1
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Zhang P, Tian Z, Kang Y, He B, Zhao Z, Hung CT, Duan L, Chen W, Tang Y, Yu J, Mai L, Li YF, Li W, Zhao D. Sub-10 nm Corrugated TiO 2 Nanowire Arrays by Monomicelle-Directed Assembly for Efficient Hole Extraction. J Am Chem Soc 2022; 144:20964-20974. [DOI: 10.1021/jacs.2c10395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pengfei Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Zhangliu Tian
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Yikun Kang
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Bowen He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zaiwang Zhao
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Chin-Te Hung
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Linlin Duan
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Wei Chen
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Yun Tang
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Ye-Fei Li
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Wei Li
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
| | - Dongyuan Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
- Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, iChEM, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China
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Liu J, Zeng H, Zhang G, Li W, Nagashima K, Takahashi T, Hosomi T, Tanaka W, Kanai M, Yanagida T. Edge-Topological Regulation for in Situ Fabrication of Bridging Nanosensors. NANO LETTERS 2022; 22:2569-2577. [PMID: 35226506 DOI: 10.1021/acs.nanolett.1c04600] [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: 06/14/2023]
Abstract
In situ fabrication of well-defined bridging nanostructures is an interesting and unique approach to three-dimensionally design nanosensor structures, which are hardly attainable by other methods. Here, we demonstrate the significant effect of edge-topological regulation on in situ fabrication of ZnO bridging nanosensors. When employing seed layers with a sharp edge, which is a well-defined structure in conventional lithography, the bridging angles and electrical resistances between two opposing electrodes were randomly distributed. The stochastic nature of bridging growth direction at the sharp edges inherently causes such unintentional variation of structural and electrical properties. We propose an edgeless seed layer structure using a two-layers resist method to solve the above uncontrollability of bridging nanosensors. Such bridging nanosensors not only substantially improved the uniformity of structural and electrical properties between two opposing electrodes but also significantly enhanced the sensing responses for NO2 with the smaller variance and the lower limit of detection via in situ controlled electrical contacts.
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Affiliation(s)
- Jiangyang Liu
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hao Zeng
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Wenjun Li
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012 Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012 Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012 Japan
| | - Wataru Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masaki Kanai
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
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3
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Current progress in developing metal oxide nanoarrays-based photoanodes for photoelectrochemical water splitting. Sci Bull (Beijing) 2019; 64:1348-1380. [PMID: 36659664 DOI: 10.1016/j.scib.2019.07.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/27/2019] [Accepted: 07/03/2019] [Indexed: 01/21/2023]
Abstract
Solar energy driven photoelectrochemical (PEC) water splitting is a clean and powerful approach for renewable hydrogen production. The design and construction of metal oxide based nanoarray photoanodes is one of the promising strategies to make the continuous breakthroughs in solar to hydrogen conversion efficiency of PEC cells owing to their owned several advantages including enhanced reactive surface at the electrode/electrolyte interface, improved light absorption capability, increased charge separation efficiency and direct electron transport pathways. In this Review, we first introduce the structure, work principle and their relevant efficiency calculations of a PEC cell. We then give a summary of the state-of the-art research in the preparation strategies and growth mechanism for the metal oxide based nanoarrays, and some details about the performances of metal oxide based nanoarray photoanodes for PEC water splitting. Finally, we discuss key aspects which should be addressed in continued work on realizing high-efficiency metal oxide based nanoarray photoanodes for PEC solar water splitting systems.
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Abstract
Semiconductor nanowires have attracted extensive interest as one of the best-defined classes of nanoscale building blocks for the bottom-up assembly of functional electronic and optoelectronic devices over the past two decades. The article provides a comprehensive review of the continuing efforts in exploring semiconductor nanowires for the assembly of functional nanoscale electronics and macroelectronics. Specifically, we start with a brief overview of the synthetic control of various semiconductor nanowires and nanowire heterostructures with precisely controlled physical dimension, chemical composition, heterostructure interface, and electronic properties to define the material foundation for nanowire electronics. We then summarize a series of assembly strategies developed for creating well-ordered nanowire arrays with controlled spatial position, orientation, and density, which are essential for constructing increasingly complex electronic devices and circuits from synthetic semiconductor nanowires. Next, we review the fundamental electronic properties and various single nanowire transistor concepts. Combining the designable electronic properties and controllable assembly approaches, we then discuss a series of nanoscale devices and integrated circuits assembled from nanowire building blocks, as well as a unique design of solution-processable nanowire thin-film transistors for high-performance large-area flexible electronics. Last, we conclude with a brief perspective on the standing challenges and future opportunities.
