1
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Cordoba M, Garcia L, Badano J, Betti C, Coloma-Pascual F, Quiroga M, Lederhos C. In Situ DRIFTS Analysis during Hydrogenation of 1-Pentyne and Olefin Purification with Ag Nanoparticles. Chempluschem 2023; 88:e202300344. [PMID: 37749065 DOI: 10.1002/cplu.202300344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/12/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
The catalytic performance of nanoparticles (NPs) of Ag anchored on different supports was evaluated during the selective hydrogenation of 1-pentyne and the purification of a mixture of 1-pentene/1-pentyne (70/30 vol %). The catalysts were identified: Ag/Al (Ag supported on ɣ-Al2 O3 ), Ag/Al-Mg (Ag supported on ɣ-Al2 O3 modified with Mg), Ag/Ca (Ag supported on CaCO3 ) and Ag/RX3 (Ag supported on activated carbon-type: RX3). In addition, in situ DRIFTS analysis of 1-pentyne adsorption on each support, catalyst, and 1-pentyne hydrogenation were investigated. The results showed that the synthesized catalysts were active and very selective (≥85 %) for obtaining the desired product (1-pentene). Different adsorbed species (-C≡C- and -C=C-) were observed on the supports and catalysts surface using in situ DRIFT analysis, which can be correlated to the activity and high selectivity reached. The role of the supports and electronic properties over Ag improve the H2 dissociative chemisorption during the hydrogenation reactions; promoting the selectivity and the high catalytic performance. Ag/Al and Ag/Al-Mg were the most active catalysts. This was due to the synergism between the active Ag/Ag+ species and the supports (electronic effects). The results show that Ag/Al and Ag/Al-Mg catalysts have favorable properties and are promising for the alkyne hydrogenation and olefin purification reactions.
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Affiliation(s)
- Misael Cordoba
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
- Grupo de Investigación en Catálisis, Universidad del Cauca, Calle 5 No. 4-70, Popayán, Colombia
| | - Lina Garcia
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
- Grupo de Investigación Ciencia e Ingeniería en Sistemas Ambientales (GCISA), Universidad del Cauca, Calle 5 No. 4-70, Popayán, Colombia
| | - Juan Badano
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
| | - Carolina Betti
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
| | | | - Mónica Quiroga
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
| | - Cecilia Lederhos
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), Colectora Ruta Nacional 168 Km 0, Santa Fe, Argentina
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2
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Lin CC, Lin PY, Han Z, Tsai CY, Beck DE, Hsieh S. Rapid identification and detection of aristolochic acids in the herbal extracts by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122918. [PMID: 37269653 DOI: 10.1016/j.saa.2023.122918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/16/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
Herbs containing aristolochic acids (AAs) have already been proven to be highly carcinogenic and nephrotoxic. In this study, a novel surface-enhanced Raman scattering (SERS) identification method was developed. Ag-APS nanoparticles with a particle size of 3.53 ± 0.92 nm were produced by combining silver nitrate and 3-aminopropylsilatrane. The reaction between the carboxylic acid group of aristolochic acid I (AAI) and amine group of Ag-APS NPs was used to form amide bonds, and thus, concentrate AAI, rendering it easy to detect via SERS and amplified to obtain the best SERS enhancement effect. Detection limit was calculated to be approximately 40 nM. Using the SERS method, AAI was successfully detected in the samples of four Chinese herbal medicines containing AAI. Therefore, this method has a high potential to be applied in the future development of AAI analysis and rapid qualitative and quantitative analysis of AAI in dietary supplements and edible herbs.
