B2B marketplace · Technology-grade grown diamond
B2B marketplace · Technology-grade grown diamond
Boron-doped diamond electrodes break down persistent pollutants, including PFAS, into CO₂ and water.
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In advanced electrochemical and chemical processing systems, tech-grade synthetic diamond is utilized as a conductive electrode material, primarily in the form of Boron-Doped Diamond (BDD). It is deployed in electrochemical advanced oxidation processes (EAOP) for recalcitrant industrial wastewater treatment, advanced chemical synthesis, heavy metal detection, and high-sensitivity electrochemical biosensors. Integrated as anodes or micro-electrode arrays in electrochemical reactors, BDD electrodes generate powerful hydroxyl radicals (· OH) directly at their surface, oxidizing complex organic pollutants, pharmaceutical residues, and persistent chemicals (such as PFAS) completely into harmless carbon dioxide and water.
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Boron-Doped Diamond is the premier electrochemical electrode material because it possesses the widest working potential window in aqueous solutions of any known electrode material (up to 3.5 V). This wide window prevents premature water electrolysis (oxygen and hydrogen evolution), allowing electrical energy to go directly toward target chemical reactions and radical production. Unlike conventional metal oxides, lead dioxide, or platinum electrodes, BDD exhibits near-zero surface fouling, an extremely low background capacitive current, and absolute chemical inertness. It withstands concentrated acids, harsh alkalis, and strong oxidative environments for years without corrosion or structural degradation.
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Electrochemical applications utilize Chemical Vapor Deposition (CVD) grown Boron-Doped Diamond (BDD), available as thin films deposited on conductive metal/silicon substrates or as solid, free-standing BDD plates. To exhibit high metallic-like electrical conductivity (resistivity < 0.01 Ω · cm), BDD requires heavy boron incorporation exceeding the Mott transition threshold ([B] > 1020 atoms/cm3 or > 1,000 ppm). For large-scale industrial water treatment cell designs, polycrystalline BDD coatings are synthesized onto robust niobium (Nb), titanium (Ti), or silicon carbide substrates. For precision bio-analytical sensing, smooth polycrystalline or single-crystal BDD surfaces are utilized to minimize background noise and ensure precise bio-functionalization.
Key figure
Up to 3.5 V
The widest working potential window in aqueous solutions of any known electrode material
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Applications
Radiation-hard, solar-blind diamond detectors that keep working where silicon fails.
Ultra-hard, low-friction diamond coatings for seals, bearings, pumps and cutting tools.
Diamond spreads heat away from high-power RF electronics, diode laser arrays and AI computing hardware.
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