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Unravelling microstructure-electroactivity relationships in free-standing polycrystalline boron-doped diamond: A mapping study

Liu, Z. (author), Baluchová, S. (author), Li, Z. (author), Gonzalez Garcia, Y. (author), Hall, Clive E. (author), Buijnsters, J.G. (author)

In this work, four different techniques were concurrently applied to study the interplay between local electroactivity and electrode surface characteristics of free-standing, polycrystalline boron-doped diamond (BDD). Scanning electron microscopy, electron back-scatter diffraction, Raman mapping and scanning electrochemical microscopy were...

journal article 2024

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A combined experimental and computational approach to unravel degradation mechanisms in electrochemical wastewater treatment

Feijoo, Sara (author), Baluchová, S. (author), Kamali, Mohammadreza (author), Buijnsters, J.G. (author), Dewil, Raf (author)

Electrochemical wastewater treatment is a promising technique to remove recalcitrant pollutants from wastewater. However, the complexity of elucidating the underlying degradation mechanisms hinders its optimisation not only from a techno-economic perspective, as it is desirable to maximise removal efficiencies at low energy and chemical...

journal article 2024

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Photoactivity of amorphous and crystalline TiO₂ nanotube arrays (TNA) films in gas phase CO₂ reduction to methane with simultaneous H₂ production

Santos, Janaina S. (author), Fereidooni, Mohammad (author), Márquez, Victor (author), Paz-López, Christian V. (author), Villanueva, Martin S. (author), Buijnsters, J.G. (author), Praserthdam, Supareak (author), Praserthdam, Piyasan (author)

This study assessed the photoactivity of amorphous and crystalline TiO₂ nanotube arrays (TNA) films in gas phase CO₂ reduction. The TNA photocatalysts were fabricated by titanium anodization and submitted to an annealing treatment for crystallization and/or cathodic reduction to introduce Ti³⁺ and oxygen...

journal article 2024

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Single-crystal vs polycrystalline boron-doped diamond anodes: Comparing degradation efficiencies of carbamazepine in electrochemical water treatment

Feijoo, Sara (author), Baluchová, S. (author), Kamali, Mohammadreza (author), Buijnsters, J.G. (author), Dewil, Raf (author)

The ongoing challenge of water pollution by contaminants of emerging concern calls for more effective wastewater treatment to prevent harmful side effects to the environment and human health. To this end, this study explored for the first time the implementation of single-crystal boron-doped diamond (BDD) anodes in electrochemical wastewater...

journal article 2024

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Templated Synthesis of Diamond Nanopillar Arrays Using Porous Anodic Aluminium Oxide (AAO) Membranes

Zhang, C. (author), Liu, Z. (author), Li, Chun (author), Buijnsters, J.G. (author)

Diamond nanostructures are mostly produced from bulk diamond (single- or polycrystalline) by using time-consuming and/or costly subtractive manufacturing methods. In this study, we report the bottom-up synthesis of ordered diamond nanopillar arrays by using porous anodic aluminium oxide (AAO). Commercial ultrathin AAO membranes were adopted as...

journal article 2023

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Antimicrobial properties dependence on the composition and architecture of copper-alumina coatings prepared by plasma electrolytic oxidation (PEO)

Santos, Janaina S. (author), Márquez, Victor (author), Buijnsters, J.G. (author), Praserthdam, Supareak (author), Praserthdam, Piyasan (author)

This study presents environmentally friendly and low-cost synthetic routes to produce antimicrobial coatings over 5052 Al alloy based on plasma electrolytic oxidation (PEO) technology. Two methodologies were explored: the decoration with copper and anodic doping with copper ions. The porous oxide layers produced in silicate media presented...

journal article 2023

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Heavily boron-doped diamond grown on scalable heteroepitaxial quasi-substrates: A promising single crystal material for electrochemical sensing applications

Liu, Z. (author), Baluchová, S. (author), Frota Sartori, A. (author), Li, Z. (author), Gonzalez Garcia, Y. (author), Schreck, Matthias (author), Buijnsters, J.G. (author)

In this work, three distinct heteroepitaxial single-crystal boron-doped diamond (SC-BDD) electrodes were fabricated and subjected to detailed surface analysis and electrochemical characterization. Specifically, the heteroepitaxy approach allowed to synthesize large-area (1 cm²) and heavily-doped (100)-oriented SC-BDD electrodes....

