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Huang TC, Ke SW, Wu YH, Wang ER, Wei WL, Lee CY, Chen BY, Yin GC, Chang HW, Tang MT, Lin BH. Combination of XEOL, TR-XEOL and HB-T interferometer at the TPS 23A X-ray nanoprobe for exploring quantum materials. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:252-259. [PMID: 38241123 PMCID: PMC10914160 DOI: 10.1107/s1600577523010469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/05/2023] [Indexed: 01/21/2024]
Abstract
In this study, a combination of X-ray excited optical luminescence (XEOL), time-resolved XEOL (TR-XEOL) and the Hanbury-Brown and Twiss (HB-T) interferometer at the Taiwan Photon Source (TPS) 23A X-ray nanoprobe beamline for exploring quantum materials is demonstrated. On the basis of the excellent spatial resolution rendered using a nano-focused beam, emission distributions of artificial micro-diamonds can be obtained by XEOL maps, and featured emission peaks of a selected local area can be obtained by XEOL spectra. The hybrid bunch mode of the TPS not only provides a sufficiently high peak power density for experiments at each beamline but also permits high-quality temporal domain (∼200 ns) measurements for investigating luminescence dynamics. From TR-XEOL measurements, the decay lifetime of micro-diamonds is determined to be approximately 16 ns. Furthermore, the XEOL spectra of artificial micro-diamonds can be investigated by the HB-T interferometer to identify properties of single-photon sources. The unprecedented strategy of combining XEOL, TR-XEOL and the HB-T interferometer at the X-ray nanoprobe beamline will open new avenues with significant characterization abilities for unraveling the emission mechanisms of single-photon sources for quantum materials.
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Affiliation(s)
- Tzu-Chi Huang
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Shang-Wei Ke
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Yu-Hao Wu
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - En-Rui Wang
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Wei-Lon Wei
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Chien-Yu Lee
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Bo-Yi Chen
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Gung-Chian Yin
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Han-Wei Chang
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
| | - Mau-Tsu Tang
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Bi-Hsuan Lin
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
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2
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Mendoza Conde GO, Luna López JA, Hernández Simón ZJ, Hernández de la Luz JÁD, Monfil Leyva K, Carrillo López J, Martínez Hernández HP, Gastellóu Hernández E, Berman Mendoza D, Flores Méndez J. Nanocomposites of Silicon Oxides and Carbon: Its Study as Luminescent Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1271. [PMID: 37049364 PMCID: PMC10096624 DOI: 10.3390/nano13071271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
In this work, hybrid structures formed by nanostructured layers, which contain materials, such as porous silicon (PSi), carbon nanotubes (CNTs), graphene oxide (GO), and silicon-rich oxide (SRO), were studied. The PSi layers were obtained by electrochemical etching over which CNTs and GO were deposited by spin coating. In addition, SRO layers, in which silicon nanocrystals are embedded, were obtained by hot filament chemical vapor deposition (HFCVD) technique. Photoluminescence (PL) spectra were obtained from the hybrid structures with which a comparative analysis was completed among different PL ones. The SRO layers were used to confine the CNTs and GO. The main purpose of making these hybrid structures is to modulate their PL response and obtain different emission energy regions in the PL response. It was found that the PL spectra of the CNTs/SRO and GO/SRO structures exhibit a shift towards high energies compared to those obtained from the PSi layers; likewise, the PSi/CNTs/SRO and PSi/GO/SRO structures show a similar behavior. To identify the different emission mechanisms originated by PSi, GO, CNTs, and SRO, the PL spectra were deconvolved. It was found that the Psi/CNTs/SRO and Psi/GO/SRO structures exhibit a PL shift in respect to the PSi layers, for this reason, the modulation of the PL emission of the structures makes these hybrid structures promising candidates to be applied in the field of photonic and electroluminescent devices.