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Affiliation(s)
- Chuancheng Jia
- Department of Chemistry and Biochemistry , University of California, Los Angeles , Los Angeles , California 90095 , United States
| | - Zhaoyang Lin
- Department of Chemistry and Biochemistry , University of California, Los Angeles , Los Angeles , California 90095 , United States
| | - Yu Huang
- Department of Materials Science and Engineering , University of California, Los Angeles , Los Angeles , California 90095 , United States.,California NanoSystems Institute , University of California, Los Angeles , Los Angeles , California 90095 , United States
| | - Xiangfeng Duan
- Department of Chemistry and Biochemistry , University of California, Los Angeles , Los Angeles , California 90095 , United States.,California NanoSystems Institute , University of California, Los Angeles , Los Angeles , California 90095 , United States
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5
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Li C, Chen Z, Yuan W, Xu QH, Li CM. In situ growth of α-Fe 2O 3@Co 3O 4 core-shell wormlike nanoarrays for a highly efficient photoelectrochemical water oxidation reaction. NANOSCALE 2019; 11:1111-1122. [PMID: 30574647 DOI: 10.1039/c8nr07041e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photoelectrochemical (PEC) water splitting represents a promising strategy to convert solar energy into chemical energy in the form of hydrogen, but its performance is severely limited by the sluggish water oxidation reaction. Herein, for the first time, we report the direct assembly of an ultrathin, uniform, and dense layer of Co3O4 on wormlike nanostructured hematite (WN-α-Fe2O3) to form a large-area and high-density WN-α-Fe2O3@Co3O4 core-shell nanoarray via in situ hydrothermal growth followed by calcination, in which the electrostatic force between WN-α-Fe2O3 and the reactants, pH- and temperature-controlled structures of WN-α-Fe2O3, and ultralow nucleation rate of Co3O4 precursors all play critical roles. The obtained heteronanostructure array shows a photocurrent density of 3.48 mA cm-2, which is 4.05 times higher than that of pristine WN-α-Fe2O3 (0.86 mA cm-2), an onset potential of ∼0.62 V, 60 mV lower than that of α-Fe2O3 (∼0.68 V), and a photoconversion efficiency of 0.55%, 3.93 times higher than that of WN-α-Fe2O3 (0.14%). This is among the highest performances reported for Fe2O3-based photoanodes for water splitting. It is discovered that the Co3O4 shells can significantly enhance the charge separation, accelerate the charge transport and transfer, and reduce the charge transfer resistance from the photoelectrode to the electrolyte for a fast water oxidation reaction, thereby greatly promoting the PEC water oxidation performance of pristine WN-α-Fe2O3. This work not only creates a novel low-cost and Earth-abundant WN-α-Fe2O3@Co3O4 photoelectrode with superior PEC water oxidation performance and provides scientific insights into the enhancement mechanism, but also offers a general strategy for the in situ growth of water oxidation catalysts on various photoelectrodes with 3-D complex geometries for PEC water splitting.
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Affiliation(s)
- Chunmei Li
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China.
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6
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Altan AI, Chen J. In situ chemical probing of hole defects and cracks in graphene at room temperature. NANOSCALE 2018; 10:11052-11063. [PMID: 29872823 DOI: 10.1039/c8nr03109f] [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
Chemical vapor deposition (CVD) has emerged as the most promising technique towards manufacturing of large area, high quality graphene. Characterization, understanding, and controlling of various structural defects in CVD-grown graphene are essential to realize its true potential for real-world applications. We report a new method for in situ chemical probing of vacancy defects in CVD-grown graphene at room temperature. Our approach is based on a solid-gas phase reaction that occurs selectively in graphene vacancy defect regions such as holes and cracks. Our new probing technique has a unique combination of the following advantages: (1) no exposure to liquids; (2) non-damaging in situ probing; (3) high selectivity, sensitivity, and reliability towards vacancy defects; (4) simplicity and scalability. By focusing on hexagonal graphene domains, we have made the following findings: (1) the nucleation centers of graphene domains are favorable locations of hole defects. (2) The lengthy electron-beam irradiation at very low energy (3.5 keV) could etch the graphene. (3) Graphene cracks often kink at the angle of primarily 150° or 120°. (4) There exist complex graphene cracks such as cracks with clock-hands patterns, and cracks with snowflake-like branched structures. (5) There exist discontinuous cracks in some graphene domains, where hole defects are oriented along a straight or curved line. Such discontinuous cracks may arise from the ductile fracture of graphene. In addition, we have shown that our method is also applicable to chemical probing of vacancy defects such as holes, continuous and discontinuous cracks in CVD-grown monolayer polycrystalline graphene films on copper. Our study also suggests that the copper grain and copper grain boundary play significant roles in formation and distribution of graphene vacancy defects.
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Affiliation(s)
- Ali I Altan
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA.
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7
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Sachat AE, Reparaz JS, Spiece J, Alonso MI, Goñi AR, Garriga M, Vaccaro PO, Wagner MR, Kolosov OV, Sotomayor Torres CM, Alzina F. Thermal transport in epitaxial Si 1-x Ge x alloy nanowires with varying composition and morphology. NANOTECHNOLOGY 2017; 28:505704. [PMID: 29160238 DOI: 10.1088/1361-6528/aa9497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report on structural, compositional, and thermal characterization of self-assembled in-plane epitaxial Si1-x Ge x alloy nanowires grown by molecular beam epitaxy on Si (001) substrates. The thermal properties were studied by means of scanning thermal microscopy (SThM), while the microstructural characteristics, the spatial distribution of the elemental composition of the alloy nanowires and the sample surface were investigated by transmission electron microscopy and energy dispersive x-ray microanalysis. We provide new insights regarding the morphology of the in-plane nanostructures, their size-dependent gradient chemical composition, and the formation of a 5 nm thick wetting layer on the Si substrate surface. In addition, we directly probe heat transfer between a heated scanning probe sensor and Si1-x Ge x alloy nanowires of different morphological characteristics and we quantify their thermal resistance variations. We correlate the variations of the thermal signal to the dependence of the heat spreading with the cross-sectional geometry of the nanowires using finite element method simulations. With this method we determine the thermal conductivity of the nanowires with values in the range of 2-3 W m-1 K-1. These results provide valuable information in growth processes and show the great capability of the SThM technique in ambient environment for nanoscale thermal studies, otherwise not possible using conventional techniques.
