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Islam MT, Roni MNP, Ali MY, Islam MR, Hossan MS, Rahman MH, Zahid AASM, Alam MNE, Hanif MA, Akhtar MS. Selectivity of Sol-Gel and Hydrothermal TiO 2 Nanoparticles towards Photocatalytic Degradation of Cationic and Anionic Dyes. Molecules 2023; 28:6834. [PMID: 37836678 PMCID: PMC10574600 DOI: 10.3390/molecules28196834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Titanium dioxide (TiO2) nanoparticles have been extensively studied for catalyzing the photo-degradation of organic pollutants, the photocatalyst being nonselective to the substrate. We, however, found that TiO2 nanoparticles prepared via the sol-gel and hydrothermal synthetic routes each possess a definite specificity to the charge of the substrate for photodegradation. The nanoparticles were characterized by SEM, FTIR, XRD, TGA, and UV-visible spectra, and the photocatalytic degradation under UV-B (285 nm) irradiation of two model compounds, anionic methyl Orange (MO) and cationic methylene blue (MB) was monitored by a UV-visible spectrophotometer. Untreated sol-gel TiO2 nanoparticles (Tsg) preferentially degraded MO over MB (90% versus 40% in two hours), while after calcination at 400 °C for two hours (Tsgc) they showed reversed specificity (50% MO versus 90% MB in one hour). The as-prepared hydrothermal TiO2 nanoparticles (Tht) behaved in the opposite sense of Tsg (41% MO versus 91% MB degraded in one and a half hours); calcination at 400 °C (Thtc) did not reverse the trend but enhanced the efficiency of degradation. The study indicates that TiO2 nanoparticles can be made to degrade a specific class of organic pollutants from an effluent facilitating the recycling of a specific class of pollutants for cost-effective effluent management.
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Affiliation(s)
- Md. Torikul Islam
- Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh
| | | | - Md. Yunus Ali
- Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Md. Robiul Islam
- Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Md. Shamim Hossan
- Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - M. Habibur Rahman
- Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh
| | | | - Md. Nur E Alam
- Bangladesh Atomic Energy Commission, Dhaka 1207, Bangladesh
| | - Md. Abu Hanif
- Institute of Carbon Technology, Jeonju University, Jeonju 55069, Republic of Korea
| | - M. Shaheer Akhtar
- Graduate School of Integrated Energy-AI, Jeonbuk National University, Jeonju 54896, Republic of Korea
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2
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Li Z, Li Z, Zuo C, Fang X. Application of Nanostructured TiO 2 in UV Photodetectors: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109083. [PMID: 35061927 DOI: 10.1002/adma.202109083] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/16/2022] [Indexed: 06/14/2023]
Abstract
As a wide-bandgap semiconductor material, titanium dioxide (TiO2 ), which possesses three crystal polymorphs (i.e., rutile, anatase, and brookite), has gained tremendous attention as a cutting-edge material for application in the environment and energy fields. Based on the strong attractiveness from its advantages such as high stability, excellent photoelectric properties, and low-cost fabrication, the construction of high-performance photodetectors (PDs) based on TiO2 nanostructures is being extensively developed. An elaborate microtopography and device configuration is the most widely used strategy to achieve efficient TiO2 -based PDs with high photoelectric performances; however, a deep understanding of all the key parameters that influence the behavior of photon-generated carriers, is also highly required to achieve improved photoelectric performances, as well as their ultimate functional applications. Herein, an in-depth illustration of the electrical and optical properties of TiO2 nanostructures in addition to the advances in the technological issues such as preparation, microdefects, p-type doping, bandgap engineering, heterojunctions, and functional applications are presented. Finally, a future outlook for TiO2 -based PDs, particularly that of further functional applications is provided. This work will systematically illustrate the fundamentals of TiO2 and shed light on the preparation of more efficient TiO2 nanostructures and heterojunctions for future photoelectric applications.
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Affiliation(s)
- Ziliang Li
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Ziqing Li
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Chaolei Zuo
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Xiaosheng Fang
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
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3
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Adsorption and Mechanism of Glycine on the Anatase with Exposed (001) and (101) Facets. MINERALS 2022. [DOI: 10.3390/min12070798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
As a widely existing mineral types on Earth, semiconductor minerals play an important role in the origin of life and the material geochemical cycle. The first step of peptide formation is amino acid adsorption on the mineral surface, but the role and mechanism of different crystal facets of semiconductor minerals are not well understood. Anatase (TiO2) with exposed (001) facets was synthesized by a hydrothermal method, and then analyzed and compared with the purchased ordinary anatase (TiO2) for the adsorption of glycine, the simplest amino acid. XRD, SEM and TEM results show that the hydrothermally synthesized anatase (TiO2) has a good anatase crystal form, which is micro-nano-scale flake particles and mainly composed of (001) facets. The results of HPLC used in the adsorption experiment showed that under optimal conditions (pH 5 to 6, an adsorption time of 24 h, and an initial concentration of 0.09 mol/L), the adsorption quantity of glycine on anatase (TiO2) with exposed (001) facets may reach 10 mg/m2, which is larger than that for ordinary anatase (TiO2) with exposed (101) facets. Based on a combination of various characterizations and simulation calculations, the results proved that anatase can activate thermodynamically stable γ-glycine to β-glycine. The adsorption of glycine on anatase (TiO2) has two forms, one is the zwitterionic form in which the carboxyl group forms a bridge structure with two Ti atoms connected by surface bridging oxygen, and the dissociated form is in which the amino group forms a bond with the surface Ti atom. Among these, glycine is mainly adsorbed to anatase by dissociative molecules on the anatase (TiO2) with exposed (001) facets and by zwitterion adsorption on the anatase (TiO2) with exposed (101) facets. This research elucidates the conditions and mechanism of amino acid adsorption by semiconductor minerals in weak acidic environment, which is similar to the environmental pH that was beneficial to the formation of life on the early Earth. Therefore, these can provide a reference for the further study of the role of semiconductor minerals in the adsorption and polymerization of small biomolecules in the origin of life.
