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Zhao N, Lian H, Yu Y. In situ electrochemical deposition of a bismuth/cerium dioxide/reduced graphene oxide nanofilm for enhanced Pb 2+ sensing performance. NEW J CHEM 2022. [DOI: 10.1039/d2nj03392e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Bi/CeO2/rGO/FTO sensing platform was constructed by in situ electrochemical deposition for sensitive detection of Pb2+ with a detection limit of 0.00045 μM.
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Affiliation(s)
- Nan Zhao
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Huiting Lian
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Yaming Yu
- College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
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Husain A, Al-Zahrani SA, Al Otaibi A, Khan I, Mujahid Ali Khan M, Alosaimi AM, Khan A, Hussein MA, Asiri AM, Jawaid M. Fabrication of Reproducible and Selective Ammonia Vapor Sensor-Pellet of Polypyrrole/Cerium Oxide Nanocomposite for Prompt Detection at Room Temperature. Polymers (Basel) 2021; 13:polym13111829. [PMID: 34073027 PMCID: PMC8198213 DOI: 10.3390/polym13111829] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 05/22/2021] [Indexed: 11/16/2022] Open
Abstract
Polypyrrole (PPy) and polypyrrole/cerium oxide nanocomposite (PPy/CeO2) were prepared by the chemical oxidative method in an aqueous medium using anhydrous ferric chloride (FeCl3) as an oxidant. The successful formulation of materials was confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and transmittance electron microscopy (TEM). A four-in-line probe device was used for studying DC electrical conductivity and ammonia vapor sensing properties of PPy and PPy/CeO2. The significant improvement in both the conductivity and sensing parameters of PPy/CeO2 compared to pristine PPy reveals some synergistic/electronic interaction between PPy and cerium oxide nanoparticles (CeO2 NPs) working at molecular levels. The initial conductivity (i.e., conductivity at room temperature) was found to be 0.152 Scm-1 and 1.295 Scm-1 for PPy and PPy/CeO2, respectively. Also, PPy/CeO2 showed much better conductivity retention than pristine PPy under both the isothermal and cyclic ageing conditions. Ammonia vapor sensing was carried out at different concentration (0.01, 0.03, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5 vol %). The sensing response of PPy/CeO2 varied with varying concentrations. At 0.5 vol % ammonia concentration, the % sensing response of PPy and PPy/CeO2 sensor was found to be 39.1% and 93.4%, respectively. The sensing efficiency of the PPy/CeO2 sensor was also evaluated at 0.4. 0.3, 0.2, 0.1, 0.05, 0.03, and 0.01 vol % ammonia concentration in terms of % sensing response, response/recovery time, reversibility, selectivity as well as stability at room temperature.
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Affiliation(s)
- Ahmad Husain
- Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
- Correspondence: (A.H.); (A.K.)
| | - Salma Ahmed Al-Zahrani
- Chemistry Department, Faculty of Science, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia; (S.A.A.-Z.); (A.A.O.)
| | - Ahmed Al Otaibi
- Chemistry Department, Faculty of Science, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia; (S.A.A.-Z.); (A.A.O.)
| | - Imran Khan
- Applied Science and Humanities Section, Faculty of Engineering and Technology, University Polytechnic, Aligarh Muslim University, Aligarh 202002, India; (I.K.); (M.M.A.K.)
| | - Mohammad Mujahid Ali Khan
- Applied Science and Humanities Section, Faculty of Engineering and Technology, University Polytechnic, Aligarh Muslim University, Aligarh 202002, India; (I.K.); (M.M.A.K.)
| | - Abeer Mohamed Alosaimi
- Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Anish Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.A.H.); (A.M.A.)
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
- Correspondence: (A.H.); (A.K.)
| | - Mahmoud Ali Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.A.H.); (A.M.A.)
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (M.A.H.); (A.M.A.)
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Mohammad Jawaid
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), University Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia;
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Benmouhoub C, Turmine M, Kadri A, Pailleret A. Influence of Dodecylsulfate Adsorption on the Stability of Cerium Oxide Nanoparticle-Based Colloidal Aqueous Dispersions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14563-14572. [PMID: 33226234 DOI: 10.1021/acs.langmuir.0c02317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this contribution, the influence of the adsorption of dodecylsulfate, an anionic surfactant, on the stability of colloidal aqueous dispersions containing ceria (CeO2) nanoparticles (NPs) was investigated using zetametry, UV-visible spectrophotometry, and potentiometry involving an ionic surfactant-selective electrode (ISSE). In particular, thanks to absorbance follow-ups carried out as a function of time, aqueous dispersions containing a given loading of CeO2 NPs were found simultaneously to stabilize more quickly with time and to adopt a higher opacity and a more pronounced light-yellow color as the sodium dodecylsulfate (SDS) concentration increased. Knowing that this absorbance was attributed undoubtedly to CeO2 NPs, the fact that the measured absorbance is lower for a higher amount of CeO2 NPs in suspension, as revealed by a higher opacity of the studied dispersions, is somewhat counterintuitive. Besides the higher opacity of the dispersions, a shield effect of the adsorbed SDS layer toward UV-visible light may also explain this observation. The adsorption of dodecylsulfate on CeO2 NPs was indeed demonstrated using zetametry measurements in the presence of SDS and the potentiometric method combined with an ISSE. This latter method did not only allow the accurate determination of impoverishment in freely diffusing dodecylsulfate (DS) anions resulting from DS adsorption on CeO2 NPs but it also showed that this latter obeys a Freundlich isotherm.
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Affiliation(s)
- C Benmouhoub
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systémes Electrochimiques, LISE, 4 Place Jussieu, Case Courrier 133, F-75005 Paris, France
- Laboratoire de Physique et Chimie des Matériaux (LPCM), Université Mouloud Mammeri, B.P. 17, 15000 Tizi-Ouzou, Algeria
| | - M Turmine
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systémes Electrochimiques, LISE, 4 Place Jussieu, Case Courrier 133, F-75005 Paris, France
| | - A Kadri
- Laboratoire de Physique et Chimie des Matériaux (LPCM), Université Mouloud Mammeri, B.P. 17, 15000 Tizi-Ouzou, Algeria
| | - A Pailleret
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systémes Electrochimiques, LISE, 4 Place Jussieu, Case Courrier 133, F-75005 Paris, France
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Agrisuelas J, Gabrielli C, García-Jareño J, Perrot H, Sanchis-Gual R, Sel O, Vicente F. Evaluation of the electrochemical anion recognition ofNO3−-imprinted poly(Azure A) inNO3−/Cl−mixed solutions by ac-electrogravimetry. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.02.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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