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Affiliation(s)
- A El Sachat
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, E-08193 Barcelona, Spain. Department of Physics, Universitat Autònoma de Barcelona, Campus UAB, E-08193 Bellaterra (Barcelona), Spain
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Gu H, Zhang Y, Huang M, Chen F, Yang Z, Fan X, Li S, Zhang W, Yang S, Li M. Hydrolysis-Coupled Redox Reaction to 3D Cu/Fe3O4 Nanorod Array Electrodes for High-Performance Lithium-Ion Batteries. Inorg Chem 2017; 56:7657-7667. [DOI: 10.1021/acs.inorgchem.7b00112] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Heyun Gu
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Yingmeng Zhang
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Mengqiu Huang
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Fei Chen
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Zeheng Yang
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Xiaoming Fan
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Sheng Li
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Weixin Zhang
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
| | - Shihe Yang
- Department of Chemistry, William Mong Institute of Nano
Science and Technology, The Hong Kong University of Science and Technology, Clear Water
Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Mei Li
- School of Chemistry, Centre for Organized Matter Chemistry, University of Bristol, Bristol BS8 1TS, U.K
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9
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Haggren T, Perros AP, Jiang H, Huhtio T, Kakko JP, Dhaka V, Kauppinen E, Lipsanen H. Lithography-free shell-substrate isolation for core-shell GaAs nanowires. NANOTECHNOLOGY 2016; 27:275603. [PMID: 27242347 DOI: 10.1088/0957-4484/27/27/275603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A facile and scalable lithography-free technique(5) for the rapid construction of GaAs core-shell nanowires incorporating shell isolation from the substrate is reported. The process is based on interrupting NW growth and applying a thin spin-on-glass (SOG) layer to the base of the NWs and resuming core-shell NW growth. NW growth occurred in an atmospheric pressure metalorganic vapour phase epitaxy (MOVPE) system with gold nanoparticles used as catalysts for the vapour-liquid-solid growth. It is shown that NW axial core growth and radial shell growth can be resumed after interruption and even exposure to air. The SOG residues and native oxide layer that forms on the NW surface are shown to prevent or perturb resumption of epitaxial NW growth if not removed. Both HF etching and in situ annealing of the air-exposed NWs in the MOVPE were shown to remove the SOG residues and native oxide layer. While both procedures are shown capable of removing the native oxide and enabling resumption of epitaxial NW growth, in situ annealing produced the best results and allowed construction of pristine core-shell NWs. No growth occurred on SOG and it was observed that axial NW growth was more rapid when a SOG layer covered the substrate. The fabricated p-core/n-shell NWs exhibited diode behaviour upon electrical testing. The isolation of the NW shells from the substrate was confirmed by scanning electron microscopy and electrical measurements. The crystal quality of the regrown core-shell NWs was verified with a high resolution transmission electron microscope. The reported technique potentially provides a pathway using MOVPE for scalable and high-throughput production of shell-substrate isolated core-shell NWs on an industrial scale.
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Affiliation(s)
- Tuomas Haggren
- Department of Micro- and Nanosciences, Micronova, Aalto University, PO Box 13500, FI-00076, Finland
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Yu J, Chen S, Hao W, Zhang S. Fibrous-Root-Inspired Design and Lithium Storage Applications of a Co-Zn Binary Synergistic Nanoarray System. ACS NANO 2016; 10:2500-2508. [PMID: 26841220 DOI: 10.1021/acsnano.5b07352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Developing lithium ion batteries (LIBs) with fast charging/discharging capability and high capacity is a significant issue for future technical requirements. Transition-metal oxide (TMO) materials are widely studied as the next-generation LIB anode to satisfy this requirement due to their specific capacity, nearly three times than that of conventional graphite anode, and low cost. Meanwhile, they also suffer from slow lithium diffusion and limited electrochemical and structural stability, especially at high charging/discharging rate. The structure design of TMO is an effective strategy to obtain desirable LIB performance. Herein, inspired by natural fibrous roots consisting of functional and supporting units that can enhance substances and energy exchange efficiently, fibrous-root-like Zn(x)Co(3-x)O4@Zn(1-y)Co(y)O binary TMO nanoarrays are designed and synthesized on Cu substrates through a facile one-pot, successive-deposition process for use as an integrated LIB anode. In a multilevel array ordered by orientation, ultrafine Zn(x)Co(3-x)O4 nanowire functional units and stable Zn(1-y)Co(y)O nanorod supporting units synergize, resulting in superior rate performance. At a high current density of 500 mAg(-1), they could maintain a discharge capacity as high as 804 mAh g(-1) after 100 cycles, working much higher than unary cobalt-based and zinc-based nanoarrays. This binary synergistic nanoarray system identifies an optimized electrode design strategy for advanced battery materials.
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Affiliation(s)
- Jia Yu
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Shimou Chen
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Wenjun Hao
- Beijing Key Laboratory of Ionic Liquids Clean Process, Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Suojiang Zhang
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
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11
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Zhang W, Zhang Y, Yang Z, Chen G, Ma G, Wang Q. In-situdesign and construction of lithium-ion battery electrodes on metal substrates with enhanced performances: A brief review. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2015.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Wang K, Chen Z, Huang M, Yang Z, Zeng C, Wang L, Qiu M, Zhang Y, Zhang W. A galvanic replacement reaction to synthesise metal/ZnO heterostructured films on zinc substrates for enhanced photocatalytic performance. RSC Adv 2016. [DOI: 10.1039/c6ra23587e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A pine tree-like Cu/ZnO heterostructured film on Zn foil exhibits high photocatalytic performance for methyl orange under visible light irradiation.