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4
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Pokratath R, Van den Eynden D, Cooper SR, Mathiesen JK, Waser V, Devereux M, Billinge SJL, Meuwly M, Jensen KMØ, De Roo J. Mechanistic Insight into the Precursor Chemistry of ZrO 2 and HfO 2 Nanocrystals; towards Size-Tunable Syntheses. JACS AU 2022; 2:827-838. [PMID: 35557760 PMCID: PMC9088301 DOI: 10.1021/jacsau.1c00568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 05/09/2023]
Abstract
One can nowadays readily generate monodisperse colloidal nanocrystals, but a retrosynthetic analysis is still not possible since the underlying chemistry is often poorly understood. Here, we provide insight into the reaction mechanism of colloidal zirconia and hafnia nanocrystals synthesized from metal chloride and metal isopropoxide. We identify the active precursor species in the reaction mixture through a combination of nuclear magnetic resonance spectroscopy (NMR), density functional theory (DFT) calculations, and pair distribution function (PDF) analysis. We gain insight into the interaction of the surfactant, tri-n-octylphosphine oxide (TOPO), and the different precursors. Interestingly, we identify a peculiar X-type ligand redistribution mechanism that can be steered by the relative amount of Lewis base (L-type). We further monitor how the reaction mixture decomposes using solution NMR and gas chromatography, and we find that ZrCl4 is formed as a by-product of the reaction, limiting the reaction yield. The reaction proceeds via two competing mechanisms: E1 elimination (dominating) and SN1 substitution (minor). Using this new mechanistic insight, we adapted the synthesis to optimize the yield and gain control over nanocrystal size. These insights will allow the rational design and synthesis of complex oxide nanocrystals.
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Affiliation(s)
- Rohan Pokratath
- Department
of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
| | - Dietger Van den Eynden
- Department
of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
| | - Susan Rudd Cooper
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Jette Katja Mathiesen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Valérie Waser
- Department
of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
| | - Mike Devereux
- Department
of Chemistry, University of Basel, Klingelbergstrasse 80, Basel 4056, Switzerland
| | - Simon J. L. Billinge
- Applied
Physics and Applied Mathematics Department, Columbia University, New York, New York 10027, United States
- Condensed
Matter Physics and Material Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Markus Meuwly
- Department
of Chemistry, University of Basel, Klingelbergstrasse 80, Basel 4056, Switzerland
| | - Kirsten M. Ø. Jensen
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Jonathan De Roo
- Department
of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
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5
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Van den Eynden D, Pokratath R, De Roo J. Nonaqueous Chemistry of Group 4 Oxo Clusters and Colloidal Metal Oxide Nanocrystals. Chem Rev 2022; 122:10538-10572. [PMID: 35467844 DOI: 10.1021/acs.chemrev.1c01008] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We review the nonaqueous precursor chemistry of the group 4 metals to gain insight into the formation of their oxo clusters and colloidal oxide nanocrystals. We first describe the properties and structures of titanium, zirconium, and hafnium oxides. Second, we introduce the different precursors that are used in the synthesis of oxo clusters and oxide nanocrystals. We review the structures of group 4 metal halides and alkoxides and their reactivity toward alcohols, carboxylic acids, etc. Third, we discuss fully condensed and atomically precise metal oxo clusters that could serve as nanocrystal models. By comparing the reaction conditions and reagents, we provide insight into the relationship between the cluster structure and the nature of the carboxylate capping ligands. We also briefly discuss the use of oxo clusters. Finally, we review the nonaqueous synthesis of group 4 oxide nanocrystals, including both surfactant-free and surfactant-assisted syntheses. We focus on their precursor chemistry and surface chemistry. By putting these results together, we connect the dots and obtain more insight into the fascinating chemistry of the group 4 metals. At the same time, we also identify gaps in our knowledge and thus areas for future research.
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Affiliation(s)
- Dietger Van den Eynden
- Department of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
| | - Rohan Pokratath
- Department of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
| | - Jonathan De Roo
- Department of Chemistry, University of Basel, Mattenstrasse 24, BPR 1096, Basel 4058, Switzerland
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6
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Synthesis and Characterization of Anatase TiO2 Nanorods: Insights from Nanorods’ Formation and Self-Assembly. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031614] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Highly crystalline, organic-solvent-dispersible titanium dioxide (TiO2) nanorods (NRs) present promising chemicophysical properties in many diverse applications. In this paper, based on a modified procedure from literature, TiO2 NRs were synthesized via a ligand-assisted nonhydrolytic sol-gel route using oleic acid as the solvent, reagent, and ligand and titanium (IV) isopropoxide as the titanium precursor. This procedure produced monodisperse TiO2 NRs, as well as some semi-spherical titania nanocrystals (NCs) that could be removed by size-selective precipitation. X-ray diffraction and selected area electron diffraction results showed that the nanorods were anatase, while the semipheres also contained the TiO2(B) phase. By taking samples during the particle growth, it was found that the average length of the initially grown NRs decreased during the synthesis. Possible reasons for this unusual growth path, partially based on high-resolution transmission electron microscopy (HRTEM) observations during the growth, were discussed. The dispersion of anatase TiO2 nanorods was capable of spontaneous formation of lyotropic liquid crystals on the TEM grid and in bulk. Considering high colloidal stability together with the large optical birefringence displayed by these high refractive index liquid crystalline domains, we believe these TiO2 NRs dispersions are promising candidates for application in transparent and switchable optics.
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7
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Sharma V, Choudhary S, Mankotia P, Kumari A, Sharma K, Sehgal R, Kumar V. Nanoparticles as fingermark sensors. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116378] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Liu Y, Zou X, Li L, Shen Z, Cao Y, Wang Y, Cui L, Cheng J, Wang Y, Li X. Engineering of anatase/rutile TiO 2 heterophase junction via in-situ phase transformation for enhanced photocatalytic hydrogen evolution. J Colloid Interface Sci 2021; 599:795-804. [PMID: 33989932 DOI: 10.1016/j.jcis.2021.04.127] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 11/15/2022]
Abstract
Constructing effective interphase boundary is one of the efficient approaches for improving photocatalytic performances of semiconductor materials. In this work, an anatase/rutile-TiO2 (AR-TiO2) heterophase junction with appropriate carbon content was successfully fabricated via an in-situ phase transformation process. The phase transformation started from the inner core of the nanoparticles and the area of phase interface between anatase and rutile was carefully controlled by regulating the activation temperature. The well-established type-II band alignment between two TiO2 phases with residual carbon as additional charge transfer intermediary which significantly improved the light-harvesting and photoinduced electron-hole pair separation. As a result, the optimal AR-TiO2-550 catalyst (without adding commonly used Pt as co-catalyst) remarkably enhanced photocatalytic H2 generation (201 μmol h-1 g-1), which was about 12-fold to that of P25. The AR-TiO2-550 heterophase junction also showed long-term stability under simulated solar light irradiation. This research provides a new phase engineering route for developing high-efficient photocatalysts.