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Affiliation(s)
- Gabriel Omar Mendoza Conde
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - José Alberto Luna López
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - Zaira Jocelyn Hernández Simón
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - José Álvaro David Hernández de la Luz
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - Karim Monfil Leyva
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - Jesús Carrillo López
- Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 Sur, Puebla 72570, Mexico
| | - Haydee Patricia Martínez Hernández
- Departamento de Ingeniería Eléctrica y Electrónica, Instituto Tecnológico de Apizaco (ITA), Fco I Madero s/n, Barrio de San José, Apizaco 90300, Mexico
| | | | - Dainet Berman Mendoza
- Departamento de Investigación en Física, Universidad de Sonora (UNISON), Hermosillo 83000, Mexico
| | - Javier Flores Méndez
- Facultad de Ciencias de la Electrónica (FCE), Benemérita Universidad Autónoma de Puebla (BUAP), Col. San Manuel. Cd. Universitaria, Av. San Claudio y 18 Sur, Puebla 72570, Mexico
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Peng X, Liu HX, Zhang Y, Huang ZQ, Yang L, Jiang Y, Wang X, Zheng L, Chang C, Au CT, Jiang L, Li J. Highly efficient ammonia synthesis at low temperature over a Ru-Co catalyst with dual atomically dispersed active centers. Chem Sci 2021; 12:7125-7137. [PMID: 34123340 PMCID: PMC8153211 DOI: 10.1039/d1sc00304f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 04/07/2021] [Indexed: 01/01/2023] Open
Abstract
The desire for a carbon-free society and the continuously increasing demand for clean energy make it valuable to exploit green ammonia (NH3) synthesis that proceeds via the electrolysis driven Haber-Bosch (eHB) process. The key for successful operation is to develop advanced catalysts that can operate under mild conditions with efficacy. The main bottleneck of NH3 synthesis under mild conditions is the known scaling relation in which the feasibility of N2 dissociative adsorption of a catalyst is inversely related to that of the desorption of surface N-containing intermediate species, which leads to the dilemma that NH3 synthesis could not be catalyzed effectively under mild conditions. The present work offers a new strategy via introducing atomically dispersed Ru onto a single Co atom coordinated with pyrrolic N, which forms RuCo dual single-atom active sites. In this system the d-band centers of Ru and Co were both regulated to decouple the scaling relation. Detailed experimental and theoretical investigations demonstrate that the d-bands of Ru and Co both become narrow, and there is a significant overlapping of t2g and eg orbitals as well as the formation of a nearly uniform Co 3d ligand field, making the electronic structure of the Co atom resemble that of a "free-atom". The "free-Co-atom" acts as a bridge to facilitate electron transfer from pyrrolic N to surface Ru single atoms, which enables the Ru atom to donate electrons to the antibonding π* orbitals of N2, thus resulting in promoted N2 adsorption and activation. Meanwhile, H2 adsorbs dissociatively on the Co center to form a hydride, which can transfer to the Ru site to cause the hydrogenation of the activated N2 to generate N2H x (x = 1-4) intermediates. The narrow d-band centers of this RuCo catalyst facilitate desorption of surface *NH3 intermediates even at 50 °C. The cooperativity of the RuCo system decouples the sites for the activation of N2 from those for the desorption of *NH3 and *N2H x intermediates, giving rise to a favorable pathway for efficient NH3 synthesis under mild conditions.
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Affiliation(s)
- Xuanbei Peng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Han-Xuan Liu
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University Xi'an 710049 China
| | - Yangyu Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Zheng-Qing Huang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University Xi'an 710049 China
| | - Linlin Yang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Yafei Jiang
- Department of Chemistry, Southern University of Science and Technology Shenzhen China
| | - Xiuyun Wang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Lirong Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing China
| | - Chunran Chang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University Xi'an 710049 China
| | - Chak-Tong Au
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University Fuzhou Fujian 350002 China
| | - Jun Li
- Department of Chemistry, Southern University of Science and Technology Shenzhen China
- Department of Chemistry, Tsinghua University Beijing China
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Engineered Zero-Dimensional Fullerene/Carbon Dots-Polymer Based Nanocomposite Membranes for Wastewater Treatment. Molecules 2020; 25:molecules25214934. [PMID: 33114470 PMCID: PMC7663180 DOI: 10.3390/molecules25214934] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 11/26/2022] Open
Abstract
With the rapid growth of industrialization, diverse pollutants produced as by-products are emitted to the air-water ecosystem, and toxic contamination of water is one of the most hazardous environmental issues. Various forms of carbon have been used for adsorption, electrochemical, and ion-exchange membrane filtration to separation processes for water treatment. The utilization of carbon materials has gained tremendous attention as they have exceptional properties such as chemical, mechanical, thermal, antibacterial activities, along with reinforcement capability and high thermal stability, that helps to maintain the ecological balance. Recently, engineered nano-carbon incorporated with polymer as a composite membrane has been spotlighted as a new and effective mode for water treatment. In particular, the properties of zero-dimensional (0D) carbon forms (fullerenes and carbon dots) have encouraged researchers to explore them in the field of wastewater treatment through membrane technologies as they are biocompatible, which is the ultimate requirement to ensure the safety of drinking water. Thus, the purpose of this review is to highlight and summarize current advances in the field of water purification/treatment using 0D carbon-polymer-based nanocomposite membranes. Particular emphasis is placed on the development of 0D carbon forms embedded into a variety of polymer membranes and their influence on the improved performance of the resulting membranes. Current challenges and opportunities for future research are discussed.