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Affiliation(s)
- Kai Wang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
- School of Chemistry and Chemical Engineering
| | - Zhangxian Chen
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Mengqiu Huang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Zeheng Yang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Chunyan Zeng
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Lei Wang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Maoqin Qiu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Yingmeng Zhang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Weixin Zhang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
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13
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Hao J, Piao Z, Yao J, Hao Z. Glycosaminoglycan-Assisted Self-Assembly of Nanostructured Conducting Poly(3,4-ethylenedioxy thiophene) having Enhanced Osteogenic Bioactivity. Chempluschem 2015; 80:1513-1516. [PMID: 31973384 DOI: 10.1002/cplu.201500147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Jian Hao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Zhe Piao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Jin Yao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Zhao Hao
- Department of Orthopedics; The 425th Hospital of PLA; Sanya 572000 P. R. China
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14
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Zhang Y, Zhang W, Yang Z, Gu H, Zhu Q, Yang S, Li M. Self-Sustained Cycle of Hydrolysis and Etching at Solution/Solid Interfaces: A General Strategy To Prepare Metal Oxide Micro-/Nanostructured Arrays for High-Performance Electrodes. Angew Chem Int Ed Engl 2015; 54:3932-6. [DOI: 10.1002/anie.201410807] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 01/08/2015] [Indexed: 11/07/2022]
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15
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Zhang Y, Zhang W, Yang Z, Gu H, Zhu Q, Yang S, Li M. Self-Sustained Cycle of Hydrolysis and Etching at Solution/Solid Interfaces: A General Strategy To Prepare Metal Oxide Micro-/Nanostructured Arrays for High-Performance Electrodes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410807] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Guo Y, Xu L, Liu H, Li Y, Che CM, Li Y. Self-assembly of functional molecules into 1D crystalline nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:985-1013. [PMID: 25523368 DOI: 10.1002/adma.201403846] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 06/04/2023]
Abstract
Self-assembled functional nanoarchitectures are employed as important nanoscale building blocks for advanced materials and smart miniature devices to fulfill the increasing needs of high materials usage efficiency, low energy consumption, and high-performance devices. One-dimensional (1D) crystalline nanostructures, especially molecule-composed crystalline nanostructures, attract significant attention due to their fascinating infusion structure and functionality which enables the easy tailoring of organic molecules with excellent carrier mobility and crystal stability. In this review, we discuss the recent progress of 1D crystalline self-assembled nanostructures of functional molecules, which include both a small molecule-derived and a polymer-based crystalline nanostructure. The basic principles of the molecular structure design and the process engineering of 1D crystalline nanostructures are also discussed. The molecular building blocks, self-assembly structures, and their applications in optical, electrical, and photoelectrical devices are overviewed and we give a brief outlook on crucial issues that need to be addressed in future research endeavors.
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Affiliation(s)
- Yanbing Guo
- CAS Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
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Cui HW, Jiu JT, Sugahara T, Nagao S, Suganuma K, Uchida H. 'Chrysanthemum petal' arrangements of silver nano wires. NANOTECHNOLOGY 2014; 25:485705. [PMID: 25397618 DOI: 10.1088/0957-4484/25/48/485705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Highly ordered 'Chrysanthemum petal' arrangements of silver nano wires were fabricated in a biodegradable polymer of polyvinyl alcohol using a simple one-step blending method without any template. The degree of the arrangement increased with the decreasing content of polyvinyl alcohol. The mechanism for the formation of these 'Chrysanthemum petal' arrangements was discussed specifically. These 'Chrysanthemum petal' arrangements will be helpful to increase the electrical conductivity of silver nano wires films.
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Affiliation(s)
- Hui-Wang Cui
- Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567, Japan
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18
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Rackauskas S, Jiang H, Wagner JB, Shandakov SD, Hansen TW, Kauppinen EI, Nasibulin AG. In situ study of noncatalytic metal oxide nanowire growth. NANO LETTERS 2014; 14:5810-5813. [PMID: 25233273 DOI: 10.1021/nl502687s] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The majority of the nanowire synthesis methods utilize catalyst particles to guide the nanowire geometry. In contrast, catalyst-free methods are attractive for facile fabrication of pure nanowires without the need for catalyst preparation. Nonetheless, how nanowire growth is guided without a catalyst is still widely disputed and unclear. Here, we show that the nanowire growth during metal oxidation is limited by a nucleation of a new layer. On the basis of in situ transmission electron microscope investigations we found that the growth occurs layer by layer at the lowest specific surface energy planes. Atomic layers nucleate at the edge of twin boundary ridges and form a long-range ordering along the twin boundary. We anticipate our study to be a starting point to employ defects for nanowire growth control and consequently shaping the geometry of nanowires in a similar manner as in the catalyst-assisted growth method.
