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Huang J, Zhu Z, Su P, Chen D, Zheng LR, Zou Z. A Reconfigurable Near-Sensor Processor for Anomaly Detection in Limb Prostheses. IEEE Trans Biomed Circuits Syst 2024; PP:1-14. [PMID: 38416632 DOI: 10.1109/tbcas.2024.3370571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
This paper presents a reconfigurable near-sensor anomaly detection processor to real-time monitor the potential anomalous behaviors of amputees with limb prostheses. The processor is low-power, low-latency, and suitable for equipment on the prostheses and comprises a reconfigurable Variational Autoencoder (VAE), a scalable Self-Organizing Map (SOM) Array, and a window-size-adjustable Markov Chain, which can implement an integrated miniaturized anomaly detection system. With the reconfigurable VAE, the proposed processor can support up to 64 sensor sampling channels programmable by global configuration, which can meet the anomaly detection requirements in different scenarios. A scalable SOM array allows for the selection of different sizes based on the complexity of the data. Unlike traditional time accumulation-based anomaly detection methods, the Markov Chain is utilized to detect time-series-based anomalous data. The processor is designed and fabricated in a UMC 40-nm LP technology with a core area of 1.49 mm2 and a power consumption of 1.81 mW. It achieves real-time detection performance with 0.933 average F1 Score for the FSP dataset within 24.22 μs, and 0.956 average F1 Score for the SFDLA-12 dataset within 30.48 μs, respectively. The energy dissipation of detection for each input feature is 43.84 nJ with the FSP dataset, and 55.17 nJ with the SFDLA-12 dataset. Compared with ARM Cortex-M4 and ARM Cortex-M33 microcontrollers, the processor achieves energy and area efficiency improvements ranging from 257×, 193× and 11×, 8×, respectively.
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Wang D, Xu J, Li F, Zhang L, Cao C, Stathis D, Lansner A, Hemani A, Zheng LR, Zou Z. A Memristor-Based Learning Engine for Synaptic Trace-Based Online Learning. IEEE Trans Biomed Circuits Syst 2023; 17:1153-1165. [PMID: 37390002 DOI: 10.1109/tbcas.2023.3291021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
The memristor has been extensively used to facilitate the synaptic online learning of brain-inspired spiking neural networks (SNNs). However, the current memristor-based work can not support the widely used yet sophisticated trace-based learning rules, including the trace-based Spike-Timing-Dependent Plasticity (STDP) and the Bayesian Confidence Propagation Neural Network (BCPNN) learning rules. This paper proposes a learning engine to implement trace-based online learning, consisting of memristor-based blocks and analog computing blocks. The memristor is used to mimic the synaptic trace dynamics by exploiting the nonlinear physical property of the device. The analog computing blocks are used for the addition, multiplication, logarithmic and integral operations. By organizing these building blocks, a reconfigurable learning engine is architected and realized to simulate the STDP and BCPNN online learning rules, using memristors and 180 nm analog CMOS technology. The results show that the proposed learning engine can achieve energy consumption of 10.61 pJ and 51.49 pJ per synaptic update for the STDP and BCPNN learning rules, respectively, with a 147.03× and 93.61× reduction compared to the 180 nm ASIC counterparts, and also a 9.39× and 5.63× reduction compared to the 40 nm ASIC counterparts. Compared with the state-of-the-art work of Loihi and eBrainII, the learning engine can reduce the energy per synaptic update by 11.31× and 13.13× for trace-based STDP and BCPNN learning rules, respectively.
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Jiang Z, Liu X, Liu XZ, Huang S, Liu Y, Yao ZC, Zhang Y, Zhang QH, Gu L, Zheng LR, Li L, Zhang J, Fan Y, Tang T, Zhuang Z, Hu JS. Interfacial assembly of binary atomic metal-N x sites for high-performance energy devices. Nat Commun 2023; 14:1822. [PMID: 37005416 PMCID: PMC10067952 DOI: 10.1038/s41467-023-37529-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 03/20/2023] [Indexed: 04/04/2023] Open
Abstract
Anion-exchange membrane fuel cells and Zn-air batteries based on non-Pt group metal catalysts typically suffer from sluggish cathodic oxygen reduction. Designing advanced catalyst architectures to improve the catalyst's oxygen reduction activity and boosting the accessible site density by increasing metal loading and site utilization are potential ways to achieve high device performances. Herein, we report an interfacial assembly strategy to achieve binary single-atomic Fe/Co-Nx with high mass loadings through constructing a nanocage structure and concentrating high-density accessible binary single-atomic Fe/Co-Nx sites in a porous shell. The prepared FeCo-NCH features metal loading with a single-atomic distribution as high as 7.9 wt% and an accessible site density of around 7.6 × 1019 sites g-1, surpassing most reported M-Nx catalysts. In anion exchange membrane fuel cells and zinc-air batteries, the FeCo-NCH material delivers peak power densities of 569.0 or 414.5 mW cm-2, 3.4 or 2.8 times higher than control devices assembled with FeCo-NC. These results suggest that the present strategy for promoting catalytic site utilization offers new possibilities for exploring efficient low-cost electrocatalysts to boost the performance of various energy devices.
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Affiliation(s)
- Zhe Jiang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xuerui Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiao-Zhi Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shuang Huang
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Ying Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ze-Cheng Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yun Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qing-Hua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Li
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Jianan Zhang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Youjun Fan
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China.
| | - Tang Tang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Zhongbin Zhuang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jin-Song Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Yang Y, Tang T, Lyu ZH, Zheng LR, Zhang QH, Fu J, Hu JS. Buffering the local pH via single-atomic Mn-N auxiliary sites to boost CO 2 electroreduction. Chem Sci 2022; 13:13172-13177. [PMID: 36425499 PMCID: PMC9667912 DOI: 10.1039/d2sc04776d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 10/10/2022] [Indexed: 09/08/2023] Open
Abstract
Electrocatalytic CO2 reduction driven by renewable energy has become a promising approach to rebalance the carbon cycle. Atomically dispersed transition metals anchored on N-doped carbon supports (M-N-C) have been considered as the most attractive catalysts to catalyze CO2 to CO. However, the sluggish kinetics of M-N-C limits the large-scale application of this type of catalyst. Here, it is found that the introduction of single atomic Mn-N auxiliary sites could effectively buffer the locally generated OH- on the catalytic interface of the single-atomic Ni-N-C sites, thus accelerating proton-coupled electron transfer (PCET) steps to enhance the CO2 electroreduction to CO. The constructed diatomic Ni/Mn-N-C catalysts show a CO faradaic efficiency of 96.6% and partial CO current density of 13.3 mA cm-2 at -0.76 V vs. RHE, outperforming that of monometallic single-atomic Ni-N-C or Mn-N-C counterparts. The results suggest that constructing synergistic catalytic sites to regulate the surface local microenvironment might be an attractive strategy for boosting CO2 electroreduction to value-added products.
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Affiliation(s)
- Yan Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd Hangzhou 310003 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Tang Tang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Zhen-Hua Lyu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Li-Rong Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China
| | - Qing-Hua Zhang
- Institute of Physics, Chinese Academy of Sciences Beijing 100190 China
| | - Jiaju Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Jin-Song Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Dalian National Laboratory for Clean Energy Dalian 116023 China
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Wang YC, Huang W, Wan LY, Yang J, Xie RJ, Zheng YP, Tan YZ, Wang YS, Zaghib K, Zheng LR, Sun SH, Zhou ZY, Sun SG. Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells. Sci Adv 2022; 8:eadd8873. [PMID: 36322657 PMCID: PMC9629713 DOI: 10.1126/sciadv.add8873] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
The rational design of non-Pt oxygen reduction reaction (ORR) catalysts and catalyst layers in fuel cells is largely impeded by insufficient knowledge of triple-phase boundaries (TPBs) in the micropore and mesopore ranges. Here, we developed a size-sensitive molecular probe method to resolve the TPB of Fe/N/C catalyst layers in these size ranges. More than 70% of the ORR activity was found to be contributed by the 0.8- to 2.0-nanometer micropores of Fe/N/C catalysts, even at a low micropore area fraction of 29%. Acid-alkaline interactions at the catalyst-polyelectrolyte interface deactivate the active sites in mesopores and macropores, resulting in inactive TPBs, leaving micropores without the interaction as the active TPBs. The concept of active and inactive TPBs provides a previously unidentified design principle for non-Pt catalyst and catalyst layers in fuel cells.
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Affiliation(s)
- Yu-Cheng Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
| | - Wen Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Li-Yang Wan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jian Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Rong-Jie Xie
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yan-Ping Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yuan-Zhi Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yue-Sheng Wang
- Center of Excellence in Transportation Electrification and Energy Storage, Hydro-Québec, Varennes, QC, J3X 1S1, Canada
| | - Karim Zaghib
- Department of Mining and Materials Engineering, McGill University, Montréal, QC H3A 0C5, Canada
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Shu-Hui Sun
- Institut National de la Recherche Scientifique (INRS), Centre Énergie Matériaux Télécommunications, Varennes, QC, J3X 1P7, Canada
| | - Zhi-You Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Yang Y, Fu J, Ouyang Y, Tang T, Zhang Y, Zheng LR, Zhang QH, Liu XZ, Wang J, Hu JS. In-situ Constructed Cu/CuNC Interfaces for Low-Overpotential Reduction of CO2 to Ethanol. Natl Sci Rev 2022; 10:nwac248. [PMID: 37180356 PMCID: PMC10171628 DOI: 10.1093/nsr/nwac248] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 08/25/2022] [Accepted: 09/22/2022] [Indexed: 11/06/2022] Open
Abstract
Abstract
Electrochemical CO2 reduction (ECR) to high-value multi-carbon (C2+) products is critical to sustainable energy conversion, yet the high energy barrier of C-C coupling causes catalysts to suffer high overpotential and low selectivity toward specific liquid C2+ products. Here, the electronically asymmetric Cu-Cu/Cu-N-C interface site (Cu/CuNC) is discovered by theoretical calculations to enhance the adsorption of *CO intermediates and decrease the reaction barrier of C-C coupling in ECR, enabling the efficient C-C coupling at low overpotential. The catalyst consisting of high-density Cu/CuNC interface sites (noted as ER-Cu/CuNC) is then accordingly designed and in-situ constructed on the high-loading Cu-N-C single atomic catalysts (SACs). Systematical experiments corroborate the theoretical prediction that the ER-Cu/CuNC boost electrocatalytic CO2-to-ethanol conversion with a Faradaic efficiency toward C2+ of 60.3% (FEethanol of 55%) at a low overpotential of -0.35 V. These findings provide new insights and an attractive approach to creating electronically asymmetric dual sites for efficient conversion of CO2 to C2+ products.