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Xiao W, Sun Q, Liu J, Xiao B, Li X, Glans PA, Li J, Li R, Li X, Guo J, Yang W, Sham TK, Sun X. Engineering Surface Oxygenated Functionalities on Commercial Carbon toward Ultrafast Sodium Storage in Ether-Based Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37116-37127. [PMID: 32701256 DOI: 10.1021/acsami.0c08899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The pursuit of a high-capacity anode material has been urgently required for commercializing sodium-ion batteries with a high energy density and an improved working safety. In the absence of thermodynamically stable sodium intercalated compounds with graphite, constructing nanostructures with expanded interlayer distances is still the mainstream option for developing high-performance carbonaceous anodes. In this regard, a surface-functionalized and pore-forming strategy through a facile CO2 thermal etching route was rationally adopted to engineer negligible oxygenated functionalities on commercial carbon for boosting the sodium storage process. Benefitted from the abundant ionic/electronic pathways and more active reaction sites in the microporous structure with noticeable pseudocapacitive behaviors, the functionalized porous carbon could achieve a highly reversible capacity of 505 mA h g-1 at 50 mA g-1, an excellent rate performance of 181 mA h g-1 at 16,000 mA g-1, and an exceptional rate cycle stability of 176 mA h g-1 at 3200 mA g-1 over 1000 cycles. These outstanding electrochemical properties should be ascribed to a synergistic mechanism, fully utilizing the graphitic and amorphous structures for synchronous intercalations of sodium ions and solvated sodium ion compounds, respectively. Additionally, the controllable generation and evolution of a robust but thin solid electrolyte interphase film with the emergence of obvious capacitive reactions on the defective surface, favoring the rapid migration of sodium ions and solvated species, also contribute to a remarkable electrochemical performance of this porous carbon black.
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Affiliation(s)
- Wei Xiao
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
- Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
- Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China
| | - Qian Sun
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Jian Liu
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Biwei Xiao
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Xia Li
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Per-Anders Glans
- Lawrence Berkeley National Laboratory, Advanced Light Source, Berkeley, California 94720, United States
| | - Jun Li
- Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Ruying Li
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Xifei Li
- Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China
| | - Jinghua Guo
- Lawrence Berkeley National Laboratory, Advanced Light Source, Berkeley, California 94720, United States
| | - Wanli Yang
- Lawrence Berkeley National Laboratory, Advanced Light Source, Berkeley, California 94720, United States
| | - Tsun-Kong Sham
- Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Xueliang Sun
- Department of Mechanical & Materials Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada
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6
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Xiong Y, Sun W, Xin P, Chen W, Zheng X, Yan W, Zheng L, Dong J, Zhang J, Wang D, Li Y. Gram-Scale Synthesis of High-Loading Single-Atomic-Site Fe Catalysts for Effective Epoxidation of Styrene. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000896. [PMID: 32686283 DOI: 10.1002/adma.202000896] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 06/08/2020] [Indexed: 05/09/2023]
Abstract
Single-atomic-site (SAS) catalysts, a new frontier of catalysts, always show extremely high atom efficiency and unexpected catalytic properties. Herein, a pyrolyzing coordinated polymer (PCP) strategy is developed, which is facile and widely applicable in the synthesis of a series of SAS catalysts including SAS-Fe, SAS-Ni, SAS-Cu, SAS-Zn, SAS-Ru, SAS-Rh, SAS-Pd, SAS-Pt, and SAS-Ir. The as-obtained SAS catalysts can be easily synthesized at gram scale and the metal loading of SAS-Fe catalysts achieves a record value of 30 wt%, which meets the requirement of practical applications. Moreover, it is discovered that SAS-Fe catalysts show unprecedented catalytic performance for epoxidation of styrene using O2 as the only oxidant (yield: 64%; selectivity: 89%), while Fe nanoparticles and ironporphyrin are inactive. This discovery is believed to pave the way for exploiting the unparalleled properties of SAS catalysts and promoting their industrial applications.