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Affiliation(s)
- Simas Rackauskas
- Department of Applied Physics, Aalto University School of Science , Puumiehenkuja 2, 00076 Espoo, Finland
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19
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Dai Z, Lee CS, Kim BY, Kwak CH, Yoon JW, Jeong HM, Lee JH. Honeycomb-like periodic porous LaFeO₃ thin film chemiresistors with enhanced gas-sensing performances. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16217-26. [PMID: 25166756 DOI: 10.1021/am504386q] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The use of composite materials and polynary compounds is a promising strategy to promote conductometric sensor performances. The perovskite oxides provide various compositional combinations between different oxides for tuning gas-sensing reaction and endowing rich oxygen deficiencies for preferable gas adsorption. Herein, a sacrificial colloidal template approach is exploited to fabricate crystalline ternary LaFeO3 perovskite porous thin films, by transferring a La(3+)-Fe(3+) hybrid solution-dipped template onto a substrate and sequent heat treatment. The honeycomb-like LaFeO3 film consisted of monolayer periodic pore (size: ∼ 500 nm) array can be successfully in situ synthesized in a homogeneous layout with a single phase of perovskite. This periodic porous LaFeO3 film with p-type semiconductivity exhibits a high gas response, fast response (∼4 s), trace detection capacity (50 ppb), and favorable ethanol selectivity from similar acetone. It exhibits enhanced sensing performances compared to those of a binary n-type Fe2O3 film and a nontemplated dense LaFeO3 film. In addition, a five-axe spiderweb diagram is introduced to make a feasible evaluation of the optimal practical work condition, comprehensively regarding the response/recovery rate, gas response, selectivity and operating temperature. The enhanced ethanol sensing mechanism of honeycomb-like LaFeO3 periodic porous film is also addressed. This novel and facile route to fabricate well-ordered porous LaFeO3 thin film can also be applied to many fields to obtain special performances, such as solar cells, ion conductors, gas separation, piezoelectricity, and self-powered sensing device system.
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Affiliation(s)
- Zhengfei Dai
- Department of Materials Science and Engineering, Korea University , Seoul 136-713, Republic of Korea
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20
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Liao J, Wu S, Yin Z, Huang S, Ning C, Tan G, Chu PK. Surface-dependent self-assembly of conducting polypyrrole nanotube arrays in template-free electrochemical polymerization. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10946-10951. [PMID: 25006991 DOI: 10.1021/am5017478] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
One-dimensional conducting polymer nanostructure arrays could provide short ion transport paths, thus delivering superior chemical/physical performance and having large potential as intelligent switching materials. In this work, in situ electrochemical atomic force microscopy is employed to monitor the self-assembly of conducting polypyrrole nanotube arrays in template-free electrochemical polymerization. The specific spreading behavior of pyrrole micelles on the conductive substrate is important to large-area self-assembly of conducting polypyrrole nanotube arrays and the insight into self-assembly of conducting polypyrrole nanotube arrays is discussed. Moreover, compared with unoriented nanostructured polypyrrole, the conducting polypyrrole nanotube arrays possess enhanced electrical and electrochemical performances.
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Affiliation(s)
- Jingwen Liao
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510641, China
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21
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Ingle NJC, Sode A, Martens I, Gyenge E, Wilkinson DP, Bizzotto D. Synthesis and characterization of diverse Pt nanostructures in Nafion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1871-1879. [PMID: 24491227 DOI: 10.1021/la403399y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
With the aid of TEM characterization, we describe two distinct Pt nanostructures generated via the electroless reduction of Pt(NH3)4(NO2)2 within Nafion. Under one set of conditions, we produce bundles of Pt nanorods that are 2 nm in diameter and 10-20 nm long. These bundled Pt nanorods, uniformly distributed within 5 μm of the Nafion surface, are strikingly similar to the proposed hydrated nanomorphology of Nafion, and therefore strongly suggestive of Nafion templating. By altering the reaction environment (pH, reductant strength, and Nafion hydration), we can also generate nonregular polyhedron Pt nanoparticles that range in size from a few nanometers in diameter up to 20 nm. These Pt nanoparticles form a dense Pt layer within 100-200 nm from the Nafion surface and show a power-law dependence of particle size and distribution on the distance from the Nafion membrane surface. Control over the distribution and the type of Pt nanostructures in the surface region may provide a cost-effective, simple, and scaleable pathway for enhancing manufacturability, activity, stability, and utilization efficiency of Pt catalysts for electrochemical devices.
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Affiliation(s)
- N J C Ingle
- Advanced Materials and Process Engineering Laboratory, University of British Columbia , 2355 East Mall Vancouver, British Columbia V6T 1Z4, Canada
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22
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Liao J, Zhu Y, Yin Z, Tan G, Ning C, Mao C. Tuning nano-architectures and improving bioactivity of conducting polypyrrole coating on bone implants by incorporating bone-borne small molecules. J Mater Chem B 2014; 2014:7872-7876. [PMID: 25530857 PMCID: PMC4269380 DOI: 10.1039/c4tb01053a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Citric acid, a molecule present in fresh bone, was introduced into template-free electrochemical polymerization to form biocompatible coating made of polypyrrole (PPy) nano-cones on bone implants. It served not only as a dopant to tune the nano-architectures but also as a promoter to enhance bioactivity of the PPy-coated implants.