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Affiliation(s)
- Chin-Chung Lin
- Department of Emergency Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
| | - Pei-Ying Lin
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Zhenyuan Han
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chen-Yu Tsai
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - David E Beck
- Oxford Instruments Asylum Research, Inc., 7416 Hollister Ave., Santa Barbara, CA 93117, USA
| | - Shuchen Hsieh
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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3
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Chen Y, Yang C, Huang X, Li L, Yu N, Xie H, Zhu Z, Yuan Y, Zhou L. Two-dimensional MXene enabled carbon quantum dots@Ag with enhanced catalytic activity towards the reduction of p-nitrophenol. RSC Adv 2022; 12:4836-4842. [PMID: 35425493 PMCID: PMC8981249 DOI: 10.1039/d1ra09177h] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/31/2022] [Indexed: 12/29/2022] Open
Abstract
A composite of cuttlefish ink-based carbon quantum dots@Ag/MXene (CQD@Ag/MXene) was firstly synthesized by solvothermal method as a catalyst for reduction of p-nitrophenol (PNP) to p-aminophenol (PAP). CQD@Ag/MXene was characterized by scanning electron microscopy (SEM), field emission transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman. The results show that loading on 2D material MXene can prevent the aggregation of CQD@Ag and expose more active sites, which contributes to a superior catalytic activity with a pseudo-first-order rate constant k (2.28 × 10-2 s-1) and mass-normalized rate constant k m (5700 s-1 g-1), nearly 2 times higher than CQD@Ag without MXene (k = 1.09 × 10-2 s-1 and k m = 2725 s-1 g-1). Besides, CQD@Ag/MXene showed excellent reusability which even retained about 65% activity in successive 10 cycles. The high adsorption rate to PNP and the promotion of forming H radicals may be the reason for the outstanding catalytic activity of CQD@Ag/MXene. CQD@Ag/MXene can be a potential candidate in the removal of environmental pollutants due to its facile synthesis and high catalytic efficiency.
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Affiliation(s)
- Yingxin Chen
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Chunli Yang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Xiaotong Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Lu Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Na Yu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Huan Xie
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Zebin Zhu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Yong Yuan
- School of Environmental Science and Engineering, Guangdong University of Technology Guangzhou 510006 P.R. China
| | - Lihua Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology Guangzhou 510006 P.R. China
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4
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Zahid S, Alzahrani AK, Kizilbash N, Ambreen J, Ajmal M, Farooqi ZH, Siddiq M. Preparation of stimuli responsive microgel with silver nanoparticles for biosensing and catalytic reduction of water pollutants. RSC Adv 2022; 12:33215-33228. [DOI: 10.1039/d2ra05475b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
Poly(N-isopropylacrylamide/2-acrylamido-2-methylpropane sulfonic acid) microgel was prepared and fabricated with silver nanoparticles to design a material for dual functions of catalyst and sensor.
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Affiliation(s)
- Sara Zahid
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - A. Khuzaim Alzahrani
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Northern Border University, Arar-91431, Saudi Arabia
| | - Nadeem Kizilbash
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Northern Border University, Arar-91431, Saudi Arabia
| | - Jaweria Ambreen
- Department of Chemistry, COMSATS University Islamabad, Park Road, 45550, Islamabad, Pakistan
| | - Muhammad Ajmal
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Zahoor H. Farooqi
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Muhammad Siddiq
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
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5
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Das B, Jena S, Dhal J. Ag doped α-Fe2O3 nanoparticles: Synthesis, characterization and application as heterogeneous photocatalyst for removal of organic dye from aqueous media without any oxidizing agents. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Zhang Z, Wen G, Luo D, Ren B, Zhu Y, Gao R, Dou H, Sun G, Feng M, Bai Z, Yu A, Chen Z. "Two Ships in a Bottle" Design for Zn-Ag-O Catalyst Enabling Selective and Long-Lasting CO 2 Electroreduction. J Am Chem Soc 2021; 143:6855-6864. [PMID: 33852301 DOI: 10.1021/jacs.0c12418] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Electrochemical CO2 reduction (CO2RR) using renewable energy sources represents a sustainable means of producing carbon-neutral fuels. Unfortunately, low energy efficiency, poor product selectivity, and rapid deactivation are among the most intractable challenges of CO2RR electrocatalysts. Here, we strategically propose a "two ships in a bottle" design for ternary Zn-Ag-O catalysts, where ZnO and Ag phases are twinned to constitute an individual ultrafine nanoparticle impregnated inside nanopores of an ultrahigh-surface-area carbon matrix. Bimetallic electron configurations are modulated by constructing a Zn-Ag-O interface, where the electron density reconfiguration arising from electron delocalization enhances the stabilization of the *COOH intermediate favorable for CO production, while promoting CO selectivity and suppressing HCOOH generation by altering the rate-limiting step toward a high thermodynamic barrier for forming HCOO*. Moreover, the pore-constriction mechanism restricts the bimetallic particles to nanosized dimensions with abundant Zn-Ag-O heterointerfaces and exposed active sites, meanwhile prohibiting detachment and agglomeration of nanoparticles during CO2RR for enhanced stability. The designed catalysts realize 60.9% energy efficiency and 94.1 ± 4.0% Faradaic efficiency toward CO, together with a remarkable stability over 6 days. Beyond providing a high-performance CO2RR electrocatalyst, this work presents a promising catalyst-design strategy for efficient energy conversion.