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Affiliation(s)
- Yu Xiong
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Wenming Sun
- College of Science, China Agricultural University, Beijing, 100193, China
| | - Pingyu Xin
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Wenxing Chen
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xusheng Zheng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100084, China
| | - Juncai Dong
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100084, China
| | - Jian Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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7
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Niu H, Yang X, Wang Y, Li M, Zhang G, Pan P, Qi Y, Yang Z, Wang J, Liao Z. Electrochemiluminescence Detection of Sunset Yellow by Graphene Quantum Dots. Front Chem 2020; 8:505. [PMID: 32714896 PMCID: PMC7344220 DOI: 10.3389/fchem.2020.00505] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/15/2020] [Indexed: 12/12/2022] Open
Abstract
Use of food additives, such as colorants and preservatives, is highly regulated because of their potential health risks to humans. Therefore, it is important to detect these compounds effectively to ensure conformance with industrial standards and to mitigate risk. In this paper, we describe the preparation and performance of an ultrasensitive electrochemiluminescence (ECL) sensor for detecting a key food additive, sunset yellow. The sensor uses graphene quantum dots (GQDs) as the luminescent agent and potassium persulfate as the co-reactant. Strong and sensitive ECL signals are generated in response to trace amounts of added sunset yellow. A detection limit (signal-to-noise ratio = 3) of 7.6 nM and a wide linear range from 2.5 nM to 25 μM are demonstrated. A further advantage of the method is that the luminescent reagents can be recycled, indicating that the method is sustainable, in addition to being simple and highly sensitive.
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Affiliation(s)
- Huimin Niu
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Xin Yang
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Yilei Wang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Mingchen Li
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Guangliang Zhang
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Peng Pan
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Yangyang Qi
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - Zhengchun Yang
- Tianjin Key Laboratory of Film Electronic and Communication Devices, Advanced Materials and Printed Electronics Center, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin, China
| | - John Wang
- Department of Materials Science and Engineering, National University of Singapore, Singapore, Singapore
| | - Zhenyu Liao
- Pony Testing International Group, Tianjin, China
- Tianjin Food Safety Inspection Technology Institute, Tianjin, China
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8
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Sun Z, Li X, Wu Y, Wei C, Zeng H. Origin of green luminescence in carbon quantum dots: specific emission bands originate from oxidized carbon groups. NEW J CHEM 2018. [DOI: 10.1039/c7nj04562j] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study demonstrates that the surface state functional groups are responsible for green waveband originating from CDs.
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Affiliation(s)
- Zhiguo Sun
- Institute of Optoelectronics & Nanomaterials
- MIIT Key Laboratory of Advanced Display Materials and Devices
- College of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
| | - Xiaoming Li
- Institute of Optoelectronics & Nanomaterials
- MIIT Key Laboratory of Advanced Display Materials and Devices
- College of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
| | - Ye Wu
- Institute of Optoelectronics & Nanomaterials
- MIIT Key Laboratory of Advanced Display Materials and Devices
- College of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
| | - Changting Wei
- Institute of Optoelectronics & Nanomaterials
- MIIT Key Laboratory of Advanced Display Materials and Devices
- College of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials
- MIIT Key Laboratory of Advanced Display Materials and Devices
- College of Materials Science and Engineering
- Nanjing University of Science and Technology
- Nanjing
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9
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Zhou J, Wang J, Hu Y, Lu M. Chemical Imaging of Nanoscale Interfacial Inhomogeneity in LiFePO 4 Composite Electrodes from a Cycled Large-Format Battery. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39336-39341. [PMID: 29072451 DOI: 10.1021/acsami.7b11427] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The nanoscale interfacial inhomogeneity in a cycled large-format LiFePO4 (LFP) composite electrode has been studied by X-ray photoemission electron microscopy at single particle spatial resolution with a probe depth of ∼5 nm. The loss of active lithium in cycled LFP causes the coexsitence of fully delithiated LFP (FePO4) and partially delithiated LFP (Li0.6FePO4 or Li0.8FePO4) as a function of the extent of lithium loss. The distribution of various lithium loss phases along with local agglomeration of LFP and degradation of binder and carbon black are correlatively visualized. This is the first experimental exploration of chemical interplay between components in the composite electrode from a large-format battery, and implications on the LFP degradation in this battery are discussed.
