1
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Xia S, Wu F, Liu Q, Gao W, Guo C, Wei H, Hussain A, Zhang Y, Xu G, Niu W. Steering the Selective Production of Glycolic Acid by Electrocatalytic Oxidation of Ethylene Glycol with Nanoengineered PdBi-Based Heterodimers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400939. [PMID: 38618653 DOI: 10.1002/smll.202400939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/30/2024] [Indexed: 04/16/2024]
Abstract
Heterodimers of metal nanocrystals (NCs) with tailored elemental distribution have emerged as promising candidates in the field of electrocatalysis, owing to their unique structures featuring heterogeneous interfaces with distinct components. Despite this, the rational synthesis of heterodimer NCs with similar elemental composition remains a formidable challenge, and their impact on electrocatalysis has remained largely elusive. In this study, Pd@Bi-PdBi heterodimer NCs are synthesized through an underpotential deposition (UPD)-directed growth pathway. In this pathway, the UPD of Bi promotes a Volmer-Weber growth mode, allowing for judicious modulation of core-satellite to heterodimer structures through careful control of supersaturation and growth kinetics. Significantly, the heterodimer NCs are employed in the electrocatalytic process of ethylene glycol (EG) with high activity and selectivity. Compared with pristine Pd octahedra and common PdBi alloy NC, the unique heterodimer structure of the Pd@Bi-PdBi heterodimer NCs endows them with the highest electrocatalytic performance of EG and the best selectivity (≈93%) in oxidizing EG to glycolic acid (GA). Taken together, this work not only heralds a new strategy for UPD-directed synthesis of bimetallic NCs, but also provides a new design paradigm for steering the selectivity of electrocatalysts.
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Affiliation(s)
- Shiyu Xia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Fengxia Wu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Qixin Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Wenping Gao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Chenxi Guo
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Haili Wei
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Altaf Hussain
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Yue Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Wenxin Niu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
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2
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Thiruppathi KP, Majumder SB. Microwave-Assisted Hydrothermal Synthesis of {100} and {111} Faceted LiFeO 2 Truncated Octahedra: Investigations on Volatile Organic Compound Sensing Performance. Inorg Chem 2024; 63:4545-4556. [PMID: 38394687 DOI: 10.1021/acs.inorgchem.3c03714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Growth of exposed crystal facets has received considerable attention because of their coordinatively unsaturated surface atoms and defect-related surface reactivities. Herein, LiFeO2 truncated octahedra exposed with 6 {100} facets and 8 {111} facets were prepared through a simple microwave-assisted hydrothermal method without using any additives, surfactants, and calcination processes. The detailed growth process revealed that the formation of LiFeO2 truncated octahedra occurred only at the optimized reaction temperature (180 °C), time (30 min), and reactant concentrations. The prepared LiFeO2 truncated octahedra showed excellent sensing responses toward aliphatic organic compounds compared to that against aromatic organic compounds and poor response to inorganic compounds. The response percentages of 150 ppm concentrations of acetone, ethanol, formaldehyde, and isopropyl alcohol are 81.84, 62.91, 62.68, and 69.41%, respectively, at a low operating temperature (100 °C). The presence of exposed facets with their coordinatively unsaturated Li/Fe surface atoms such as 5-fold {100}, 3-fold {111}, 3-fold {100}-{111}, 2-fold {111}-{111}, and 2-fold coordination with the O atom in the vertices facilitated more oxygen vacancies and led to improved surface reactivities as well as sensitivity.
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Affiliation(s)
- K Palani Thiruppathi
- Advanced Materials Synthesis and Processing Laboratory, Materials Science Centre & School of Nanoscience and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Subhasish Basu Majumder
- Advanced Materials Synthesis and Processing Laboratory, Materials Science Centre & School of Nanoscience and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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3
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Cao S, Chen N, Li M, Wei K, Zhan G, Guo F, Gao T, Jia F, Zhang L. Construction of an OCP-ATR-FTIR Spectroscopy Device to In Situ Monitor the Interfacial Reaction of Contaminants: Competitive Adsorption of Cr(VI) and Oxalate on Hematite. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16532-16540. [PMID: 37853668 DOI: 10.1021/acs.est.3c04475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
The comprehensive understanding of contaminant interfacial behavior strongly depends on the in situ characterization technique, which is still a great challenge. In this study, we constructed a device integrated with open-circuit potentialand attenuated total reflectance Fourier transform infrared (OCP-ATR-FTIR) spectroscopy to simultaneously monitor the electrochemical and infrared spectral information on the interfacial reaction for the process analysis, taking the competitive adsorption of hexavalent chromium (Cr(VI)) and oxalate on hematite nanocubes (HNC) as an example. The synchronous OCP and infrared results revealed that Cr(VI) interacted with HNC via bidentate binuclear inner-sphere coordination, accompanied by electron transfer from HNC to Cr(VI), while oxalate was adsorbed on HNC through bidentate mononuclear side-on inner-sphere coordination with electron transfer from HNC to oxalate, and also outer-sphere coordination with negative charge accumulation. When oxalate was added to HNC with preadsorbed Cr(VI), oxalate would occupy the inner-sphere adsorption sites and thus cause the detaching of preadsorbed Cr(VI) from HNC. This study provides a promising in situ characterization technique for real-time interfacial reaction monitoring and also sheds light on the competitive adsorption mechanism of oxalate and Cr(VI) on the mineral surface.
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Affiliation(s)
- Shiyu Cao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Na Chen
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Meiqi Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kai Wei
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Guangming Zhan
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Furong Guo
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Tingjuan Gao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Falong Jia
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Lizhi Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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4
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Zhang J, Liu S, Lv Z, Liu Y, Gao F, Li K, Tan X, Ye X, Fang M. Facet-dependent U(VI) removal of hematite with confined ferrous ions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:109077-109086. [PMID: 37759062 DOI: 10.1007/s11356-023-30044-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023]
Abstract
The presence of ferrous minerals has been demonstrated to have a significant impact on the destiny, migration, and availability of uranyl (U(VI)) in natural surroundings. The iron oxide/Fe(II) system is a multifaceted iron reduction system anchored to surfaces, encompassing various forms of iron and ferrous ions. Several studies have investigated the effectiveness of adsorbed ferrous iron on iron-based minerals to facilitate the reduction of heavy metal ions and radioactive nuclides. A range of techniques for characterization, including X-ray photoelectron spectroscopy (XPS) and Mössbauer spectroscopy, were employed to explore the process of U(VI) adsorption and deposition, focusing on the limited region containing ferrous iron on the exposed crystalline surface of hematite. In this specific investigation, two kinds of hematite nanocrystals primarily exposing {001} and {012} crystal facets, referred to as HNPs and HNCs, were synthesized. Their ability to remove U(VI) was examined. Ferrous ions (Fe(II)) adsorbed onto the surface of hematite nanocrystals significantly enhanced the efficiency of U(VI) remediation. Furthermore, the HNCs/Fe(II) system showed better U(VI) reduction ability than the HNPs/Fe(II) system. Remarkably, HNCs produced and consumed more electrons and hydroxyl radicals, indicating a more intense response. This finding serves to highlight the significance of their role in interfacial effects and in predicting the spatial distribution of U(VI) in aqueous systems.
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Affiliation(s)
- Jing Zhang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Shuya Liu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Zhimin Lv
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Yuxin Liu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Feixue Gao
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Kexin Li
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Province Key Laboratory of Resources and Chemistry of Salt Lakes, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai, 810008, People's Republic of China
| | - Xiaoli Tan
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China.
| | - Xiushen Ye
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Province Key Laboratory of Resources and Chemistry of Salt Lakes, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai, 810008, People's Republic of China
| | - Ming Fang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
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5
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Fang L, Chi J, Shi Q, Wu Y, Li F. Facet-dependent electron transfer induces distinct arsenic reallocations on hematite. WATER RESEARCH 2023; 242:120180. [PMID: 37320876 DOI: 10.1016/j.watres.2023.120180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
The interfacial electron transfer (ET) between electron shuttling compounds and iron (Fe) oxyhydroxides plays a crucial role in the reductive dissolution of Fe minerals and the fate of surface-bound arsenic (As). However, the impact of exposed facets of highly crystalline hematite on reductive dissolution and As immobilization is poorly understood. In this study, we systematically investigated the interfacial processes of the electron shuttling compound cysteine (Cys) on various facets of hematite and the reallocations of surface-bound As(III) or As(V) on the respective surfaces. Our results demonstrate that the ET process between Cys and hematite generates Fe(II) and leads to reductive dissolution, with more Fe(II) generated on {001} facets of exposed hematite nanoplates (HNPs). Reductive dissolution of hematite leads to significantly enhanced As(V) reallocations on hematite. Nevertheless, upon the addition of Cys, a raipd release of As(III) can be halted by its prompt re-adsorption, leaving the extent of As(III) immobilization on hematite unchanged throughout the course of reductive dissolution. This is due to that Fe(II) can form new precipitates with As(V), a process that is facet-dependent and influenced by water chemistry. Electrochemical analysis reveals that HNPs exhibit higher conductivity and ET ability, which is beneficial for reductive dissolution and As reallocations on hematite. These findings highlight the facet-dependent reallocations of As(III) and As(V) facilitated by electron shuttling compounds and have implications for the biogeochemical processes of As in soil and subsurface environments.
