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Shao B, Meng L, Chen F, Wang J, Zhai W, Li L. Ultrasound Induces Local Disorder of FeOOH on CdIn 2S 4 Photoanode for High Efficiency Photoelectrochemical Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401143. [PMID: 38534196 DOI: 10.1002/smll.202401143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/09/2024] [Indexed: 03/28/2024]
Abstract
The regulation of the crystal structure of oxygen evolution cocatalyst (OEC) is a promising strategy for enhancing the photoelectrochemical efficiency of photoanodes. However, the prevailing regulating approach typically requires a multistep procedure, presenting a significant challenge for maintaining the structural integrity and performance of the photoanode. Herein, FeOOH with a local disordered structure is directly grown on a CdIn2S4 (CIS) photoanode via a simple and mild sonochemical approach. By modulating the localized supersaturation of Ni ions, ultrasonic cavitation induces Ni ions to participate in the nucleation and growth of FeOOH clusters to cause local disorder of FeOOH. Consequently, the local disordered FeOOH facilitates the exposure of additional active sites, boosting OER kinetics and extending charge carrier lifetimes. Finally, the optimal photoanode reaches 4.52 mA cm-2 at 1.23 VRHE, and the onset potential shifts negatively by 330 mV, exhibiting excellent performance compared with that of other metal sulfide-based photoelectrodes reported thus far. This work provides a mild and controllable sonochemical method for regulating the phase structure of OECs to construct high-performance photoanodes.
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Affiliation(s)
- Bo Shao
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Linxing Meng
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
- Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Fang Chen
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jianyuan Wang
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wei Zhai
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Liang Li
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
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Yang D, Li X, Li X, Chen J, Zhang T, Lian T, Wang H. Design and synthesis of nano-iron oxyhydroxide-based molecularly imprinted electrochemical sensors for trace-level carbendazim detection in actual samples. Mikrochim Acta 2024; 191:163. [PMID: 38413431 DOI: 10.1007/s00604-024-06236-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/24/2024] [Indexed: 02/29/2024]
Abstract
Carbendazim (CBD) is widely used as a fungicide that acts as a pesticide in farming to prevent crop diseases. However, CBD can remain on crops for a long time. When consumed by humans and animals, it produces a range of toxic symptoms and poses a serious threat to their health. Therefore, the detection of CBD is necessary. Traditional assay strategies for CBD detection, although sensitive and practical, can hardly achieve fast, robust monitoring during food processing and daily life. Here, we designed a novel electrochemical sensor for CBD detection. In this method, iron oxyhydroxide nanomaterial (β-FeOOH) was first prepared by hydrothermal method. Then, a molecularly imprinted polymer (MIP) layer was electropolymerized on the surface using CBD as the template and resorcinol (RC) as the functional monomer. The synergistic interaction between β-FeOOH and MIP endows the MIP/β-FeOOH/CC-based electrochemical sensor with high specificity and sensitivity. Under optimal conditions, the MIP/β-FeOOH/CC-based sensor showed a wide linear range of 39 pM-80 nM for CBD and a detection limit as low as 25 pM. Therefore, the as-prepared sensor can be a practical and effective tool for pesticide residue detection.
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Affiliation(s)
- Dong Yang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China.
| | - Xuhua Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Xiangyu Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Jifan Chen
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Ting Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Ting Lian
- School of Clinical Medicine, Xi'an Medical University, Xi'an, 710021, China
| | - Haihua Wang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China.
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Ji K, Xia S, Sang X, Zeid AM, Hussain A, Li J, Xu G. Enhanced Luminol Chemiluminescence with Oxidase-like Properties of FeOOH Nanorods for the Sensitive Detection of Uric Acid. Anal Chem 2023; 95:3267-3273. [PMID: 36722089 DOI: 10.1021/acs.analchem.2c04247] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
FeOOH nanorods, as one-dimensional nanomaterials, have been widely used in many fields due to their stable properties, low cost, and easy synthesis, but their application in the field of chemiluminescence (CL) is rarely reported. In this work, FeOOH nanorods were synthesized by a simple and environmentally friendly one-pot hydrothermal method and used for the first time as a catalyst for generating strong CL with luminol without additional oxidant. Remarkably, luminol-FeOOH exhibits about 250 times stronger CL than the luminol-H2O2 system. Its CL intensity was significantly quenched by uric acid. We established a simple, rapid, sensitive, and selective CL method for the detection of uric acid with a linear range of 20-1000 nM and a detection limit of 6.3 nM (S/N = 3). In addition, we successfully applied this method to the detection of uric acid in human serum, and the standard recoveries were 95.6-106.4%.