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Affiliation(s)
- Jigang Zhou
- Canadian Light Source Inc. , Saskatoon, Canada S7N 2V3
| | - Jian Wang
- Canadian Light Source Inc. , Saskatoon, Canada S7N 2V3
| | - Yongfeng Hu
- Canadian Light Source Inc. , Saskatoon, Canada S7N 2V3
| | - Mi Lu
- Key Laboratory of Functional Materials and Applications of Fujian Province, School of Materials Science and Engineering, Xiamen University of Technology , Xiamen 361024, China
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10
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Sai L, Chen J, Chang Q, Shi W, Chen Q, Huang L. Protein-derived carbon nanodots with an ethylenediamine-modulated structure as sensitive fluorescent probes for Cu2+detection. RSC Adv 2017. [DOI: 10.1039/c7ra01441d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The increasing use of fluorescent carbon nanodots (CNDs) demonstrates their advantages for sensing applications; these include superior photostability, absence of toxicity, and rapid analytical capability.
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Affiliation(s)
- Liman Sai
- Joint Lab with Wuhu Token for Graphene Electrical Materials and Application
- Department of Physics
- Shanghai Normal University
- Shanghai 200234
- China
| | - Jun Chen
- Department of Orthopedic Sport Medicine
- Huashan Hospital
- Fudan University
- Shanghai
- China
| | - Quanhong Chang
- Joint Lab with Wuhu Token for Graphene Electrical Materials and Application
- Department of Physics
- Shanghai Normal University
- Shanghai 200234
- China
| | - Wangzhou Shi
- Joint Lab with Wuhu Token for Graphene Electrical Materials and Application
- Department of Physics
- Shanghai Normal University
- Shanghai 200234
- China
| | - Qi Chen
- Joint Lab with Wuhu Token for Graphene Electrical Materials and Application
- Department of Physics
- Shanghai Normal University
- Shanghai 200234
- China
| | - Lei Huang
- Joint Lab with Wuhu Token for Graphene Electrical Materials and Application
- Department of Physics
- Shanghai Normal University
- Shanghai 200234
- China
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11
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Wang J, Ji Y, Appathurai N, Zhou J, Yang Y. Nanoscale chemical imaging of the additive effects on the interfaces of high-voltage LiCoO2 composite electrodes. Chem Commun (Camb) 2017; 53:8581-8584. [DOI: 10.1039/c7cc03960c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
X-ray photoemission electron microscopy (X-PEEM) of cycled LiCoO2 composite electrodes has revealed the interfaces of various components within the composite electrodes and their dependence on additives in the electrolyte and the interplay of multiple components in the electrodes.
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Affiliation(s)
- Jian Wang
- Canadian Light Source Inc
- Saskatoon
- Canada
| | - Yajuan Ji
- State Key Lab for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and Department of Chemistry
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | | | | | - Yong Yang
- State Key Lab for Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and Department of Chemistry
- Xiamen University
- Xiamen 361005
- People's Republic of China
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12
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Xu X, Bao Z, Zhou G, Zeng H, Hu J. Enriching Photoelectrons via Three Transition Channels in Amino-Conjugated Carbon Quantum Dots to Boost Photocatalytic Hydrogen Generation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:14118-14124. [PMID: 27191031 DOI: 10.1021/acsami.6b02961] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Well-steered transport of photogenerated carriers in optoelectronic systems underlies many emerging solar conversion technologies, yet assessing the charge transition route in nanomaterials remains a challenge. Herein, we combine the photoinduced absorption, emission, and excitation properties in high luminescent carbon quantum dots (CQDs) with an amino-modified surface to identify the existence of three photoelectron transition channels, that is, near-band-edge transition, multiphoton active transition in CQDs, and transfer from amino groups to CQDs, and together they contribute to strong blue photoluminescence (PL) independent of the excitation wavelength. Moreover, the enriching electron reservoir via these three channels was demonstrated in a holes cleaning environment to efficiently trigger water splitting into hydrogen with excellent stability and recyclability.
