2
|
Mirzaei P, Bastide S, Aghajani A, Bourgon J, Leroy É, Zhang J, Snoussi Y, Bensghaier A, Hamouma O, Chehimi MM, Cachet-Vivier C. Bimetallic Cu-Rh Nanoparticles on Diazonium-Modified Carbon Powders for the Electrocatalytic Reduction of Nitrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14428-14436. [PMID: 31610116 DOI: 10.1021/acs.langmuir.9b01911] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
4-Benzenethiol-functionalized high-surface-area graphite powder was prepared and decorated with bimetallic Cu100-xRhx nanoparticles (NPs) to serve as electrocatalysts for the reduction of nitrates. In the first step, the HSAG powder was grafted with in-situ-generated diazonium compounds from 4-aminothiophenol (ATP) in an acidic medium using NaNO2 for the diazotization process. The surface composition was tuned using different initial quantities of ATP. The surface XPS-determined S/C atomic ratio was found to increase stepwise with the initial quantity of amine. In a second step, the grafted and untreated HSAG powders were decorated with Cu100-xRhx NPs by a wet chemical method and the elemental composition of the end composites was assessed by EDS-SEM and ICP, whereas TEM and EDS-TEM served to characterize the NP morphology and their composition on the nanometer scale. In all cases, the NP size was invariably found to be ∼1.7 nm but with a size distribution becoming narrower under an increasing grafting rate and the global composition enriched in copper. Voltammetry was performed with a cavity microelectrode to evaluate the electrocatalytic performance of the composites for nitrate reduction. Increasing diazonium grafting led to a progressive reduction of the peak current intensity and a shift of the peak potentials toward cathodic values. The maximum intensity was obtained for 0.005 μmol of diazonium salt per mg of HSAG, with a gain of 40% in comparison to the best untreated sample. This improvement and a change in the voltammogram characteristics after grafting seem to result from modifications of the local composition at the level of NPs that differ from the global composition. This work conclusively shows that diazonium surface modification is important not only in attaching electrocatalytic NPs to carbon supports but also in providing a narrower size distribution of the electrocatalysts together with finely tuned catalytic properties.
Collapse
Affiliation(s)
- Peyman Mirzaei
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
- MBA Water Treatment Chemicals Co., Ltd , No. 9 Tadayyon Alley, Shariati Street , Tehran , Iran
| | - Stéphane Bastide
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
| | - Atieh Aghajani
- MBA Water Treatment Chemicals Co., Ltd , No. 9 Tadayyon Alley, Shariati Street , Tehran , Iran
| | - Julie Bourgon
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
| | - Éric Leroy
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
| | - Junxian Zhang
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
| | - Youssef Snoussi
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
- Laboratory of Materials, Molecules and Applications , IPEST, University of Carthage , Sidi Bou Said Road , B.P. 51 2070 La Marsa , Tunisia
| | - Asma Bensghaier
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
- Université de Tunis El Manar , Faculté des Sciences de Tunis, Laboratoire de Chimie (Bio)Organique Structurale et de Polymères - Synthèse et Etudes Physicochimiques (LR99ES14) , 2092 El Manar , Tunisia
| | - Ouezna Hamouma
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
- Laboratoire d'Electrochimie, Corrosion et de Valorisation Énergétique (LECVE), Faculté des Sciences Exactes , Université de Bejaia , 06000 Bejaia , Algeria
| | - Mohamed M Chehimi
- Univ Paris Est Creteil , CNRS, ICMPE, UMR7182 , F-94320 Thiais , France
| | | |
Collapse
|
6
|
Bakas I, Yilmaz G, Ait-Touchente Z, Lamouri A, Lang P, Battaglini N, Carbonnier B, Chehimi MM, Yagci Y. Diazonium salts for surface-confined visible light radical photopolymerization. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28241] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Idriss Bakas
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
- Equipe Matériaux Photocatalyse Et Environnement, Faculté Des Sciences, Université Ibn Zohr; B.P. 8106 Cité Dakhla Agadir Morocco
| | - Gorkem Yilmaz
- Department of Chemistry; Istanbul Technical University; Maslak Istanbul 34469 Turkey
| | - Zouhair Ait-Touchente
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Aazdine Lamouri
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Philippe Lang
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Nicolas Battaglini
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | | | - Mohamed M. Chehimi
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
- Université Paris Est, ICMPE (UMR7182), CNRS, UPEC; Thiais 94320 France
| | - Yusuf Yagci
- Department of Chemistry; Istanbul Technical University; Maslak Istanbul 34469 Turkey
| |
Collapse
|
7
|
Mekki A, Ait-Touchente Z, Samanta S, Singh A, Mahmoud R, Chehimi MM, Aswal DK. Polyaniline-Wrapped ZnO Nanorod Composite Films on Diazonium-Modified Flexible Plastic Substrates. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ahmed Mekki
- Ecole Militaire Polytechnique; BP 17, Bordj El Bahri 16111 Algiers Algeria
| | - Zouhair Ait-Touchente
- Univ Paris Diderot; Sorbonne Paris Cité; ITODYS, UMR CNRS 7086; 15 rue J-A de Baïf 75013 Paris France
| | - Soumen Samanta
- Univ Paris Diderot; Sorbonne Paris Cité; ITODYS, UMR CNRS 7086; 15 rue J-A de Baïf 75013 Paris France
- Technical Physics Division; Bhabha Atomic Research Centre (BARC); Mumbai 400085 India
