Electrochemical fabrication of mesoporous metal-alloy films

Bashir, Javeria; Chowdhury, Md. Belal; Kathak, Rahanuma Raihanu; Dey, Shuvashis; Tasnim, Atiya Tahira; Amin, Mohammed A.; Kaneti, Yusuf Valentino; Masud, Mostafa Kamal; Hossain, Md. Shahriar A.

doi:10.1039/d2ma00480a

Cited by 8 publications

(7 citation statements)

References 199 publications

(394 reference statements)

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“…If we leave aside the ordered mesoporous metals or alloys, yet at the origin of the elaboration of oriented mesoporous films by electrochemical interfacial surfactant templating [233,234], but implying direct metal electrodeposition (different from the concept of indirect electrogeneration of thin films as discussed in this account) and being the subject of existing well-documented reviews [463][464][465], there are almost no examples of other mesoporous films electrogenerated in the presence of structuredirecting agents. The closest approach is probably the formation of chitosan-based composite films by combining the precipitation of chitosan by electroinduced pH change (easily achievable from an acidic solution at reducing potentials [466]) with the layer-by-layer assembly technique (as shown for alginate-chitosan multilayers [467]) or with other co-deposition or assembly methods [468].…”

Section: Other Mesoporous Films Electrogenerated In the Presence Of S...mentioning

confidence: 99%

Electrogeneration of non-electroactive and non-conducting materials: a counterintuitive concept for the functionalization and nanostructuration of electrode surfaces

Walcarius

2023

Comptes Rendus. Chimie

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Electrodeposition is a long-lasting and efficient process to generate thin or thick films on conductive supports. It is mainly based on electrochemically induced redox reactions involving electroactive precursors, which are intended to form solid deposits onto the electrode surface. More recently, a rather counterintuitive approach has emerged by exploiting electrochemistry to generate non-electroactive and non-conductive thin films (e.g., sol-gel derived materials), based on the electrogeneration of a catalyst that is likely to induce indirectly the formation of a thin film (i.e., without direct electron transfer with the precursors). This account summarizes the major advances made by our group in this field, focusing primarily on electro-induced sol-gel bioencapsulation and electroassisted self-assembly of oriented and functionalized mesoporous silica films.

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Section: Other Mesoporous Films Electrogenerated In the Presence Of S...mentioning

confidence: 99%

Electrogeneration of non-electroactive and non-conducting materials: a counterintuitive concept for the functionalization and nanostructuration of electrode surfaces

Walcarius

2023

Comptes Rendus. Chimie

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“…In addition to coupling different templating strategies, other processes can also be combined with templates to synthesize porous material. This includes modern mechanochemical procedures [80] and electrochemical approaches [81]. The latter comprises of methods such as electrochemically controlled assembly of soft templates and electrosynthesis around soft templates.…”

Section: Template-assisted Pore Formationmentioning

confidence: 99%

“…A combination of both can also be incorporated in a method that fully utilizes electrochemical effect not only to influence the template assembly but also to induce the electrodeposition. For example, this concept can be seen in electrochemical surfactant templating [81,84].…”

Section: Template-assisted Pore Formationmentioning

confidence: 99%

Porous Inorganic Nanomaterials: Their Evolution towards Hierarchical Porous Nanostructures

Jose,

Mathew,

Fernández-Navas

et al. 2024

Micro

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The advancement of both porous materials and nanomaterials has brought about porous nanomaterials. These new materials present advantages both due to their porosity and nano-size: small size apt for micro/nano device integration or in vivo transport, large surface area for guest/target molecule adsorption and interaction, porous channels providing accessibility to active/surface sites, and exposed reactive surface/active sites induced by uncoordinated bonds. These properties prove useful for the development of different porous composition types (metal oxides, silica, zeolites, amorphous oxides, nanoarrays, precious metals, non-precious metals, MOFs, carbon nanostructures, MXenes, and others) through different synthetic procedures—templating, colloidal synthesis, hydrothermal approach, sol-gel route, self-assembly, dealloying, galvanostatic replacement, and so—for different applications, such as catalysis (water-splitting, etc.), biosensing, energy storage (batteries, supercapacitors), actuators, SERS, and bio applications. Here, these are presented according to different material types showing the evolution of the structure design and development towards the formation of hierarchical porous structures, emphasizing that the formation of porous nanostructures came about out of the desire and need to form hierarchical porous nanostructures. Common trends observed across these different composition types include similar (aforementioned) applications and the use of porous nanomaterials as templates/precursors to create novel ones. Towards the end, a discussion on the link between technological advancements and the development of porous nanomaterials paves the way to present future perspectives on these nanomaterials and their hierarchical porous architectures. Together with a summary, these are given in the conclusion.

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“…[ 1 ]. Besides, mesoporous metallic nanostructures have been increasingly showcasing their capability in an abundance of applications including voltage-control of magnetism, electrocatalysis, sensing, etc., owing to their porous architecture (pore sizes in the range of 2 nm to 50 nm), high thermal and electrical conductance, and other interesting properties [ 2 , 3 , 4 ]. In the same thread, dense and mesoporous nanowires (NWs) possess an array of applications credited to their elongated shape and anisotropic physical and magnetic properties, such as in biomedicine, biotechnology, ultrahigh-density magnetic storage, storage media applications, electrocatalysis, surface-enhanced Raman spectroscopy and microelectromechanical systems (MEMS) [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

et al. 2023

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Dense and mesoporous FePd nanowires (NWs) with 45 to 60 at.% Pd content were successfully fabricated by template- and micelle-assisted pulsed potentiostatic electrodeposition using nanoporous anodic alumina and polycarbonate templates of varying pore sizes. An FePd electrolyte was utilized for obtaining dense NWs while a block copolymer, P-123, was added to this electrolyte as the micelle-forming surfactant to produce mesoporous NWs. The structural and magnetic properties of the NWs were investigated by electron microscopy, X-ray diffraction, and vibrating sample magnetometry. The as-prepared NWs were single phase with a face-centered cubic structure exhibiting 3.1 µm to 7.1 µm of length. Mesoporous NWs revealed a core-shell structure where the porosity was only witnessed in the internal volume of the NW while the outer surface remained non-porous. Magnetic measurements revealed that the samples displayed a soft ferromagnetic behavior that depended on the shape anisotropy and the interwire dipolar interactions. The mesoporous core and dense shell structure of the NWs were seen to be slightly affecting the magnetic properties. Moreover, mesoporous NWs performed excellently as SERS substrates for the detection of 4,4′-bipyridine, showing a low detection limit of 10−12 M. The signal enhancement can be attributed to the mesoporous morphology as well as the close proximity of the embedded NWs being conducive to localized surface plasmon resonance.

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Electrochemical fabrication of mesoporous metal-alloy films

Abstract: Nanoarchitectured mesoporous metal alloy films integrating the intrinsic catalytic capabilities of their constituent metals to create a suitable surface morphology as well as different signal transduction and catalytic capabilities. As...

Cited by 8 publications

References 199 publications

Electrogeneration of non-electroactive and non-conducting materials: a counterintuitive concept for the functionalization and nanostructuration of electrode surfaces

Electrogeneration of non-electroactive and non-conducting materials: a counterintuitive concept for the functionalization and nanostructuration of electrode surfaces

Porous Inorganic Nanomaterials: Their Evolution towards Hierarchical Porous Nanostructures

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

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