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Affiliation(s)
- Yan Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd , Hangzhou 310003 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jiaju Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yixin Ouyang
- School of Physics, Southeast University , Nanjing 211189 , China
| | - Tang Tang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yun Zhang
- Institute for Advanced Study, Shenzhen University , Shenzhen 518060 , China
| | - Li-Rong Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049 , China
| | - Qing-Hua Zhang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China
| | - Xiao-Zhi Liu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jinlan Wang
- School of Physics, Southeast University , Nanjing 211189 , China
| | - Jin-Song Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
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Wang XM, Wang L, Chen L, Tian LJ, Zhu TT, Wu QZ, Hu YR, Zheng LR, Li WW. AQDS Activates Extracellular Synergistic Biodetoxification of Copper and Selenite via Altering the Coordination Environment of Outer-Membrane Proteins. Environ Sci Technol 2022; 56:13786-13797. [PMID: 36098667 DOI: 10.1021/acs.est.2c04130] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The biotransformation of heavy metals in the environment is usually affected by co-existing pollutants like selenium (Se), which may lower the ecotoxicity of heavy metals, but the underlying mechanisms remain unclear. Here, we shed light on the pathways of copper (Cu2+) and selenite (SeO32-) synergistic biodetoxification by Shewanella oneidensis MR-1 and illustrate how such processes are affected by anthraquinone-2,6-disulfonate (AQDS), an analogue of humic substances. We observed the formation of copper selenide nanoparticles (Cu2-xSe) from synergistic detoxification of Cu2+ and SeO32- in the periplasm. Interestingly, adding AQDS triggered a fundamental transition from periplasmic to extracellular reaction, enabling 14.7-fold faster Cu2+ biodetoxification (via mediated electron transfer) and 11.4-fold faster SeO32- detoxification (via direct electron transfer). This is mainly attributed to the slightly raised redox potential of the heme center of AQDS-coordinated outer-membrane proteins that accelerates electron efflux from the cells. Our work offers a fundamental understanding of the synergistic detoxification of heavy metals and Se in a complicated environmental matrix and unveils an unexpected role of AQDS beyond electron mediation, which may guide the development of more efficient environmental remediation and resource recovery biotechnologies.
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Affiliation(s)
- Xue-Meng Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advance Research of USTC, Suzhou 215123, China
| | - Li Wang
- School of Life Sciences and Medical Center, University of Science & Technology of China, Hefei 230026, China
| | - Lin Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advance Research of USTC, Suzhou 215123, China
| | - Li-Jiao Tian
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
| | - Ting-Ting Zhu
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - Qi-Zhong Wu
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advance Research of USTC, Suzhou 215123, China
- School of Life Sciences and Medical Center, University of Science & Technology of China, Hefei 230026, China
| | - Yi-Rong Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advance Research of USTC, Suzhou 215123, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advance Research of USTC, Suzhou 215123, China
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Yang Y, Gao FY, Zhang XL, Qin S, Zheng LR, Wang YH, Liao J, Yang Q, Gao MR. Suppressing Electron Back‐Donation for a Highly CO‐tolerant Fuel Cell Anode Catalyst via Cobalt Modulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yu Yang
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Fei-Yue Gao
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale CHINA
| | - Xiao-Long Zhang
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Shuai Qin
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Li-Rong Zheng
- Chinese Academy of Sciences Beijing Synchrotron Radiation Facility, Institute of High Energy Physics CHINA
| | - Ye-Hua Wang
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Jie Liao
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Qing Yang
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale CHINA
| | - Min-Rui Gao
- University of Science and Technology of China Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale Jinzhai Road 96 230026 Hefei CHINA
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Li CF, Xie LJ, Zhao JW, Gu LF, Tang HB, Zheng LR, Li GR. Interfacial Fe‐O‐Ni‐O‐Fe Bonding Regulates the Active Ni Sites of Ni‐MOFs via Iron Doping and Decorating with FeOOH for Super‐Efficient Oxygen Evolution. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cheng-Fei Li
- Sun Yat-Sen University School of Chemistry No. 135, Xin-Gang West Road 510275 Guangzhou CHINA
| | - Ling-Jie Xie
- Sun Yat-Sen University School of Chemistry No. 135, Xin-Gang West Road 510275 Guangzhou CHINA
| | - Jia-Wei Zhao
- Sun Yat-Sen University School of Chemistry No. 135, Xin-Gang West Road 510275 Guangzhou CHINA
| | - Lin-Fei Gu
- Sun Yat-Sen University School of Chemistry CHINA
| | - Hai-Bo Tang
- Sun Yat-Sen University School of Chemistry No. 135, Xin-Gang West Road 510275 Guangzhou CHINA
| | - Li-Rong Zheng
- Chinese Academy of Sciences Institute of high energy physics CHINA
| | - Gao-Ren Li
- Sichuan University No.24 South Section 1, Yihuan Road 610065 Chengdu CHINA
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Li XP, Zheng LR, Liu SJ, Ouyang T, Ye S, Liu ZQ. Heterostructures of NiFe LDH hierarchically assembled on MoS2 nanosheets as high-efficiency electrocatalysts for overall water splitting. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.12.095] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Li LC, Zheng LR, Han N. Multi-slice spiral CT findings of tubulovillous adenoma of the duodenum. Clin Imaging 2021; 82:135-138. [PMID: 34813992 DOI: 10.1016/j.clinimag.2021.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/24/2021] [Accepted: 11/14/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES To analyze the appearance of duodenal tubulovillous adenoma on multi-slice spiral CT images to facilitate early diagnosis and treatment to potentially improve prognosis. METHODS We retrospectively analyzed clinical data and CT imaging findings of 11 cases of duodenal tubulovillous adenomas, all confirmed by pathology. The location, size, shape, CT density, relationship with surrounding structures, accompanying bile duct obstruction, and enhancement pattern of each lesion were documented. RESULTS All 11 lesions occurred in the descending part of the duodenum. Ten cases occurred in the duodenal papilla area. Nine cases had a low-density ring sign or semicircle sign between the lesion and the adjacent normal intestinal wall on axial images. Eight cases had differing degrees of bile duct dilatation, five of which had concomitant pancreatic duct dilatation. Noncontrast images revealed uniform soft tissue density; contrast enhanced images showed moderate, mostly uniform enhancement, with the most enhancement in the venous phase. In the arterial phase, two lesions showed linear enhancing vessels. CONCLUSIONS On multi-slice spiral CT imaging, duodenal tubulovillous adenomas have certain characteristics that could be used for clinical diagnosis and treatment. PRECIS On multi-slice spiral CT imaging of duodenal tubulovillous adenoma, findings of nodular or cauliflower-like shape, uniform density, uniform moderate enhancement, and a peripheral low-density ring sign could improve diagnostic accuracy.
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Affiliation(s)
- Li-Chao Li
- Department of CT, Tangshan Gongren Hospital, Hebei, China.
| | - Li-Rong Zheng
- Department of CT, Tangshan Gongren Hospital, Hebei, China
| | - Ning Han
- Department of CT, Tangshan Gongren Hospital, Hebei, China
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Liu PF, Wang C, Wang Y, Li Y, Zhang B, Zheng LR, Jiang Z, Zhao H, Yang HG. Grey hematite photoanodes decrease the onset potential in photoelectrochemical water oxidation. Sci Bull (Beijing) 2021; 66:1013-1021. [PMID: 36654246 DOI: 10.1016/j.scib.2021.02.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/19/2021] [Accepted: 01/28/2021] [Indexed: 01/20/2023]
Abstract
Photoelectrochemical (PEC) water splitting for solar energy conversion into chemical fuels has attracted intense research attention. The semiconductor hematite (α-Fe2O3), with its earth abundance, chemical stability, and efficient light harvesting, stands out as a promising photoanode material. Unfortunately, its electron affinity is too deep for overall water splitting, requiring additional bias. Interface engineering has been used to reduce the onset potential of hematite photoelectrode. Here we focus instead on energy band engineering hematite by shrinking the crystal lattice, and the water-splitting onset potential can be decreased from 1.14 to 0.61 V vs. the reversible hydrogen electrode. It is the lowest record reported for a pristine hematite photoanode without surface modification. X-ray absorption spectroscopy and magnetic properties suggest the redistribution of 3d electrons in the as-synthesized grey hematite electrode. Density function theory studies herein show that the smaller-lattice-constant hematite benefits from raised energy bands, which accounts for the reduced onset potential.
