Early transition metal nano-carbides and nano-hydrides from solid-state metathesis initiated at room temperature

André, Rémi F.; D’Accriscio, Florian; Freitas, Alexy P.; Crochet, Guillaume; Bouillet, Corinne; Bahri, Mounib; Ersen, Ovidiu; Sánchez, Clément; Carenco, Sophie

doi:10.1039/d1gc01097b

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…The solution was heated in the furnace at a temperature such as 300 o C and heat it at high temperature due to the combustion and drying was the final stage [94,95]. The list of previous studies on combustion techniques is presented in Table 10 Table Pyrolysis technique is the second high-temperature process to produce a stoichiometric and very crystallined HA powders [72].…”

Section: High-temperature Processesmentioning

confidence: 99%

Synthesis Techniques of Bioceramic Hydroxyapatite for Biomedical Applications

Sadiq

Sudin

Idris

et al. 2023

JBBBE

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The need to develop surviving implants and bone substitutes with good biocompatibility, mechanical strength and bioactivity, without causing toxicity, immune rejection and cancer had attracted the attention of many researchers over the years. Hydroxyapatite (HA) is one of the excellent calcium phosphates and major mineral component of vertebrate bone and teeth, which considerably enhances the biocompatibility, mechanical strength and bioactivity of artificial biomaterials in the body system. In addition, it creates porous and rough coated surface that aids the cell attachment, proliferation and the growth of tissue on the bone implants. Due to its high demand in biomedical applications, scientists had developed several, simple and efficient techniques to produce HA. This review outlines several techniques of manufacturing HA and summarizes the merits and demerits of each technique. Keywords: Biomaterials, calcium phosphate, hydroxyapatite, preparation techniques and bone

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Section: High-temperature Processesmentioning

confidence: 99%

Synthesis Techniques of Bioceramic Hydroxyapatite for Biomedical Applications

Sadiq

Sudin

Idris

et al. 2023

JBBBE

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“…[24,25] Moreover, the desired carbides are often observed to coexist with several other phases. André et al [26] have described a synthetic method initiated at room temperature which produces transition metal carbides mixed with oxides and hydrides.…”

Section: Introductionmentioning

confidence: 99%

“…André et al. [ 26 ] have described a synthetic method initiated at room temperature which produces transition metal carbides mixed with oxides and hydrides.…”

Section: Introductionmentioning

confidence: 99%

η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network

Blin

Girard

Fossard

et al. 2023

Small

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This paper describes a simple, two‐steps chemical pathway to obtain bimetallic carbide nanoparticles (NPs) of general formula MxM″yC, also called η‐carbides. This process allows for a control of the chemical composition of metals present in the carbides (M = Co and M″ = Mo or W). The first step involves the synthesis of a precursor consisting of a network of octacyanometalates. The second step consists in a thermal degradation of the previously obtained octacyanometalates networks under neutral atmosphere (Ar or N2). It is shown that this process results in the formation of carbide NPs with diameter of ≈ 5nm, and the stoichiometries Co3M’3C, Co6M’6C, Co2M’4C for the CsCoM’ systems.

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“…In the present study, we have attempted to fabricate NbC sheets through a bottom-up approach where carbon atoms occupy the interstitial sites in Nb atoms’ lattice . The commonly used synthesis methods to fabricate NbC include carburization of metal oxide nanoparticles, heat treatment of niobium citrate, and chemical vapor deposition. − , The conventional physicochemical methods are usually limited by their reaction conditions and thus can be replaced with greener methods of material production. There are few reports available for green methods, which were employed to synthesize TMCs such as NbC crystalline powder preparation at room temperature through mechanochemical processing .…”

Section: Introductionmentioning

confidence: 99%

Anaerobe Syntrophic Co-culture-Mediated Green Synthesis of Ultrathin Niobium Carbide (NbC) Sheets for Flexoelectricity Generation

Mahle

Mahapatra

Singh

et al. 2022

ACS Sustainable Chem. Eng.

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Niobium carbide (NbC x )-based materials have garnered significant attention in energy-and power-based applications. The physiochemistry-mediated preparation of two-dimensional (2D) NbC structures is often limited by extremely high-temperature and -pressure reaction conditions conjugated with toxic chemicals. In the present study, a unique biobased strategy, utilizing a solid−gas reaction, is developed, which involves the carburization of niobium salt (NbCl 5 )-based oxides using methane (CH 4 ) and other metabolic gases produced by methanogen syntrophic culture. Thermodynamic calculations were performed to comprehend the reaction conditions of the biosystem during NbC formation. The bioprepared NbC sheets were found to be ∼10 nm thin and were studied for their potential in energy harvesting applications. The strain-induced charge generation was evaluated by fabricating a flexoelectric energy harvester with NbC sheets as a flexoelectric material. The maximum power output was ∼2.64 mW/m 2 for 8.8 N applied force. We obtained clear evidence of flexoelectricity in NbC using Raman analysis. Finally, external pressure-, magnetic force-, and temperature-dependent responses were recorded to visualize the practical applications of NbC-based flexible flexoelectric nanogenerators in wearable electronics and sensing.

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Early transition metal nano-carbides and nano-hydrides from solid-state metathesis initiated at room temperature

Abstract: Transition metal carbides (TMCs) have attracted great interest due to their mechanical and catalytic properties but their syntheses generally require energy-consuming processes with temperatures above 800 °C. We report here...

Cited by 3 publications

References 45 publications

Synthesis Techniques of Bioceramic Hydroxyapatite for Biomedical Applications

Synthesis Techniques of Bioceramic Hydroxyapatite for Biomedical Applications

η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network

Anaerobe Syntrophic Co-culture-Mediated Green Synthesis of Ultrathin Niobium Carbide (NbC) Sheets for Flexoelectricity Generation

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