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Affiliation(s)
- Zhen Zhang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Guobin Wen
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Dan Luo
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Bohua Ren
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yanfei Zhu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Rui Gao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Haozhen Dou
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Guiru Sun
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Ming Feng
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Zhengyu Bai
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang 453007, China
| | - Aiping Yu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Zhongwei Chen
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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7
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Maskoun J, Gheshlaghi N, Isik F, Delikanli S, Erdem O, Erdem EY, Demir HV. Optical Microfluidic Waveguides and Solution Lasers of Colloidal Semiconductor Quantum Wells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007131. [PMID: 33491818 DOI: 10.1002/adma.202007131] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/10/2020] [Indexed: 06/12/2023]
Abstract
The realization of high-quality lasers in microfluidic devices is crucial for numerous applications, including biological and chemical sensors and flow cytometry, and the development of advanced lab-on-chip (LOC) devices. Herein, an ultralow-threshold microfluidic single-mode laser is proposed and demonstrated using an on-chip cavity. CdSe/CdS@Cdx Zn1- x S core/crown@gradient-alloyed shell colloidal semiconductor quantum wells (CQWs) dispersed in toluene are employed in the cavity created inside a poly(dimethylsiloxane) (PDMS) microfluidic device using SiO2 -protected Ag mirrors to achieve in-solution lasing. Lasing from such a microfluidic device having CQWs solution as a microfluidic gain medium is shown for the first time with a record-low optical gain threshold of 17.1 µJ cm- ² and lasing threshold of 68.4 µJ cm- ² among all solution-based lasing demonstrations. In addition, air-stable SiO2 protected Ag films are used and designed to form highly tunable and reflective mirrors required to attain a high-quality Fabry-Pérot cavity. These realized record-low thresholds emanate from the high-quality on-chip cavity together with the core/crown@gradient-alloyed shell CQWs having giant gain cross-section and slow Auger rates. This microfabricated CQW laser provides a compact and inexpensive coherent light source for microfluidics and integrated optics covering the visible spectral region.
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Affiliation(s)
- Joudi Maskoun
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Negar Gheshlaghi
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Furkan Isik
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Savas Delikanli
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 639798, Singapore
| | - Onur Erdem
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
- Department of Electrical and Electronics Engineering, Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - Emine Yegan Erdem
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
- Department of Mechanical Engineering, Bilkent University, Ankara, 06800, Turkey
| | - Hilmi Volkan Demir
- UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 639798, Singapore
- Department of Electrical and Electronics Engineering, Department of Physics, Bilkent University, Ankara, 06800, Turkey
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8
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Bunluesak T, Phuruangrat A, Thongtem S, Thongtem T. Photodeposition of AgPd nanoparticles on Bi2WO6 nanoplates for the enhanced photodegradation of rhodamine B. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2020.108399] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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10
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Fouad DE, Zhang C, Bi C, Abou-Elyazed AS, Helal WMK, Chand K, Hegazy M. Enhanced properties of low crystalline α-Fe2O3 nanoparticles synthesized via mechanical-ultrasonic activated precipitation as a green alternative to the conventional route: A comparative study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113964] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Wei W, Hu H, Chen L, Yan Z, Fan X, Wang J, Xu Y, Xie J. Size-controllable synthesis of zinc ferrite/reduced graphene oxide aerogels: efficient electrochemical sensing of p-nitrophenol. NANOTECHNOLOGY 2020; 31:435706. [PMID: 32559756 DOI: 10.1088/1361-6528/ab9e91] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a nonaqueous method for the synthesis of size-controlled highly crystalline zinc ferrite/reduced graphene oxide (ZFO/rGO) aerogel was provided by using benzyl alcohol as the medium. In our findings, benzyl alcohol was introduced not only as the solvent, but the structure-directing agent and strong reducing agent during the nucleation and growth of ZnFe2O4 nanoparticles (NPs). The characterization analysis indicated that ZnFe2O4 NPs were immobilized on the multilayer rGO with a controllable size of 12 nm. Moreover, the 3D ZFO/rGO aerogel shows excellent electrochemical property as a facile electrochemical sensor for the detection of p-nitrophenol (p-NP). The ZFO/rGO electrochemical sensing offers the advantages of wide linear range (1-500 μmol l-1), excellent sensitivity (23.985 mA mM-1 cm-2), good stability and selectivity (<8.8%). In addition, the possible reaction mechanism of 3D ZFO/rGO aerogel was explained during the detection process under acidic condition. Significantly, our results not only provided insight into the possible reaction mechanism of 3D ZFO/rGO nanocomposite, but proposed the way for the synthesis of highly crystalline materials through a benzyl alcohol-mediated method.