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Affiliation(s)
- Peng-Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chongwu Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Wang
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD 4222, Australia
| | - Yuhang Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Jiang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Huijun Zhao
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD 4222, Australia.
| | - Hua-Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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13
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Ke MK, Huang GX, Mei SC, Wang ZH, Zhang YJ, Hua TW, Zheng LR, Yu HQ. Interface-Promoted Direct Oxidation of p-Arsanilic Acid and Removal of Total Arsenic by the Coupling of Peroxymonosulfate and Mn-Fe-Mixed Oxide. Environ Sci Technol 2021; 55:7063-7071. [PMID: 33961405 DOI: 10.1021/acs.est.1c00386] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As one of the extensively used feed additives in livestock and poultry breeding, p-arsanilic acid (p-ASA) has become an organoarsenic pollutant with great concern. For the efficient removal of p-ASA from water, the combination of chemical oxidation and adsorption is recognized as a promising process. Herein, hollow/porous Mn-Fe-mixed oxide (MnFeO) nanocubes were synthesized and used in coupling with peroxymonosulfate (PMS) to oxidize p-ASA and remove the total arsenic (As). Under acidic conditions, both p-ASA and total As could be completely removed in the PMS/MnFeO process and the overall performance was substantially better than that of the Mn/Fe monometallic system. More importantly, an interface-promoted direct oxidation mechanism was found in the p-ASA-involved PMS/MnFeO system. Rather than activate PMS to generate reactive oxygen species (i.e., SO4·-, ·OH, and 1O2), the MnFeO nanocubes first adsorbed p-ASA to form a ligand-oxide interface, which improved the oxidation of the adsorbed p-ASA by PMS and ultimately enhanced the removal of the total As. Such a direct oxidation process achieved selective oxidation of p-ASA and avoidance of severe interference from the commonly present constituents in real water samples. After facile elution with dilute alkali solution, the used MnFeO nanocubes exhibited superior recyclability in the repeated p-ASA removal experiments. Therefore, this work provides a promising approach for efficient abatement of phenylarsenical-caused water pollution based on the PMS/MnFeO oxidation process.
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Affiliation(s)
- Ming-Kun Ke
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Gui-Xiang Huang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Shu-Chuan Mei
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Zhao-Hua Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Ying-Jie Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Tian-Wei Hua
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
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14
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Qin S, Duan Y, Zhang XL, Zheng LR, Gao FY, Yang PP, Niu ZZ, Liu R, Yang Y, Zheng XS, Zhu JF, Gao MR. Ternary nickel-tungsten-copper alloy rivals platinum for catalyzing alkaline hydrogen oxidation. Nat Commun 2021; 12:2686. [PMID: 33976204 PMCID: PMC8113563 DOI: 10.1038/s41467-021-22996-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/09/2021] [Indexed: 11/09/2022] Open
Abstract
Operating fuel cells in alkaline environments permits the use of platinum-group-metal-free (PGM-free) catalysts and inexpensive bipolar plates, leading to significant cost reduction. Of the PGM-free catalysts explored, however, only a few nickel-based materials are active for catalyzing the hydrogen oxidation reaction (HOR) in alkali; moreover, these catalysts deactivate rapidly at high anode potentials owing to nickel hydroxide formation. Here we describe that a nickel-tungsten-copper (Ni5.2WCu2.2) ternary alloy showing HOR activity rivals Pt/C benchmark in alkaline electrolyte. Importantly, we achieved a high anode potential up to 0.3 V versus reversible hydrogen electrode on this catalyst with good operational stability over 20 h. The catalyst also displays excellent CO-tolerant ability that Pt/C catalyst lacks. Experimental and theoretical studies uncover that nickel, tungsten, and copper play in synergy to create a favorable alloying surface for optimized hydrogen and hydroxyl bindings, as well as for the improved oxidation resistance, which result in the HOR enhancement.
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Affiliation(s)
- Shuai Qin
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Yu Duan
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Xiao-Long Zhang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Fei-Yue Gao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Peng-Peng Yang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Zhuang-Zhuang Niu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Ren Liu
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Yu Yang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Xu-Sheng Zheng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Jun-Fa Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Min-Rui Gao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China.
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15
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Li XM, Mu L, Tian M, Zheng LR, Li YY. [Characteristics, Sources, and Health Risks of Elements in PM 2.5 in Shanxi University Town]. Huan Jing Ke Xue 2020; 41:4825-4831. [PMID: 33124226 DOI: 10.13227/j.hjkx.202003011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In order to investigate the pollution characteristics and sources of elements in PM2.5 in the Shanxi University Town in 2017, an energy dispersive X-ray fluorescence spectrometer (ED-XRF) was used to analyze 21 kinds of elements in PM2.5 samples. A health risk assessment was conducted for Mn, Zn, Cu, Sb, Pb, Cr, Co, and Ni. The main sources of elements were identified by the principal component analysis (PCA) and positive matrix factorization (PMF). The results found that, among the 21 kinds of elements in PM2.5 in Shanxi University Town, the mass concentration of Ca was the highest, followed by Si, Fe, Al, S, K, and Cl. These seven elements accounted for 95.71% of the total element concentrations. The concentration of Cr exceeded the annual average concentration limit of ambient air quality standards in China by 104 times. The concentration of Ca in PM2.5 was the highest in spring, summer, and winter, while in autumn the concentration of S was the highest. Mn was the element that had non-carcinogenic risks to the three population types, and the level of risks were in the order of children > adult men > adult women. Cr and Co had tolerable carcinogenic risks, and the risk levels were in the order of adult men > adult women > children. The main sources of elements in PM2.5 in Shanxi University Town in 2017 were natural mineral dust, urban dust, coal combustion, and traffic.
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Affiliation(s)
- Xue-Mei Li
- School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Ling Mu
- School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Mei Tian
- School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Li-Rong Zheng
- School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yang-Yong Li
- School of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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16
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Wu Y, Liu L, Shi Q, Chen C, Wei J, Li JF, Zheng LR, Song HB. Retraction. Science 2020; 370:179. [PMID: 33033209 DOI: 10.1126/science.abe7205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Y Wu
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - L Liu
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Q Shi
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - C Chen
- Huazhong University of Science and Technology, Wuhan, 430074, China
| | - J Wei
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - J F Li
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - L R Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - H B Song
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
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17
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Duan Y, Yu ZY, Yang L, Zheng LR, Zhang CT, Yang XT, Gao FY, Zhang XL, Yu X, Liu R, Ding HH, Gu C, Zheng XS, Shi L, Jiang J, Zhu JF, Gao MR, Yu SH. Bimetallic nickel-molybdenum/tungsten nanoalloys for high-efficiency hydrogen oxidation catalysis in alkaline electrolytes. Nat Commun 2020; 11:4789. [PMID: 32963247 PMCID: PMC7508880 DOI: 10.1038/s41467-020-18585-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 08/25/2020] [Indexed: 11/12/2022] Open
Abstract
Hydroxide exchange membrane fuel cells offer possibility of adopting platinum-group-metal-free catalysts to negotiate sluggish oxygen reduction reaction. Unfortunately, the ultrafast hydrogen oxidation reaction (HOR) on platinum decreases at least two orders of magnitude by switching the electrolytes from acid to base, causing high platinum-group-metal loadings. Here we show that a nickel-molybdenum nanoalloy with tetragonal MoNi4 phase can catalyze the HOR efficiently in alkaline electrolytes. The catalyst exhibits a high apparent exchange current density of 3.41 milliamperes per square centimeter and operates very stable, which is 1.4 times higher than that of state-of-the-art Pt/C catalyst. With this catalyst, we further demonstrate the capability to tolerate carbon monoxide poisoning. Marked HOR activity was also observed on similarly designed WNi4 catalyst. We attribute this remarkable HOR reactivity to an alloy effect that enables optimum adsorption of hydrogen on nickel and hydroxyl on molybdenum (tungsten), which synergistically promotes the Volmer reaction.
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Affiliation(s)
- Yu Duan
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Zi-You Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Li Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | - Chu-Tian Zhang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Xiao-Tu Yang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Fei-Yue Gao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Xiao-Long Zhang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Xingxing Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Ren Liu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Hong-He Ding
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, 230029, Hefei, China
| | - Chao Gu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Xu-Sheng Zheng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, 230029, Hefei, China
| | - Lei Shi
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, 230026, Hefei, China
| | - Jun-Fa Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, 230029, Hefei, China
| | - Min-Rui Gao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China.
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials and Chemistry, University of Science and Technology of China, 230026, Hefei, China.
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18
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Wu Y, Zhu B, Huang M, Liu L, Shi Q, Akbar M, Chen C, Wei J, Li JF, Zheng LR, Kim JS, Song HB. Proton transport enabled by a field-induced metallic state in a semiconductor heterostructure. Science 2020; 369:184-188. [PMID: 32646999 DOI: 10.1126/science.aaz9139] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 03/06/2020] [Accepted: 05/26/2020] [Indexed: 11/02/2022]
Abstract
Tuning a semiconductor to function as a fast proton conductor is an emerging strategy in the rapidly developing field of proton ceramic fuel cells (PCFCs). The key challenge for PCFC researchers is to formulate the proton-conducting electrolyte with conductivity above 0.1 siemens per centimeter at low temperatures (300 to 600°C). Here we present a methodology to design an enhanced proton conductor by means of a Na x CoO2/CeO2 semiconductor heterostructure, in which a field-induced metallic state at the interface accelerates proton transport. We developed a PCFC with an ionic conductivity of 0.30 siemens per centimeter and a power output of 1 watt per square centimeter at 520°C. Through our semiconductor heterostructure approach, our results provide insight into the proton transport mechanism, which may also improve ionic transport in other energy applications.
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Affiliation(s)
- Y Wu
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - B Zhu
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China. .,Energy Storage Joint Research Center, Southeast University School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - M Huang
- Key Laboratory of Ferro and Piezoelectric Materials and Devices of Hubei Province, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China
| | - L Liu
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Q Shi
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - M Akbar
- Key Laboratory of Ferro and Piezoelectric Materials and Devices of Hubei Province, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, 430062, China
| | - C Chen
- Huazhong University of Science and Technology, Wuhan, 430074, China
| | - J Wei
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - J F Li
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - L R Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - J S Kim
- Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough LE11 3TU, UK
| | - H B Song
- Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
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19
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Zhang ZH, Lan JH, Yuan LY, Sheng PP, He MY, Zheng LR, Chen Q, Chai ZF, Gibson JK, Shi WQ. Rational Construction of Porous Metal-Organic Frameworks for Uranium(VI) Extraction: The Strong Periodic Tendency with a Metal Node. ACS Appl Mater Interfaces 2020; 12:14087-14094. [PMID: 32109047 DOI: 10.1021/acsami.0c02121] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although metal-organic frameworks (MOFs) have been reported as important porous materials for the potential utility in metal ion separation, coordinating the functionality, structure, and component of MOFs remains a great challenge. Herein, a series of anionic rare earth MOFs (RE-MOFs) were synthesized via a solvothermal template reaction and for the first time explored for uranium(VI) capture from an acidic medium. The unusually high extraction capacity of UO22+ (e.g., 538 mg U per g of Y-MOF) was achieved through ion-exchange with the concomitant release of Me2NH2+, during which the uranium(VI) extraction in the series of isostructural RE-MOFs was found to be highly sensitive to the ionic radii of the metal nodes. That is, the uranium(VI) adsorption capacities continuously increased as the ionic radii decreased. In-depth mechanism insight was obtained from molecular dynamics simulations, suggesting that both the accessible pore volume of the MOFs and hydrogen-bonding interactions contribute to the strong periodic tendency of uranium(VI) extraction.