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Affiliation(s)
- Xiaoyong Xu
- School of Physics Science and Technology, Yangzhou University , Yangzhou 225002, China
- Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Zhijia Bao
- School of Physics Science and Technology, Yangzhou University , Yangzhou 225002, China
| | - Gang Zhou
- School of Physics Science and Technology, Yangzhou University , Yangzhou 225002, China
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Jingguo Hu
- School of Physics Science and Technology, Yangzhou University , Yangzhou 225002, China
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13
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Fedoseeva YV, Bulusheva LG, Okotrub AV, Kanygin MA, Gorodetskiy DV, Asanov IP, Vyalikh DV, Puzyr AP, Bondar VS. Field emission luminescence of nanodiamonds deposited on the aligned carbon nanotube array. Sci Rep 2015; 5:9379. [PMID: 25797710 PMCID: PMC4369750 DOI: 10.1038/srep09379] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 03/02/2015] [Indexed: 11/09/2022] Open
Abstract
Detonation nanodiamonds (NDs) were deposited on the surface of aligned carbon nanotubes (CNTs) by immersing a CNT array in an aqueous suspension of NDs in dimethylsulfoxide (DMSO). The structure and electronic state of the obtained CNT–ND hybrid material were studied using optical and electron microscopy and Infrared, Raman, X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopy. A non-covalent interaction between NDs and CNT and preservation of vertical orientation of CNTs in the hybrid were revealed. We showed that current-voltage characteristics of the CNT–ND cathode are changed depending on the applied field; below ~3 V/µm they are similar to those of the initial CNT array and at the higher field they are close to the ND behavior. Involvement of the NDs in field emission process resulted in blue luminescence of the hybrid surface at an electric field higher than 3.5 V/µm. Photoluminescence measurements showed that the NDs emit blue-green light, while blue luminescence prevails in the CNT–ND hybrid. The quenching of green luminescence was attributed to a partial removal of oxygen-containing groups from the ND surface as the result of the hybrid synthesis.
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Affiliation(s)
- Yu V Fedoseeva
- 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia
| | - L G Bulusheva
- 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia
| | - A V Okotrub
- 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia
| | - M A Kanygin
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - D V Gorodetskiy
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - I P Asanov
- 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia
| | - D V Vyalikh
- Institute of Solid State Physics, Dresden University of Technology, D-01062 Dresden, Germany
| | - A P Puzyr
- Institute of Biophysics SB RAS, Krasnoyarsk 660036, Russia
| | - V S Bondar
- Institute of Biophysics SB RAS, Krasnoyarsk 660036, Russia
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14
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Zhou J, Duchesne PN, Hu Y, Wang J, Zhang P, Li Y, Regier T, Dai H. Fe–N bonding in a carbon nanotube–graphene complex for oxygen reduction: an XAS study. Phys Chem Chem Phys 2014; 16:15787-91. [DOI: 10.1039/c4cp01455c] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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15
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Lv L, Fan Y, Chen Q, Zhao Y, Hu Y, Zhang Z, Chen N, Qu L. Three-dimensional multichannel aerogel of carbon quantum dots for high-performance supercapacitors. NANOTECHNOLOGY 2014; 25:235401. [PMID: 24847850 DOI: 10.1088/0957-4484/25/23/235401] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A three-dimensional (3D) carbon quantum dot (CQD) aerogel has been prepared by in situ assembling CQDs in the sol-gel polymerization of resorcinol (R) and formaldehyde (F) and subsequently pyrolyzing the formed CQD gel. Compared to the supercapacitor based on the CQD-free aerogel, the supercapacitor fabricated with the CQD aerogel showed 20-fold higher specific capacitance (294.7 F g(-1) at the current density of 0.5 A g(-1)) and an excellent stability over 1000 consecutive charge-discharge cycles.