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Affiliation(s)
- Jingwen Liao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ye Zhu
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, Norman OK 73019, USA
| | - Zhaoyi Yin
- School of Materials Science and Technology, Kunming University of Science and Technology, Kunming 650093, China
| | - Guoxin Tan
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Chengyun Ning
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, Norman OK 73019, USA
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Liu H, Wang K, Zhang L, Qian X, Li Y, Li Y. Selectively recognizing organic semiconducting molecules on solid state molecular cages based on ZnOTCPP. Dalton Trans 2014; 43:432-8. [DOI: 10.1039/c3dt51609a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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25
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Khajavi H, Stil HA, Kuipers HPCE, Gascon J, Kapteijn F. Shape and Transition State Selective Hydrogenations Using Egg-Shell Pt-MIL-101(Cr) Catalyst. ACS Catal 2013. [DOI: 10.1021/cs400681s] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hossein Khajavi
- Catalysis
Engineering, Chemical Engineering Department, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Hans A. Stil
- Shell Global Solutions, Projects and Technology, Innovation & Research/Team Experimentation (PTI/TX), Shell Technology Center Amsterdam, Grasweg 31, 1031 HW, Amsterdam, The Netherlands
| | - Herman P. C. E. Kuipers
- Shell Global Solutions, Projects and Technology, Innovation & Research/Team Experimentation (PTI/TX), Shell Technology Center Amsterdam, Grasweg 31, 1031 HW, Amsterdam, The Netherlands
| | - Jorge Gascon
- Catalysis
Engineering, Chemical Engineering Department, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Freek Kapteijn
- Catalysis
Engineering, Chemical Engineering Department, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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27
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Dai Z, Jia L, Duan G, Li Y, Zhang H, Wang J, Hu J, Cai W. Crack-Free Periodic Porous Thin Films Assisted by Plasma Irradiation at Low Temperature and Their Enhanced Gas-Sensing Performance. Chemistry 2013; 19:13387-95. [DOI: 10.1002/chem.201301137] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 07/03/2013] [Indexed: 11/10/2022]
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28
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Effect of surfactants on fabricating CuO nanoleaves and Cu nanocages at room temperature. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.05.079] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Yu X, Liu R, Zhang G, Cao H. Carbon quantum dots as novel sensitizers for photoelectrochemical solar hydrogen generation and their size-dependent effect. NANOTECHNOLOGY 2013; 24:335401. [PMID: 23892324 DOI: 10.1088/0957-4484/24/33/335401] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
As a result of global energy needs, much research has been devoted to the conversion of solar energy to various usable forms, such as chemical energy in the form of hydrogen via water splitting. To make the conversion methods efficient, economically practical, and industrially scalable, sensitizers capable of utilizing visible and near infrared (IR) light need to be developed. Herein, water-soluble, colloidally stable carbon quantum dots (CQDs) are successfully synthesized by a facile one-step alkali-assisted electrochemical method. Owing to their broad visible light absorption, upconversion luminescence properties and efficient electron injection to TiO2, these CQDs can be used as the sensitizer for photoelectrochemical cells and show an optimized photocurrent of 1.2 mA cm(-2) at 0 V versus Ag/AgCl under 100 mW cm(-2) simulated sunlight. The above results indicate that the elementally abundant and environmentally friendly CQDs, as a novel sensitizer, can surely be employed to make full use of the visible spectrum of sunlight for their application in photovoltaic devices.
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Affiliation(s)
- Xuelian Yu
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190 Beijing, People's Republic of China
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30
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Lin H, Liu H, Qian X, Chen S, Li Y, Li Y. Synthesizing Axial Inserting p–n Heterojunction Nanowire Arrays for Realizing Synergistic Performance. Inorg Chem 2013; 52:6969-74. [DOI: 10.1021/ic400302e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Haowei Lin
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Huibiao Liu
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xuemin Qian
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Songhua Chen
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yongjun Li
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yuliang Li
- CAS Key Laboratory of Organic Solids,
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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31
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Yang C, Liu S, Li M, Wang X, Zhu J, Chong R, Yang D, Zhang WH, Li C. The role of glutathione on shape control and photoelectrical property of cadmium sulfide nanorod arrays. J Colloid Interface Sci 2013; 393:58-65. [DOI: 10.1016/j.jcis.2012.10.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 10/14/2012] [Accepted: 10/15/2012] [Indexed: 10/27/2022]
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32
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Liu L, Yang LQ, Liang HW, Cong HP, Jiang J, Yu SH. Bio-inspired fabrication of hierarchical FeOOH nanostructure array films at the air-water interface, their hydrophobicity and application for water treatment. ACS NANO 2013; 7:1368-1378. [PMID: 23281829 DOI: 10.1021/nn305001r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Hierarchical FeOOH nanostructure array films constructed by different nanosized building blocks can be synthesized at the air-water interface via a bio-inspired gas-liquid diffusion method. In this approach, poly(acrylic acid) (PAA) as a crystal growth modifier plays a crucial role in mediating the morphology and polymorph of FeOOH crystals. With the increase of PAA concentration, the shape of the building blocks assembling into FeOOH films can be tailored from nanosheets, to rice spikes, then to branched fibers, and finally to nanowires. What is more, a low concentration of PAA will induce the formation of α-FeOOH, while a high one could stabilize FeOOH in the form of the γ-FeOOH phase. After being modified with a thin layer of polydimethylsiloxane (PDMS), the as-prepared FeOOH films exhibited strong hydrophobicity with water contact angles (CA) from 134° to 148° or even superhydrophobicity with a CA of 164° in the sample constructed by nanosheets. When the FeOOH nanostructures were dispersed in water by ultrasound, they displayed quite promising adsorption performance of heavy metal ions for water treatment, where the highest adsorption capacity can reach 77.2 mg·g⁻¹ in the sample constructed by nanowires. This bio-inspired approach may open up the possibilities for the fabrication of other functional nanostructure thin films with unique properties.