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Affiliation(s)
- Liping Fang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Jialin Chi
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Qiantao Shi
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Yundang Wu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Fangbai Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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6
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Rudel HE, Zimmerman JB. Elucidating the Role of Capping Agents in Facet-Dependent Adsorption Performance of Hematite Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2023; 15:34829-34837. [PMID: 37441746 PMCID: PMC10502695 DOI: 10.1021/acsami.3c05104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
Organic capping agents are a ubiquitous and crucial part of preparing reproducible and homogeneous batches of nanomaterials, particularly nanocrystals with well-defined facets. Despite studies reporting surface ligands (e.g., capping agents) having a non-negligible role in catalytic behavior, their impact is less understood in contaminant adsorption, an important consideration given their potential to obfuscate facet-dependent trends in performance. To ascribe observed behaviors to the facet or the ligand, this report evaluates the impact of poly(N-vinyl-2-pyrrolidone) (PVP), a commonly utilized capping agent, on the adsorption performance of nanohematite particles of varying prevailing facet in the removal of selenite (Se(IV)) as a model system. The PVP capping agent reduces the available surface area for contaminant binding, thus resulting in a reduction in overall Se(IV) adsorbed. However, accounting for the effects of surface area, {012}-faceted nanohematite demonstrates a significantly higher sorption capacity for Se(IV) compared with that of {001}-faceted nanohematite. Notably, chemical treatment is minimally effective in removing strongly bound PVP, indicating that complete removal of surface ligands remains challenging.
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Affiliation(s)
- Holly E. Rudel
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511
- Center for Green Chemistry and Green Engineering, Yale University, New Haven, CT 06511
| | - Julie B. Zimmerman
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511
- Center for Green Chemistry and Green Engineering, Yale University, New Haven, CT 06511
- School of the Environment, Yale University, New Haven, CT 06511
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7
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Liu Y, Lei J, Chen Y, Liang C, Ni J. Hierarchical-Structured Fe 2O 3 Anode with Exposed (001) Facet for Enhanced Lithium Storage Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2025. [PMID: 37446541 DOI: 10.3390/nano13132025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/30/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023]
Abstract
The hierarchical structure is an ideal nanostructure for conversion-type anodes with drastic volume expansion. Here, we demonstrate a tin-doping strategy for constructing Fe2O3 brushes, in which nanowires with exposed (001) facets are stacked into the hierarchical structure. Thanks to the tin-doping, the conductivity of the Sn-doped Fe2O3 has been improved greatly. Moreover, the volume changes of the Sn-doped Fe2O3 anodes can be limited to ~4% vertical expansion and ~13% horizontal expansion, thus resulting in high-rate performance and long-life stability due to the exposed (001) facet and the unique hierarchical structure. As a result, it delivers a high reversible lithium storage capacity of 580 mAh/g at a current density of 0.2C (0.2 A/g), and excellent rate performance of above 400 mAh/g even at a high current density of 2C (2 A/g) over 500 cycles, which is much higher than most of the reported transition metal oxide anodes. This doping strategy and the unique hierarchical structures bring inspiration for nanostructure design of functional materials in energy storage.
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Affiliation(s)
- Yanfei Liu
- Longmen Laboratory, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Jianfei Lei
- Longmen Laboratory, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Ying Chen
- Longmen Laboratory, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Chenming Liang
- Longmen Laboratory, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Jing Ni
- School of Chemistry and Material Science, Hubei Engineering University, Xiaogan 432000, China
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8
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Li Y, Yin H, Cai Y, Luo H, Yan C, Dang Z. Regulating the exposed crystal facets of α-Fe 2O 3 to promote Fe 2O 3-modified biochar performance in heavy metals adsorption. CHEMOSPHERE 2023; 311:136976. [PMID: 36288770 DOI: 10.1016/j.chemosphere.2022.136976] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/12/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
α-Fe2O3 modified biochar (Fe2O3/BC) was prepared to remove Cu(II), Pb(II) and As(V). By adjusting the calcination temperature, the morphology and exposed crystal facets of α-Fe2O3 on the biochar were changed which further affected the adsorption performance. The kinetics and isotherms were investigated systematically to reveal adsorption effect of the adsorbent on Cu(II), Pb(II) and As(V). The results indicated that chemisorption process was the dominant adsorption mechanism. Fe2O3/BC-350 exhibited superior adsorption capacity for Cu(II) (258.22 mg/g) and Pb(II) (390.60 mg/g), and Fe2O3/BC-250 showed relatively good adsorption capacity for As(V) (5.78 mg/g). By adsorption mechanism analysis, electrostatic adsorption, ion exchange, precipitation and complexation were coexisted in the process of removing metal ions by Fe2O3/BC. The repeatability test and the effect of ion strength exhibited the strong stability of Fe2O3/BC. Meanwhile, density functional theory (DFT) calculations manifested that the (202) facet of α-Fe2O3 on Fe2O3/BC-350 possessed the lowest adsorption energies of Cu(II) and Pb(II). While for As(V), it was the (104) facet of α-Fe2O3 on Fe2O3/BC-250 that exhibited the lowest adsorption energy. DFT results revealed that different Fe2O3/BC had different adsorption affinities to various heavy metals. In general, this work not only prepared a promising adsorbent via a simple procedure, but also served as a reference for researchers in designing absorbents with specific active facet for efficient heavy metals remediation.
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Affiliation(s)
- Yingchao Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Hua Yin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, China.
| | - Yuhao Cai
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Haoyu Luo
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Caiya Yan
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, China
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9
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Tan W, Liang Y, Xu Y, Wang M. Structural-controlled formation of nano-particle hematite and their removal performance for heavy metal ions: A review. CHEMOSPHERE 2022; 306:135540. [PMID: 35779679 DOI: 10.1016/j.chemosphere.2022.135540] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Hematite is ubiquitous in nature and holds great promise for a wide variety of applications in many frontiers of environmental issues such as heavy metal remediation in environment. Over the past decades, numerous efforts have been made to control and tailor the crystal structures of hematite to improve its adsorption performance for heavy metal ions (HMIs). It is now well established that the adsorption behavior of hematite nanocrystals is strongly affected by their particle sizes, crystal facet contributions, and defective structures. This review examined the size- and facet-dependent hematite, as well as the defective hematite according to their fabrication methods and growth mechanisms. Furthermore, the adsorption performance of various hematite particles for HMIs were introduced and compared to clarify the structure-active relationships of hematite. We also overviewed the advances in charge distribution (CD)-multisite complexation (MUSIC) modeling studies about the HMIs adsorption at the hematite-water interface and the binding parameters. The Present review systematically describes how the formation conditions impact the structural and surface properties of hematite particles, thereby providing new strategies for enhancing the performance of hematite for environmental remediation.
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Affiliation(s)
- Wenfeng Tan
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yu Liang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China; Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Yun Xu
- Soil Chemistry and Chemical Soil Quality Group, Wageningen University, 6708 PB, Wageningen, the Netherlands
| | - Mingxia Wang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
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10
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Elishav O, Stone D, Tsyganok A, Jayanthi S, Ellis DS, Yeshurun T, Maor II, Levi A, Beilin V, Shter GE, Yerushalmi R, Rothschild A, Banin U, Grader GS. Composite Indium Tin Oxide Nanofibers with Embedded Hematite Nanoparticles for Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2022; 14:41851-41860. [PMID: 36094823 PMCID: PMC9501920 DOI: 10.1021/acsami.2c05424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
Hematite is a classical photoanode material for photoelectrochemical water splitting due to its stability, performance, and low cost. However, the effect of particle size is still a question due to the charge transfer to the electrodes. In this work, we addressed this subject by the fabrication of a photoelectrode with hematite nanoparticles embedded in close contact with the electrode substrate. The nanoparticles were synthesized by a solvothermal method and colloidal stabilization with charged hydroxide molecules, and we were able to further use them to prepare electrodes for water photo-oxidation. Hematite nanoparticles were embedded within electrospun tin-doped indium oxide nanofibers. The fibrous layer acted as a current collector scaffold for the nanoparticles, supporting the effective transport of charge carriers. This method allows better contact of the nanoparticles with the substrate, and also, the fibrous scaffold increases the optical density of the photoelectrode. Electrodes based on nanofibers with embedded nanoparticles display significantly enhanced photoelectrochemical performance compared to their flat nanoparticle-based layer counterparts. This nanofiber architecture increases the photocurrent density and photon-to-current internal conversion efficiency by factors of 2 and 10, respectively.
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Affiliation(s)
- Oren Elishav
- The
Nancy & Stephen Grand Technion Energy Program (GTEP), Technion−Israel Institute of Technology, Haifa 3200002, Israel
| | - David Stone
- Institute
of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Anton Tsyganok
- Department
of Materials Science and Engineering, Technion−Israel
Institute of Technology, Haifa 3200002, Israel
| | - Swetha Jayanthi
- Institute
of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - David S. Ellis
- Department
of Materials Science and Engineering, Technion−Israel
Institute of Technology, Haifa 3200002, Israel
| | - Tamir Yeshurun
- Faculty
of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Itzhak I. Maor
- The
Wolfson Department of Chemical Engineering, Technion−Israel Institute of Technology, Haifa 3200003 Israel
| | - Adar Levi
- Institute
of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Vadim Beilin
- The
Wolfson Department of Chemical Engineering, Technion−Israel Institute of Technology, Haifa 3200003 Israel
| | - Gennady E. Shter
- The
Wolfson Department of Chemical Engineering, Technion−Israel Institute of Technology, Haifa 3200003 Israel
| | - Roie Yerushalmi
- Institute
of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Avner Rothschild
- The
Nancy & Stephen Grand Technion Energy Program (GTEP), Technion−Israel Institute of Technology, Haifa 3200002, Israel
- Department
of Materials Science and Engineering, Technion−Israel
Institute of Technology, Haifa 3200002, Israel
| | - Uri Banin
- Institute
of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Gideon S. Grader
- The
Nancy & Stephen Grand Technion Energy Program (GTEP), Technion−Israel Institute of Technology, Haifa 3200002, Israel
- The
Wolfson Department of Chemical Engineering, Technion−Israel Institute of Technology, Haifa 3200003 Israel
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11
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Ponzoni A. Metal Oxide Chemiresistors: A Structural and Functional Comparison between Nanowires and Nanoparticles. SENSORS 2022; 22:s22093351. [PMID: 35591040 PMCID: PMC9099833 DOI: 10.3390/s22093351] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 02/01/2023]
Abstract
Metal oxide nanowires have become popular materials in gas sensing, and more generally in the field of electronic and optoelectronic devices. This is thanks to their unique structural and morphological features, namely their single-crystalline structure, their nano-sized diameter and their highly anisotropic shape, i.e., a large length-to-diameter aspect ratio. About twenty years have passed since the first publication proposing their suitability for gas sensors, and a rapidly increasing number of papers addressing the understanding and the exploitation of these materials in chemosensing have been published. Considering the remarkable progress achieved so far, the present paper aims at reviewing these results, emphasizing the comparison with state-of-the-art nanoparticle-based materials. The goal is to highlight, wherever possible, how results may be related to the particular features of one or the other morphology, what is effectively unique to nanowires and what can be obtained by both. Transduction, receptor and utility-factor functions, doping, and the addition of inorganic and organic coatings will be discussed on the basis of the structural and morphological features that have stimulated this field of research since its early stage.
