Flow-through working electrode based on free-standing porous boron-doped diamond

Baroch, Martin; Baluchová, Simona; Taylor, Andrew; Míka, Luděk; Fischer, Jan; Dejmková, Hana; Sedláková, Silvia; Klimša, Ladislav; Kopeček, Jaromı́r; Schwarzová‐Pecková, Karolina

doi:10.1016/j.electacta.2022.140758

Cited by 4 publications

(2 citation statements)

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“…Many attempts have been made to overgrow diamond film on 3D structures, such as clustered SiO 2 microspheres template, [ 149 ] wire‐like SiO 2 , Ti template spin, [ 150 ] porous TiO 2 layer, [ 151 ] 3D network metal foam, [ 6a,145 ] and organic polymer. [ 152 ] Meanwhile, the deposition of diamond films on template‐free diamond‐SiC (Figure 11d) [ 153 ] and diamond‐nanodiamond particles [ 144,154 ] has been reported, where some composite phases were selectively etched away in the later step by post‐acid removement (Figure 11e,f).…”

Section: D Diamond Nanostructuresmentioning

confidence: 99%

Diamond Nanostructures at Different Dimensions: Synthesis and Applications

Li,

Yang,

Jiang

et al. 2024

Adv Funct Materials

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Diamond materials at different nanoscales provide them various characteristics such as elastic mechanical properties in needle‐like nanotips, flexibility of 2D films having atomic thicknesses and constant hardness under high pressures, superior field electron emission properties of vertically wall‐like composites, unprecedented hardness and improved toughness of nanotwin diamond (nt‐diamond), while the inherent excellent properties of bulk diamond (e.g., high Young's modulus, robustness, biocompatibility) can be maintained. In this paper, the newly born 1D diamond nanothreads, 2D diamanes, as well as 3D nt‐diamond are briefly reviewed. The innovations, progresses and achievements of different dimensional diamond nanostructures, covering lines, planes and volumes are overviewed. The topical problems and future outlooks of diamond nanostructures are outlined and discussed.

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Section: D Diamond Nanostructuresmentioning

confidence: 99%

Diamond Nanostructures at Different Dimensions: Synthesis and Applications

Li,

Yang,

Jiang

et al. 2024

Adv Funct Materials

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“…The main technique used for the deposition of a boron-doped diamond (BDD) film on a conductive substrate is hot filament (HFCVD) or microwave plasma-assisted chemical vapor deposition (MPCVD). The current bottom-up methods focus on overgrown CVD-BDD films on already porous substrates, at moderate temperatures (450–600 °C), such as SiO 2 nanofibers and microspheres, porous silicon substrate, carbon nanotubes, and copper and tungsten foams …”

Section: Introductionmentioning

confidence: 99%

Generation of Nanoporous Diamond Electrodes Fabricated by a Low-Cost Process at Moderate Temperatures

Pfeifer

Szabó

Potocký

et al. 2023

ACS Appl. Eng. Mater.

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A unique approach to fabricate nanoporous diamond morphology using molten salt thermal etching (MSTE) at a moderate temperature (450 °C) of boron-doped ultrananocrystalline diamond (B-UNCD) electrodes is presented. The developed one-step method is simple, environmentally friendly, inexpensive, and provides nanoporous diamond electrodes with nearly unlimited Z-depths. Moreover, it is also applicable to non-conductive diamond films. The appropriate etching mechanism is attributed to the preferential etching of sp 2 carbon phases localized at the grain boundaries by MSTE-generated highly oxidizing species. The fabricated B-UNCD electrodes show an increase in the electrochemical active area (ECSA) of 15% after 3 h of the MSTE treatment, making them promising materials to use as sensors for electroactive species. Such nanoporous B-UNCD presents a favorable working electrode with increased sensitivity for the electrochemical detection of 4nitrophenol. Moreover, the fabricated nanoporous B-UNCD electrode showed 49 times higher capacitance (3534 μF cm −2 ) than the pristine (non-porous) B-UNCD material (71.50 μF cm −2 ).

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