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Affiliation(s)
- Lei Liu
- Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry,CAS Key Laboratory of Mechanical Behavior and Design of Materials, the National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, P. R. China
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33
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Zhang W, Chen G, Yang Z, Zeng C. A Novel Approach to Well-Aligned TiO2Nanotube Arrays and Their Enhanced Photocatalytic Performances. AIChE J 2013. [DOI: 10.1002/aic.13985] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Selinsky RS, Ding Q, Faber MS, Wright JC, Jin S. Quantum dot nanoscale heterostructures for solar energy conversion. Chem Soc Rev 2013; 42:2963-85. [DOI: 10.1039/c2cs35374a] [Citation(s) in RCA: 192] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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35
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Yu X, Lu Z, Zhang G, Lei X, Liu J, Wang L, Sun X. V2O5 nanostructure arrays: controllable synthesis and performance as cathodes for lithium ion batteries. RSC Adv 2013. [DOI: 10.1039/c3ra42650e] [Citation(s) in RCA: 13] [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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36
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Guo P, Chen P, Liu M. Porphyrin assemblies via a surfactant-assisted method: from nanospheres to nanofibers with tunable length. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15482-15490. [PMID: 23072662 DOI: 10.1021/la3033594] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this paper, we report that a porphyrin, zinc 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (ZnTPyP), could be organized to form one-dimensional (1D) nanofibers via a surfactant-assisted self-assembly (SAS) method. We disclose that when a chloroform solution of ZnTPyP is dropwise added into an aqueous solution of cetyltrimethylammonium bromide (CTAB), spherical nanostructures are formed at the initial stage. The nanospheres are naturally transformed into 1D nanostructures simply by aging under ambient conditions. Interestingly, by adjusting the volume of the employed ZnTPyP chloroform solution, the length of thus-produced 1D nanoarchitectures could be efficiently controlled. It is disclosed that longer nanofibers could be manufactured when a small volume of chloroform solution of ZnTPyP is involved, while shorter 1D nanospecies could be produced when a large volume of chloroform solution of ZnTPyP is employed. The 1D nanostructures are characterized by UV-visible spectra, scanning electron microscopy, low-resolution transmission electron microscopy, high-resolution transmission electron microscopy, and fast Fourier transformation. A solubility experiment has been carried out to disclose the dispersibility of our ZnTPyP in plain water and in CTAB aqueous solution. On the basis of the experimental facts, an explanation is proposed for these interesting new findings. The investigation provides new opportunities for the controllable assembly of porphyrin-based 1D nanomaterials with tunable length, and it sheds new scientific insights on the molecular assembly process occurring in the SAS system, wherein an oil/water system is used as the assembly medium.
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Affiliation(s)
- Peipei Guo
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, PR China
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37
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Yu Q, Mao Y, Peng X. Separation Membranes Constructed from Inorganic Nanofibers by Filtration Technique. CHEM REC 2012; 13:14-27. [DOI: 10.1002/tcr.201200011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Indexed: 11/06/2022]
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38
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Urbanová M, Kupčík J, Bezdička P, Šubrt J, Pola J. Room-temperature sulfidation of copper nanoparticles with sulfur yielding covellite nanoparticles. CR CHIM 2012. [DOI: 10.1016/j.crci.2012.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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39
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Xiao K, Yoon M, Rondinone AJ, Payzant EA, Geohegan DB. Understanding the Metal-Directed Growth of Single-Crystal M-TCNQF4 Organic Nanowires with Time-Resolved, in Situ X-ray Diffraction and First-Principles Theoretical Studies. J Am Chem Soc 2012; 134:14353-61. [DOI: 10.1021/ja301456p] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kai Xiao
- Center
for Nanophase Materials Sciences, and ‡Materials Science and Technology
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Mina Yoon
- Center
for Nanophase Materials Sciences, and ‡Materials Science and Technology
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Adam J. Rondinone
- Center
for Nanophase Materials Sciences, and ‡Materials Science and Technology
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Edward A. Payzant
- Center
for Nanophase Materials Sciences, and ‡Materials Science and Technology
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David B. Geohegan
- Center
for Nanophase Materials Sciences, and ‡Materials Science and Technology
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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40
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Cabán-Acevedo M, Faber MS, Tan Y, Hamers RJ, Jin S. Synthesis and properties of semiconducting iron pyrite (FeS2) nanowires. NANO LETTERS 2012; 12:1977-1982. [PMID: 22429182 DOI: 10.1021/nl2045364] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report the growth and structural, electrical, and optical characterization of vertically oriented single-crystalline iron pyrite (FeS(2)) nanowires synthesized via thermal sulfidation of steel foil for the first time. The pyrite nanowires have diameters of 4-10 nm and lengths greater than 2 μm. Their crystal phase was identified as cubic iron pyrite using high-resolution transmission electron microscopy, Raman spectroscopy, and powder X-ray diffraction. Electrical transport measurements showed the pyrite nanowires to be highly p-doped, with an average resistivity of 0.18 ± 0.09 Ω cm and carrier concentrations on the order of 10(21) cm(-3). These pyrite nanowires could provide a platform to further study and improve the physical properties of pyrite nanostructures toward solar energy conversion.