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Affiliation(s)
- Zhi-Hui Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Jian-Hui Lan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Yong Yuan
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Pan-Pan Sheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Ming-Yang He
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Qun Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Zhi-Fang Chai
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - John K Gibson
- Chemical Sciences Division, Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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20
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Liu L, Xu J, Huan Y, Zou Z, Yeh SC, Zheng LR. A Smart Dental Health-IoT Platform Based on Intelligent Hardware, Deep Learning, and Mobile Terminal. IEEE J Biomed Health Inform 2020; 24:898-906. [DOI: 10.1109/jbhi.2019.2919916] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Deng H, Li ZJ, Wang XC, Wang L, Liu K, Yuan LY, Chang ZY, Gibson JK, Zheng LR, Chai ZF, Shi WQ. Efficient Photocatalytic Reduction of Aqueous Perrhenate and Pertechnetate. Environ Sci Technol 2019; 53:10917-10925. [PMID: 31432660 DOI: 10.1021/acs.est.9b03199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The pertechnetate anion (99TcO4-) is a long-lived radioactive species that is soluble in aqueous solution, in contrast to sparingly soluble 99TcO2. Results are reported for photocatalytic reduction and removal of perrhenate (ReO4-), a nonradioactive surrogate for 99TcO4-, using a TiO2 (P25) nanoparticle suspension in formic acid under UV-visible irradiation. Re(VII) removal up to 98% was achieved at pH = 3 under air or N2. The proposed mechanism is Re(VII)/Re(IV) reduction mediated by reducing radicals (·CO2-) from oxidation of formic acid, not direct reduction by photogenerated electrons of TiO2. Recycling results indicate that photocatalytic reduction of ReO4- exhibits excellent regeneration and high activity with >95% removal even after five cycles. 99Tc(VII) is more easily reduced than Re(VII) in the presence of NO3- with very slow redissolution of reduced 99Tc. This study presents a novel method for the removal of ReO4-/99TcO4- from aqueous solution, with potential application for deep geological disposal.
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Affiliation(s)
- Hao Deng
- Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China
| | | | | | | | | | | | - Zhi-Yuan Chang
- Department of Radiochemistry , China Institute of Atomic Energy , Beijing 102413 , China
| | - John K Gibson
- Chemical Sciences Division , Lawrence Berkeley National Laboratory (LBNL) , Berkeley , California 94720 , United States
| | | | - Zhi-Fang Chai
- Engineering Laboratory of Advanced Energy Materials , Ningbo Institute of Industrial Technology, Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China
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22
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Zhang CJ, Chi JF, Zheng LR, Guo HY. [Research progress on the treatment of cryptogenic stroke with patent foramen ovale]. Zhonghua Nei Ke Za Zhi 2019; 58:701-704. [PMID: 31461825 DOI: 10.3760/cma.j.issn.0578-1426.2019.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C J Zhang
- Zhejiang University School of Medicine, Hangzhou 310016, China
| | - J F Chi
- Department of Cardiology, Shaoxing People's Hospital(Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - L R Zheng
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University, Hangzhou 310003, China
| | - H Y Guo
- Department of Cardiology, Shaoxing People's Hospital(Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
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23
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Liu YL, Yuan LY, Zheng LR, Wang L, Yao BL, Chai ZF, Shi WQ. Confirmation and elimination of cyclic electrolysis of uranium ions in molten salts. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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24
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Tian LJ, Min Y, Li WW, Chen JJ, Zhou NQ, Zhu TT, Li DB, Ma JY, An PF, Zheng LR, Huang H, Liu YZ, Yu HQ. Substrate Metabolism-Driven Assembly of High-Quality CdS xSe 1- x Quantum Dots in Escherichia coli: Molecular Mechanisms and Bioimaging Application. ACS Nano 2019; 13:5841-5851. [PMID: 30969107 DOI: 10.1021/acsnano.9b01581] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Biosynthesis offers opportunities for cost-effective and sustainable production of semiconductor quantum dots (QDs), but is currently restricted by poor controllability on the synthesis process, resulting from limited knowledge on the assembly mechanisms and the lack of effective control strategies. In this work, we provide molecular-level insights into the formation mechanism of biogenic QDs (Bio-QDs) and its connection with the cellular substrate metabolism in Escherichia coli. Strengthening the substrate metabolism for producing more reducing power was found to stimulate the production of several reduced thiol-containing proteins (including glutaredoxin and thioredoxin) that play key roles in Bio-QDs assembly. This effectively diverted the transformation route of the selenium (Se) and cadmium (Cd) metabolic from Cd3(PO4)2 formation to CdS xSe1- x QDs assembly, yielding fine-sized (2.0 ± 0.4 nm), high-quality Bio-QDs with quantum yield (5.2%) and fluorescence lifetime (99.19 ns) far exceeding the existing counterparts. The underlying mechanisms of Bio-QDs crystallization and development were elucidated by density functional theory calculations and molecular dynamics simulation. The resulting Bio-QDs were successfully used for bioimaging of cancer cells and tumor tissue of mice without extra modification. Our work provides fundamental knowledge on the Bio-QDs assembly mechanisms and proposes an effective, facile regulation strategy, which may inspire advances in controlled synthesis and practical applications of Bio-QDs as well as other bionanomaterials.
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Affiliation(s)
- Li-Jiao Tian
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yuan Min
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jie-Jie Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Nan-Qing Zhou
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Ting-Ting Zhu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Dao-Bo Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jing-Yuan Ma
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics , Chinese Academy of Sciences , Shanghai 201204 , China
| | - Peng-Fei An
- Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics , Chinese Academy of Science , Beijing 100049 , China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics , Chinese Academy of Science , Beijing 100049 , China
| | - Hai Huang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yang-Zhong Liu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
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25
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Huang ZW, Li ZJ, Zheng LR, Wu WS, Chai ZF, Shi WQ. Adsorption of Eu(III) and Th(IV) on three-dimensional graphene-based macrostructure studied by spectroscopic investigation. Environ Pollut 2019; 248:82-89. [PMID: 30780070 DOI: 10.1016/j.envpol.2019.01.050] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/09/2019] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
One of the most important reasons for the controversy over the development of nuclear energy is the proper disposal of spent fuel. Separation of actinide and lanthanide ions is an important part of safe long-term storage of radioactive waste. Herein, a three-dimensional (3D) graphene-based macrostructure (GOCS) was utilized to remove actinide thorium and lanthanide europium ions from aqueous solutions. The adsorption of Eu(III) and Th(IV) on the GOCS was evaluated as a function of adsorption time, solution pH, initial ion concentrations, and ionic strength. The experimentally determined maximum adsorption capacities of this GOCS for Eu(III) (pH 6.0) and Th(IV) (pH 3.0) are as high as 150 and 220 mg/g, respectively. By using Fourier transformation infrared (FT-IR), X-ray photoelectron (XPS), and extended X-ray absorption fine structure (EXAFS) spectroscopy, we concluded that the Eu(III) and Th(IV) adsorption was predominantly attributed to the inner-sphere coordination with various oxygen- and nitrogen-containing functional groups on GOCS surfaces. Our selective adsorption results demonstrate that the actinide and lanthanide ions can be effectively separated from transition metal ions. This study provides new clues to the overall recycling of actinide and lanthanide ions in radioactive environmental pollution treatments.
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Affiliation(s)
- Zhi-Wei Huang
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China; Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zi-Jie Li
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Wang-Suo Wu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China
| | - Zhi-Fang Chai
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
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26
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Wang C, Qin Y, Jin H, Kim I, Granados Vergara JD, Dong C, Jiang Y, Zhou Q, Li J, He Z, Zou Z, Zheng LR, Wu X, Wang Y. A Low Power Cardiovascular Healthcare System With Cross-Layer Optimization From Sensing Patch to Cloud Platform. IEEE Trans Biomed Circuits Syst 2019; 13:314-329. [PMID: 30640626 DOI: 10.1109/tbcas.2019.2892334] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nowadays, cardiovascular disease is still one of the primary diseases that limit life expectation of humans. To address this challenge, this work reports an Internet of Medical Things (IoMT)-based cardiovascular healthcare system with cross-layer optimization from sensing patch to cloud platform. A wearable ECG patch with a custom System-on-Chip (SoC) features a miniaturized footprint, low power consumption, and embedded signal processing capability. The patch also integrates wireless connectivity with mobile devices and cloud platform for optimizing the complete system. On the big picture, a "wearable patch-mobile-cloud" hybrid computing framework is proposed with cross-layer optimization for performance-power trade-off in embedded-computing. The measurement results demonstrate that the on-patch compression ratio of the raw ECG signal can reach 12.07 yielding a percentage root mean square variation of 2.29%. In the test with the MIT-BIH database, the average improvement of signal to noise ratio and mean square error are 12.63 dB and 94.47%, respectively. The average accuracy of disease prediction operation executed in cloud platform is 97%.