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Affiliation(s)
- Lingxiao Lv
- Key Laboratory of Cluster Science, Ministry of Education of China; Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China
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16
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Engineering surface states of carbon dots to achieve controllable luminescence for solid-luminescent composites and sensitive Be2+ detection. Sci Rep 2014. [PMCID: PMC4021332 DOI: 10.1038/srep04976] [Citation(s) in RCA: 331] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Luminescent carbon dots (L-CDs) with high quantum yield value (44.7%) and controllable emission wavelengths were prepared via a facile hydrothermal method. Importantly, the surface states of the materials could be engineered so that their photoluminescence was either excitation-dependent or distinctly independent. This was achieved by changing the density of amino-groups on the L-CD surface. The above materials were successfully used to prepare multicolor L-CDs/polymer composites, which exhibited blue, green, and even white luminescence. In addition, the excellent excitation-independent luminescence of L-CDs prepared at low temperature was tested for detecting various metal ions. As an example, the detection limit of toxic Be2+ ions, tested for the first time, was as low as 23 μM.
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Caretti I, Jiménez I, Van Doorslaer S. Chemical changes in irradiated polypropylene studied by X-ray photoabsorption and advanced EPR/ENDOR spectroscopies. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.01.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Yin Y, Han J, Zhang X, Zhang Y, Zhou J, Muir D, Sutarto R, Zhang Z, Liu S, Song B. Facile synthesis of few-layer-thick carbon nitride nanosheets by liquid ammonia-assisted lithiation method and their photocatalytic redox properties. RSC Adv 2014. [DOI: 10.1039/c4ra06036a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High-quality few-layer-thick graphitic carbon nitride (g-C3N4) nanosheets (NSs) were fabricated by a simple, highly efficient, and rapid method namely, liquid ammonia (LA)-assisted lithiation.
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Affiliation(s)
- Ying Yin
- Center for Composite Materials
- Harbin Institute of Technology
- Harbin 150080, China
| | - Jiecai Han
- Center for Composite Materials
- Harbin Institute of Technology
- Harbin 150080, China
| | - Xinghong Zhang
- Center for Composite Materials
- Harbin Institute of Technology
- Harbin 150080, China
| | - Yumin Zhang
- Center for Composite Materials
- Harbin Institute of Technology
- Harbin 150080, China
| | | | - David Muir
- Canadian Light Source Inc
- Saskatoon, Canada
| | | | - Zhihua Zhang
- Liaoning Key Materials Laboratory for Railway
- School of Materials Science and Engineering
- Dalian Jiaotong University
- Dalian 116028, China
| | - Shengwei Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070, China
| | - Bo Song
- Center for Composite Materials
- Harbin Institute of Technology
- Harbin 150080, China
- Academy of Fundamental and Interdisciplinary Sciences
- Harbin Institute of Technology
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Zhou J, Hu Y, Li X, Wang C, Zuin L. Chemical bonding in amorphous Si-coated carbon nanotubes as anodes for Li ion batteries: a XANES study. RSC Adv 2014. [DOI: 10.1039/c4ra01332h] [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] Open
Abstract
The Si–O–C bonding and its evolution upon electrochemical cycling in a Si-coated carbon nanotube anode are unveiled by X-ray absorption spectroscopy studies.
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Affiliation(s)
- Jigang Zhou
- Canadian Light Source Inc
- Saskatoon, Canada
- School of Chemical Engineering
- Harbin Institute of Technology
- China
| | | | - Xiaolin Li
- Pacific Northwest National Laboratory
- Richland, USA
| | | | - Lucia Zuin
- Canadian Light Source Inc
- Saskatoon, Canada
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20
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Zhou J, Hong D, Wang J, Hu Y, Xie X, Fang H. Electronic structure variation of the surface and bulk of a LiNi0.5Mn1.5O4cathode as a function of state of charge: X-ray absorption spectroscopic study. Phys Chem Chem Phys 2014; 16:13838-42. [DOI: 10.1039/c4cp01436g] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure of Li1−xNi0.5Mn1.5O4as a function of the charge state shows different roles of the constituent atoms, and the surface and bulk structures change upon electrochemical cycling.