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Affiliation(s)
- Andrea Ponzoni
- National Institute of Optics (INO) Unit of Brescia, National Research Council (CNR), 25123 Brescia, Italy; ; Tel.: +39-030-3711440
- National Institute of Optics (INO) Unit of Lecco, National Research Council (CNR), 23900 Lecco, Italy
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12
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Zou C, Ma C, Chen F, Shao X, Cao L, Yang J. Crystal Facet Controlled Stable PbO2 Electrode for Efficient Degradation of Tetracycline. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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Li P, Zhuang X, Xu J, Ruan L, Jiang Y, Lin J, Zhang X. Enhanced Photo-Fenton Activity of SnO2/α-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method. MATERIALS 2022; 15:ma15051743. [PMID: 35268975 PMCID: PMC8911445 DOI: 10.3390/ma15051743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 12/10/2022]
Abstract
The x-SnO2/α-Fe2O3 (x = 0.04, 0.07, and 0.1) heterogeneous composites were successfully prepared via a two-step solvothermal method. These composites were systematically characterized by the X-ray diffraction technique, field emission scanning electron microscopy, an energy dispersive spectrometer, X-ray photoelectron spectroscopy and a UV–visible spectrometer. It was found that SnO2 nanoparticles were uniformly decorated on the surface of α-Fe2O3 particles in these heterogeneous composites. A comparative study of methylene blue (MB) photodegradation by α-Fe2O3 and x-SnO2/α-Fe2O3 composites was carried out. All x-SnO2/α-Fe2O3 composites showed higher MB photodegradation efficiency than α-Fe2O3. When x = 0.07, the MB photodegradation efficiency can reach 97% in 60 min. Meanwhile, the first-order kinetic studies demonstrated that the optimal rate constant of 0.07-SnO2/α-Fe2O3 composite was 0.0537 min−1, while that of pure α-Fe2O3 was only 0.0191 min−1. The catalytic mechanism of MB photodegradation by SnO2/α-Fe2O3 was examined. The SnO2 can act as a sink and help the effective transfer of photo-generated electrons for decomposing hydrogen peroxide (H2O2) into active radicals. This work can provide a new insight into the catalytic mechanism of the photo-Fenton process.
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Affiliation(s)
- Pinghua Li
- School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China;
| | - Xuye Zhuang
- School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China;
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
- Correspondence: (X.Z.); (X.Z.)
| | - Jiahuan Xu
- School of Science, Jiangsu University of Science and Technology, Zhenjiang 212100, China;
| | - Liuxia Ruan
- School of Material Science and Engineering, Northeastern University, Shenyang 110819, China; (L.R.); (Y.J.); (J.L.)
| | - Yangfan Jiang
- School of Material Science and Engineering, Northeastern University, Shenyang 110819, China; (L.R.); (Y.J.); (J.L.)
| | - Jiaxin Lin
- School of Material Science and Engineering, Northeastern University, Shenyang 110819, China; (L.R.); (Y.J.); (J.L.)
| | - Xianmin Zhang
- School of Material Science and Engineering, Northeastern University, Shenyang 110819, China; (L.R.); (Y.J.); (J.L.)
- Correspondence: (X.Z.); (X.Z.)
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14
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Wang H, Ren X, Liu Z, Lv B. Chemical conversion based on the crystal facet effect of transition metal oxides and construction methods for sharp-faced nanocrystals. Chem Commun (Camb) 2022; 58:908-924. [PMID: 34981109 DOI: 10.1039/d1cc06721d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In-depth research has found that the nanocrystal facet of transition metal oxides (TMOs) greatly affects their heterogeneous catalytic performance, as well as the property of photocatalysis, gas sensing, electrochemical reaction, etc. that are all involved in chemical conversion processes. Therefore, the facet-dependent properties of TMO nanocrystals have been fully and carefully studied by combining systematic experiments and theoretical calculations, and mechanisms of chemical reactions are accurately explained at the molecular level, which will be closer to the essence of reactions. Evidently, as an accurate investigation on crystal facets, well-defined TMO nanocrystals are the basis and premise for obtaining relevant credible results, and shape-controlled synthesis of TMO nanocrystals thereby has received great attention and development. The success in understanding of facet-dependent properties and shape-controlled synthesis of TMO nanocrystals is highly valuable for the control of reaction and the design of high-efficiency TMO nanocrystal catalysts as well as other functional materials in practical applications.
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Affiliation(s)
- Huixiang Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
| | - Xiaobo Ren
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
| | - Zhong Liu
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China. .,Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, 810008, China
| | - Baoliang Lv
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
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15
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Jiang B, Tian D, Qiu Y, Song X, Zhang Y, Sun X, Huang H, Zhao C, Guo Z, Fan L, Zhang N. High-Index Faceted Nanocrystals as Highly Efficient Bifunctional Electrocatalysts for High-Performance Lithium-Sulfur Batteries. NANO-MICRO LETTERS 2021; 14:40. [PMID: 34950984 PMCID: PMC8702595 DOI: 10.1007/s40820-021-00769-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 11/07/2021] [Indexed: 05/29/2023]
Abstract
Precisely regulating of the surface structure of crystalline materials to improve their catalytic activity for lithium polysulfides is urgently needed for high-performance lithium-sulfur (Li-S) batteries. Herein, high-index faceted iron oxide (Fe2O3) nanocrystals anchored on reduced graphene oxide are developed as highly efficient bifunctional electrocatalysts, effectively improving the electrochemical performance of Li-S batteries. The theoretical and experimental results all indicate that high-index Fe2O3 crystal facets with abundant unsaturated coordinated Fe sites not only have strong adsorption capacity to anchor polysulfides but also have high catalytic activity to facilitate the redox transformation of polysulfides and reduce the decomposition energy barrier of Li2S. The Li-S batteries with these bifunctional electrocatalysts exhibit high initial capacity of 1521 mAh g-1 at 0.1 C and excellent cycling performance with a low capacity fading of 0.025% per cycle during 1600 cycles at 2 C. Even with a high sulfur loading of 9.41 mg cm-2, a remarkable areal capacity of 7.61 mAh cm-2 was maintained after 85 cycles. This work provides a new strategy to improve the catalytic activity of nanocrystals through the crystal facet engineering, deepening the comprehending of facet-dependent activity of catalysts in Li-S chemistry, affording a novel perspective for the design of advanced sulfur electrodes.
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Affiliation(s)
- Bo Jiang
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Da Tian
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Yue Qiu
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Xueqin Song
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Yu Zhang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Xun Sun
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Huihuang Huang
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Chenghao Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Zhikun Guo
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Lishuang Fan
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
- Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
| | - Naiqing Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
- Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
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16
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Liang Y, Yu D, Jin J, Xiong J, Hou J, Wang M, Tan W. Microstructure of Al-substituted goethite and its adsorption performance for Pb(II) and As(V). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148202. [PMID: 34380282 DOI: 10.1016/j.scitotenv.2021.148202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/07/2021] [Accepted: 05/30/2021] [Indexed: 06/13/2023]
Abstract
Naturally occurring goethite commonly undergoes Al-substitution, while how changes in microstructure induced by Al-substitution affect the interactive reaction of Pb(II) or As(V) at the goethite-water interface remains poorly understood. This study reveals the structural properties of Al-substituted goethite and its adsorption behavior for Pb(II) and As(V) by multiple characterization techniques and Charge Distribution-Multisite Surface Complexation (CD-MUSIC) modeling. Al-substitution caused an obvious decrease in the length-to-width ratio in goethite particles and a slight decrease in the proportion of (110) facets. The presence of Al-O sites and higher surface roughness induced by Al-substitution contributed to a higher inner Stern layer capacitance (C1) and surface charge density of goethite. CD-MUSIC modeling results further revealed that the affinity constant of Pb(II) complex (log KPb) at the goethite-water interface and the adsorption capacity of goethite for Pb(II) decreased with increasing amount of Al-substitution, while an opposite tendency was observed for As(V) adsorption. The dominant species of both Pb(II) and As(V) on goethite were bidentate complexes, and Al-substitution had a minor impact on the abundance of Pb(II) and As(V) complexes on the surface of goethite. Overall, these experimental and modeling results provide new and important insights into the interfacial reactivity of Al-substituted goethite and facilitate the prediction of the environmental fate of heavy metals.