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Affiliation(s)
- Yanan Liu
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Xuhui Zou
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Lifen Li
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Zhangfeng Shen
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yongyong Cao
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yanqin Wang
- Lab for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Lifeng Cui
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jun Cheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Yangang Wang
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Xi Li
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China.
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9
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Ang ECX, Tan CH. Golden Jubilee of Singapore National Institute of Chemistry (1970-2020): Celebrating its Partnership with Wiley-VCH. Angew Chem Int Ed Engl 2020; 59:19728-19731. [PMID: 32812317 DOI: 10.1002/anie.202002227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Indexed: 11/08/2022]
Abstract
This year Singapore National Institute of Chemistry (SNIC) is celebrating its golden jubilee (1970-2020). Wiley-VCH has been a steadfast partner accompanying the rapid rise of chemistry research in Singapore. In celebration of this golden jubilee, we highlight 50 significant papers published in Angewandte Chemie by scholars currently based in Singapore, covering the widest possible spectrum of chemistry research.
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Affiliation(s)
- Esther Cai Xia Ang
- Singapore National Institute of Chemistry, SPMS-CBC-04-18.5, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Choon-Hong Tan
- Singapore National Institute of Chemistry, SPMS-CBC-04-18.5, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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10
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Ang ECX, Tan C. Golden Jubilee of Singapore National Institute of Chemistry (1970–2020): Celebrating its Partnership with Wiley‐VCH. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Esther Cai Xia Ang
- Singapore National Institute of Chemistry SPMS-CBC-04-18.5 School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Choon‐Hong Tan
- Singapore National Institute of Chemistry SPMS-CBC-04-18.5 School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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11
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Solvothermal Synthesis of Mesoporous TiO2 Using Sodium Dodecyl Sulfate for Photocatalytic Degradation of Methylene Blue. Top Catal 2020. [DOI: 10.1007/s11244-020-01322-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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PbS Quantum Dots Decorating TiO 2 Nanocrystals: Synthesis, Topology, and Optical Properties of the Colloidal Hybrid Architecture. Molecules 2020; 25:molecules25122939. [PMID: 32604749 PMCID: PMC7356616 DOI: 10.3390/molecules25122939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/24/2020] [Accepted: 06/24/2020] [Indexed: 11/17/2022] Open
Abstract
Fabrication of heterostructures by merging two or more materials in a single object. The domains at the nanoscale represent a viable strategy to purposely address materials’ properties for applications in several fields such as catalysis, biomedicine, and energy conversion. In this case, solution-phase seeded growth and the hot-injection method are ingeniously combined to fabricate TiO2/PbS heterostructures. The interest in such hybrid nanostructures arises from their absorption properties that make them advantageous candidates as solar cell materials for more efficient solar light harvesting and improved light conversion. Due to the strong lattice mismatch between TiO2 and PbS, the yield of the hybrid structure and the control over its properties are challenging. In this study, a systematic investigation of the heterostructure synthesis as a function of the experimental conditions (such as seeds’ surface chemistry, reaction temperature, and precursor concentration), its topology, structural properties, and optical properties are carried out. The morphological and chemical characterizations confirm the formation of small dots of PbS by decorating the oleylamine surface capped TiO2 nanocrystals under temperature control. Remarkably, structural characterization points out that the formation of heterostructures is accompanied by modification of the crystallinity of the TiO2 domain, which is mainly ascribed to lattice distortion. This result is also confirmed by photoluminescence spectroscopy, which shows intense emission in the visible range. This originated from self-trapped excitons, defects, and trap emissive states.
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13
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Lin J, Li P, Xu H, Kim Y, Jing Z, Zheng D. Controlled synthesis of mesoporous single-crystalline TiO 2 nanoparticles for efficient photocatalytic H 2 evolution. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122530. [PMID: 32247703 DOI: 10.1016/j.jhazmat.2020.122530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/06/2020] [Accepted: 03/11/2020] [Indexed: 06/11/2023]
Abstract
Mesoporous single-crystals have emerged as a unique family of functional materials, exhibiting excellent performance in various applications, owing to their well-defined accessible mesoporosity and highly single-crystalline structures. Precise tailoring structures of mesoporous single-crystals at the nanoscale remains an unsolved scientific and technical challenge. Herein, we report a facile and general approach for the synthesis of mesoporous single-crystalline TiO2 nanoparticles (designated as MSC-TNs) with distinctive traits including tunable morphologies, controllable particle sizes, well dispersity, high hydrophilicity, well-defined mesoporosity and single-crystal nature. Specifically, the amount of water employed in the precursor solution was seen to give fine control over the particle sizes and morphologies of MSC-TNs. MSC-TNs with different sizes show excellent photocatalytic activity in production of hydrogen from water. Under the illumination of 300 W Xe lamp, MSC-TNs were shown to provide good photodegradation performance with Rhodamine 6 G, as well as H2 production when loaded 1 wt % Pt. In a CH3OH solution H2 was evolved with a rate of 8.98 mmol h-1 g-1, which is significantly higher than with commercial P25 nanoparticles (4.02 mmol h-1 g-1).
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Affiliation(s)
- Jianjian Lin
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Ping Li
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Huizhong Xu
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Yena Kim
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Zhongxin Jing
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Dehua Zheng
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, PR China.
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14
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Yin H, Kuwahara Y, Mori K, Louis C, Yamashita H. Properties, fabrication and applications of plasmonic semiconductor nanocrystals. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02511a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We highlight three widely explored oxide-based plasmonic materials, including HxMoO3−y, HxWO3−y, and MoxW1−xO3−y, and their applications in catalysis.