journal article 2023

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Modification-free boron-doped diamond as a sensing material for direct and reliable detection of the antiretroviral drug nevirapine

Baluchová, S. (author), Mamaloukou, A. (author), Koldenhof, Rombert H.J.M. (author), Buijnsters, J.G. (author)

In this work, non-modified boron-doped diamond (BDD) was employed first time ever as the sensing material for the in-depth voltammetric study of the antiretroviral drug nevirapine (NVP) used to treat HIV infections. Two types of electrode surface pre-treatments, anodic oxidation and alumina-polishing, yielded BDD of different surface...

journal article 2023

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Surface Nanotexturing of Boron-Doped Diamond Films by Ultrashort Laser Pulses

Mastellone, Matteo (author), Bolli, Eleonora (author), Valentini, Veronica (author), Orlando, Stefano (author), Lettino, Antonio (author), Polini, Riccardo (author), Buijnsters, J.G. (author), Bellucci, Alessandro (author), Trucchi, Daniele Maria (author)

Polycrystalline boron-doped diamond (BDD) films were surface nanotextured by femtosecond pulsed laser irradiation (100 fs duration, 800 nm wavelength, 1.44 J cm⁻² single pulse fluence) to analyse the evolution of induced alterations on the surface morphology and structural properties. The aim was to identify the occurrence of laser...

journal article 2023

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Inkjet Printing-Manufactured Boron-Doped Diamond Chip Electrodes for Electrochemical Sensing Purposes

Liu, Z. (author), Baluchová, S. (author), Brocken, Bob (author), Ahmed, Essraa (author), Pobedinskas, Paulius (author), Haenen, Ken (author), Buijnsters, J.G. (author)

Fabrication of patterned boron-doped diamond (BDD) in an inexpensive and straightforward way is required for a variety of practical applications, including the development of BDD-based electrochemical sensors. This work describes a simplified and novel bottom-up fabrication approach for BDD-based three-electrode sensor chips utilizing direct...

journal article 2023

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On the electrooxidation of kraft black liquor on boron-doped diamond

Oliveira, Raisa C.P. (author), Buijnsters, J.G. (author), Mateus, Maria M. (author), Bordado, João C.M. (author), Santos, Diogo M.F. (author)

Black liquor (BL) is a highly alkaline byproduct from pulp mills. BL is rich in inorganic and organic compounds, with lignin (a natural polymer) being the most abundant. Following a waste biorefinery concept, the electrolysis of BL comprises lignin oxidation at the anode and hydrogen evolution at the cathode. These paired electrochemical...

journal article 2022

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The effect of boron concentration on the electrical, morphological and optical properties of boron-doped nanocrystalline diamond sheets: Tuning the diamond-on-graphene vertical junction

Rycewicz, M.K. (author), Nosek, Adrian (author), Shin, D. (author), Ficek, Mateusz (author), Buijnsters, J.G. (author), Bogdanowicz, Robert (author)

In this paper, the effect of boron doping on the electrical, morphological and structural properties of free-standing nanocrystalline diamond sheets (thickness ~ 1 μm) was investigated. For this purpose, we used diamond films delaminated from a mirror-polished tantalum substrate following a microwave plasma-assisted chemical vapor deposition...

journal article 2022

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Experimental insights into anodic oxidation of hexafluoropropylene oxide dimer acid (GenX) on boron-doped diamond anodes

Suresh Babu, Diwakar (author), Mol, J.M.C. (author), Buijnsters, J.G. (author)

GenX is the trade name of the ammonium salt of hexafluoropropylene oxide dimer acid (HFPO-DA) and is used as a replacement for the banned perfluorooctanoic acid (PFOA). However, recent studies have found GenX to be more toxic than PFOA. This work deals with the electrochemical degradation of HFPO-DA using boron-doped diamond anodes. For the...

journal article 2022

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Simple, controllable and environmentally friendly synthesis of FeCoNiCuZn-based high-entropy alloy (HEA) catalysts, and their surface dynamics during nitrobenzene hydrogenation