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Affiliation(s)
- Yu Liang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Daohai Yu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiezi Jin
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Juan Xiong
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China.
| | - Jingtao Hou
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Mingxia Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Wenfeng Tan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
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17
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Sui N, Cao S, Zhang P, Zhou T, Zhang T. The effect of different crystalline phases of In 2O 3 on the ozone sensing performance. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126290. [PMID: 34107369 DOI: 10.1016/j.jhazmat.2021.126290] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/29/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Crystalline phase regulation could optimize the band gap, which has a great impact on the amount of chemisorbed gas molecules on the gas sensing materials. Herein, a facile route of hydrothermal method followed by calcination treatment was used to synthesize cubic bixbyite-type (C-In2O3), rhombohedral corundum-type (Rh-In2O3) and the mixed phase In2O3 (Rh+C-In2O3). The band gap of C-In2O3 was narrowed to a suitable value (2.38 eV) and the relative percentage of chemisorbed oxygen was enhanced (31.8%). The sensing results to ozone (O3) indicated that the C-type structure stood out. The gas sensor based on C-In2O3 exhibited extraordinary O3 sensing performances with a response of 5.7 (100 ppb) and an ultralow limit of detection of 30 ppb. The amazing results could be attributed to the narrow band gap and the enrichment of chemisorbed oxygen. This work inspires a new perspective to design highly sensitive and reliable O3 sensors.
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Affiliation(s)
- Ning Sui
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Shuang Cao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Peng Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Tingting Zhou
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
| | - Tong Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
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18
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Xu T, Chen N, He Z, Yu P, Shen W, Akasaka T, Lu X. Morphology Engineering of Fullerene[C 70 ] Microcrystals: From Perfect Cubes, Defective Hoppers to Novel Cruciform-Pillars. Chemistry 2021; 27:10387-10393. [PMID: 33899282 DOI: 10.1002/chem.202100958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Indexed: 11/09/2022]
Abstract
Controlled crystallization of fullerene molecules into ordered molecular assemblies is important for their applications. However, the morphology engineering of fullerene[C70 ] assemblies is challenging, and complicated architectures have rarely been reported due to the low molecular symmetry of C70 molecules, which makes their crystallization difficult to control and the low production yield as well. Herein, with the assistance of solvent intercalation, a general reprecipitation approach is reported to prepare morphologically controllable C70 microcrystals with mesitylene as a good solvent and n-propanol as a poor solvent in one solvent system without replacing specific solvents. A series of C70 microcrystals with high uniformity from perfect cubes and defective hoppers to novel cruciform-pillars are obtained by intentionally tuning C70 concentration and the volume ratio of mesitylene to n-propanol. Among them, novel cruciform-pillar-shaped microcrystals are obtained for the first time by further decreasing the amount of mesitylene in the solvent-intercalated microcrystals. Notably, the C70 concentration is a key parameter for the selective growth of C70 hopper, rather than the volume ratio of mesitylene to n-propanol. Interestingly, the hopper-shaped microcrystals exhibit excellent photoluminescence properties relative to those of cubes and cruciform-pillars owing to the enhanced light absorption, proving their potential applications in optoelectronic devices. This study offers new insights into the morphology-controlled synthesis of other micro/nanostructured organic microcrystals and the fine tuning of photoluminescence properties of organic crystals.
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Affiliation(s)
- Ting Xu
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Ning Chen
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhimin He
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Pengwei Yu
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Wangqiang Shen
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Takeshi Akasaka
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xing Lu
- State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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19
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TiO2 nanofibers decorated with monodispersed WO3 heterostruture sensors for high gas sensing performance towards H2 gas. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108663] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Gao M, He G, Zhang W, Du J, He H. Reaction Pathways of the Selective Catalytic Reduction of NO with NH 3 on the α-Fe 2O 3(012) Surface: a Combined Experimental and DFT Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10967-10974. [PMID: 34165293 DOI: 10.1021/acs.est.1c01628] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fe2O3-based catalysts have promising potential in the selective catalytic reduction (SCR) of NO with NH3 with the advantages of environmental friendliness, excellent medium-high SCR activity, good N2 selectivity, and high SO2 tolerance. However, the NH3-SCR mechanism over Fe2O3-based catalysts remains highly uncertain and controversial due to the complex nature of the SCR reaction. Herein, the NH3-SCR reaction pathways over the α-Fe2O3(012) surface are elucidated at the atomic level by density functional theory calculations and experimental measurements. We demonstrate that, different from the NH3 activation mechanism in numerous SCR catalytic systems, the reaction tends to follow the NO activation mechanism, in which NO activated at Fe sites reacts with NH3 to form a NH2NO intermediate and further decomposes into N2 and H2O, in synchronization with the formation of a surface OH group. Subsequently, the catalyst is regenerated by an O2-assisted surface-dehydrogenation process. The activation of NO as well as the formation of the NH2NO intermediate is the rate-determining step of the complete SCR cycle. This study enhances the atomic-level understanding toward the NH3-SCR reaction and provides insights for the development of Fe2O3-based SCR catalysts.
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Affiliation(s)
- Meng Gao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenshuo Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinpeng Du
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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21
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Wang H, Ma J, Zhang J, Feng Y, Vijjapu MT, Yuvaraja S, Surya SG, Salama KN, Dong C, Wang Y, Kuang Q, Tshabalala ZP, Motaung DE, Liu X, Yang J, Fu H, Yang X, An X, Zhou S, Zi B, Liu Q, Urso M, Zhang B, Akande AA, Prasad AK, Hung CM, Van Duy N, Hoa ND, Wu K, Zhang C, Kumar R, Kumar M, Kim Y, Wu J, Wu Z, Yang X, Vanalakar SA, Luo J, Kan H, Li M, Jang HW, Orlandi MO, Mirzaei A, Kim HW, Kim SS, Uddin ASMI, Wang J, Xia Y, Wongchoosuk C, Nag A, Mukhopadhyay S, Saxena N, Kumar P, Do JS, Lee JH, Hong S, Jeong Y, Jung G, Shin W, Park J, Bruzzi M, Zhu C, Gerald RE, Huang J. Gas sensing materials roadmap. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33. [PMID: 33794513 DOI: 10.1088/1361-648x/abf477] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 04/01/2021] [Indexed: 05/14/2023]
Abstract
Gas sensor technology is widely utilized in various areas ranging from home security, environment and air pollution, to industrial production. It also hold great promise in non-invasive exhaled breath detection and an essential device in future internet of things. The past decade has witnessed giant advance in both fundamental research and industrial development of gas sensors, yet current efforts are being explored to achieve better selectivity, higher sensitivity and lower power consumption. The sensing layer in gas sensors have attracted dominant attention in the past research. In addition to the conventional metal oxide semiconductors, emerging nanocomposites and graphene-like two-dimensional materials also have drawn considerable research interest. This inspires us to organize this comprehensive 2020 gas sensing materials roadmap to discuss the current status, state-of-the-art progress, and present and future challenges in various materials that is potentially useful for gas sensors.
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Affiliation(s)
- Huaping Wang
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jianmin Ma
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jun Zhang
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Yuezhan Feng
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450002 Henan, People's Republic of China
| | - Mani Teja Vijjapu
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Saravanan Yuvaraja
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Sandeep G Surya
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Khaled N Salama
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Chengjun Dong
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Yude Wang
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Qin Kuang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Zamaswazi P Tshabalala
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - David E Motaung
- Department of Physics, University of the Free State, PO Box 339, Bloemfontein ZA9300, South Africa
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - Xianghong Liu
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Junliang Yang
- School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Haitao Fu
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xiaohong Yang
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xizhong An
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Shiqiang Zhou
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Baoye Zi
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Qingju Liu
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Mario Urso
- IMM-CNR and Dipartimento di Fisica e Astronomia 'Ettore Majorana', Università di Catania, via S Sofia 64, 95123 Catania, Italy
| | - Bo Zhang
- School of Internet of Things Engineering, Jiangnan University, Lihu Avenue 1800#, Wuxi, 214122, People's Republic of China
| | - A A Akande
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
- Advanced Internet of Things, CSIR NextGen Enterprises and Institutions, PO Box 395, Pretoria, 0001, South Africa
| | - Arun K Prasad
- Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India
| | - Chu Manh Hung
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Van Duy
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Kaidi Wu
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Rahul Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Youngjun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jin Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zixuan Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xing Yang
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - S A Vanalakar
- Department of Physics, Karmaveer Hire Arts, Science, Commerce and Education College, Gargoti 416-009, India
| | - Jingting Luo
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Hao Kan
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Min Li
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul 08826, Republic of Korea
| | - Marcelo Ornaghi Orlandi
- Department of of Engineering, Physics and Mathematics, São Paulo State University (UNESP), Araraquara - SP 14800-060, Brazil
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, 71557-13876, Iran
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
| | - A S M Iftekhar Uddin
- Department of Electrical and Electronic Engineering, Metropolitan University, Bateshwar, Sylhet-3103, Bangladesh
| | - Jing Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yi Xia
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, People's Republic of China
| | - Chatchawal Wongchoosuk
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Anindya Nag
- DGUT-CNAM Institute, Dongguan University of Technology, Dongguan, People's Republic of China
| | | | - Nupur Saxena
- Department of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J&K-181143, India
| | - Pragati Kumar
- Department of Nanosciences and Materials, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J & K -181143, India
| | - Jing-Shan Do
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
| | - Jong-Ho Lee
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seongbin Hong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yujeong Jeong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Gyuweon Jung
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Wonjun Shin
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jinwoo Park
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Mara Bruzzi
- Department of Physics and Astronomy, Unviersity of Florence, Via G. Sansone 1, Sesto Fiorentino, Florence, Italy
| | - Chen Zhu
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Rex E Gerald
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Jie Huang
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
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22
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Hu S, Wu Y, Li F, Shi Z, Ma C, Liu T. Fulvic Acid-Mediated Interfacial Reactions on Exposed Hematite Facets during Dissimilatory Iron Reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6139-6150. [PMID: 33974438 DOI: 10.1021/acs.langmuir.1c00124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Although the dual role of natural organic matter (NOM) as an electron shuttle and an electron donor for dissimilatory iron (Fe) reduction has been extensively investigated, the underlying interfacial interactions between various exposed facets and NOM are poorly understood. In this study, fulvic acid (FA), as typical NOM, was used and its effect on the dissimilatory reduction of hematite {001} and {100} by Shewanella putrefaciens CN-32 was investigated. FA accelerates the bioreduction rates of hematite {001} and {100}, where the rate of hematite {100} is lower than that of hematite {001}. Secondary Fe minerals were not observed, but the HR-TEM images reveal significant defects. The ATR-FTIR results demonstrate that facet-dependent binding mainly occurs via surface complexation between the surface iron atoms and carboxyl groups of NOM. The spectroscopic and mass spectrometry analyses suggest that organic compounds with large molecular weight, highly aromatic and unsaturated structures, and lower H/C ratios are easily adsorbed on Fe oxides or decomposed by bacteria in FA-hematite {001} treatment after iron reduction. Due to the metabolic processes of cells, a significant number of compounds with higher H/C and medium O/C ratios appear. The Tafel curves show that hematite {100} possessed higher resistance (4.1-2.6 Ω) than hematite {001} (3.5-2.2 Ω) at FA concentrations ranging from 0 to 500 mg L-1, indicating that hematite {100} is less conductive during the electron transfer from reduced FA or cells to Fe oxides than hematite {001}. Overall, the discrepancy in the iron bioreduction of two exposed facets is attributed to both the different electrochemical activities of the Fe oxides and the different impacts on the properties and composition of OM. Our findings shed light on the molecular mechanisms of mutual interactions between FA and Fe oxides with various facets.