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Affiliation(s)
- Haibo Yin
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
| | - Catherine Louis
- Sorbonne Universités
- UPMC Univ Paris 06, UMR CNRS 7197
- Laboratoire de Réactivité de Surface
- F-75252 Paris
- France
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Osaka
- Japan
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15
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Diethylene Glycol-Assisted Organized TiO2 Nanostructures for Photocatalytic Wastewater Treatment Ceramic Membranes. WATER 2019. [DOI: 10.3390/w11040750] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A high-performance photocatalytic ceramic membrane was developed by direct growth of a TiO2 structure on a macroporous alumina support using a hydrothermal method. The morphological nanostructure of TiO2 on the support was successfully controlled via the interaction between the TiO2 precursor and a capping agent, diethylene glycol (DEG). The growth of anatase TiO2 nanorods was observed both on the membrane surface and pore walls. The well-organized nanorods TiO2 reduced the perturbation of the alumina support, thus controlling the hydrolysis rate of the TiO2 precursor and reducing membrane fouling. However, a decrease in the amount of the DEG capping agent significantly reduced membrane permeability, owing to the formation of nonporous clusters of TiO2 on the support. Distribution of the organized TiO2 nanorods on the support was very effective for the improvement of the organic removal efficiency and antifouling under ultraviolet illumination. The TiO2 nanostructure associated with the reactive crystalline phase, rather than the amount of layered TiO2 formed on the support, which was found to be the key to controlling photocatalytic membrane reactivity. These experimental findings would provide a new approach for the development of efficacious photocatalytic membranes with improved performance for wastewater treatment.
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16
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Heuer-Jungemann A, Feliu N, Bakaimi I, Hamaly M, Alkilany A, Chakraborty I, Masood A, Casula MF, Kostopoulou A, Oh E, Susumu K, Stewart MH, Medintz IL, Stratakis E, Parak WJ, Kanaras AG. The Role of Ligands in the Chemical Synthesis and Applications of Inorganic Nanoparticles. Chem Rev 2019; 119:4819-4880. [PMID: 30920815 DOI: 10.1021/acs.chemrev.8b00733] [Citation(s) in RCA: 439] [Impact Index Per Article: 87.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The design of nanoparticles is critical for their efficient use in many applications ranging from biomedicine to sensing and energy. While shape and size are responsible for the properties of the inorganic nanoparticle core, the choice of ligands is of utmost importance for the colloidal stability and function of the nanoparticles. Moreover, the selection of ligands employed in nanoparticle synthesis can determine their final size and shape. Ligands added after nanoparticle synthesis infer both new properties as well as provide enhanced colloidal stability. In this article, we provide a comprehensive review on the role of the ligands with respect to the nanoparticle morphology, stability, and function. We analyze the interaction of nanoparticle surface and ligands with different chemical groups, the types of bonding, the final dispersibility of ligand-coated nanoparticles in complex media, their reactivity, and their performance in biomedicine, photodetectors, photovoltaic devices, light-emitting devices, sensors, memory devices, thermoelectric applications, and catalysis.
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Affiliation(s)
- Amelie Heuer-Jungemann
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences , University of Southampton , Southampton SO17 1BJ , U.K
| | - Neus Feliu
- Department of Laboratory Medicine (LABMED) , Karolinska Institutet , Stockholm 171 77 , Sweden.,Fachbereich Physik, CHyN , Universität Hamburg , 22607 Hamburg , Germany
| | - Ioanna Bakaimi
- School of Chemistry, Faculty of Engineering and Physical Sciences , University of Southampton , Southampton SO171BJ , U.K
| | - Majd Hamaly
- King Hussein Cancer Center , P. O. Box 1269, Al-Jubeiha, Amman 11941 , Jordan
| | - Alaaldin Alkilany
- Department of Pharmaceutics & Pharmaceutical Technology, School of Pharmacy , The University of Jordan , Amman 11942 , Jordan.,Fachbereich Physik, CHyN , Universität Hamburg , 22607 Hamburg , Germany
| | | | - Atif Masood
- Fachbereich Physik , Philipps Universität Marburg , 30357 Marburg , Germany
| | - Maria F Casula
- INSTM and Department of Chemical and Geological Sciences , University of Cagliari , 09042 Monserrato , Cagliari , Italy.,Department of Mechanical, Chemical and Materials Engineering , University of Cagliari , Via Marengo 2 , 09123 Cagliari , Italy
| | - Athanasia Kostopoulou
- Institute of Electronic Structure and Laser , Foundation for Research and Technology-Hellas , Heraklion , 71110 Crete , Greece
| | - Eunkeu Oh
- KeyW Corporation , Hanover , Maryland 21076 , United States.,Optical Sciences Division, Code 5600 , U.S. Naval Research Laboratory , Washington , D.C. 20375 , United States
| | - Kimihiro Susumu
- KeyW Corporation , Hanover , Maryland 21076 , United States.,Optical Sciences Division, Code 5600 , U.S. Naval Research Laboratory , Washington , D.C. 20375 , United States
| | - Michael H Stewart
- Optical Sciences Division, Code 5600 , U.S. Naval Research Laboratory , Washington , D.C. 20375 , United States
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900 , U.S. Naval Research Laboratory , Washington , D.C. 20375 , United States
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser , Foundation for Research and Technology-Hellas , Heraklion , 71110 Crete , Greece
| | - Wolfgang J Parak
- Fachbereich Physik, CHyN , Universität Hamburg , 22607 Hamburg , Germany
| | - Antonios G Kanaras
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences , University of Southampton , Southampton SO17 1BJ , U.K
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17
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Masi S, Mastria R, Scarfiello R, Carallo S, Nobile C, Gambino S, Sibillano T, Giannini C, Colella S, Listorti A, Cozzoli PD, Rizzo A. Room-temperature processed films of colloidal carved rod-shaped nanocrystals of reduced tungsten oxide as interlayers for perovskite solar cells. Phys Chem Chem Phys 2018; 20:11396-11404. [PMID: 29645032 DOI: 10.1039/c8cp00645h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thanks to their high stability, good optoelectronic and extraordinary electrochromic properties, tungsten oxides are among the most valuable yet underexploited materials for energy conversion applications. Herein, colloidal one-dimensional carved nanocrystals of reduced tungsten trioxide (WO3-x) are successfully integrated, for the first time, as a hole-transporting layer (HTL) into CH3NH3PbI3 perovskite solar cells with a planar inverted device architecture. Importantly, the use of such preformed nanocrystals guarantees the facile solution-cast-only deposition of a homogeneous WO3-x thin film at room temperature, allowing achievement of the highest power conversion efficiency ever reported for perovskite solar cells incorporating raw and un-doped tungsten oxide based HTL.