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Yang YM, Li ZY, Zhang JY, Lu Y, Guo SQ, Zhao Q, Wang X, Yong ZJ, Li H, Ma JP, Kuroiwa Y, Moriyoshi C, Hu LL, Zhang LY, Zheng LR, Sun HT. X-ray-activated long persistent phosphors featuring strong UVC afterglow emissions. Light Sci Appl 2018; 7:88. [PMID: 30455871 PMCID: PMC6234205 DOI: 10.1038/s41377-018-0089-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 05/12/2023]
Abstract
Phosphors emitting visible and near-infrared persistent luminescence have been explored extensively owing to their unusual properties and commercial interest in their applications such as glow-in-the-dark paints, optical information storage, and in vivo bioimaging. However, no persistent phosphor that features emissions in the ultraviolet C range (200-280 nm) has been known to exist so far. Here, we demonstrate a strategy for creating a new generation of persistent phosphor that exhibits strong ultraviolet C emission with an initial power density over 10 milliwatts per square meter and an afterglow of more than 2 h. Experimental characterizations coupled with first-principles calculations have revealed that structural defects associated with oxygen introduction-induced anion vacancies in fluoride elpasolite can function as electron traps, which capture and store a large number of electrons triggered by X-ray irradiation. Notably, we show that the ultraviolet C afterglow intensity of the yielded phosphor is sufficiently strong for sterilization. Our discovery of this ultraviolet C afterglow opens up new avenues for research on persistent phosphors, and it offers new perspectives on their applications in terms of sterilization, disinfection, drug release, cancer treatment, anti-counterfeiting, and beyond.
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Affiliation(s)
- Yan-Min Yang
- College of Physics Science and Technology, Hebei University, 071002 Baoding, China
| | - Zhi-Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Jiangsu, China
| | - Jun-Ying Zhang
- Department of Physics, Beihang University, 100191 Beijing, China
| | - Yue Lu
- Department of Physics, Beihang University, 100191 Beijing, China
| | - Shao-Qiang Guo
- Department of Physics, Beihang University, 100191 Beijing, China
| | - Qing Zhao
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526 Japan
| | - Xin Wang
- College of Physics Science and Technology, Hebei University, 071002 Baoding, China
| | - Zi-Jun Yong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Jiangsu, China
| | - Hong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Jiangsu, China
| | - Ju-Ping Ma
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Jiangsu, China
| | - Yoshihiro Kuroiwa
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526 Japan
| | - Chikako Moriyoshi
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526 Japan
| | - Li-Li Hu
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, China
| | - Li-Yan Zhang
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
| | - Hong-Tao Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Jiangsu, China
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28
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Chen FD, Chen HH, Ke SC, Zheng LR, Zheng XY. SLC27A2 regulates miR-411 to affect chemo-resistance in ovarian cancer. Neoplasma 2018; 65:915-924. [PMID: 30334452 DOI: 10.4149/neo_2018_180122n48] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/02/2018] [Indexed: 11/08/2022]
Abstract
Although platinum-based chemotherapies have long been used as standard treatment in ovarian cancer, cisplatin resistance is a major problem that restricts its use. Herein, we investigate the biological function of SLC27A2 and its underlying mechanisms in regulating chemo-resistance in ovarian cancer. The findings show that SLC27A2 down-regulation in primary ovarian cancer tissues correlates with chemo-resistance and poor patient survival in our patient cohort. Significantly, we demonstrate that up-regulation of SLC27A2 by lentivirus-mediated p-SLC27A2 sensitizes ovarian cancer cells to cisplatin in vitro and in vivo via apoptosis. Mechanistic investigation reveals that miR-411 is the most strikingly over-expressed gene in response to ectopic expression of SLC27A2, but under-expressed in recurrent ovarian cancer tissues. Lower miR-411 expression contributes to ovarian cancer chemo-resistance in vitro and in vivo. Furthermore, SLC27A2 directly binds specific sites in the miR-411 promoter region and promoter activity decreases after mutation of putative SLC27A2-binding sites. This indicates that SLC27A2 is required for the transcriptional induction of miR-411. The luciferase assays also confirm that miR-411 directly targets ABCG2 in ovarian cancer, and overall findings establish the SLC27A2-miR-411-ABCG2 pathway in the regulation of ovarian cancer chemo-resistance with potential therapeutic applications.
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Affiliation(s)
- F D Chen
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - H H Chen
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - S C Ke
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - L R Zheng
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - X Y Zheng
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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29
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Yong ZJ, Guo SQ, Ma JP, Zhang JY, Li ZY, Chen YM, Zhang BB, Zhou Y, Shu J, Gu JL, Zheng LR, Bakr OM, Sun HT. Doping-Enhanced Short-Range Order of Perovskite Nanocrystals for Near-Unity Violet Luminescence Quantum Yield. J Am Chem Soc 2018; 140:9942-9951. [DOI: 10.1021/jacs.8b04763] [Citation(s) in RCA: 425] [Impact Index Per Article: 70.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zi-Jun Yong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Shao-Qiang Guo
- Department of Physics, Beihang University, Beijing, 100191, China
| | - Ju-Ping Ma
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Jun-Ying Zhang
- Department of Physics, Beihang University, Beijing, 100191, China
| | - Zhi-Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Ya-Meng Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Bin-Bin Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
| | - Yang Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jie Shu
- Analysis and Testing Center, Soochow University, Jiangsu, 215123, China
| | - Jia-Li Gu
- Analysis and Testing Center, Soochow University, Jiangsu, 215123, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Osman M. Bakr
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Hong-Tao Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China
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30
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Zhou DD, Zhao Q, Zhu FP, Zhang ZG, Zhou Y, Yong ZJ, Ma JP, Kuroiwa Y, Moriyoshi C, Fang YZ, Gu JL, Shu J, Li ZY, Chen JM, Zheng LR, Sun HT. Ion-Exchangeable Microporous Polyoxometalate Compounds with Off-Center Dopants Exhibiting Unconventional Luminescence. Chemistry 2018; 24:9976-9982. [PMID: 29683534 DOI: 10.1002/chem.201801829] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Indexed: 11/05/2022]
Abstract
The synthesis of luminescent polyoxometalates (POMs) typically relies on the assembly of POM ligands with rare earth or transition metals, placing significant constraints on the composition, structure, and hence the luminescence properties of the resultant systems. Herein, we show that the ion-exchange strategy can be used for the synthesis of novel POM-based luminescent materials. We demonstrate that introducing bismuth ions into an ion-exchangeable, microporous POM compound yields an unconventional system luminescing in the near-infrared region. Experimental characterization, coupled with quantum chemical calculations, confirms that bismuth ions site-specifically occupy an off-center site in the lattice, and have an asymmetric coordination geometry unattainable by other means, thus giving rise to peculiar emission. Our findings offer an effective strategy for the synthesis of POM-based luminescent materials, and the design concept may potentially be adapted to the creation of POM-based systems with other functionalities.
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Affiliation(s)
- Dan-Dan Zhou
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Qing Zhao
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Fu-Ping Zhu
- School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, P.R. China
| | - Zhi-Gang Zhang
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Yang Zhou
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Zi-Jun Yong
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Ju-Ping Ma
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yoshihiro Kuroiwa
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Chikako Moriyoshi
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Yong-Zheng Fang
- School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, P.R. China
| | - Jia-Li Gu
- Analysis and Testing Center, Soochow University, Suzhou, 215123, P.R. China
| | - Jie Shu
- Analysis and Testing Center, Soochow University, Suzhou, 215123, P.R. China
| | - Zhi-Yong Li
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Jian-Mei Chen
- Institute of Functional Nano & Soft Materials (FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P.R. China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Hong-Tao Sun
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
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31
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Li H, Zhao Q, Liu BM, Zhang JY, Li ZY, Guo SQ, Ma JP, Kuroiwa Y, Moriyoshi C, Zheng LR, Sun HT. Transformation of Perovskite BaBiO 3 into Layered BaBiO 2.5 Crystals Featuring Unusual Chemical Bonding and Luminescence. Chemistry 2018; 24:8875-8882. [PMID: 29655241 DOI: 10.1002/chem.201801257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/09/2018] [Indexed: 11/09/2022]
Abstract
Engineering oxygen coordination environments of cations in oxides has received intense interest thanks to the opportunities for the discovery of novel oxides with unusual properties. Herein, the synthesis of stoichiometric layered BaBiO2.5 by a nontopotactic phase transformation of perovskite BaBiO3 is presented. By analyzing the synchrotron X-ray diffraction data by the maximum-entropy method/Rietveld technique, it was found that Bi is involved in an unusual chemical bonding situation with four oxygen atoms featuring one ionic bond and three covalent bonds, which results in an asymmetric coordination geometry. Photophysical characterization revealed that this peculiar structure shows near-infrared luminescence differing from that of conventional Bi-containing compounds. Experimental and theoretical results led to the proposal of an excitonic nature of the luminescence. This work highlights that synthesizing materials with uncommon Bi-O bonding and Bi coordination geometry provides a pathway to the discovery of systems with new functionalities. This could inspire interest in the exploration of a range of materials containing heavier p-block elements with prospects for finding systems with unusual properties.
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Affiliation(s)
- Hong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Qing Zhao
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Bo-Mei Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Jun-Ying Zhang
- Department of Physics, Beihang University, Beijing, 100191, P.R. China
| | - Zhi-Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Shao-Qiang Guo
- Department of Physics, Beihang University, Beijing, 100191, P.R. China
| | - Ju-Ping Ma
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yoshihiro Kuroiwa
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Chikako Moriyoshi
- Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8526, Japan
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Hong-Tao Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
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32
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Xiong Q, Wang Y, Liu PF, Zheng LR, Wang G, Yang HG, Wong PK, Zhang H, Zhao H. Cobalt Covalent Doping in MoS 2 to Induce Bifunctionality of Overall Water Splitting. Adv Mater 2018; 30:e1801450. [PMID: 29808597 DOI: 10.1002/adma.201801450] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 04/12/2018] [Indexed: 05/22/2023]
Abstract
The layer-structured MoS2 is a typical hydrogen evolution reaction (HER) electrocatalyst but it possesses poor activity for the oxygen evolution reaction (OER). In this work, a cobalt covalent doping approach capable of inducing HER and OER bifunctionality into MoS2 for efficient overall water splitting is reported. The results demonstrate that covalently doping cobalt into MoS2 can lead to dramatically enhanced HER activity while simultaneously inducing remarkable OER activity. The catalyst with optimal cobalt doping density can readily achieve HER and OER onset potentials of -0.02 and 1.45 V (vs reversible hydrogen electrode (RHE)) in 1.0 m KOH. Importantly, it can deliver high current densities of 10, 100, and 200 mA cm-2 at low HER and OER overpotentials of 48, 132, 165 mV and 260, 350, 390 mV, respectively. The reported catalyst activation approach can be adapted for bifunctionalization of other transition metal dichalcogenides.