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Affiliation(s)
- Kaixiang Ji
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.,State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Shiyu Xia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei 230026, China
| | - Xueqing Sang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.,State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Abdallah M Zeid
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Altaf Hussain
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei 230026, China
| | - Jianping Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Guobao Xu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.,State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei 230026, China
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Liu B, Liu P, Deng K, Chen Y, Lv X, Wang C, Tian W, Tan S, Ji J. In Situ Transformation of Hierarchical FeOOH/CuO Arrays with Electro-Cleaning Capability for Oil-in-Water Emulsion Separation and Electro-Fenton Degradation of Organic Dye. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Qi C, Liu Q, Dong Y, Zhang G, Jiang X, Gao D. Fe 3+ in a tetrahedral position determined the electrocatalytic properties in FeMn 2O 4. RSC Adv 2022; 12:27206-27211. [PMID: 36276028 PMCID: PMC9510904 DOI: 10.1039/d2ra04552d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/09/2022] [Indexed: 11/21/2022] Open
Abstract
As an electrocatalyst for the oxygen evolution reaction (OER) for water decomposition purposes, spinel ferrite materials have gained a lot of attention from many researchers. Herein, we document a co-precipitation synthesis of antitypical spinel nanoparticles (FeMn2O4) by post-annealing at different temperatures to enable modulation of the cationic oxidation state and tuning of the conversion degree for efficient and good OER performance. The electrocatalytic activity test shows that the sample annealed at 500 °C has the most optimal catalytic activity with an overpotential of 360 mV at a current density of 10 mA cm−2 and a Tafel slope as low as 105.32 mV dec−1. The formation of FeOOH during in situ OER promotes the catalytic activity of the catalysts. More importantly, according to the results of Brunauer–Emmett–Teller normalization, we demonstrate that the activity of the catalyst is also inseparable from the internal crystal structure. This work broadens the field of research on the electrocatalysis of spinel manganese ferrites. Inspired by the flexibility of cation exchange and valence state variation in spinel ferrite, a high activity OER catalyst FeMn2O4 has been observed without inducing the change of composition, morphology, and atomic doping.![]()
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Affiliation(s)
- Caiyun Qi
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qun Liu
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yucan Dong
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Guoqiang Zhang
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xingdong Jiang
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Daqiang Gao
- Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China
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New trends in the electrochemical detection of endocrine disruptors in complex media. Anal Bioanal Chem 2020; 412:5913-5923. [PMID: 32172326 DOI: 10.1007/s00216-020-02516-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/03/2020] [Accepted: 02/12/2020] [Indexed: 12/24/2022]
Abstract
Endocrine disruptors (EDCs) are substances existing in the environment which affect animal and human endocrine functions and cause diseases. A small quantity of EDCs can have a serious impact on the body. Currently, enzyme-linked immunosorbent assay (ELISA), high-performance liquid chromatography (HPLC), and other traditional methods are used to detect EDCs. Although their sensitivity and reliability are good, these methods are complex, expensive, and not feasible to use in the field. Electrochemical techniques present good potential for the detection of EDCs owing to their low cost, simple, and wearable instrumentation. This paper presents the new trends in this field over the last 3 years. Some simple materials can allow some EDCs to be directly detected. New designs of biosensors, such as aptasensors, allow a femtomolar limit of detection to be reached. Many types of nanomaterial-based sensors were tested; carbonaceous nanomaterials, such as multiwalled carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO), associated or not with other types of nanoparticles were included in numerous designs. Molecularly imprinted polymer (MIP)-based sensors constitute an emerging field. All the presented electrochemical sensors were successfully tested for the detection of EDCs in different types of real samples.