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Affiliation(s)
- Shiwen Hu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China
| | - Yundang Wu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, P. R. China
| | - Fangbai Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, P. R. China
| | - Zhenqing Shi
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China
| | - Chao Ma
- School of Earth System Science, Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, P. R. China
| | - Tongxu Liu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, P. R. China
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23
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Khatoon R, Rauf S, Haq MU, Attique S, Din SU, Ali N, Guo Y, Chen H, Tian Y, Lu J. Design of highly sensitive and selective ethanol sensor based on α-Fe 2O 3/Nb 2O 5 heterostructure. NANOTECHNOLOGY 2021; 32:195503. [PMID: 33470969 DOI: 10.1088/1361-6528/abdd5e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The introduction of heterostructures is a new approach in gas sensing due to their easy and quick transport of charges. Herein, facile hydrothermal and solid-state techniques are employed to synthesize an α-Fe2O3/Nb2O5 heterostructure. The morphology, microstructure, crystallinity and surface composition of the synthesized heterostructures are investigated by scanning electron microscope, transmission electron microscope, x-ray diffraction, x-ray photoelectron spectroscopy and Brunauer-Emmett-Teller analyses. The successful fabrication of the heterostructures was achieved via the mutual incorporation of α-Fe2O3 nanorods with Nb2O5 interconnected nanoparticles (INPs). A sensor based on the α-Fe2O3(0.09)/Nb2O5 heterostructure with a high surface area exhibited enhanced gas-sensing features, maintaining high selectivity and sensitivity, and a considerable recovery percentage towards ethanol gas. The sensing response of the α-Fe2O3(0.09)/Nb2O5 heterostructure at lower operating temperature (160 °C) is around nine times higher than a pure Nb2O5 (INP) sensor at 180 °C with the flow of 100 ppm ethanol gas. The sensors also show excellent selectivity, good long-term stability and a rapid response/recovery time (8s/2s, respectively) to ethanol. The superior electronic conductivity and upgraded sensitivity performance of gas sensors based on the α-Fe2O3(0.09)/Nb2O5 heterostructure are attributed due to its unique structural features, high specific surface area and the synergic effect of the n-n heterojunction. The promising results demonstrate the potential application of the α-Fe2O3(0.09)/Nb2O5 heterostructure as a good sensing material for the fabrication of ethanol sensors.
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Affiliation(s)
- Rabia Khatoon
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Sajid Rauf
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, People's Republic of China
| | - Mahmood Ul Haq
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Sanam Attique
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Salah Ud Din
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Nasir Ali
- Zhejiang Province Key Laboratory of Quantum Technology and Devices and Department of Physics, State Key Laboratory for Silicon Materials, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Yichuan Guo
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Hongwen Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Yang Tian
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Jianguo Lu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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24
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Xie H, Geng Q, Liu X, Xu X, Wang F, Mao L, Mao J. Solvent-assisted synthesis of dendritic cerium hexacyanocobaltate and derived porous dendritic Co3O4/CeO2 as supercapacitor electrode materials. CrystEngComm 2021. [DOI: 10.1039/d0ce01726d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Here, we report a solvent-mediated synthetic route for preparing cerium hexacyanocobaltate with a dendritic shape. The porous dendritic Co3O4/CeO2 was prepared after annealing at 500 °C, served as a supercapacitor electrode.
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Affiliation(s)
- Hongtao Xie
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qin Geng
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Xiaoyue Liu
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xia Xu
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Fei Wang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - LiMin Mao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jian Mao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
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25
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Rudel HE, Lane MKM, Muhich CL, Zimmerman JB. Toward Informed Design of Nanomaterials: A Mechanistic Analysis of Structure-Property-Function Relationships for Faceted Nanoscale Metal Oxides. ACS NANO 2020; 14:16472-16501. [PMID: 33237735 PMCID: PMC8144246 DOI: 10.1021/acsnano.0c08356] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Nanoscale metal oxides (NMOs) have found wide-scale applicability in a variety of environmental fields, particularly catalysis, gas sensing, and sorption. Facet engineering, or controlled exposure of a particular crystal plane, has been established as an advantageous approach to enabling enhanced functionality of NMOs. However, the underlying mechanisms that give rise to this improved performance are often not systematically examined, leading to an insufficient understanding of NMO facet reactivity. This critical review details the unique electronic and structural characteristics of commonly studied NMO facets and further correlates these characteristics to the principal mechanisms that govern performance in various catalytic, gas sensing, and contaminant removal applications. General trends of facet-dependent behavior are established for each of the NMO compositions, and selected case studies for extensions of facet-dependent behavior, such as mixed metals, mixed-metal oxides, and mixed facets, are discussed. Key conclusions about facet reactivity, confounding variables that tend to obfuscate them, and opportunities to deepen structure-property-function understanding are detailed to encourage rational, informed design of NMOs for the intended application.
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Affiliation(s)
- Holly E Rudel
- Department of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
| | - Mary Kate M Lane
- Department of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
| | - Christopher L Muhich
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
- School for the Engineering of Matter, Transport, and Energy, Ira A Fulton Schools of Engineering, Arizona State University, Tempe, Arizona 85001, United States
| | - Julie B Zimmerman
- Department of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
- School of Forestry and Environmental Studies, Yale University, 195 Prospect Street, New Haven, Connecticut 06511, United States
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26
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Arunbalaji S, Ismail MAM, Arivanandhan M, Alsalme A, Alghamdi A, Jayavel R. High Sensitive Electrochemical Nitrite Sensor Using Fe2O3/MoS2 Nanocomposites Synthesized by Facile Method. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Riyadh Province-11451, Saudi Arabia
| | - Abdulaziz Alghamdi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Riyadh Province-11451, Saudi Arabia
| | - Ramasamy Jayavel
- Centre for Nanoscience and Technology, Anna University, Chennai-600 025, India
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27
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Na HG, Byoun Y, Park S, Choi MS, Jin C. Experimental study of superheating of tin powders. Sci Rep 2020; 10:19026. [PMID: 33149173 PMCID: PMC7643175 DOI: 10.1038/s41598-020-76223-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/09/2020] [Indexed: 11/09/2022] Open
Abstract
An unstable energy-unbalanced state such as superheating or supercooling is often unexpectedly observed because a factor of energy depends not only on the temperature but is a product of temperature (T) and entropy (S). Thus, at the same temperature, if the entropy is different, the total energy of the system can be different. In such cases, the temperature-change-rate cannot match the entropy-change-rate, which results in a hysteresis curve for the temperature/entropy relationship. Due to the difference between the temperature- and entropy-change-rates, properties of a material, such as the boiling and freezing points, can be extended from point to area. This study confirmed that depending on the heating rate, tin powders exhibit different melting points. Given the contemporary reinterpretation of many energy-non-equilibrium phenomena that have only been discussed on the basis of temperature, this study is expected to contribute to the actual expansion of scientific/engineering applications.
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28
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Carbon Deposition on Hematite (α-Fe2O3) Nanocubes by Annealing in the Air: Morphology Study with Grazing Incidence Small Angle X-ray Scattering (GISAXS). CONDENSED MATTER 2020. [DOI: 10.3390/condmat5030054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
GISAXS has been used to study morphology change of α-Fe2O3 nanocubes after annealing processes. A submonolayer of the nanocubes was deposited on a Si(100) substrate. While an annealing at 400 °C in vacuum does not change a GISAXS pattern from as-prepared nanocubes submonolayer, subsequent annealing in air at the same temperature altered the GISAXS pattern significantly. SEM images showed that the air-annealed nanocubes were coated with thin layers which were identified as amorphous carbon layers based on Raman measurements. GISAXS simulations from morphologies of nanocube with 38 nm side-length and core-shell (nanocube-core and 7 nm thick carbon-shell) reproduced measured patterns from the vacuum- and the air-annealed nanocubes, respectively. The current study provides new approach for in-situ characterization of carbon deposition on a uniform shape nanoparticle through monitoring of deposited carbon thickness.