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Affiliation(s)
- Sofia Masi
- CNR NANOTEC - Institute of Nanotechnology, Polo di Nanotecnologia, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
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18
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Li J, Wang H, Lin L, Fang Q, Peng X. Quantitative Identification of Basic Growth Channels for Formation of Monodisperse Nanocrystals. J Am Chem Soc 2018; 140:5474-5484. [DOI: 10.1021/jacs.8b01296] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jiongzhao Li
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Huifeng Wang
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Long Lin
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Qun Fang
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xiaogang Peng
- Center for Chemistry of Novel & High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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19
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Agrawal A, Cho SH, Zandi O, Ghosh S, Johns RW, Milliron DJ. Localized Surface Plasmon Resonance in Semiconductor Nanocrystals. Chem Rev 2018; 118:3121-3207. [PMID: 29400955 DOI: 10.1021/acs.chemrev.7b00613] [Citation(s) in RCA: 271] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Localized surface plasmon resonance (LSPR) in semiconductor nanocrystals (NCs) that results in resonant absorption, scattering, and near field enhancement around the NC can be tuned across a wide optical spectral range from visible to far-infrared by synthetically varying doping level, and post synthetically via chemical oxidation and reduction, photochemical control, and electrochemical control. In this review, we will discuss the fundamental electromagnetic dynamics governing light matter interaction in plasmonic semiconductor NCs and the realization of various distinctive physical properties made possible by the advancement of colloidal synthesis routes to such NCs. Here, we will illustrate how free carrier dielectric properties are induced in various semiconductor materials including metal oxides, metal chalcogenides, metal nitrides, silicon, and other materials. We will highlight the applicability and limitations of the Drude model as applied to semiconductors considering the complex band structures and crystal structures that predominate and quantum effects that emerge at nonclassical sizes. We will also emphasize the impact of dopant hybridization with bands of the host lattice as well as the interplay of shape and crystal structure in determining the LSPR characteristics of semiconductor NCs. To illustrate the discussion regarding both physical and synthetic aspects of LSPR-active NCs, we will focus on metal oxides with substantial consideration also of copper chalcogenide NCs, with select examples drawn from the literature on other doped semiconductor materials. Furthermore, we will discuss the promise that LSPR in doped semiconductor NCs holds for a wide range of applications such as infrared spectroscopy, energy-saving technologies like smart windows and waste heat management, biomedical applications including therapy and imaging, and optical applications like two photon upconversion, enhanced luminesence, and infrared metasurfaces.
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Affiliation(s)
- Ankit Agrawal
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Shin Hum Cho
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Omid Zandi
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Sandeep Ghosh
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Robert W Johns
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States.,Department of Chemistry , University of California Berkeley , Berkeley , California 94720 , United States
| | - Delia J Milliron
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
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20
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Biswas A, Chakraborty A, Jana NR. Nitrogen and Fluorine Codoped, Colloidal TiO 2 Nanoparticle: Tunable Doping, Large Red-Shifted Band Edge, Visible Light Induced Photocatalysis, and Cell Death. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1976-1986. [PMID: 29257666 DOI: 10.1021/acsami.7b14025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Visible light photocatalysis by TiO2 requires efficient doping of other elements with red-shifted band edge to the visible region. However, preparation of such TiO2 with tunable doping is challenging. Here we report a method of making nitrogen (N) and fluorine (F) codoped TiO2 nanoparticle with tunable doping between 1 and 7 at. %. The preparation of N, F codoped TiO2 nanoparticle involves reaction of colloidal TiO2 nanorods with an ammonium fluoride-urea mixture at 300 °C, and the extent of N/F doping is tuned by varying the amount of ammonium fluoride-urea and the reaction time. Resultant colloidal N, F codoped TiO2 nanoparticles show doping dependent shifting of the band edge from the UV to near-IR region, visible light induced generation of reactive oxygen species (ROS), and visible light photodegradation of bisphenol A. A colloidal form of doped TiO2 nanoparticle offers labeling of cells, visible light induced ROS generation inside a cell, and successive cell death. This work shows the potential advantage of anisotropic nanoparticle precursor for tunable doping and colloidal form of N, F codoped TiO2 nanoparticle as a visible light photocatalyst.
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Affiliation(s)
- Aritra Biswas
- Centre for Advanced Materials, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Atanu Chakraborty
- Centre for Advanced Materials, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Nikhil R Jana
- Centre for Advanced Materials, Indian Association for the Cultivation of Science , Kolkata 700032, India
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21
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Suzuki M, Tanaka K, Kato Y, Hanabusa K. Metal Oxide/TiO₂ Hybrid Nanotubes Fabricated through the Organogel Route. Gels 2017; 3:E24. [PMID: 30920521 PMCID: PMC6318635 DOI: 10.3390/gels3030024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 06/20/2017] [Accepted: 06/20/2017] [Indexed: 12/14/2022] Open
Abstract
Titanium dioxide (TiO₂) nanotube and its hybrid nanotubes (with various metal oxides such as Ta₂O₅, Nb₂O₅, ZrO2, and SiO₂) were fabricated by the sol-gel polymerization in the ethanol gels formed by simple l-lysine-based organogelator. The self-assembled nanofibers (gel fibers) formed by the gelator functioned as a template. The different calcination temperatures gave TiO₂ nanotubes with various crystalline structures; e.g., anatase TiO₂ nanotube was obtained by calcination at 600 °C, and rutile TiO₂ nanotube was fabricated at a calcination temperature of 750 °C. In the metal oxide/TiO₂ hybrid nanotubes, the metal oxide species were uniformly dispersed in the TiO₂ nanotube, and the percent content of metal oxide species was found to correspond closely to the feed ratio of the raw materials. This result indicated that the composition ratio of hybrid nanotubes was controllable by the feed ratio of the raw materials. It was found that the metal oxide species inhibited the crystalline phase transition of TiO₂ from anatase to rutile. Furthermore, the success of the hybridization of other metal oxides (except for TiO₂) indicated the usefulness of the organogel route as one of the fabrication methods of metal oxide nanotubes.
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Affiliation(s)
- Masahiro Suzuki
- Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan.
| | - Keita Tanaka
- Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan.
| | - Yukie Kato
- Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan.
| | - Kenji Hanabusa
- Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan.