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Affiliation(s)
- Wei Wei
- School of Chemistry and Chemical Engineering, Center of Analysis and Test, Jiangsu University, Zhenjiang 212013, People's Republic of China. Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, 01069, Dresden, Germany
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12
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Panneer Selvam S, Chinnadayyala SR, Cho S, Yun K. Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO 2/Au PCB. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1368. [PMID: 32674260 PMCID: PMC7407910 DOI: 10.3390/nano10071368] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 01/02/2023]
Abstract
An rGO-Ag@SiO2 nanocomposite-based electrochemical sensor was developed to detect etidronic acid (EA) using the differential pulse voltammetric (DPV) technique. Rapid self-assembly of the rGO-Ag@SiO2 nanocomposite was accomplished through probe sonication. The developed rGO-Ag@SiO2 nanocomposite was used as an electrochemical sensing platform by drop-casting on a gold (Au) printed circuit board (PCB). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confirmed the enhanced electrochemical active surface area (ECASA) and low charge transfer resistance (Rct) of the rGO-Ag@SiO2/Au PCB. The accelerated electron transfer and the high number of active sites on the rGO-Ag@SiO2/Au PCB resulted in the electrochemical detection of EA through the DPV technique with a limit of detection (LOD) of 0.68 μM and a linear range of 2.0-200.0 μM. The constructed DPV sensor exhibited high selectivity toward EA, high reproducibility in terms of different Au PCBs, excellent repeatability, and long-term stability in storage at room temperature (25 °C). The real-time application of the rGO-Ag@SiO2/Au PCB for EA detection was investigated using EA-based pharmaceutical samples. Recovery percentages between 96.2% and 102.9% were obtained. The developed DPV sensor based on an rGO-Ag@SiO2/Au PCB could be used to detect other electrochemically active species following optimization under certain conditions.
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Affiliation(s)
- Sathish Panneer Selvam
- Department of Electronics Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13210, Korea; (S.P.S.); (S.R.C.)
| | - Somasekhar R. Chinnadayyala
- Department of Electronics Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13210, Korea; (S.P.S.); (S.R.C.)
| | - Sungbo Cho
- Department of Electronics Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13210, Korea; (S.P.S.); (S.R.C.)
- Gachon Advanced Institute for Health Science & Technology, Gachon University, Incheon 21999, Korea
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Seongnam-si, Gyeonggi-do 13210, Korea
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14
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Wang N, Zeng S, Yuan H, Huang J. Morphology-dependent interfacial interactions of Fe 2O 3 with Ag nanoparticles for determining the catalytic reduction of p-nitrophenol. J Environ Sci (China) 2020; 92:1-10. [PMID: 32430112 DOI: 10.1016/j.jes.2020.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 02/02/2020] [Accepted: 02/02/2020] [Indexed: 06/11/2023]
Abstract
In this work, we fabricated three kinds of Ag/Fe2O3 model catalysts with different morphologies to study the interfacial interactions between Ag and Fe2O3, and how they affected the catalytic activity in hydrogenation of p-nitrophenol was explored. The hydrothermal method was used to synthesize the metal oxide supported silver catalyst, with various morphologies including nanoplates (NPs), nanospheres (NSs), and nanocubes (NCs). The crystal structure, morphology and surface elements of the composite were investigated by various measurements, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity was also evaluated by the reduction of p-nitrophenol to p-aminophenol. It was found that the activities of the above catalysts varied with the morphology of the support. Among them, Ag/Fe2O3 NPs promoted the highest performance, Ag/Fe2O3 NSs were slightly inferior, and Ag/Fe2O3 NCs were the worst. At last, we ascribed the remarkable activity of Ag/Fe2O3 NPs to the strong metal-support interactions between Ag and Fe2O3.