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29
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Chen M, Yin H, Li X, Qiu Y, Cao G, Wang J, Yang X, Wang P. Facet- and defect-engineered Pt/Fe 2O 3 nanocomposite catalyst for catalytic oxidation of airborne formaldehyde under ambient conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122628. [PMID: 32305715 DOI: 10.1016/j.jhazmat.2020.122628] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/13/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Formaldehyde (HCHO) is one of the most infamous indoor pollutants that imposes a great threat to human health. Herein, we report the development of a high-performance Pt/Fe2O3 catalyst for HCHO oxidation employing a facet- and defect-engineering strategy, with special focus on the surface structure effect of α-Fe2O3 on the catalytic properties. A supported Pt nanocatalyst on hollow octadecahedral α-Fe2O3 with exclusively exposed {113} and {104} facets was prepared using a hydrothermal method followed by impregnation-reduction treatment. The high-index facets of α-Fe2O3 render the formation of abundant oxygen vacancies and an improved dispersion of Pt nanoparticles. This led to an increased Pt/O-vacancy coexistence in close proximity, which collaboratively promote the generation of active oxygen and surface OH species. As a consequence, the Pt/Fe2O3-HO catalyst exhibited impressively high and stable activity towards HCHO oxidation at room temperature, which was five-fold higher than that of the supported Pt catalyst on commercial α-Fe2O3.
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Affiliation(s)
- Muhua Chen
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Hui Yin
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Xiaoyin Li
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Yuping Qiu
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Guoxuan Cao
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Jiajun Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Xianfeng Yang
- Analytical and Testing Centre, South China University of Technology, Guangzhou 510641, PR China
| | - Ping Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China.
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30
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Surface configuration modulation for FeO -CeO2/γ-Al2O3 catalysts and its influence in CO oxidation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Patra AK, Amoli V, Sinha AK, Kim D. Unusual Photoactive Water Oxidation Activity of Pt/PtO
x
Cocatalyst Decorated Crystalline α‐Fe
2
O
3
Nanostructures: Exposed Facets Dependent Reactivity. ChemCatChem 2020. [DOI: 10.1002/cctc.201902070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Astam K. Patra
- School of Chemical EngineeringSungkyunkwan University Suwon Gyeonggi 16419 (Republic of Korea
- Department of ChemistryUniversity of Kalyani Kalyani 741235 West Bengal India
| | - Vipin Amoli
- Refining Technology DivisionCSIR-Indian Institute of Petroleum Dehradun 248005 India
| | - Anil K. Sinha
- Refining Technology DivisionCSIR-Indian Institute of Petroleum Dehradun 248005 India
| | - Dukjoon Kim
- School of Chemical EngineeringSungkyunkwan University Suwon Gyeonggi 16419 (Republic of Korea
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32
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Tian M, Liu S, Wang L, Ding H, Zhao D, Wang Y, Cui J, Fu J, Shang J, Li GK. Complete Degradation of Gaseous Methanol over Pt/FeO x Catalysts by Normal Temperature Catalytic Ozonation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1938-1945. [PMID: 31904227 DOI: 10.1021/acs.est.9b06342] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Normal temperature catalytic ozonation (NTCO) is a promising yet challenging method for the removal of volatile organic compounds (VOCs) because of limited activity of the catalysts at ambient temperature. Here, we report a series of Pt/FeOx catalysts prepared by the co-precipitation method for NTCO of gaseous methanol. All samples were found to be active and among them, the Pt/FeOx-400 (calcined at 400 °C) catalyst with a Pt cluster loading of 0.2% exhibited the highest activity, able to completely convert methanol into CO2 and H2O at 30 °C. Extensive experimental research suggested that the superior catalytic activity could be attributed to the highly dispersed Pt clusters and an appropriate molar ratio of Pt0/Pt2+. Furthermore, electron paramagnetic resonance and density functional theory computational studies revealed the mechanism that the Pt/FeOx-400 catalyst could activate O3 and water effectively to produce hydroxyl radicals responsible for the catalytic oxidation of methanol. The findings of this work may foster the development of technologies for normal temperature abatement of VOCs with low energy consumption.
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Affiliation(s)
- Mingze Tian
- School of Chemical Engineering & Technology , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Shejiang Liu
- School of Environmental Science & Engineering , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Lulu Wang
- School of Environmental Science & Engineering , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Hui Ding
- School of Environmental Science & Engineering , Tianjin University , Jinnan District, Tianjin 300350 , China
- Department of Chemical and Biomolecular Engineering , The University of Melbourne , Melbourne VIC 3010 , Australia
| | - Dan Zhao
- School of Environmental Science & Engineering , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Yongqiang Wang
- Department of Chemical and Biomolecular Engineering , The University of Melbourne , Melbourne VIC 3010 , Australia
| | - Jiahao Cui
- School of Chemical Engineering & Technology , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Jianfeng Fu
- School of Environmental Science & Engineering , Tianjin University , Jinnan District, Tianjin 300350 , China
| | - Jin Shang
- School of Energy and Environment , City University of Hong Kong , Tat Chee Avenue , Kowloon , Hong Kong SAR 999077 , People's Republic of China
| | - Gang Kevin Li
- Department of Chemical and Biomolecular Engineering , The University of Melbourne , Melbourne VIC 3010 , Australia
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33
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Takashima T, Hemmi S, Liu Q, Irie H. Facet-dependent activity of hematite nanocrystals toward the oxygen evolution reaction. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00655f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hematite showed facet-dependent OER activity and its origin was investigated based on in situ UV-vis absorption measurements and theoretical calculations.
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Affiliation(s)
- Toshihiro Takashima
- Clean Energy Research Center
- University of Yamanashi
- Kofu
- Japan
- Integrated Graduate School of Medicine, Engineering and Agricultural Sciences
| | - Shota Hemmi
- Integrated Graduate School of Medicine, Engineering and Agricultural Sciences
- University of Yamanashi
- Kofu
- Japan
| | - Qingyu Liu
- Department of Applied Chemistry
- Faculty of Engineering
- University of Yamanashi
- Kofu
- Japan
| | - Hiroshi Irie
- Clean Energy Research Center
- University of Yamanashi
- Kofu
- Japan
- Integrated Graduate School of Medicine, Engineering and Agricultural Sciences
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34
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Zong M, Zhang X, Wang Y, Huang X, Zhou J, Wang Z, De Yoreo JJ, Lu X, Rosso KM. Synthesis of 2D Hexagonal Hematite Nanosheets and the Crystal Growth Mechanism. Inorg Chem 2019; 58:16727-16735. [DOI: 10.1021/acs.inorgchem.9b02883] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meirong Zong
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - Yining Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - Xiaopeng Huang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - Jianbin Zhou
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - Zheming Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
| | - James J. De Yoreo
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Xiancai Lu
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kevin M. Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99354, United States
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He P, Ding Z, Zhao X, Liu J, Yang S, Gao P, Fan LZ. Single-Crystal α-Fe 2O 3 with Engineered Exposed (001) Facet for High-Rate, Long-Cycle-Life Lithium-Ion Battery Anode. Inorg Chem 2019; 58:12724-12732. [PMID: 31508949 DOI: 10.1021/acs.inorgchem.9b01626] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Designing electrode materials with engineered exposed facets provides a novel strategy to improve their electrochemical properties. However, the controllability of the exposed facet remains a daunting challenge, and a deep understanding of the correlation between exposed facet and Li+-transfer behavior has been rarely reported. In this work, single-crystal α-Fe2O3 hexagonal nanosheets with an exposed (001) facet are prepared with the assistance of aluminum ions through a one-step hydrothermal process, and structural characterizations reveal an Al3+-concentration-dependent-growth mechanism for the α-Fe2O3 nanosheets. Furthermore, such α-Fe2O3 nanosheets, when used as lithium-ion battery anodes, exhibit high specific capacity (1261.3 mAh g-1 at 200 mA g-1), high rate capability (with a reversible capacity of approximately 605 mAh g-1 at 10 A g-1), and excellent cyclic stability (with a capacity of over 900 mAh g-1 during 500 cycles). The superior electrochemical performance of α-Fe2O3 nanosheets is attributed to the pseudocapacitive behavior, Al-doping in the α-Fe2O3 structure, and improved Li+-transfer property across the (001) facet, as elucidated by first-principles calculations based on density functional theory. These results reveal the underlying mechanism of Li+ transfer across different facets and thus provide insights into the understanding of the excellent electrochemical performance.
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Affiliation(s)
- Pingge He
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Zhengping Ding
- International Center for Quantum Materials, and Electron Microscopy Laboratory, School of Physics , Peking University , Beijing 100871 , China
| | - Xudong Zhao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Jiahao Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
| | - Shuanglei Yang
- School of Material Science and Engineering , Qingdao University , Qingdao 266071 , China
| | - Peng Gao
- International Center for Quantum Materials, and Electron Microscopy Laboratory, School of Physics , Peking University , Beijing 100871 , China
| | - Li-Zhen Fan
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Advanced Materials and Technology , University of Science and Technology Beijing , Beijing 100083 , China
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36
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Huang X, Chen Y, Walter E, Zong M, Wang Y, Zhang X, Qafoku O, Wang Z, Rosso KM. Facet-Specific Photocatalytic Degradation of Organics by Heterogeneous Fenton Chemistry on Hematite Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10197-10207. [PMID: 31397154 DOI: 10.1021/acs.est.9b02946] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hematite nanoparticles are abundant in the photic zone of aquatic environments, where they play a prominent role in photocatalytic transformations of bound organics. Here, we examine the photocatalytic degradation of rhodamine B by visible light using two different structurally well-defined hematite nanoparticle morphologies. In addition to detailed solid characterization and aqueous kinetics measurements, we also exploit species-selective scavengers in electron paramagnetic resonance spectroscopy to sequester specific reaction channels and thereby assess their impact. The photodegradation rates for nanoplates dominated by {001} facets and nanocubes dominated by {012} facets were 0.13 and 0.7 h-1, respectively, and the turnover frequencies for the active sites on {001} and {012} were 7.89 × 10-3 and 3.07× 10-3 s-1, yielding apparent activation energies of 17.13 and 24.94 kcal/mol within the energetic span model, respectively. Facet-specific differences appear to be directly not linked with the simple aerial cation site density but instead with their extent of undercoordination. By establishing this linkage, the findings lay a foundation for predicting the photocatalytic degradation efficiency for the myriad of possible hematite nanoparticle morphologies and more broadly help unveil key reactions at the interface that may govern photocatalytic organic transformations in natural and engineered aquatic environments.