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Affiliation(s)
- Qizhong Xiong
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Yun Wang
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD, 4222, Australia
| | - Peng-Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, China
| | - Guozhong Wang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
| | - Hua-Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Po-Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
| | - Huijun Zhao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD, 4222, Australia
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Liu H, Mei Q, Li S, Yang Y, Wang Y, Liu H, Zheng L, An P, Zhang J, Han B. Selective hydrogenation of unsaturated aldehydes over Pt nanoparticles promoted by the cooperation of steric and electronic effects. Chem Commun (Camb) 2018; 54:908-911. [DOI: 10.1039/c7cc08942b] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols can reach high selectivity and activity at room temperature using Pt nanoparticles immobilized on a non-porous Al2O3 support stabilized by aspartic acid.
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Tu L, Yuan S, Xu J, Yang K, Wang P, Cui X, Zhang X, Wang J, Zhan YQ, Zheng LR. A wide-range operating synaptic device based on organic ferroelectricity with low energy consumption. RSC Adv 2018; 8:26549-26553. [PMID: 35541067 PMCID: PMC9083020 DOI: 10.1039/c8ra04403a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 07/13/2018] [Indexed: 11/21/2022] Open
Abstract
In this work, a wide-range operating synaptic device based on organic ferroelectricity has been demonstrated. The device possesses a simple two-terminal structure by using a ferroelectric phase-separated polymer blend as the active layer and gold/indium tin oxide (ITO) as the top/bottom electrodes, and exhibits a distinctive history-dependent resistive switching behavior at room temperature. And the device with low energy consumption (∼50 fJ μm−2 per synaptic event) can provide a reliable synaptic function of potentiation, depression and the complex memory behavior simulation of differential responses to diverse stimulations. In addition, using simulations, the accuracy of 32 × 32 pixel image recognition is improved from 76.21% to 85.06% in the classical model Cifar-10 with 1024 levels of the device, which is an important step towards the higher performance goal in image recognition based on memristive neuromorphic networks. The two-terminal synaptic device based on organic ferroelectricity with low energy consumption can provide reliable synaptic function.![]()
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Guo LH, Guo L, Zhao DY, Gao ZN, Tian Y, Ding T, Zhang J, Zheng LR, Li XG. Oxidizing, trapping and releasing NO x over model manganese oxides in alternative lean-burn/fuel-rich atmospheres at low temperatures. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.05.096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Qin HB, Zhu JM, Lin ZQ, Xu WP, Tan DC, Zheng LR, Takahashi Y. Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy. Environ Pollut 2017; 225:361-369. [PMID: 28314620 DOI: 10.1016/j.envpol.2017.02.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 06/06/2023]
Abstract
Selenium (Se) speciation in soil is critically important for understanding the solubility, mobility, bioavailability, and toxicity of Se in the environment. In this study, Se fractionation and chemical speciation in agricultural soils from seleniferous areas were investigated using the elaborate sequential extraction and X-ray absorption near-edge structure (XANES) spectroscopy. The speciation results quantified by XANES technique generally agreed with those obtained by sequential extraction, and the combination of both approaches can reliably characterize Se speciation in soils. Results showed that dominant organic Se (56-81% of the total Se) and lesser Se(IV) (19-44%) were observed in seleniferous agricultural soils. A significant decrease in the proportion of organic Se to the total Se was found in different types of soil, i.e., paddy soil (81%) > uncultivated soil (69-73%) > upland soil (56-63%), while that of Se(IV) presented an inverse tendency. This suggests that Se speciation in agricultural soils can be significantly influenced by different cropping systems. Organic Se in seleniferous agricultural soils was probably derived from plant litter, which provides a significant insight for phytoremediation in Se-laden ecosystems and biofortification in Se-deficient areas. Furthermore, elevated organic Se in soils could result in higher Se accumulation in crops and further potential chronic Se toxicity to local residents in seleniferous areas.
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Affiliation(s)
- Hai-Bo Qin
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Jian-Ming Zhu
- State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China.
| | - Zhi-Qing Lin
- Environmental Sciences Program and Department of Biological Sciences, Southern Illinois University, Edwardsville, IL 62026-1099, USA
| | - Wen-Po Xu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - De-Can Tan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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Li ZJ, Huang ZW, Guo WL, Wang L, Zheng LR, Chai ZF, Shi WQ. Enhanced Photocatalytic Removal of Uranium(VI) from Aqueous Solution by Magnetic TiO 2/Fe 3O 4 and Its Graphene Composite. Environ Sci Technol 2017. [PMID: 28409920 DOI: 10.1021/acs.est.6b05313r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The separation and recovery of uranium from radioactive wastewater is important from the standpoints of environmental protection and uranium reuse. In the present work, magnetically collectable TiO2/Fe3O4 and its graphene composites were fabricated and utilized for the photocatalytical removal of U(VI) from aqueous solutions. It was found that, under ultraviolet (UV) irradiation, the photoreactivity of TiO2/Fe3O4 for the reduction of U(VI) was 19.3 times higher than that of pure TiO2, which is strongly correlated with the Fe0 and additional Fe(II) generated from the reduction of Fe3O4 by TiO2 photoelectrons. The effects of initial uranium concentration, solution pH, ionic strength, the composition of wastewater, and organic pollutants on the U(VI) removal by TiO2/Fe3O4 were systematically investigated. The results demonstrated its excellent performance in the cleanup of uranium contamination. As graphene can efficiently attract the TiO2 photoelectrons and thus decrease their transfer to Fe3O4, the photodissolution of Fe3O4 in the TiO2/graphene/Fe3O4 composite can be largely alleviated compared to that of the TiO2/Fe3O4, rendering this ternary composite a much higher stability. In addition, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray absorption near edge spectroscopy (XANES), and X-ray photoelectron spectroscopy (XPS) were used to explore the reaction mechanisms.
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Affiliation(s)
- Zi-Jie Li
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Zhi-Wei Huang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Wen-Lu Guo
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Lin Wang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Zhi-Fang Chai
- School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
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Li ZJ, Huang ZW, Guo WL, Wang L, Zheng LR, Chai ZF, Shi WQ. Enhanced Photocatalytic Removal of Uranium(VI) from Aqueous Solution by Magnetic TiO 2/Fe 3O 4 and Its Graphene Composite. Environ Sci Technol 2017; 51:5666-5674. [PMID: 28409920 DOI: 10.1021/acs.est.6b05313] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The separation and recovery of uranium from radioactive wastewater is important from the standpoints of environmental protection and uranium reuse. In the present work, magnetically collectable TiO2/Fe3O4 and its graphene composites were fabricated and utilized for the photocatalytical removal of U(VI) from aqueous solutions. It was found that, under ultraviolet (UV) irradiation, the photoreactivity of TiO2/Fe3O4 for the reduction of U(VI) was 19.3 times higher than that of pure TiO2, which is strongly correlated with the Fe0 and additional Fe(II) generated from the reduction of Fe3O4 by TiO2 photoelectrons. The effects of initial uranium concentration, solution pH, ionic strength, the composition of wastewater, and organic pollutants on the U(VI) removal by TiO2/Fe3O4 were systematically investigated. The results demonstrated its excellent performance in the cleanup of uranium contamination. As graphene can efficiently attract the TiO2 photoelectrons and thus decrease their transfer to Fe3O4, the photodissolution of Fe3O4 in the TiO2/graphene/Fe3O4 composite can be largely alleviated compared to that of the TiO2/Fe3O4, rendering this ternary composite a much higher stability. In addition, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray absorption near edge spectroscopy (XANES), and X-ray photoelectron spectroscopy (XPS) were used to explore the reaction mechanisms.
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Affiliation(s)
- Zi-Jie Li
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Zhi-Wei Huang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Wen-Lu Guo
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Lin Wang
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
| | - Zhi-Fang Chai
- School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - Wei-Qun Shi
- Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing, 100049, China
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Ding H, Fu YJ, Zheng LR, Chen J, Shi XQ. [Neuroprotection Mechanism of Lidocaine in Rabbits with Early Brain Injury Resulted from Subarachnoid Hemorrhage]. Sichuan Da Xue Xue Bao Yi Xue Ban 2017; 48:230-233. [PMID: 28612532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVES To determine the neuroprotection mechanism of lidocaine on early brain injury resulted from subarachnoid hemorrhage. METHODS Eighteen New Zealand white rabbits were randomly divided into three groups: Sham group, subarachnoid hemorrhage (SAH) group and lidocaine treatment (LD) group. Operations were performed on all animals under anesthesia. Autologous nonheparinized arterial blood (1 mL/kg, body mass) was injected into cisterna magna of rabbits in the SAH and LD groups, while saline (1 mL/kg, body mass) was given to rabbits in the sham group. Thirty minutes later, intravenous injection of 0.6 mL 20 mg/mL lidocaine was given to those in the LD group, and intravenous injection of 0.6 mL saline was given to those in the Sham and SAH groups. Food intake and neurological impairments of the rabbits were assessed 72 h after the induction of SAH. The protein and mRNA experssions of Caspase-3 and cytochrome-c (Cyt-c) in hippocampus tissues were detected using real-time PCR (RT-PCR) and Western blot. RESULTS Rabbits in the SAH and LD groups had lower food intake and higher mRNA and protein expressions of Caspase-3 and Cyt-c than those in the sham groups, which was accompanied with varying degrees of neurological impairments. No significant differences in food intake and neurological impairments were found between the SAH and LD groups (P >0.05). However, rabbits in the LD group had lower levels of mRNA and protein expressions of Caspase-3 and Cyt-c than those in the SAH group (P <0.05). CONCLUSION The neuroprotection mechanism of lidocaine on early brain injury in rabbits with subarachnoid hemorrhage may be associated with inhibition of mitochondrial pathway and downregulated mRNA and protein expressions of Caspase-3 and Cyt-c in brain tissues.