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Affiliation(s)
- Ningning Wang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Shuai Zeng
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Hong Yuan
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Jin Huang
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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Cyganowski P, Jermakowicz-Bartkowiak D, Lesniewicz A, Pohl P, Dzimitrowicz A. Highly efficient and convenient nanocomposite catalysts produced using in-situ approach for decomposition of 4-nitrophenol. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124452] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Arumugam S, Toku Y, Ju Y. Fabrication of γ-Fe 2O 3 Nanowires from Abundant and Low-cost Fe Plate for Highly Effective Electrocatalytic Water Splitting. Sci Rep 2020; 10:5407. [PMID: 32214145 PMCID: PMC7096520 DOI: 10.1038/s41598-020-62259-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 01/27/2020] [Indexed: 12/03/2022] Open
Abstract
Water splitting is thermodynamically uphill reaction, hence it cannot occur easily, and also highly complicated and challenging reaction in chemistry. In electrocatalytic water splitting, the combination of oxygen and hydrogen evolution reactions produces highly clean and sustainable hydrogen energy and which attracts research communities. Also, fabrication of highly active and low cost materials for water splitting is a major challenge. Therefore, in the present study, γ-Fe2O3 nanowires were fabricated from highly available and cost-effective iron plate without any chemical modifications/doping onto the surface of the working electrode with high current density. The fabricated nanowires achieved the current density of 10 mA/cm2 at 1.88 V vs. RHE with the scan rate of 50 mV/sec. Stability measurements of the fabricated Fe2O3 nanowires were monitored up to 3275 sec with the current density of 9.6 mA/cm2 at a constant potential of 1.7 V vs. RHE and scan rate of 50 mV/sec.
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Affiliation(s)
- Sivaranjani Arumugam
- Department of Micro-Nano Mechanical Science and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, 464-8603, Japan
| | - Yuhki Toku
- Department of Micro-Nano Mechanical Science and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, 464-8603, Japan
| | - Yang Ju
- Department of Micro-Nano Mechanical Science and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, 464-8603, Japan.
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17
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Torkashvand N, Sarlak N. Polymerized graphene oxide/MnCe 0.5Fe 1.5O 4 nanoferrofluid as a T 2- and T 2*-weighted contrast agent for magnetic resonance imaging. Colloids Surf B Biointerfaces 2020; 185:110555. [PMID: 31629095 DOI: 10.1016/j.colsurfb.2019.110555] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/22/2019] [Accepted: 10/02/2019] [Indexed: 01/14/2023]
Abstract
In this study synthesis of graphene oxide-poly citric acid/MnCe0.5Fe1.5O4 nanoferrofluid with a simple method and its ability for enhancing the contrast of magnetic resonance images was reported. The co-precipitation method has been used for the production of MnCe0.5Fe1.5O4 nanoparticles with a size distribution of 25-40 nm, which has shown a very good superparamagnetic property with saturation magnetization (Ms) 53.6 emu g-1. Graphene oxide (GO) was prepared by a modified Hummers method and polymerized with citric acid to produce GO-PCA. The nanoparticles were loaded on the GO-PCA surface to produce nanoferrofluid that showed excellent colloidal stability, extra dispersibility, and good magnetic properties with Ms equal to 47.8 emu g-1. This nanoferrofluid has an increased effect on the contrast of T2 and T2*-weighted images, with the values 109.15 and 180.23 mM-1 s-1 for r2 and r2*, respectively at 3.0 T. The cellular uptake evaluation revealed adequate uptake for HeLa cell lines.
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Affiliation(s)
- Narges Torkashvand
- Department of Chemistry, Faculty of Science, Lorestan University, P.O. Box 68151-44316, Khorramabad, Iran
| | - Nahid Sarlak
- Department of Chemistry, Faculty of Science, Lorestan University, P.O. Box 68151-44316, Khorramabad, Iran.