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Affiliation(s)
- Xiaopeng Huang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Ying Chen
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Eric Walter
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Meirong Zong
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Yang Wang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Odeta Qafoku
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Zheming Wang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Kevin M Rosso
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
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37
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Sun S, Zhang X, Cui J, Yang Q, Liang S. High-index faceted metal oxide micro-/nanostructures: a review on their characterization, synthesis and applications. NANOSCALE 2019; 11:15739-15762. [PMID: 31433431 DOI: 10.1039/c9nr05107d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exposed high-index facets with a high density of low-coordinated atoms (including edges, steps and kinks) can provide more high-active sites for chemical reactions. Therefore, great progress has made in the facet-dependent application of various high-index faceted micro-/nanostructures in the past decades. Previous review papers have mainly highlighted the advances in high-index faceted noble metal nanocrystals. However, to date, there is no specialized review paper on high-index faceted metal oxides and their facet-dependent applications. Thus, in this review, the existing high-index faceted metal oxide micro-/nanostructures, including Cu2O, TiO2, Fe2O3, ZnO, SnO2 and BiVO4, are reviewed based on their characterization, synthesis engineering and facet-dependent applications in the fields of catalysis, sensors, lithium-ion batteries and carbon monoxide oxidation. Also, several challenges and perspectives are presented. Hopefully, this review article will be a useful guideline and resource for researchers currently concentrating on high-index faceted metal oxides to design and synthesize novel micro-/nanostructures for overcoming the practical environment-, biology- and energy-related problems.
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Affiliation(s)
- Shaodong Sun
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, People's Republic of China.
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38
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Jain S, Panigrahi A, Sarma TK. Counter Anion-Directed Growth of Iron Oxide Nanorods in a Polyol Medium with Efficient Peroxidase-Mimicking Activity for Degradation of Dyes in Contaminated Water. ACS OMEGA 2019; 4:13153-13164. [PMID: 31460442 PMCID: PMC6705086 DOI: 10.1021/acsomega.9b01201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/22/2019] [Indexed: 05/31/2023]
Abstract
Development of nanozymes, which are nanomaterials with intrinsic enzymatic properties, has emerged as an appealing alternative to the natural enzymes with tremendous application potential from the chemical industry to biomedicine. The self-assembled growth of micrometer-sized oxide materials with controlled nonspherical shapes can be an important tool for enhancing activity as artificial enzymes, as the formation of these superstructures often results in high surface area with favorable impact on catalytic activity. Herein, the growth of rod-shaped Fe3O4 microstructures via a one-pot microwave-based method and using a water-poly(ethylene glycol) mixture as a solvent is reported, without the involvement of external shape-directing agents. The precursor metal salt played a key role in the size, shape, and phase selective evolution of iron oxide micro/nanomaterials. Whereas self-assembled microrod superstructures were obtained using Fe(NO3)3 as the metal salt precursor, use of FeCl3 or Fe-acetate as precursors afforded hollow Fe2O3 microparticles and Fe3O4 nanoparticles, respectively. A graphitic layer was deposited on the Fe3O4 surface, imparting a negative surface charge as a result of a high-temperature treatment of poly(ethylene glycol). The rod-shaped Fe3O4 microcrystals show efficient peroxidase-mimicking activity toward 3,3,5,5'-tetramethylbenzidine and pyrogallol as peroxidase substrates with a Michaelis-Menten rate constant (K m) value of 0.05 and 0.52 mM, respectively. The proficient enzyme mimicking behavior of these magnetic superstructures was further explored for the degradation of organic dyes that includes rhodamine B, methylene blue, and methyl orange with a rate constant (k) of 0.038, 0.011, and 0.007 min-1 respectively, using H2O2. This fast and simple method could help to develop a new pathway for differently shaped oxide nanoparticles in a sustainable and economical manner that can be harnessed as nanozymes for industrial as well as biological applications.
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Affiliation(s)
- Siddarth Jain
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Abhiram Panigrahi
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Tridib K. Sarma
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
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Zhou T, Cao S, Zhang R, Tu J, Fei T, Zhang T. Effect of Cation Substitution on the Gas-Sensing Performances of Ternary Spinel MCo 2O 4 (M = Mn, Ni, and Zn) Multishelled Hollow Twin Spheres. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28023-28032. [PMID: 31291077 DOI: 10.1021/acsami.9b07546] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Advanced sensing materials are in high demand for sensitive, real-time, and continuous detection of gas molecules for gas sensors, which have been becoming an effective tool for environmental monitoring and disease diagnosis. Cobalt-containing spinel oxides are promising sensing materials for the gas-sensing reaction owing to their element abundance and remarkable activity. Structural and component properties can be modulated to optimize the sensing performances by substituting Co with other transition metals. Herein, a systematic study of spinel MCo2O4 oxides (M = Mn, Ni, and Zn) toward gas sensing is presented. Results show that ZnCo2O4 materials with a multishelled hollow twin-sphere structure obtained excellent sensing performances to formaldehyde and acetone at different temperatures. The replacement of Co with Zn in the lattice improves the oxygen-chemisorbing ability, which allows new opportunities to synthesize and design highly sensitive chemical sensors.
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Affiliation(s)
- Tingting Zhou
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P. R. China
| | - Shuang Cao
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P. R. China
| | - Rui Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P. R. China
| | - Jinchun Tu
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Materials and Chemical Engineering , Hainan University , Haikou 570228 , P. R. China
| | - Teng Fei
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P. R. China
- State Key Laboratory of Transducer Technology , Shanghai 200050 , P. R. China
| | - Tong Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , P. R. China
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40
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Effect of defects in TiO2 nanoplates with exposed {001} facets on the gas sensing properties. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.12.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Pincus LN, Lounsbury AW, Zimmerman JB. Toward Realizing Multifunctionality: Photoactive and Selective Adsorbents for the Removal of Inorganics in Water Treatment. Acc Chem Res 2019; 52:1206-1214. [PMID: 30969749 DOI: 10.1021/acs.accounts.8b00668] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Persistent and potentially toxic inorganic oxoanions (e.g., arsenic and selenium) are one class of contaminants of concern in drinking water for which treatment technologies must be improved. Effective removal of these oxoanions is made difficult by the varying adsorption affinity of the different oxidation states, as well as the presence of background ions with similar chemical structure and behavior that strongly compete for adsorption sites, greatly reducing removal efficiencies. Recent studies pointing to the negative health effects of inorganic oxoanion contaminants have resulted or are expected to result in new regulations lowering their allowable maximum concentration level (MCL) in drinking water. While these regulations are intended to protect human and environmental health, they must also allow for balanced economic costs. As such, the MCLs are often set at levels that are not as health protective due to high treatment costs that continue to present a significant challenge for small (500-3300 people) to very small (25-500 people) communities. In this Account, we focus on the development of novel cost-effective, sustainable, and efficient multifunctional and selective adsorbents that offer solutions to the above challenges through two platforms: nanoenabled and transition-metal cross-linked chitosan (TMCC) and crystal facet engineered nanometal oxides (NMO). These complementary platforms offer treatment solutions at different scales and flow rates (e.g., in a point-of-use device versus a small-scale community system). Multifunctional adsorbents combine processes that traditionally require multiple steps offering the potential for reducing treatment time and costs. Development of selective adsorbents can greatly increase removal efficiencies of target contaminants by either promoting their adsorption or hindering adsorption of competitive ions. The following sections describe (1) synthesis of novel nanoenabled waste sourced bioadsorbents; (2) development of multifunctional adsorbents to simultaneously photo-oxidize arsenite and adsorb arsenate; (3) development of a selective adsorbent for removal of arsenate and selenite over phosphate; (4) investigations of the conventional wisdom that increased surface area yields increased oxoanion removal using selenium sorption on nanohematite as a case study; and (5) crystal engineering of nanohematite to promote selenite adsorption. The novel technologies developed through these research efforts can serve as templates for the creation of future adsorbents tailored for use targeting other oxoanion contaminants of interest.
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Affiliation(s)
- Lauren N. Pincus
- School of Forestry and Environmental Studies, Yale University, 195 Prospect Street, New Haven, Connecticut 06511, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
| | - Amanda W. Lounsbury
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
- Department of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
| | - Julie B. Zimmerman
- School of Forestry and Environmental Studies, Yale University, 195 Prospect Street, New Haven, Connecticut 06511, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Yale University, New Haven, Connecticut 06511, United States
- Department of Chemical and Environmental Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
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42
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Surface-Controlled Photocatalysis and Chemical Sensing of TiO2, α-Fe2O3, and Cu2O Nanocrystals. CRYSTALS 2019. [DOI: 10.3390/cryst9030163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A relatively new approach to the design of photocatalytic and gas sensing materials is to use the shape-controlled nanocrystals with well-defined facets exposed to light or gas molecules. An abrupt increase in a number of papers on the synthesis and characterization of metal oxide semiconductors such as a TiO2, α-Fe2O3, Cu2O of low-dimensionality, applied to surface-controlled photocatalysis and gas sensing, has been recently observed. The aim of this paper is to review the work performed in this field of research. Here, the focus is on the mechanism and processes that affect the growth of nanocrystals, their morphological, electrical, and optical properties and finally their photocatalytic as well as gas sensing performance.