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Cathodic electrodeposited Cu-BTC MOFs assembled from Cu(II) and trimesic acid for electrochemical determination of bisphenol A. Mikrochim Acta 2020; 187:145. [DOI: 10.1007/s00604-020-4124-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/12/2020] [Indexed: 12/17/2022]
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8
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Li C, Zhang Y, Li C, Wan Q, Ke Q, Yang N. Tailoring the CeO 2 morphology and its electrochemical reactivity for highly sensitive and selective determination of dopamine and epinephrine. Mikrochim Acta 2020; 187:143. [PMID: 31965337 DOI: 10.1007/s00604-019-4100-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/27/2019] [Indexed: 11/24/2022]
Abstract
Four CeO2 nanomaterials with the morphologies of a nanoplate (CeO2-p), a nanocube (CeO2-c), a porous triangular microplate (CeO2-t), and of a porous hierarchical rod-stacked nanobundle (CeO2-b) were synthesized using a hydrothermal method. They were characterized by scanning and transmission electron microscopies, X-ray diffraction and X-ray photoelectron spectroscopy. Electrochemical characterizations reveal the tuning of their morphology and the presence of exposed crystal planes of CeO2 that can be realized by changing the alkali sources. Among these materials, the CeO2-b features the largest specific surface and lowest electron transfer resistance towards the redox probe Fe(CN)63-/4-. The best voltammetric response to dopamine and epinephrine is thus achieved by using the Nafion-CeO2-b coated electrode. A sensitive and selective method was developed that can voltammetrically detect dopamine (with a peak near 0.13 V vs. SCE), and epinephrine (with a peak near 0.25 V vs. SCE). The detection limits are 2.9 and 0.67 nM, respectively. Graphical abstractSchematic representation of morphology tailoring of CeO2 and electrochemical sensing of dopamine and epinephrine on these CeO2 samples with different morphologies.
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Affiliation(s)
- Chi Li
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China
| | - Yuanyuan Zhang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China.
| | - Chunya Li
- Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Qijin Wan
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China
| | - Qiang Ke
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China
| | - Nianjun Yang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China.,Institute of Materials Engineering, University of Siegen, 57076, Siegen, Germany
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Zhang Y, Wan Q, Yang N. Recent Advances of Porous Graphene: Synthesis, Functionalization, and Electrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903780. [PMID: 31663294 DOI: 10.1002/smll.201903780] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/10/2019] [Indexed: 06/10/2023]
Abstract
Graphene is a 2D sheet of sp2 bonded carbon atoms and tends to aggregate together, due to the strong π-π stacking and van der Waals attraction between different layers. Its unique properties such as a high specific surface area and a fast mass transport rate are severely blocked. To address these issues, various kinds of 2D holey graphene and 3D porous graphene are either self-assembled from graphene layers or fabricated using graphene related materials such as graphene oxide and reduced graphene oxide. Porous graphene not only possesses unique pore structures, but also introduces abundant exposed edges and accelerates mass transfer. The properties and applications of these porous graphenes and their composites/hybrids have been extensively studied in recent years. Herein, recent progress and achievements in synthesis and functionalization of various 2D holey graphene and 3D porous graphene are reviewed. Of special interest, electrochemical applications of porous graphene and its hybrids in the fields of electrochemical sensing, electrocatalysis, and electrochemical energy storage, are highlighted. As the closing remarks, the challenges and opportunities for the future research of porous graphene and its composites are discussed and outlined.
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Affiliation(s)
- Yuanyuan Zhang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China
| | - Qijin Wan
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China
| | - Nianjun Yang
- School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430073, China
- Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
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Kang N, Ji L, Zhao J, Zhou X, Weng X, Li H, Zhang X, Yang F. Uniform growth of Fe3O4 nanocubes on the single-walled carbon nanotubes as an electrosensor of organic dyes and the study on its catalytic mechanism. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Wang T, Jiang Z, Chu KH, Wu D, Wang B, Sun H, Yip HY, An T, Zhao H, Wong PK. X-Shaped α-FeOOH with Enhanced Charge Separation for Visible-Light-Driven Photocatalytic Overall Water Splitting. CHEMSUSCHEM 2018; 11:1365-1373. [PMID: 29380540 DOI: 10.1002/cssc.201800059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 06/07/2023]
Abstract
Photocatalytic overall water splitting (POWS) is a promising route for converting solar energy into green and sustainable energy. Herein, we report a facile hydrothermal approach for the fabrication of x-shaped α-FeOOH photocatalysts containing high-index facets for POWS. The x-shaped α-FeOOH photocatalysts exhibited enhanced visible-light-driven POWS activities in comparison with that of FeOOH without x-structures, with a maximum H2 and O2 evolution rate of 9.2 and 4.7 μmol h-1 g-1 , respectively. The morphology and particle size of the α-FeOOH could be controlled by adjusting the NH4 F concentration in the precursors. The photodeposition of Pt and RuO2 on the x-shaped α-FeOOH revealed the specially separated reduction and oxidation centers on the surface of α-FeOOH, with the oxidation-active sites selectively located on the edges of the α-FeOOH x-structures. Electrochemical experiments further affirmed the enhanced charge separation in the x-shaped α-FeOOH. The smaller particle size and unique x-shape of the α-FeOOH photocatalyst were shown to enhance the POWS performance owing to the large specific surface area, high proportion of exposed high-index facets, high electron-transfer efficiency and effective separation of the photogenerated electron-hole pairs. The current study revealed that the x-shaped α-FeOOH products could serve as cost-effective and stable photocatalysts for POWS.