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22
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Qiao L, Swihart MT. Solution-phase synthesis of transition metal oxide nanocrystals: Morphologies, formulae, and mechanisms. Adv Colloid Interface Sci 2017; 244:199-266. [PMID: 27246718 DOI: 10.1016/j.cis.2016.01.005] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 01/13/2016] [Accepted: 01/20/2016] [Indexed: 12/26/2022]
Abstract
In this review, we provide a broad overview of solution-phase synthesis of transition metal oxide nanocrystals (NCs), including a substantial catalog of published methods, and a unifying classification and discussion. Prevalent subcategories of solution-phase synthesis are delineated and general features are summarized. The diverse morphologies achievable by solution-phase synthesis are defined and exemplified. This is followed by sequential consideration of the solution-phase synthesis of first-row transition metal oxides. The common oxides of Ti, V, Mn, Fe, Co, Ni, Cu, and Zn are introduced; major crystal lattices are presented and illustrated; representative examples are explained; and numerous synthesis formulae are tabulated. Following this presentation of experimental studies, we present an introduction to theories of NC nucleation and growth. Various models of NC nucleation and growth are addressed, and important concepts determining the growth and structure of colloidal NCs are explained. Overall, this review provides an entry into systematic understanding of solution-phase synthesis of nanocrystals, with a reasonably comprehensive survey of results for the important category of transition metal oxide NCs.
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Affiliation(s)
- Liang Qiao
- Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, NY 14260-4200, USA
| | - Mark T Swihart
- Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, NY 14260-4200, USA.
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23
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Deshmukh R, Niederberger M. Mechanistic Aspects in the Formation, Growth and Surface Functionalization of Metal Oxide Nanoparticles in Organic Solvents. Chemistry 2017; 23:8542-8570. [DOI: 10.1002/chem.201605957] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Rupali Deshmukh
- Laboratory for Multifunctional Materials, Department of Materials; ETH Zürich; Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Markus Niederberger
- Laboratory for Multifunctional Materials, Department of Materials; ETH Zürich; Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
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24
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Zhang M, Lei J, Shi Y, Zhang L, Ye Y, Li D, Mu C. Molecular weight effects of PEG on the crystal structure and photocatalytic activities of PEG-capped TiO2 nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra12988a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The increasing molecular weight of PEG can increase the water dispersion but decrease the photocatalytic activity of PEG-capped TiO2.
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Affiliation(s)
- Meizhou Zhang
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jinfeng Lei
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yifeng Shi
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lina Zhang
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Youxin Ye
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Defu Li
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Changdao Mu
- Department of Pharmaceutics and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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25
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Zhang Y, Liu FM. Self-assembly of three shapes of anatase TiO2 nanocrystals into horizontal and vertical two-dimensional superlattices. RSC Adv 2015. [DOI: 10.1039/c5ra12338k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bone-cuboid (a and b), spindle (c and d) and rhombic (e and f) TiO2 nanocrystals are all self-assembled into horizontal and vertical ordered two-dimensional superlattices.
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Affiliation(s)
- Yong Zhang
- Department of Physics
- School of Physics and Nuclear Energy Engineering
- Beihang University
- Beijing 100191
- China
| | - Fa-Min Liu
- Department of Physics
- School of Physics and Nuclear Energy Engineering
- Beihang University
- Beijing 100191
- China
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26
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Jiang X, Wang F, Li G, Qi L, Liu P, Ding Y, Zhang S, Yang M. Low temperature synthesis and mechanism of finely dispersed nanorod rutile titanium dioxide. RSC Adv 2015. [DOI: 10.1039/c5ra10399a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A possible mechanism was proposed to illustrate how the phase of TiO2could be well controlled with different acids.
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Affiliation(s)
- Xinwei Jiang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Feng Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Gen Li
- Department of Materials Science & Engineering
- Beijing Institute of Fashion Technology
- Beijing
- China
| | - Lin Qi
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Peng Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yanfen Ding
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Shimin Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Mingshu Yang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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27
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Tan Z, Sato K, Ohara S. Synthesis of layered nanostructured TiO2 by hydrothermal method. ADV POWDER TECHNOL 2015. [DOI: 10.1016/j.apt.2014.10.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Wang X, Li Z, Shi J, Yu Y. One-Dimensional Titanium Dioxide Nanomaterials: Nanowires, Nanorods, and Nanobelts. Chem Rev 2014. [DOI: 10.1021/cr400633s https:/doi.org/10.1021/cr400633s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Xudong Wang
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zhaodong Li
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Jian Shi
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Yanhao Yu
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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29
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Luo S, Feng J, Ng KM. Large scale synthesis of nearly monodisperse, variable-shaped In2O3nanocrystals via a one-pot pyrolysis reaction. CrystEngComm 2014. [DOI: 10.1039/c4ce01223b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Jana S, Majumder T, Banerjee S. Enhanced photoelectrochemical property of gold nanoparticle sensitized TiO2 nanotube: A crucial investigation at electrode–electrolyte interface. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Cui F, Xu L, Cui T, Yao T, Yu J, Zhang X, Sun K. Facile synthesis of ultrasmall TiO2nanocrystals/porous carbon composites in large quantity and their photocatalytic performance under visible light. RSC Adv 2014. [DOI: 10.1039/c4ra05556j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Cargnello M, Gordon TR, Murray CB. Solution-Phase Synthesis of Titanium Dioxide Nanoparticles and Nanocrystals. Chem Rev 2014; 114:9319-45. [DOI: 10.1021/cr500170p] [Citation(s) in RCA: 294] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Matteo Cargnello
- Department of Chemistry and ‡Department of
Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Thomas R. Gordon
- Department of Chemistry and ‡Department of
Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher B. Murray
- Department of Chemistry and ‡Department of
Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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33
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Liang X, Yi Q, Bai S, Dai X, Wang X, Ye Z, Gao F, Zhang F, Sun B, Jin Y. Synthesis of unstable colloidal inorganic nanocrystals through the introduction of a protecting ligand. NANO LETTERS 2014; 14:3117-3123. [PMID: 24821526 DOI: 10.1021/nl501763z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate a facile and general strategy based on ligand protection for the synthesis of unstable colloidal nanocrystals by using the synthesis of pure p-type NiO nanocrystals as an example. We find that the introduction of lithium stearate, which is stable in the reaction system and capable of binding to the surface of NiO oxide nanocrystals, can effectively suppress the reactivity of NiO nanocrystals and thus prevent their in situ reduction into Ni. The resulting p-type NiO nanocrystals, a highly demanded hole-transporting and electron-blocking material, are applied to the fabrication of organic solar cells and polymer light-emitting diodes, demonstrating their great potential as an interfacial layer for low-cost and large-area, solution-processed optoelectronic devices.
