Voltammetric and amperometric study of electrochemical activity of boron-doped polycrystalline diamond thin film electrodes

Wu, Jiali; Zhu, Jian; Shan, Lei; Cheng, Nanfei

doi:10.1016/0003-2670(96)00236-x

Cited by 15 publications

(8 citation statements)

References 5 publications

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“…All of the three samples also show a feature near 220 nm, which corresponds to the absorption for photon energies above the band gap of the diamond (λ < 225 nm). Polycrystalline diamond films show a feature near 240 nm, which is attributed to a direct (momentum-conserving) optical transition of bulk silicon [ 52 , 53 ]. A similar peak on 240 nm in the DRS of silicon ( Figure S8 ) for comparison further proved the conclusion.…”

Section: Resultsmentioning

confidence: 99%

Visible-Light Activation of Photocatalytic for Reduction of Nitrogen to Ammonia by Introducing Impurity Defect Levels into Nanocrystalline Diamond

Liu

Abbasi

et al. 2020

Materials

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Nitrogen impurity has been introduced in diamond film to produce a nitrogen vacancy center (NV center) toward the solvated electron-initiated reduction of N2 to NH3 in liquids, giving rise to extend the wavelength region beyond the diamond’s band. Scanning electron microscopy and X-ray diffraction demonstrate the formation of the nanocrystalline nitrogen-doped diamond with an average diameter of ten nanometers. Raman spectroscopy and PhotoLuminescence (PL) spectrum show characteristics of the NV0 and NV− charge states. Measurements of photocatalytic activity using supraband (λ < 225 nm) gap and sub-band gap (λ > 225 nm) excitation show the nitrogen-doped diamond significantly enhanced the ability to reduce N2 to NH3 compared to the polycrystalline diamond and single crystal diamond (SCD). Our results suggest an important process of internal photoemission, in which electrons are excited from negative charge states into conduction band edges, presenting remarkable photoinitiated electrons under ultraviolet and visible light. Other factors, including transitions between defect levels and processes of reaction, are also discussed. This approach can be especially advantageous to such as N2 and CO2 that bind only weakly to most surfaces and high energy conditions.

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Section: Resultsmentioning

confidence: 99%

Visible-Light Activation of Photocatalytic for Reduction of Nitrogen to Ammonia by Introducing Impurity Defect Levels into Nanocrystalline Diamond

Liu

Abbasi

et al. 2020

Materials

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“…Entretanto, a utilização de reatores de alta potência tornou-se mais comum e, pela primeira vez, no ano de 2000, foi possível produzir um pequeno pedaço de diamante, cerca de 0,2 g, por menos de US$ 1,0 91 . Isto viabilizou economicamente o uso de diamante e permitiu que os pesquisadores explorassem seu amplo conjunto de propriedades para uma grande variedade de aplicações [92][93][94][95] .…”

Section: Caracterização Morfológica Estrutural E Elétrica De Filmes unclassified

Filmes de diamante CVD dopado com boro. Parte I . Histórico, produção e caracterização

Barros¹,

Ribeiro²,

An-Sumodjo³

et al. 2005

Quím. Nova

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BORON-DOPED CVD DIAMOND FILMS. PART I. HISTORY, PRODUCTION AND CHARACTERIZATION. This review presents a brief account concerning the production, characterization and evolution of the knowledge in the area of diamond and boron-doped diamond films. The most important methods used for the growth of these films, such as chemical vapor deposition and high pressure/high temperature systems, as well as the several kinds of reactors which can be employed are reviewed. However, larger emphasis is given to the CVD method. Morphological, structural and electric properties of these films, as well as their role in the performance of voltammetric electrodes for electrochemistry and electroanalytical chemistry are also discussed.

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“…In recent years, boron-doped diamond (BDD) electrodes have attracted considerable attention for use in electroanalytical detection of a variety of analytes, including trace metals [16][17][18][19][20][21][22][23][24][25][26][27]. What makes BDD electrodes superior for such applications are their excellent properties, including chemical inertness, corrosion resistance, durability, good electrical conductivity, low background current and a large potential window between oxygen and hydrogen evolution [28,29].…”

Section: Introductionmentioning

confidence: 99%

Mercury detection at boron doped diamond electrodes using a rotating disk technique

Manivannan

Ramakrishnan

Seehra

et al. 2005

Journal of Electroanalytical Chemistry

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Voltammetric and amperometric study of electrochemical activity of boron-doped polycrystalline diamond thin film electrodes

Cited by 15 publications

References 5 publications

Visible-Light Activation of Photocatalytic for Reduction of Nitrogen to Ammonia by Introducing Impurity Defect Levels into Nanocrystalline Diamond

Visible-Light Activation of Photocatalytic for Reduction of Nitrogen to Ammonia by Introducing Impurity Defect Levels into Nanocrystalline Diamond

Filmes de diamante CVD dopado com boro. Parte I . Histórico, produção e caracterização

Mercury detection at boron doped diamond electrodes using a rotating disk technique

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