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Affiliation(s)
- Tianqi Wang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Zhifeng Jiang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P.R. China
| | - Ka Him Chu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Dan Wu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Bo Wang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Hongli Sun
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Ho Yin Yip
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
| | - Taicheng An
- Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, Guangdong, P.R. China
| | - Huijun Zhao
- Centre for Clean Environment and Energy, Griffith Scholl of Environment, Griffith University, Queensland, 4222, Australia
- Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, Anhui, P.R. China
| | - Po Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, P.R. China
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Sklute EC, Kashyap S, Dyar MD, Holden JF, Tague T, Wang P, Jaret SJ. Spectral and morphological characteristics of synthetic nanophase iron (oxyhydr)oxides. PHYSICS AND CHEMISTRY OF MINERALS 2018; 45:1-26. [PMID: 30135614 PMCID: PMC6101973 DOI: 10.1007/s00269-017-0897-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Nanophase iron (oxyhydr)oxides are ubiquitous on Earth, globally distributed on Mars, and likely present on numerous other rocky solar system bodies. They are often structurally and, therefore, spectrally distinct from iron (oxyhydr)oxide bulk phases. Because their spectra vary with grain size, they can be difficult to identify or distinguish unless multiple analysis techniques are used in tandem. Yet, most literature reports fail to use multiple techniques or adequately parameterize sample morphology, making it difficult to understand how morphology affects spectral characteristics across techniques. Here, we present transmission electron microscopy, Raman, visible and near-infrared, and mid-infrared attenuated total reflectance data on synthetic, nanophase akaganéite, lepidocrocite, goethite, hematite, ferrihydrite, magnetite, and maghemite. Feature positions are tabulated and compared to those for bulk (oxyhydr)oxides and other nanophase iron (oxyhydr)oxides from the literature. The utility and limitations of each technique in analyzing nanophase iron (oxyhydr)oxides are discussed. Raman, mid-infrared, and visible near-infrared spectra show broadening, loss of some spectral features, and shifted positions compared to bulk phases. Raman and mid-infrared spectroscopies are useful in identifying and distinguishing akaganéite, lepidocrocite, goethite, and hematite, though ferrihydrite, magnetite, and maghemite have overlapped band positions. Visible near-infrared spectroscopy can identify and distinguish among ferrihydrite, magnetite, and maghemite in pure spectra, though akaganéite, lepidocrocite, and goethite can have overlapping bands. It is clear from this work that further understanding of variable spectral features in nanophase iron (oxyhydr)oxides must await additional studies to robustly assess effects of morphology. This study establishes a template for future work.
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Affiliation(s)
- Elizabeth C. Sklute
- Department of Astronomy, Mount Holyoke College, 50 College St., South Hadley, MA 01075, USA
| | - Srishti Kashyap
- Department of Microbiology, University of Massachusetts, N418 Morrill Science Center IV North, 639 N. Pleasant St., Amherst, MA 01003, USA
| | - M. Darby Dyar
- Department of Astronomy, Mount Holyoke College, 50 College St., South Hadley, MA 01075, USA
- Planetary Science Institute, 1700 East Fort Lowell, Suite 106, Tucson, AZ 85719-2395, USA
| | - James F. Holden
- Department of Microbiology, University of Massachusetts, N418 Morrill Science Center IV North, 639 N. Pleasant St., Amherst, MA 01003, USA
| | - Thomas Tague
- Bruker Optics Inc., 19 Fortune Dr., Billerica, MA 01821, USA
| | - Peng Wang
- Bruker Optics Inc., 19 Fortune Dr., Billerica, MA 01821, USA
| | - Steven J. Jaret
- Department of Geoscience, Stony Brook University, 255 Earth and Space Science Building, Stony Brook, NY 11794-2100, USA
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