Márquez, Victor (author), Santos, Janaina S. (author), Buijnsters, J.G. (author), Praserthdam, Supareak (author), Praserthdam, Piyasan (author)

High-entropy alloys (HEAs) have rapidly become one of the hottest research topics in several fields, including materials science, corrosion technology, and catalysis because of their multiple advantages and their potential applications. In this study, using a novel straightforward electroless deposition method, multi-elemental alloys ...

journal article 2022

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Role of sp² carbon in non-enzymatic electrochemical sensing of glucose using boron-doped diamond electrodes

Liu, Z. (author), Frota Sartori, A. (author), Buijnsters, J.G. (author)

Boron-doped diamond (BDD) is of increasing interest for applications in electrochemical sensing. It is well known that the sp² carbon content in BDD influences its electrochemical properties as electrode material. In this work, evidence is provided that the surface sp² carbon content plays a crucial role in the...

journal article 2021

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Porphyrin–Nanodiamond Hybrid Materials—Active, Stable and Reusable Cyclohexene Oxidation Catalysts

Dias, Lucas D. (author), Rodrigues, Fábio M.S. (author), Calvete, Mário J.F. (author), Carabineiro, Sónia A.C. (author), Scherer, Marisa D. (author), Caires, Anderson R.L. (author), Buijnsters, J.G. (author), Figueiredo, José L. (author), Bagnato, Vanderlei S. (author), Pereira, Mariette M. (author)

The quest for active, yet “green” non-toxic catalysts is a continuous challenge. In this work, covalently linked hybrid porphyrin–nanodiamonds were prepared via ipso nitro substitution reaction and characterized by X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy, infrared spectroscopy (IR) and thermogravimetry-differential...

journal article 2020

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Nanorods grown by copper anodizing in sodium carbonate

Stepniowski, W.J. (author), Paliwoda, Damian (author), Abrahami, S.T. (author), Michalska-Domańska, M.E. (author), Landskron, Kai (author), Buijnsters, J.G. (author), Mol, J.M.C. (author), Terryn, H.A. (author), Misiolek, Wojciech Z. (author)

Self-organized anodization of copper in 0.1 M Na2CO3 electrolyte was studied in order to obtain nanostructured oxide surface on the metal substrate. Linear sweep voltammetry (LSV) revealed that the most suitable voltage range for anodic film formation is from 3 to 31 V. In this range (except between 3 and 7 V), the oxide is formed as nanorods,...

journal article 2020

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Antimicrobial and Antibiofilm Properties of Fluorinated Polymers with Embedded Functionalized Nanodiamonds

Nunes-Pereira, João (author), Costa, Pedro (author), Fernandes, Liliana (author), Carvalho, Estela O. (author), Fernandes, Margarida M. (author), Carabineiro, Sónia A.C. (author), Buijnsters, J.G. (author), Tubio, Carmen R. (author), Lanceros-Mendez, Senentxu (author)

Environmentally resilient antimicrobial coatings are becoming increasingly required for a wide range of applications. For this purpose, nanocomposite thin films of poly(vinylidene fluoride) (PVDF) filled with several types of functionalized nanodiamonds (NDs) were processed by solvent casting. The effects of ND inclusion and functionalization...

journal article 2020

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Effect of lateral reinforcements on the adhesion and friction of micropillar adhesives

van Assenbergh, S.P. (author), Zhang, K. (author), Buijnsters, J.G. (author), Dodou, D. (author)

Micropillar adhesives have gained increasing attention because they generate high pull-off forces. The generation of high friction, however, has been proven difficult with such geometries, because micropillars tend to buckle under shear loading. Here, we fabricated orthogonal arrays of composite poly-dimethoxysiloxane (PDMS) micropillars with...

journal article 2020

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Template-assisted bottom-up growth of nanocrystalline diamond micropillar arrays

Frota Sartori, A. (author), Overes, Bart (author), Fanzio, P. (author), Tsigkourakos, M.C. (author), Sasso, L. (author), Buijnsters, J.G. (author)

Micro-patterned diamond has been investigated for numerous applications, such as biomimetic surfaces, electrodes for cell stimulation and energy storage, photonic structures, imprint lithography, and others. Controlled patterning of diamond substrates and moulds typically requires lithography-based top-down processing, which is costly and...

journal article 2019