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18
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Bhattacharjee P, Boruah PK, Das MR, Bora U. Direct C–H bond activation: palladium-on-carbon as a reusable heterogeneous catalyst for C-2 arylation of indoles with arylboronic acids. NEW J CHEM 2020. [DOI: 10.1039/d0nj00735h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We report a methodology for exclusive C-2 arylated indoles without the aid of any ligand or directing group in air.
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Affiliation(s)
| | - Purna K Boruah
- Advanced Materials Group
- Materials Sciences and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Manash R Das
- Advanced Materials Group
- Materials Sciences and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Utpal Bora
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
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19
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Cyganowski P, Jermakowicz-Bartkowiak D, Jamroz P, Pohl P, Dzimitrowicz A. Hydrogel-based nanocomposite catalyst containing uncoated gold nanoparticles synthesized using cold atmospheric pressure plasma for the catalytic decomposition of 4-nitrophenol. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123886] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Torkashvand N, Sarlak N. Synthesis of completely dispersed water soluble functionalized graphene/γ-Fe2O3 nanocomposite and its application as an MRI contrast agent. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Bich H, Thi M, Son N, Bui Q, Ai-Le P, Nhac-Vu HT. Nickel-tungsten sulfides nanostructures assembled nitrogen-doped graphene as a novel catalyst for effective oxygen reduction reaction. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Structural transition of synthesized silver nanoparticles under irradiation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Zhao Y, Liu L, Li C, Ye B, Xiong J, Shi X. Immobilization of polyethyleneimine-templated silver nanoparticles onto filter paper for catalytic applications. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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24
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Ortiz-Quiñonez JL, Pal U, Villanueva MS. Structural, Magnetic, and Catalytic Evaluation of Spinel Co, Ni, and Co-Ni Ferrite Nanoparticles Fabricated by Low-Temperature Solution Combustion Process. ACS OMEGA 2018; 3:14986-15001. [PMID: 31458165 PMCID: PMC6644305 DOI: 10.1021/acsomega.8b02229] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/25/2018] [Indexed: 05/24/2023]
Abstract
Here, we present the low-temperature (∼600 °C) solution combustion method for the fabrication of CoFe2O4, NiFe2O4, and Co0.5Ni0.5Fe2O4 nanoparticles (NPs) of 12-64 nm range in pure cubic spinel structure, by adjusting the oxidant (nitrate ions)/reductant (glycine) ratio in the reaction mixture. Although nitrate ions/glycine (N/G) ratios of 3 and 6 were used for the synthesis, phase-pure NPs could be obtained only for the N/G ratio of 6. For the N/G ratio 3, certain amount of Ni2+ cations was reduced to metallic nickel. The NH3 gas generated during the thermal decomposition of the amino acid (glycine, H2NCH2COOH) induced the reduction reaction. X-ray diffraction (XRD), Raman spectroscopy, vibrating sample magnetometry, and X-ray photoelectron spectroscopy techniques were utilized to characterize the synthesized materials. XRD analyses of the samples indicate that the Co0.5Ni0.5Fe2O4 NPs have lattice parameter larger than that of NiFe2O4, but smaller than that of CoFe2O4 NPs. Although the saturation magnetization (M s) of Co0.5Ni0.5Fe2O4 NPs lies in between the saturation magnetization values of CoFe2O4 and NiFe2O4 NPs, high coercivity (H c, 875 Oe) of the NPs indicate their hard ferromagnetic behavior. Catalytic behavior of the fabricated spinel NPs revealed that the samples containing metallic Ni are active catalysts for the degradation of 4-nitrophenol in aqueous medium.
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Affiliation(s)
- Jose-Luis Ortiz-Quiñonez
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
| | - Umapada Pal
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Apartado Postal
J-48, 72570 Puebla, Pue., Mexico
| | - Martin Salazar Villanueva
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
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25
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Facile Synthesis of Ag–γ-Fe2O3 Superior Nanocomposite for Catalytic Reduction of Nitroaromatic Compounds and Catalytic Degradation of Methyl Orange. Catal Letters 2018. [DOI: 10.1007/s10562-018-2569-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Bai T, Lu P, Guo Z, Xiang L, Liu L. A simple approach towards citrate-stabilized Ag nanoparticles with widely tunable sizes. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.12.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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