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Affiliation(s)
- Hao Ding
- Department of ICU, School of Clinical Medicine, Guizhou Medcial University, Guiyang 550004, China
| | - Yong-Jian Fu
- Department of ICU, Guizhou Provincal People!/ Hospital, Guiyang 550002, China
| | - Li-Rong Zheng
- Department of ICU, School of Clinical Medicine, Guizhou Medcial University, Guiyang 550004, China
| | - Jin Chen
- Department of ICU, School of Clinical Medicine, Guizhou Medcial University, Guiyang 550004, China
| | - Xian-Qing Shi
- Department of ICU, Guizhou Provincal People!/ Hospital, Guiyang 550002, China
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Shi XQ, Fu YJ, Zheng LR. [Comparison of Two Methods of Lidocaine Administrating for Neuroprotection in Rabbit Model of Subarachnoid Hemorrhage]. Sichuan Da Xue Xue Bao Yi Xue Ban 2017; 48:120-123. [PMID: 28612572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVES To compare the neuroprotection effect of two methods of Lidocaine administration in rabbit model of subarachnoid hemorrhage. METHODS Forty New Zealand white rabbits were randomly divided into sham group, subarachnoid hemorrhage group (SAH), Lidocaine intravenous injection group (L1), and Lidocaine intracisternal administration group (L2). The rabbits were given general anaesthesia, then 1.5 mL autologous nonheparinized arterial blood was injected into cisterna magna to establish SAH model, while 1.5 mL saline was used in sham group. Thirty minutes later, the rabbits in L1 and L2 group respectively received 0.3 mL 2% Lidocaine administration of intravenously and intracisternally injection. All animals were sacrificed at 72 h after SAH. The samples of basilar artery and hippocampus tissue were processed for morphometric analysis. At pre-operation and 72 h after SAH, the level of interleukin-6 (IL-6) in serum was measured. HE staining and C fos immunohistochemical staining were performed in L1 and L2 groups. Artery area and artery diameter of basal arteries, normal neuron density and C-fos positive cell in hippocampus were measured at 72 h after SAH. RESULTS The baseline level of IL-6 was not significant different in four groups (P>0.05). The level of IL-6 at 72 h after SAH was significantly higher than that at pre-operation in SAH, L1 and L2 groups (P<0.05), while the level of IL-6 in SAH and L1 group was higher than that in L2 group (P<0.05). Compared to sham and L2 group, the cross-section area and diameter of basal artery were smaller in SAH and L1 group, while the normal neuron density of hippocampus was less (P<0.05). CONCLUSIONS Intracisternal administration of Lidocaine could provide neuroprotection in rabbit model of subarachnoid hemorrhage.
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Affiliation(s)
- Xian-Qing Shi
- ICU Department of Guizhou Province People Hospital, Guiyang 550002, China
| | - Yong-Jian Fu
- ICU Department of Guizhou Province People Hospital, Guiyang 550002, China
| | - Li-Rong Zheng
- The Graduate School of Guizhou Medical University, Guiyang 550002, China
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Lee SH, Yeh SC, Chan RC, Chen S, Yang G, Zheng LR. Motor Ingredients Derived from a Wearable Sensor-Based Virtual Reality System for Frozen Shoulder Rehabilitation. Biomed Res Int 2016; 2016:7075464. [PMID: 27642600 PMCID: PMC5011756 DOI: 10.1155/2016/7075464] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/30/2016] [Accepted: 07/26/2016] [Indexed: 11/17/2022]
Abstract
Objective. This study aims to extract motor ingredients through data mining from wearable sensors in a virtual reality goal-directed shoulder rehabilitation (GDSR) system and to examine their effects toward clinical assessment. Design. A single-group before/after comparison. Setting. Outpatient research hospital. Subjects. 16 patients with frozen shoulder. Interventions. The rehabilitation treatment involved GDSR exercises, hot pack, and interferential therapy. All patients first received hot pack and interferential therapy on the shoulder joints before engaging in the exercises. The GDSR exercise sessions were 40 minutes twice a week for 4 weeks. Main Measures. Clinical assessments included Constant and Murley score, range of motion of the shoulder, and muscle strength of upper arm as main measures. Motor indices from sensor data and task performance were measured as secondary measures. Results. The pre- and posttest results for task performance, motor indices, and the clinical assessments indicated significant improvement for the majority of the assessed items. Correlation analysis between the task performance and clinical assessments revealed significant correlations among a number of items. Stepwise regression analysis showed that task performance effectively predicted the results of several clinical assessment items. Conclusions. The motor ingredients derived from the wearable sensor and task performance are applicable and adequate to examine and predict clinical improvement after GDSR training.
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Affiliation(s)
- Si-Huei Lee
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Shih-Ching Yeh
- School of Information Science and Technology, Fudan University, Shanghai, China
| | - Rai-Chi Chan
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Shuya Chen
- Department of Physical Therapy, China Medical University, Taichung, Taiwan
| | - Geng Yang
- School of Information Science and Technology, Fudan University, Shanghai, China
| | - Li-Rong Zheng
- School of Information Science and Technology, Fudan University, Shanghai, China
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Zhao YJ, Chen WX, Wu DS, Zhang WY, Zheng LR. Differentiation of mass-forming intrahepatic cholangiocarcinoma from poorly differentiated hepatocellular carcinoma: based on the multivariate analysis of contrast-enhanced computed tomography findings. Abdom Radiol (NY) 2016; 41:978-89. [PMID: 27193795 DOI: 10.1007/s00261-015-0629-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE We aim to gain further insight into identifying differential radiological features of mass-forming intrahepatic cholangiocarcinoma (mICC) from poorly differentiated hepatocellular carcinoma (pHCC) on contrast-enhanced computed tomography (CT). MATERIALS AND METHODS 107 patients with pathologically confirmed mICC (n = 48) and pHCC (n = 59) who had undergone preoperative contrast-enhanced CT were enrolled. Qualitative analysis of CT images were evaluated for tumor demarcation, shape, presence of satellite nodules, capsular retraction, biliary involvement, intratumoral arteries, tortuous tumoral vessels, vascular invasion, portal vein tumor thrombus, arterial enhancement pattern, portal venous phase enhancement, and washout pattern. Quantitative analysis was performed for mean attenuation of tumor and tumor-to-liver contrast during each phase. The degree of arterial enhancement was graded based on quantitative measurements. RESULTS A lobulated shape, indistinct margin, peripheral rim enhancement in the arterial phase, and the presence of bile duct dilatation were CT features favoring mICC, whereas a round shape, partially indistinct margin, heterogeneous enhancement in the arterial phase, washout pattern and the presence of tortuous tumoral vessels were CT features favoring pHCC in the univariate analysis (P < 0.05). Tumor-to-liver contrast of pHCC was greater than that of mICC during the arterial phase (P = 0.015). In the multivariate analysis, bile duct dilatation, tortuous tumoral vessels, and a washout pattern were independent CT features for distinguishing between the two types. (P = 0.003, P = 0.003, P = 0.044, respectively). CONCLUSION The absence of a washout pattern and tortuous tumoral vessels and presence of bile duct dilatation are more indicative of mICC than of pHCC on contrast-enhanced CT.
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Affiliation(s)
- Yi-Jun Zhao
- Department of Radiology, West China Hospital of Sichuan University, NO. 37, Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Wei-Xia Chen
- Department of Radiology, West China Hospital of Sichuan University, NO. 37, Guoxue Alley, Chengdu, 610041, Sichuan, China.
| | - Dong-Sheng Wu
- Department of Radiology, No. 4 West China Hospital of Sichuan University, NO. 18, South Renmin Road, Chengdu, Sichuan, China
| | - Wen-Yan Zhang
- Department of Pathology, West China Hospital of Sichuan University, NO. 37, Guoxue Alley, Chengdu, Sichuan, China
| | - Li-Rong Zheng
- Department of Radiology, West China Hospital of Sichuan University, NO. 37, Guoxue Alley, Chengdu, 610041, Sichuan, China
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Liu BM, Zhang ZG, Zhang K, Kuroiwa Y, Moriyoshi C, Yu HM, Li C, Zheng LR, Li LN, Yang G, Zhou Y, Fang YZ, Hou JS, Matsushita Y, Sun HT. Unconventional Luminescent Centers in Metastable Phases Created by Topochemical Reduction Reactions. Angew Chem Int Ed Engl 2016; 55:4967-71. [DOI: 10.1002/anie.201601191] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Bo-Mei Liu
- College of Chemistry; Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 P.R. China
| | - Zhi-Gang Zhang
- Department of Physical Science; Hiroshima University; Higashihiroshima Hiroshima 739-8526 Japan
| | - Kai Zhang
- School of Materials Science and Engineering; Shanghai Institute of Technology; Shanghai 201418 P.R. China
| | - Yoshihiro Kuroiwa
- Department of Physical Science; Hiroshima University; Higashihiroshima Hiroshima 739-8526 Japan
| | - Chikako Moriyoshi
- Department of Physical Science; Hiroshima University; Higashihiroshima Hiroshima 739-8526 Japan
| | - Hui-Mei Yu
- Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050 P.R. China
| | - Chao Li
- Electronic Materials Research Laboratory; Key Laboratory of the Ministry of Education and International Center for Dielectric Research; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Li-Na Li
- Shanghai Synchrotron Radiation Facility; Shanghai Institute of Applied Physics; Chinese Academy of Sciences; Shanghai 201204 P.R. China
| | - Guang Yang
- Electronic Materials Research Laboratory; Key Laboratory of the Ministry of Education and International Center for Dielectric Research; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Yang Zhou
- College of Chemistry; Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 P.R. China
| | - Yong-Zheng Fang
- School of Materials Science and Engineering; Shanghai Institute of Technology; Shanghai 201418 P.R. China
| | - Jing-Shan Hou
- School of Materials Science and Engineering; Shanghai Institute of Technology; Shanghai 201418 P.R. China
| | - Yoshitaka Matsushita
- National Institute for Material Sciences (NIMS); 1-2-1 Sengen, Tsukuba-city Ibaraki 305-0047 Japan
| | - Hong-Tao Sun
- College of Chemistry; Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 P.R. China
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Li ZJ, Wang L, Yuan LY, Xiao CL, Mei L, Zheng LR, Zhang J, Yang JH, Zhao YL, Zhu ZT, Chai ZF, Shi WQ. Efficient removal of uranium from aqueous solution by zero-valent iron nanoparticle and its graphene composite. J Hazard Mater 2015; 290:26-33. [PMID: 25734531 DOI: 10.1016/j.jhazmat.2015.02.028] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 01/23/2015] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
Zero-valent iron nanoparticle (ZVI-np) and its graphene composites were prepared and applied in the removal of uranium under anoxic conditions. It was found that solutions containing 24 ppm U(VI) could be completely cleaned up by ZVI-nps, regardless of the presence of NaHCO3, humic acid, mimic groundwater constituents or the change of solution pH from 5 to 9, manifesting the promising potential of this reactive material in permeable reactive barrier (PRB) to remediate uranium-contaminated groundwater. In the measurement of maximum sorption capacity, removal efficiency of uranium kept at 100% until C0(U) = 643 ppm, and the saturation sorption of 8173 mg U/g ZVI-nps was achieved at C0(U) = 714 ppm. In addition, reaction mechanisms were clarified based on the results of SEM, XRD, XANES, and chemical leaching in (NH4)2CO3 solution. Partially reductive precipitation of U(VI) as U3O7 was prevalent when sufficient iron was available; nevertheless, hydrolysis precipitation of U(VI) on surface would be predominant as iron got insufficient, characterized by releases of Fe(2+) ions. The dissolution of Fe(0) cores was assigned to be the driving force of continuous formation of U(VI) (hydr)oxide. The incorporation of graphene supporting matrix was found to facilitate faster removal rate and higher U(VI) reduction ratio, thus benefitting the long-term immobilization of uranium in geochemical environment.