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Affiliation(s)
- Jigang Zhou
- Canadian Light Source Inc
- Saskatoon, Canada
- School of Chemical Engineering
- Harbin Institute of Technology
- China
| | - Da Hong
- School of Materials Engineering
- Harbin Institute of Technology
- China
| | - Jian Wang
- Canadian Light Source Inc
- Saskatoon, Canada
| | | | - Xiaohua Xie
- Shanghai Institute of Microsystem and Information Technology
- Chinese Academy of Science
- China
| | - Haitao Fang
- School of Materials Engineering
- Harbin Institute of Technology
- China
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21
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Liang Y, Li Y, Wang H, Dai H. Strongly Coupled Inorganic/Nanocarbon Hybrid Materials for Advanced Electrocatalysis. J Am Chem Soc 2013; 135:2013-36. [DOI: 10.1021/ja3089923] [Citation(s) in RCA: 785] [Impact Index Per Article: 71.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yongye Liang
- Department of Chemistry, Stanford
University, Stanford, California 94305, United States
- Department of Chemistry, South
University of Science and Technology of China, Shenzhen 518055, China
| | - Yanguang Li
- Department of Chemistry, Stanford
University, Stanford, California 94305, United States
| | - Hailiang Wang
- Department of Chemistry, Stanford
University, Stanford, California 94305, United States
| | - Hongjie Dai
- Department of Chemistry, Stanford
University, Stanford, California 94305, United States
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22
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Liang Y, Wang H, Zhou J, Li Y, Wang J, Regier T, Dai H. Covalent hybrid of spinel manganese-cobalt oxide and graphene as advanced oxygen reduction electrocatalysts. J Am Chem Soc 2012; 134:3517-23. [PMID: 22280461 DOI: 10.1021/ja210924t] [Citation(s) in RCA: 637] [Impact Index Per Article: 53.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Through direct nanoparticle nucleation and growth on nitrogen doped, reduced graphene oxide sheets and cation substitution of spinel Co(3)O(4) nanoparticles, a manganese-cobalt spinel MnCo(2)O(4)/graphene hybrid was developed as a highly efficient electrocatalyst for oxygen reduction reaction (ORR) in alkaline conditions. Electrochemical and X-ray near-edge structure (XANES) investigations revealed that the nucleation and growth method for forming inorganic-nanocarbon hybrids results in covalent coupling between spinel oxide nanoparticles and N-doped reduced graphene oxide (N-rmGO) sheets. Carbon K-edge and nitrogen K-edge XANES showed strongly perturbed C-O and C-N bonding in the N-rmGO sheet, suggesting the formation of C-O-metal and C-N-metal bonds between N-doped graphene oxide and spinel oxide nanoparticles. Co L-edge and Mn L-edge XANES suggested substitution of Co(3+) sites by Mn(3+), which increased the activity of the catalytic sites in the hybrid materials, further boosting the ORR activity compared with the pure cobalt oxide hybrid. The covalently bonded hybrid afforded much greater activity and durability than the physical mixture of nanoparticles and carbon materials including N-rmGO. At the same mass loading, the MnCo(2)O(4)/N-graphene hybrid can outperform Pt/C in ORR current density at medium overpotentials with stability superior to Pt/C in alkaline solutions.
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Affiliation(s)
- Yongye Liang
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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23
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Zhou JG, Wang J, Sun CL, Maley JM, Sammynaiken R, Sham TK, Pong WF. Nano-scale chemical imaging of a single sheet of reduced graphene oxide. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11071c] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Fan J, Chu PK. Group IV nanoparticles: synthesis, properties, and biological applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2080-98. [PMID: 20730824 DOI: 10.1002/smll.201000543] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this review, the emerging roles of group IV nanoparticles including silicon, diamond, silicon carbide, and germanium are summarized and discussed from the perspective of biologists, engineers, and medical practitioners. The synthesis, properties, and biological applications of these new nanomaterials have attracted great interest in the past few years. They have gradually evolved into promising biomaterials due to their innate biocompatibility; toxic ions are not released when they are used in vitro or in vivo, and their wide fluorescence spectral regions span the near-infrared, visible, and near-ultraviolet ranges. Additionally, they generally have good resistance against photobleaching and have lifetimes on the order of nanoseconds to microseconds, which are suitable for bioimaging. Some of the materials possess unique mechanical, chemical, or physical properties, such as ultrachemical and thermal stability, high hardness, high photostability, and no blinking. Recent data have revealed the superiority of these nanoparticles in biological imaging and drug delivery.
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Affiliation(s)
- Jiyang Fan
- Department of Physics, Southeast University, Nanjing 211189, PR China.
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