| | - Ajay Singh
- Univ Paris Diderot; Sorbonne Paris Cité; ITODYS, UMR CNRS 7086; 15 rue J-A de Baïf 75013 Paris France
- Technical Physics Division; Bhabha Atomic Research Centre (BARC); Mumbai 400085 India
| | - Rachid Mahmoud
- Ecole Militaire Polytechnique; BP 17, Bordj El Bahri 16111 Algiers Algeria
| | - Mohamed M. Chehimi
- Univ Paris Diderot; Sorbonne Paris Cité; ITODYS, UMR CNRS 7086; 15 rue J-A de Baïf 75013 Paris France
- Université Paris Est; ICMPE; UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| | - Dinesh K. Aswal
- Technical Physics Division; Bhabha Atomic Research Centre (BARC); Mumbai 400085 India
| |
Collapse
|
11
|
Samanta S, Bakas I, Singh A, Aswal DK, Chehimi MM. In situ diazonium-modified flexible ITO-coated PEN substrates for the deposition of adherent silver-polypyrrole nanocomposite films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9397-9406. [PMID: 25027950 DOI: 10.1021/la501909r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we report a simple and versatile process of electrografting the aryl multilayers onto indium tin oxide (ITO)-coated flexible poly(ethylene naphthalate) (PEN) substrates using a diazonium salt (4-pyrrolylphenyldiazonium) solution, which was generated in situ from a reaction between the 4-(1H-pyrrol-1-yl)aniline precursor and sodium nitrite in an acidic medium. The first aryl layer bonds with the ITO surface through In-O-C and Sn-O-C bonds which facilitate the formation of a uniform aryl multilayer that is ∼8 nm thick. The presence of the aryl multilayer has been confirmed by impedance spectroscopy as well as by electron-transfer blocking measurements. These in situ diazonium-modified ITO-coated PEN substrates may find applications in flexible organic electronics and sensor industries. Here we demonstrate the application of diazonium-modified flexible substrates for the growth of adherent silver/polpyrrole nanocomposite films using surface-confined UV photopolymerization. These nanocomposite films have platelet morphology owing to the template effect of the pyrrole-terminated aryl multilayers. In addition, the films are highly doped (32%). This work opens new areas in the design of flexible ITO-conductive polymer hybrids.
Collapse
Affiliation(s)
- Soumen Samanta
- Technical Physics Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India
| | | | | | | | | |
Collapse
|
13
|
Mekki A, Samanta S, Singh A, Salmi Z, Mahmoud R, Chehimi MM, Aswal DK. Core/shell, protuberance-free multiwalled carbon nanotube/polyaniline nanocomposites via interfacial chemistry of aryl diazonium salts. J Colloid Interface Sci 2014; 418:185-92. [DOI: 10.1016/j.jcis.2013.11.077] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 11/27/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
|
14
|
Jlassi K, Mekki A, Benna-Zayani M, Singh A, Aswal DK, Chehimi MM. Exfoliated clay/polyaniline nanocomposites through tandem diazonium cation exchange reactions and in situ oxidative polymerization of aniline. RSC Adv 2014. [DOI: 10.1039/c4ra10329g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Exfoliated, conductive clay/polyaniline nanocomposites were prepared by polymerization of aniline in the presence of diazonium cation exchanged bentonite.
Collapse
Affiliation(s)
- Khouloud Jlassi
- Université de Carthage
- Faculté des Sciences de Bizerte (FSB)
- LACReSNE
- Bizerte, Tunisia
- Institut Supérieur des Sciences et Technologies de l'Environnement (ISSTE)
| | - Ahmed Mekki
- Univ Paris Diderot
- Sorbonne Paris Cité
- ITODYS
- , France
- Ecole Militaire Polytechnique
| | - Mémia Benna-Zayani
- Université de Carthage
- Faculté des Sciences de Bizerte (FSB)
- LACReSNE
- Bizerte, Tunisia
- Institut Supérieur des Sciences et Technologies de l'Environnement (ISSTE)
| | - Ajay Singh
- Technical Physics Division
- Bhabha Atomic Research Centre (BARC)
- Mumbai 400085, India
| | - Dinesh K. Aswal
- Technical Physics Division
- Bhabha Atomic Research Centre (BARC)
- Mumbai 400085, India
| | | |
Collapse
|
15
|
Salmi Z, Benmehdi H, Lamouri A, Decorse P, Jouini M, Yagci Y, Chehimi MM. Preparation of MIP grafts for quercetin by tandem aryl diazonium surface chemistry and photopolymerization. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-0993-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
16
|
Gam-Derouich S, Lamouri A, Redeuilh C, Decorse P, Maurel F, Carbonnier B, Beyazıt S, Yilmaz G, Yagci Y, Chehimi MM. Diazonium salt-derived 4-(dimethylamino)phenyl groups as hydrogen donors in surface-confined radical photopolymerization for bioactive poly(2-hydroxyethyl methacrylate) grafts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8035-8045. [PMID: 22548322 DOI: 10.1021/la300690d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known paint stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1'-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically linked to the grafts by covalent bonds. We used X-ray photoelectron spectroscopy to monitor the chemical changes at the gold surface all along the process from the neat gold to the end-protein-functionalized polymer grafts: the PHEMA graft thickness ranged from 7 to 27 nm, and the activation by 1,1'-carbonyldiimidazole reached 37% of the OH groups, which was sufficient for 90% surface coverage of the grafts by BSA. This work conclusively provides a new approach for bridging reactive and functional polymers to surfaces via aryl diazonium salts in a simple, fast, and efficient approach of importance in biomedical and other applications.
Collapse
Affiliation(s)
- Sarra Gam-Derouich
- ITODYS, UMR CNRS 7086, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|