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Affiliation(s)
- Zi-Jie Li
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Wang
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Yong Yuan
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Cheng-Liang Xiao
- School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Lei Mei
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing100049, China
| | - Jing Zhang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing100049, China
| | - Ju-Hua Yang
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Liang Zhao
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen-Tai Zhu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Zhi-Fang Chai
- School of Radiological and Interdisciplinary Sciences (RAD-X), and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China.
| | - Wei-Qun Shi
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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Yuan LY, Sun M, Mei L, Wang L, Zheng LR, Gao ZQ, Zhang J, Zhao YL, Chai ZF, Shi WQ. New Insight of Coordination and Extraction of Uranium(VI) with N-Donating Ligands in Room Temperature Ionic Liquids: N,N′-Diethyl-N,N′-ditolyldipicolinamide as a Case Study. Inorg Chem 2015; 54:1992-9. [DOI: 10.1021/ic502890w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Yong Yuan
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Man Sun
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Mei
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Wang
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Rong Zheng
- Beijing Synchrotron
Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zeng-Qiang Gao
- Beijing Synchrotron
Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Zhang
- Beijing Synchrotron
Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Liang Zhao
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Fang Chai
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- School of Radiological & Interdisciplinary Sciences and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
| | - Wei-Qun Shi
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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Yuan LY, Bai ZQ, Zhao R, Liu YL, Li ZJ, Chu SQ, Zheng LR, Zhang J, Zhao YL, Chai ZF, Shi WQ. Introduction of bifunctional groups into mesoporous silica for enhancing uptake of thorium(IV) from aqueous solution. ACS Appl Mater Interfaces 2014; 6:4786-4796. [PMID: 24617841 DOI: 10.1021/am405584h] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The potential industrial application of thorium (Th), as well as the environmental and human healthy problems caused by thorium, promotes the development of reliable methods for the separation and removal of Th(IV) from environmental and geological samples. Herein, the phosphonate-amino bifunctionalized mesoporous silica (PAMS) was fabricated by a one-step self-assembly approach for enhancing Th(IV) uptake from aqueous solution. The synthesized sorbent was found to possess ordered mesoporous structures with uniform pore diameter and large surface area, characterized by SEM, XRD, and N2 sorption/desorption measurements. The enhancement of Th(IV) uptake by PAMS was achieved by coupling of an access mechanism to a complexation mechanism, and the sorption can be optimized by adjusting the coverage of the functional groups in the PAMS sorbent. The systemic study on Th(IV) sorption/desorption by using one coverage of PAMS (PAMS12) shows that the Th(IV) sorption by PAMS is fast with equilibrium time of less than 1 h, and the sorption capacity is more than 160 mg/g at a relatively low pH. The sorption isotherm has been successfully modeled by the Langmuir isotherm and D-R isotherm, which reveals a monolayer homogeneous chemisorption of Th(IV) in PAMS. The Th(IV) sorption by PAMS is pH dependent but ionic strength independent. In addition, the sorbed Th(IV) can be completely desorbed using 0.2 mol/L or more concentrated nitric acid solution. The sorption test performed in the solution containing a range of competing metal ions suggests that the PAMS sorbent has a desirable selectivity for Th(IV) ions.
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Affiliation(s)
- Li-Yong Yuan
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
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47
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Abstract
This paper presents a wearable biopatch prototype for body surface potential measurement. It combines three key technologies, including mixed-signal system on chip (SoC) technology, inkjet printing technology, and anisotropic conductive adhesive (ACA) bonding technology. An integral part of the biopatch is a low-power low-noise SoC. The SoC contains a tunable analog front end, a successive approximation register analog-to-digital converter, and a reconfigurable digital controller. The electrodes, interconnections, and interposer are implemented by inkjet-printing the silver ink precisely on a flexible substrate. The reliability of printed traces is evaluated by static bending tests. ACA is used to attach the SoC to the printed structures and form the flexible hybrid system. The biopatch prototype is light and thin with a physical size of 16 cm × 16 cm. Measurement results show that low-noise concurrent electrocardiogram signals from eight chest points have been successfully recorded using the implemented biopatch.
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48
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Bai ZQ, Li ZJ, Wang CZ, Yuan LY, Liu ZR, Zhang J, Zheng LR, Zhao YL, Chai ZF, Shi WQ. Interactions between Th(iv) and graphene oxide: experimental and density functional theoretical investigations. RSC Adv 2014. [DOI: 10.1039/c3ra45938a] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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49
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Guo L, Xian H, Li QF, Chen D, Tan YS, Zhang J, Zheng LR, Li XG. NO adsorption behaviors of the MnOx catalysts in lean-burn atmospheres. J Hazard Mater 2013; 260:543-551. [PMID: 23811376 DOI: 10.1016/j.jhazmat.2013.06.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/03/2013] [Accepted: 06/02/2013] [Indexed: 06/02/2023]
Abstract
NO(x) emission control of lean-burn engines is one of the great challenges in the world. Herein, the MnOx model catalysts with the different calcination temperatures were synthesized to investigate their NO adsorbability for lean-burn exhausts. The transformation from (β-)MnO₂ to (α-)Mn₂O₃ following the increased calcination temperatures was evidenced from the viewpoint of the local atomic level. Among these samples, the one calcined at 550 °C containing the single α-Mn₂O₃ phase displayed the best NO adsorbability: NO was mainly adsorbed in the forms of NO/nitrites and NO₂/nitrates at the low and high temperatures, respectively; the NO oxidation ability displayed the volcano-shape following the increased operating temperatures, and reached the maximum, i.e. 92.4% of the NO-to-NO₂ conversion, at 250 °C. Moreover, this sample presented the efficiently reversible NO adsorption/desorption performance in alternative lean-burn/fuel-rich atmospheres, due to the weakly bonded NO(x) on it. The superficial oxygen species plays a critical role for the NO oxidation over α-Mn₂O₃. The consumed superficial oxygen could be further compensated by the gaseous and lattice oxygen therein. Our findings show that the α-Mn₂O₃ material is a promising NO(x) adsorber for lean-burn exhausts even at low operating temperatures.
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Affiliation(s)
- Li Guo
- School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, PR China
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50
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Wang LH, Zhou SX, Li RC, Zheng LR, Zhu JH, Hu SJ, Sun YL. Serum Levels of Calcitonin Gene-Related Peptide and Substance P are Decreased in Patients with Diabetes Mellitus and Coronary Artery Disease. J Int Med Res 2012; 40:134-40. [PMID: 22429353 DOI: 10.1177/147323001204000114] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE: This study evaluated serum levels of the neuropeptides calcitonin gene-related peptide (CGRP) and substance P (SP) in coronary artery disease (CAD) patients with and without a history of diabetes mellitus (DM). METHODS: Patients undergoing coronary angiography for suspected myocardial ischaemia were divided into four groups depending on their clinical status: control group (no CAD or DM; n = 44), DM group (DM without CAD; n = 46), CAD group (stable CAD without DM; n = 44) and DM + CAD group (stable CAD with DM; n = 50). Serum levels of CGRP and SP were determined using radioimmunoassays. RESULTS: CGRP and SP levels in the DM and CAD groups were significantly lower than in the control group. The lowest levels of CGRP and SP were observed in the DM + CAD group. There were no significant differences in CGRP and SP levels between the DM group and the CAD group. CONCLUSION: CGRP and SP may have a role in the pathogenesis of CAD in patients with diabetes.
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Affiliation(s)
- LH Wang
- Department of Cardiovascular Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - SX Zhou
- Department of Cardiovascular Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - RC Li
- Department of Cardiovascular Sciences, Traditional Chinese Medicine Hospital of Yuhang District, Hangzhou, Zhejiang, China
| | - LR Zheng
- Department of Cardiovascular Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - JH Zhu
- Department of Cardiovascular Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - SJ Hu
- Department of Cardiovascular Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - YL Sun
- Department of Respiratory Sciences, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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