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Affiliation(s)
- Xiaoyong Liang
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Department of Materials Science and Engineering and ‡Center for Chemistry of High-Performance and Novel Materials, Zhejiang University , Hangzhou 310027, People's Republic of China
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34
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Synthetic versatility of nanoparticles: A new, rapid, one-pot, single-step synthetic approach to spherical mesoporous (metal) oxide nanoparticles using supercritical alcohols. PURE APPL CHEM 2014. [DOI: 10.1515/pac-2013-1117] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AbstractA simple, rapid (10 min), one-pot, single-step method for the preparation of solid and hollow spherical porous TiO2 nanoparticles with large surface areas (100–211 m2/g) was developed in supercritical alcohols using carboxylic acids as organic additives. The shell thickness of the hollow TiO2 nanoparticles (20–280 nm) was controlled by adjusting the heating rate (2.0–10.0 °C/min). The preparation of different spherical porous metal oxide nanoparticles, including CeO2, SiO2, TiO2, ZrO2, and ZnO, demonstrated the versatility of the synthetic approach. In addition, several rare earth-doped spherical mesoporous metal oxide nanoparticles, including CeO2:Er, CeO2:Er,Yb, ZrO2:Er, and TiO2:Er, which exhibit energy upconversion emission, were successfully prepared using this one-pot, single-step, supercritical methanol method. The obtained spherical mesoporous CeO2:Er and CeO2:Er,Yb nanoparticles emit green light upon excitation, even when irradiated with a low-power IR laser (980 nm, 10 mW) without calcination. Several other (metal) elements were also easily doped into spherical, mesoporous TiO2 nanoparticles, such as Eu, Ce, Yb, Fe, and N, using a similar procedure. Furthermore, the spherical mesoporous TiO2 nanoparticles were successfully applied as a new material for the transport of DNA via biolistic bombardment.
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35
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Wang X, Li Z, Shi J, Yu Y. One-Dimensional Titanium Dioxide Nanomaterials: Nanowires, Nanorods, and Nanobelts. Chem Rev 2014; 114:9346-84. [DOI: 10.1021/cr400633s] [Citation(s) in RCA: 530] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xudong Wang
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zhaodong Li
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Jian Shi
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Yanhao Yu
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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36
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Affiliation(s)
- Xudong Wang
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zhaodong Li
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Jian Shi
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Yanhao Yu
- Department of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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37
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A quantitative study of chemical kinetics for the synthesis of doped oxide nanocrystals using FTIR. Sci Rep 2014; 4:4353. [PMID: 24619066 PMCID: PMC3950640 DOI: 10.1038/srep04353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 02/21/2014] [Indexed: 11/09/2022] Open
Abstract
The synthesis of Mg-doped ZnO nanocrystals was employed as a model system to quantitatively study the chemical kinetics of the precursor conversion reactions at synthetic conditions and the correlations with the formation of doped nanocrystals. An accurate method using Fourier transform infrared spectroscopy was developed to explore the alcoholysis reactions of the cationic precursors. Our study showed that three independent factors, molar ratio of dopant precursor, reaction temperature and coordination ligands of cationic precursors influenced the relative reactivity of magnesium to zinc precursor, and in turn the formation of Mg-doped ZnO nanocrystals with defined shapes and properties. This understanding underpins the advancement of the syntheses of doped nanocrystals and should be useful for future rational design of new synthetic systems.
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38
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Ong WJ, Tan LL, Chai SP, Yong ST, Mohamed AR. Highly reactive {001} facets of TiO2-based composites: synthesis, formation mechanism and characterization. NANOSCALE 2014; 6:1946-2008. [PMID: 24384624 DOI: 10.1039/c3nr04655a] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Titanium dioxide (TiO2) is one of the most widely investigated metal oxides due to its extraordinary surface, electronic and catalytic properties. However, the large band gap of TiO2 and massive recombination of photogenerated electron-hole pairs limit its photocatalytic and photovoltaic efficiency. Therefore, increasing research attention is now being directed towards engineering the surface structure of TiO2 at the most fundamental and atomic level namely morphological control of {001} facets in the range of microscale and nanoscale to fine-tune its physicochemical properties, which could ultimately lead to the optimization of its selectivity and reactivity. The synthesis of {001}-faceted TiO2 is currently one of the most active interdisciplinary research areas and demonstrations of catalytic enhancement are abundant. Modifications such as metal and non-metal doping have also been extensively studied to extend its band gap to the visible light region. This steady progress has demonstrated that TiO2-based composites with {001} facets are playing and will continue to play an indispensable role in the environmental remediation and in the search for clean and renewable energy technologies. This review encompasses the state-of-the-art research activities and latest advancements in the design of highly reactive {001} facet-dominated TiO2via various strategies, including hydrothermal/solvothermal, high temperature gas phase reactions and non-hydrolytic alcoholysis methods. The stabilization of {001} facets using fluorine-containing species and fluorine-free capping agents is also critically discussed in this review. To overcome the large band gap of TiO2 and rapid recombination of photogenerated charge carriers, modifications are carried out to manipulate its electronic band structure, including transition metal doping, noble metal doping, non-metal doping and incorporating graphene as a two-dimensional (2D) catalyst support. The advancements made in these aspects are thoroughly examined, with additional insights related to the charge transfer events for each strategy of the modified-TiO2 composites. Finally, we offer a summary and some invigorating perspectives on the major challenges and new research directions for future exploitation in this emerging frontier, which we hope will advance us to rationally harness the outstanding structural and electronic properties of {001} facets for various environmental and energy-related applications.
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Affiliation(s)
- Wee-Jun Ong
- Low Carbon Economy (LCE) Group, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 46150, Selangor, Malaysia.
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Hong Z, Dai H, Huang Z, Wei M. Understanding the growth and photoelectrochemical properties of mesocrystals and single crystals: a case of anatase TiO2. Phys Chem Chem Phys 2014; 16:7441-7. [DOI: 10.1039/c4cp00718b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anatase TiO2 mesocrystals demonstrate much enhanced photocurrent compared with that of TiO2 single crystals and P25.
