14
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Moir J, Soheilnia N, O'Brien P, Jelle A, Grozea CM, Faulkner D, Helander MG, Ozin GA. Enhanced hematite water electrolysis using a 3D antimony-doped tin oxide electrode. ACS NANO 2013; 7:4261-4274. [PMID: 23581965 DOI: 10.1021/nn400744d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present herein an example of nanocrystalline antimony-doped tin oxide (nc-ATO) disordered macroporous "inverse opal" 3D electrodes as efficient charge-collecting support structures for the electrolysis of water using a hematite surface catalyst. The 3D macroporous structures were created via templating of polystyrene spheres, followed by infiltration of the desired precursor solution and annealing at high temperature. Using cyclic voltammetry and electrochemical impedance spectroscopy, it was determined that the use of this 3D transparent conducting oxide with a hematite surface catalyst allowed for a 7-fold increase in active surface area for water splitting with respect to its 2D planar counterpart. This ratio of surface areas was evaluated based on the presence of oxidized trap states on the hematite surface, as determined from the equivalent circuit analysis of the Nyquist plots. Furthermore, the presence of nc-ATO 2D and 3D "underlayer" structures with hematite deposited on top resulted in decreased charge transfer resistances and an increase in the number of available active surface sites at the semiconductor-liquid junction when compared to hematite films lacking any nc-ATO substructures. Finally, absorption, transmission, and reflectance spectra of all of the tested films were measured, suggesting the feasibility of using 3D disordered structures in photoelectrochemical reactions, due to the high absorption of photons by the surface catalyst material and trapping of light within the structure.
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Affiliation(s)
- Jonathon Moir
- Materials Chemistry and Nanochemistry Research Group, Centre for Inorganic and Polymeric Materials, Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Ontario M5S 3H6, Canada
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15
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Pirzada TJ, MacGregor SA, Ahmed S, Edler KJ, Hamzah HA, Jiang D, Burrows AD, Mitchels JM, Hassan IAI, Halls JE, Marken F. Formation of low density hydrous iron oxide via conformal transformation of MIL-53(Fe). Chem Commun (Camb) 2013; 49:10593-5. [DOI: 10.1039/c3cc46655h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Gajda-Schrantz K, Tymen S, Boudoire F, Toth R, Bora DK, Calvet W, Grätzel M, Constable EC, Braun A. Formation of an electron hole doped film in the α-Fe2O3photoanode upon electrochemical oxidation. Phys Chem Chem Phys 2013; 15:1443-51. [DOI: 10.1039/c2cp42597a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Ferraz LCC, Carvalho WM, Criado D, Souza FL. Vertically oriented iron oxide films produced by hydrothermal process: effect of thermal treatment on the physical chemical properties. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5515-5523. [PMID: 22992121 DOI: 10.1021/am301425e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Our study describes the influence of the thermal treatment on the fundamental properties of the vertical oriented iron oxide nanorods synthesized under hydrothermal condition onto a conductor substrate. X-ray diffraction and X-ray absorption near edge structure spectra were used to investigate the phase evolution from iron oxyhydroxide (β-FeOOH) to pure hematite phase. The formation of nanorods distributed along of substrate was observed by top-view SEM images and the rod growth preferentially oriented at the highly conductive (001) basal plane of hematite, perpendicular to the substrate. Light absorption capacity increases with the temperature of treatment and the electronic transitions (direct and indirect electronic transition) were estimated from this result. From the electrochemical measurement, the hematite/electrolyte interface was evaluated. These findings demonstrated that the temperature plays an important role on the hematite (structural, morphological, and catalytic) properties and that many influences must work in great harmony in order to produce a promising hematite photoanode.
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Affiliation(s)
- Lucas C C Ferraz
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil
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18
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Liu Z, Lv B, Wu D, Sun Y, Xu Y. Preparation and Properties of Octadecahedral α-Fe2O3Nanoparticles Enclosed by {104} and {112} Facets. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200140] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Shimizu K, Lasia A, Boily JF. Electrochemical impedance study of the hematite/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7914-7920. [PMID: 22540260 DOI: 10.1021/la300829c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Reactions taking place on hematite (α-Fe(2)O(3)) surfaces in contact with aqueous solutions are of paramount importance to environmental and technological processes. The electrochemical properties of the hematite/water interface are central to these processes and can be probed by open circuit potentials and cyclic voltammetric measurements of semiconducting electrodes. In this study, electrochemical impedance spectroscopy (EIS) was used to extract resistive and capacitive attributes of this interface on millimeter-sized single-body hematite electrodes. This was carried out by developing equivalent circuit models for impedance data collected on a semiconducting hematite specimen equilibrated in solutions of 0.1 M NaCl and NH(4)Cl at various pH values. These efforts produced distinct sets of capacitance values for the diffuse and compact layers of the interface. Diffuse layer capacitances shift in the pH 3-11 range from 2.32 to 2.50 μF·cm(-2) in NaCl and from 1.43 to 1.99 μF·cm(-2) in NH(4)Cl. Furthermore, these values reach a minimum capacitance at pH 9, near a probable point of zero charge for an undefined hematite surface exposing a variety of (hydr)oxo functional groups. Compact layer capacitances pertain to the transfer of ions (charge carriers) from the diffuse layer to surface hydroxyls and are independent of pH in NaCl, with values of 32.57 ± 0.49 μF·cm(-2)·s(-φ). However, they decrease with pH in NH(4)Cl from 33.77 at pH 3.5 to 21.02 μF·cm(-2)·s(-φ) at pH 10.6 because of the interactions of ammonium species with surface (hydr)oxo groups. Values of φ (0.71-0.73 in NaCl and 0.56-0.67 in NH(4)Cl) denote the nonideal behavior of this capacitor, which is treated here as a constant phase element. Because electrode-based techniques are generally not applicable to the commonly insulating metal (oxyhydr)oxides found in the environment, this study presents opportunities for exploring mineral/water interface chemistry by EIS studies of single-body hematite specimens.