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43
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Lounsbury AW, Wang R, Plata DL, Billmyer N, Muhich C, Kanie K, Sugimoto T, Peak D, Zimmerman JB. Preferential adsorption of selenium oxyanions onto {1 1 0} and {0 1 2} nano-hematite facets. J Colloid Interface Sci 2019; 537:465-474. [DOI: 10.1016/j.jcis.2018.11.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 11/02/2018] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
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Xu Y, Tian X, Sun D, Sun Y, Gao D. α-Fe2
O3
Polyhedral Nanoparticles Enclosed by Different Crystal Facets: Tunable Synthesis, Formation Mechanism Analysis, and Facets-dependent n
-Butanol Sensing Properties. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800380] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yanyan Xu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of InorganicOrganic Hybrid Functional Material Chemistry; Tianjin Normal University; Tianjin P. R. China
| | - Xin Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of InorganicOrganic Hybrid Functional Material Chemistry; Tianjin Normal University; Tianjin P. R. China
| | - Dandan Sun
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of InorganicOrganic Hybrid Functional Material Chemistry; Tianjin Normal University; Tianjin P. R. China
| | - Yaqiu Sun
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of InorganicOrganic Hybrid Functional Material Chemistry; Tianjin Normal University; Tianjin P. R. China
| | - Dongzhao Gao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of InorganicOrganic Hybrid Functional Material Chemistry; Tianjin Normal University; Tianjin P. R. China
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Ma Y, Zhang L, Shi W, Niu Y, Zhang B, Su D. Facile-fabricated iron oxide nanorods as a catalyst for hydrogenation of nitrobenzene. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Xu Y, Cui X, Qi K, Wei S, Wang Q, Zheng W. Interface engineered surface morphology evolution of Au@Pd core-shell nanorods. NANOSCALE 2018; 10:21161-21167. [PMID: 30407474 DOI: 10.1039/c8nr06835f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Engineering the interfacial structure of bimetallic nanocrystals is an effective method to improve their electrocatalytic performances. Here, we design a facile strategy for controlling the surface morphology evolution of Au@Pd core-shell nanorods by adjusting the solution supersaturation. The Pd shell of the as-prepared Au@Pd bimetallic nanorods can be modulated from a (111) facet-exposed island to a (100) facet-exposed conformal shell. The conformal shell structure exhibited enhanced catalytic performance toward the ethanol oxidation reaction, while the core-island structure possessed better catalytic stability. This work provides a facile method for interfacial engineering of bimetallic nanocrystals with desired morphology and properties.
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Affiliation(s)
- Yanchao Xu
- State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE and Jilin University, Changchun, 130012, People's Republic of China.
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47
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Wu H, Yang T, Du Y, Shen L, Ho GW. Identification of Facet-Governing Reactivity in Hematite for Oxygen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804341. [PMID: 30387194 DOI: 10.1002/adma.201804341] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Unveiling the impact of a single parameter on the catalytic descriptor is fundamental to guide rational design principles for high-activity catalysts. Facets with distinct surface coordination that exhibit a central role in the kinetics modulation (reactivity) of surface electrochemistry, have remained elusive in oxygen evolution reactions (OERs). Here, the relationship between the predominant facets and catalytic reactivity is revealed, and it is recognized that facets decisively govern the oxygen evolution activity descriptor in hematite nanocrystals. Specifically, the hematite shows facet-dependent activity that follows the computed binding energy of surface-oxygenated intermediates. Moreover, a lower kinetics energy barrier is observed on a highly coordinated surface, both experimentally and computationally, in the light of molecular orbital principles. Consequently, a record-low overpotential and Tafel slope in iron oxides toward OER are manifested, competing against the benchmark binary transition metal oxide electrocatalysts and expelling the stereotype of the passive oxygen evolution activity of iron oxides. Significantly, the identification of facet-governing reactivity, construction of favorable facets, and strategic regulation of surface covalency enlighten design strategies for highly active catalysts.
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Affiliation(s)
- Hao Wu
- Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore
- Engineering Science Programme, National University of Singapore, 117575, Singapore
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 117602, Singapore
| | - Tong Yang
- Department of Physics, Faculty of Science, National University of Singapore, 117551, Singapore
| | - Yonghua Du
- Department of Mechanical Engineering, Engineering Science Programme, Faculty of Engineering, National University of Singapore, 117575, Singapore
| | - Lei Shen
- Department of Physics, Faculty of Science, National University of Singapore, 117551, Singapore
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore
- Engineering Science Programme, National University of Singapore, 117575, Singapore
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 117602, Singapore
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48
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Kim HS, Yang SM, Jang TM, Oh N, Kim HS, Hwang SW. Bioresorbable Silicon Nanomembranes and Iron Catalyst Nanoparticles for Flexible, Transient Electrochemical Dopamine Monitors. Adv Healthc Mater 2018; 7:e1801071. [PMID: 30450726 DOI: 10.1002/adhm.201801071] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/20/2018] [Indexed: 12/26/2022]
Abstract
A strategy of materials synthesis, characteristic evaluations, and manufacturing process for a mechanically elastic, biologically safe silicon-based dopamine detector that is designed to be completely transient, i.e., dissolved in water and/or biofluids, potentially in the brain after a desired period of operation, is introduced. Use of inexpensive, bioresorbable iron (Fe)-based nanoparticles (NPs) is one of the attractive choices for efficient catalytic oxidation of dopamine as an alternative for noble, nontransient platinum (Pt) nanoparticles, based on extensive studies of synthesized materials and catalytic reactions. Arrays of transient dopamine sensors validate electrochemical functionality to determine physiological levels of dopamine and to selectively sense dopamine in a variety of neurotransmitters, illuminating feasibilities for a higher level of soft, transient electronic implants integrated with other components of overall system.
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Affiliation(s)
- Hyun-Seung Kim
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea
| | - Seung Min Yang
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea
| | - Tae-Min Jang
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea
| | - Nuri Oh
- Division of Materials Science and Engineering; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul 04763 Republic of Korea
| | - Hee-Soo Kim
- Analytical Instrumentation Center; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul 04763 Republic of Korea
| | - Suk-Won Hwang
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea
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Zhang J, Li H, Kuang Q, Xie Z. Toward Rationally Designing Surface Structures of Micro- and Nanocrystallites: Role of Supersaturation. Acc Chem Res 2018; 51:2880-2887. [PMID: 30346701 DOI: 10.1021/acs.accounts.8b00344] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Tailoring the surface structures of nanocrystals is an exciting research area on account of appealing surface-dependent properties in various applications. Although significant progress has been made in recent years, current synthetic approaches are mainly dependent upon trial and error because of the ambiguous roles of various influencing factors in complicated environments. Therefore, a general theory for predicting and guiding the rationally controlled synthesis of micro- and nanocrystallites with specific surface structures is highly desired. Of note, previous research attention was mainly focused on the crystal growth in near equilibrium conditions. However, in supersaturated growth environments (nonequilibrium conditions), the corresponding crystal growth theories are still limited. Recently, the supersaturation-controlled surface structure strategy, which is derived from thermodynamics and the Thomson-Gibbs equation, has opened up a new avenue for the control the surface structures of crystals. This strategy involves manipulating the supersaturation of growth units to control the surface structure of micro- and nanocrystallites, as the surface energy of exposed facets is correlated to the supersaturation of growth blocks. Based on the proposed theory, micro- and nanocrystallites with various surface structures, especially high-energy facets, have been successfully synthesized by our group and other researchers in past years. In order to draw lessons from previous studies, it is imperative to give a timely research account related to the supersaturation strategy and corresponding applications in controlling surface structures of different crystallites. In this Account, we explore the supersaturation-controlled surface structure strategy to construct functional nanomaterials with desired architectures. First, we highlight the role of supersaturation of growth units from theoretical analysis after a short introduction of fundamental principles for crystal growth. Then, some detailed cases concerning evolution of surface structures are presented to highlight the key experimental factors involved in manipulating the supersaturation of growth units during synthetic processes. These factors include solvents, reaction rates, and additives in wet chemical routes as well as overpotential in electrochemical routes. In addition, we briefly discuss the role of supersaturation in growth kinetics with focus on explaining the formation of spherical micro- and nanocrystallites at extremely high supersaturation. Finally, a general summary of the supersaturation-dependent surface structure control and future prospects in this field are provided. It is expected that this Account will deepen the current understanding on fundamental principles behind the control of surface structures of micro- and nanocrystallites, which can help us to construct desirable nanomaterials and promote their practical applications.
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Affiliation(s)
- Jiawei Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Huiqi Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qin Kuang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhaoxiong Xie
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
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Zhu M, Dai Y, Wu Y, Liu K, Qi X, Sun Y. Bandgap control of α-Fe 2O 3 nanozymes and their superior visible light promoted peroxidase-like catalytic activity. NANOTECHNOLOGY 2018; 29:465704. [PMID: 30160242 DOI: 10.1088/1361-6528/aaddc2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Iron oxide nanoparticles (NPs) possessing peroxidase-like catalytic activity have been widely explored in recent decades, owing to their high stability against harsh conditions, low cost, flexibility in structure design and composition, adjustable activities and excellent biocompatibility in comparison with natural enzymes. Recently, a lot of great achievements have been made in this field of iron oxide nanozymes, however, this research has now reached a bottleneck in that the maximum activity enhancement is difficult to achieve via a material design. Hence, in this work, visible light was introduced to improve the peroxidase-like activity of Fe2O3 NPs synthesized via a combination of electrospinning technology and hydrothermal reaction. Our results showed that with the assistance of visible light, Fe2O3 NPs exhibited at least 2.2-fold higher peroxidase activity than those tested under darkness, confirming the superiorly visible light promoted peroxidase-like catalytic activity of Fe2O3 NPs. Furthermore, the affinity and maximum reaction velocity of Fe2O3 nanoflowers (bandgap = 1.78 eV) towards 3,3',5,5'-tetramethylbenanozymeidine (TMB) were at least over 3.7 and 4.3 times greater than in Fe2O3 nanocubes (bandgap = 2.08 eV), suggesting that the reaction performance of semiconductors could be controlled by proper adjustment of the bandgap. Moreover, the Fe2O3 NPs were also successfully utilized to detect glucose. Herein, we believe that the present work exhibits a fascinating perspective for peroxidase-like catalytic fields.
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Affiliation(s)
- Mingyun Zhu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, People's Republic of China
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