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Affiliation(s)
- Miguel Cabán-Acevedo
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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41
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Chen C, Wei Y, Sun G, Shao B. Growth of Indium Oxide Nanowalls on Patterned Conducting Substrates: Towards Direct Fabrication of Gas Sensors. Chem Asian J 2012; 7:1018-25. [DOI: 10.1002/asia.201100803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Revised: 10/31/2011] [Indexed: 11/07/2022]
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42
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Qiu Y, Yan K, Deng H, Yang S. Secondary branching and nitrogen doping of ZnO nanotetrapods: building a highly active network for photoelectrochemical water splitting. NANO LETTERS 2012; 12:407-13. [PMID: 22149105 DOI: 10.1021/nl2037326] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A photoanode based on ZnO nanotetrapods, which feature good vectorial electron transport and network forming ability, has been developed for efficient photoelectrochemical water splitting. Two strategies have been validated in significantly enhancing light harvesting. The first was demonstrated through a newly developed branch-growth method to achieve secondary and even higher generation branching of the nanotetrapods. Nitrogen-doping represents the second strategy. The pristine ZnO nanotetrapod anode yielded a photocurrent density higher than those of the corresponding nanowire devices reported so far. This photocurrent density was significantly increased for the new photoanode architecture based on the secondary branched ZnO nanotetrapods. After N-doping, the photocurrent density enjoyed an even more dramatic enhancement to 0.99 mA/cm(2) at +0.31 V vs Ag/AgCl. The photocurrent enhancement is attributed to the greatly increased roughness factor for boosting light harvesting associated with the ZnO nanotetrapod branching, and the increased visible light absorption due to the N-doping induced band gap narrowing of ZnO.
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Affiliation(s)
- Yongcai Qiu
- Nano Science and Technology Program, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, PR China
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Lei S, Peng X, Liang Z, Li X, Wang C, Cheng B, Xiao Y, Zhou L. Self-template formation and properties study of Cr2O3nanoparticle tubes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13127c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Qin L, Zhu Q, Li G, Liu F, Pan Q. Controlled fabrication of flower–like ZnO–Fe2O3 nanostructured films with excellent lithium storage properties through a partly sacrificed template method. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30277b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tang M, Tian Q, Hu X, Peng Y, Xue Y, Chen Z, Yang J, Xu X, Hu J. In situ preparation of CuInS2 films on a flexible copper foil and their application in thin film solar cells. CrystEngComm 2012. [DOI: 10.1039/c1ce05756a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Allendorf MD, Schwartzberg A, Stavila V, Talin AA. A Roadmap to Implementing Metal-Organic Frameworks in Electronic Devices: Challenges and Critical Directions. Chemistry 2011; 17:11372-88. [DOI: 10.1002/chem.201101595] [Citation(s) in RCA: 359] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Indexed: 11/06/2022]
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Ma S, Li R, Lv C, Xu W, Gou X. Facile synthesis of ZnO nanorod arrays and hierarchical nanostructures for photocatalysis and gas sensor applications. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:730-740. [PMID: 21684076 DOI: 10.1016/j.jhazmat.2011.05.082] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 05/03/2011] [Accepted: 05/25/2011] [Indexed: 05/30/2023]
Abstract
A facile one-step hydrothermal route was demonstrated to grow ZnO nanorod arrays and hierarchical nanostructures on arbitrary substrates without any catalysts and seeds coated before the reaction, which are prerequisite in the current two-step protocol. Meanwhile, ZnO nanoflowers composed of nanorods were obtained at the bottom of the autoclaves in the absence of substrates. An in situ spontaneous-seeds-assisted growth mechanism was tentatively proposed on the basis of the experimental data to explain the growth process of ZnO nanostructures. Moreover, the obtained ZnO nanorod arrays exhibited superior photocatalytic activity for decomposing methyl orange, and the nanoflowers showed better gas sensing performance towards some flammable gases and corrosive vapors with high sensitivity, rapid response-recovery characteristics, good selectivity and long-term stability.
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Affiliation(s)
- Shuaishuai Ma
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, 1# Shida Road, Nanchong 637000, People's Republic of China
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Han Q, Sun S, Li J, Wang X. Growth of copper sulfide dendrites and nanowires from elemental sulfur on TEM Cu grids under ambient conditions. NANOTECHNOLOGY 2011; 22:155607. [PMID: 21389583 DOI: 10.1088/0957-4484/22/15/155607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Copper sulfide dendrites and subsequent uniform nanowires up to tens of micrometers long can be grown on carbon-coated transmission electron microscopy (TEM) Cu grids from elemental sulfur at room temperature under ambient conditions without any solvent and surfactants. TEM and high-resolution TEM studies demonstrated the morphology evolution of Cu₂S from dendrites into ultra-long nanowires with increasing ageing time. The sulfur species influenced significantly the growth rate of Cu₂S dendrites and nanowires, but the final morphology remained the same. The native oxide on the surface of Cu grids played a critical role in the formation of Cu₂S dendrites and nanowires. The crystal structures and phase purity of Cu₂S samples were confirmed by x-ray diffraction (XRD) and energy dispersive x-ray spectroscopy (EDX). A solid-liquid-solid growth model may be considered a potential mechanism in Cu₂S morphology evolution on the basis of the experimental results. Most importantly, the present study provides a simple and environmentally friendly route for the growth of one-dimensional (1D) Cu₂S on Cu substrate.
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Affiliation(s)
- Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China.
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Pola J, Urbanová M, Pokorná D, Bastl Z, Bakardjieva S, Šubrt J, Bezdička P. Laser photodeposition of sulfur and room-temperature solid-state reaction with copper. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.01.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liu J, Cheng C, Zhou W, Li H, Fan HJ. Ultrathin nickel hydroxidenitrate nanoflakes branched on nanowire arrays for high-rate pseudocapacitive energy storage. Chem Commun (Camb) 2011; 47:3436-8. [DOI: 10.1039/c0cc04906a] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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