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Affiliation(s)
- Kenichi Shimizu
- Department of Chemistry, Umeå University, Umeå SE-901 87, Sweden
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Xia C, Yanjun X, Ning W. Hollow Fe2O3 polyhedrons: One-pot synthesis and their use as electrochemical material for nitrite sensing. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.10.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Cummings CY, Attard GA, Mitchels JM, Marken F. Surface State Trapping and Mobility Revealed by Junction Electrochemistry of Nano-Cr2O3. Aust J Chem 2012. [DOI: 10.1071/ch11382] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Hydrous chromium oxide nanoparticles (~15 nm diameter) are assembled from a colloidal solution onto tin-doped indium oxide (ITO) substrates by layer-by-layer electrostatic deposition with aqueous carboxymethyl-cellulose sodium salt binder. Calcination produces purely inorganic mesoporous films (average thickness increase per layer of 1 nm) of chromia Cr2O3. When immersed in aqueous carbonate buffer at pH 10 and investigated by cyclic voltammetry, a chemically reversible oxidation is observed because of a conductive layer at the chromia surface (formed during initial potential cycling). This is attributed to a surface CrIII/IV process. At more positive potentials higher oxidation states are accessible before film dissolution. The effects of film thickness and pH on voltammetric responses are studied. X-Ray photoelectron spectroscopy (XPS) evidence for higher chromium oxidation states is obtained. ITO junction experiments are employed to reveal surface conduction by CrIII/IV and CrIV/V ‘mobile surface states’ and an estimate is obtained for the apparent CrIII/IV charge surface diffusion coefficient Dapp = 10–13 m2 s–1. The junction experiment distinguishes mobile surface redox sites from energetically distinct deeper-sitting ‘trapped states’.
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22
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Peter LM, Wijayantha KGU, Tahir AA. Kinetics of light-driven oxygen evolution at α-Fe2O3electrodes. Faraday Discuss 2012; 155:309-22; discussion 349-56. [DOI: 10.1039/c1fd00079a] [Citation(s) in RCA: 240] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Cummings CY, Marken F, Peter LM, Upul Wijayantha KG, Tahir AA. New Insights into Water Splitting at Mesoporous α-Fe2O3 Films: A Study by Modulated Transmittance and Impedance Spectroscopies. J Am Chem Soc 2011; 134:1228-34. [DOI: 10.1021/ja209530s] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charles Y. Cummings
- Department
of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY,
United Kingdom
| | - Frank Marken
- Department
of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY,
United Kingdom
| | - Laurence M. Peter
- Department
of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY,
United Kingdom
| | - K. G. Upul Wijayantha
- Department
of Chemistry, Loughborough University,
Loughborough LE11 3TU,
United Kingdom
| | - Asif A. Tahir
- Department
of Chemistry, Loughborough University,
Loughborough LE11 3TU,
United Kingdom
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24
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Cao X, Wang N. A novel non-enzymatic glucose sensor modified with Fe2O3 nanowire arrays. Analyst 2011; 136:4241-6. [PMID: 21874198 DOI: 10.1039/c1an15367f] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fe(2)O(3) was generally considered to be biologically and electrochemically inert, and its electrocatalytic functionality has been rarely realized directly in the past. In this work, Fe(2)O(3) nanowire arrays were synthesized and electrochemically characterized. The as prepared Fe(2)O(3) nanomaterial was proved to be an ideal electrode material due to the intrinsic peroxidase-like catalytic activity. The Fe(2)O(3) nanowire array modified glucose sensor exhibited excellent biocatalytic performance towards the oxidation of glucose with a response time of <6 s, a linear range between 0.015-8 mM, and sensitivity of 726.9 μA mM(-1)cm(-1). Additionally, a high sensing selectivity towards glucose oxidation in the presence of ascorbic acid (AA) and dopamine (DA) has also been obtained at their maximum physiological concentrations, which makes the Fe(2)O(3) nanomaterial promising for the development of effective electrochemical sensors for practical applications.
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Affiliation(s)
- Xia Cao
- School of Biochemical and Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, China
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25
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Smoláková L, Grygar T, Čapek L, Schneeweiss O, Zbořil R. Speciation of Fe in Fe-modified zeolite catalysts. J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.05.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Rezaei B, Damiri S. Electrochemistry and Adsorptive Stripping Voltammetric Determination of Amoxicillin on a Multiwalled Carbon Nanotubes Modified Glassy Carbon Electrode. ELECTROANAL 2009. [DOI: 10.1002/elan.200804571] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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