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Affiliation(s)
- Zhensheng Hong
- College of Physics and Energy
- Fujian Normal University
- Fuzhou, China
| | - Hong Dai
- College of Chemistry and Chemical Engineering
- Fujian Normal University
- Fuzhou, China
| | - Zhigao Huang
- College of Physics and Energy
- Fujian Normal University
- Fuzhou, China
| | - Mingdeng Wei
- Institute of Advanced Energy Materials
- Fuzhou University
- Fuzhou, China
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Senthilraja A, Krishnakumar B, Swaminathan M, Nagarajan S. Self-assembly, photophysical and electrochemical properties and activation of the TiO2 photocatalyst by perylene bisimide. NEW J CHEM 2014. [DOI: 10.1039/c3nj01356a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DPBI exists as highly fluorescent molecular wires and DPBI loaded TiO2 is more efficient in RO4 photodegradation.
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Affiliation(s)
| | - Balu Krishnakumar
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | | | - Samuthira Nagarajan
- Department of Chemistry
- Central University of Tamil Nadu
- Thiruvarur 601 101, India
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41
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Luo L, Wang PP, Jing D, Wang X. Self-assembly of TiO2 nanoparticles into chains, films and honeycomb networks. CrystEngComm 2014. [DOI: 10.1039/c3ce41709c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Chen C, Wang J, Ren Z, Qian G, Wang Z. One-dimension TiO2 nanostructures: oriented attachment and application in dye-sensitized solar cell. CrystEngComm 2014. [DOI: 10.1039/c3ce41867g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liang J, Zhang G, Sun W. Post-treatment on dye-sensitized solar cells with TiCl4 and Nb2O5. RSC Adv 2014. [DOI: 10.1039/c3ra46188b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Roh DK, Chi WS, Ahn SH, Jeon H, Kim JH. One-step synthesis of vertically aligned anatase thornbush-like TiO2 nanowire arrays on transparent conducting oxides for solid-state dye-sensitized solar cells. CHEMSUSCHEM 2013; 6:1384-1391. [PMID: 23893968 DOI: 10.1002/cssc.201300317] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Indexed: 06/02/2023]
Abstract
Herein, we report a facile synthesis of high-density anatase-phase vertically aligned thornbush-like TiO2 nanowires (TBWs) on transparent conducting oxide glasses. Morphologically controllable TBW arrays of 9 μm in length are generated through a one-step hydrothermal reaction at 200 °C over 11 h using potassium titanium oxide oxalate dehydrate, diethylene glycol (DEG), and water. The TBWs consist of a large number of nanoplates or nanorods, as confirmed by SEM and TEM imaging. The morphologies of TBWs are controllable by adjusting DEG/water ratios. TBW diameters gradually decrease from 600 (TBW600) to 400 (TBW400) to 200 nm (TBW200) and morphologies change from nanoplates to nanorods with an increase in DEG content. TBWs are utilized as photoanodes for quasi-solid-state dye-sensitized solar cells (qssDSSCs) and solid-state DSSCs (ssDSSCs). The energy-conversion efficiency of qssDSSCs is in the order: TBW200 (5.2%)>TBW400 (4.5%)>TBW600 (3.4%). These results can be attributed to the different surface areas, light-scattering effects, and charge transport rates, as confirmed by dye-loading measurements, reflectance spectroscopy, and incident photon-to-electron conversion efficiency and intensity-modulated photovoltage spectroscopy/intensity-modulated photocurrent spectroscopy analyses. TBW200 is further treated with a graft-copolymer-directed organized mesoporous TiO2 to increase the surface area and interconnectivity of TBWs. As a result, the energy-conversion efficiency of the ssDSSC increases to 6.7% at 100 mW cm(-2) , which is among the highest values for N719-dye-based ssDSSCs.
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Affiliation(s)
- Dong Kyu Roh
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749 Korea
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Wang P, Yokoyama K, Konishi T, Nishiwaki N, Kobiro K. Ultimately simple one-pot single-step synthesis of rare earth doped spherical mesoporous metal oxide nanospheres with upconversion emission ability in supercritical methanol. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Li T, Tian B, Zhang J, Dong R, Wang T, Yang F. Facile Tailoring of Anatase TiO2 Morphology by Use of H2O2: From Microflowers with Dominant {101} Facets to Microspheres with Exposed {001} Facets. Ind Eng Chem Res 2013. [DOI: 10.1021/ie3030714] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Taoyun Li
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
| | - Baozhu Tian
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
| | - Jinlong Zhang
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
| | - Rongfang Dong
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
| | - Tingting Wang
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
| | - Fan Yang
- Key Laboratory
for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130
Meilong Road, Shanghai 200237, Peopleʼs Republic of China
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Hudry D, Apostolidis C, Walter O, Gouder T, Courtois E, Kübel C, Meyer D. Controlled Synthesis of Thorium and Uranium Oxide Nanocrystals. Chemistry 2013; 19:5297-305. [DOI: 10.1002/chem.201203888] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Indexed: 11/06/2022]
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49
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Susha AS, Lutich AA, Liu C, Xu H, Zhang R, Zhong Y, Wong KS, Yang S, Rogach AL. Comparative optical study of colloidal anatase titania nanorods and atomically thin wires. NANOSCALE 2013; 5:1465-1469. [PMID: 23322365 DOI: 10.1039/c2nr33669c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present results of a comparative study of colloidal anatase titanium oxide nanorods and extremely thin atomic wires of systematically decreasing (2.6 nm down to 0.5 nm) diameter in terms of their optical absorption as well as steady-state and time-resolved photoluminescence. Steady-state photoluminescence spectra of the titania samples show three well-distinguished spectral components, which are ascribed to excitonic emission (4.26 ± 0.2 eV), as well as radiative recombination of trapped holes with electrons from the conduction band (4.04 ± 0.4 eV) and radiative recombination of trapped electrons with holes in the valence band (3.50 ± 0.2 eV) in nanocrystalline anatase TiO(2). Time-resolved photoluminescence measurements point out the existence of different emissive species responsible for the appearance of high-energetic and low-energetic emission peaks of TiO(2) atomic wires and nanorods.
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Affiliation(s)
- Andrei S Susha
- Department of Physics and Materials Science & Centre for Functional Photonics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR
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Youssef AM, Malhat FM, Abd El-Hakim AFA. Preparation and Utilization of Polystyrene Nanocomposites Based on TiO 2Nanowires. POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING 2013; 52:228-235. [DOI: 10.1080/03602559.2012.735311] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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