Revealing the true impact of interstitial and substitutional nitrogen doping in TiO₂ on photoelectrochemical applications

Abstract

A holistic approach to fully characterize the physical–chemical properties of N doped TiO2 and evaluate its true impact on photoelectrochemical applications.

Nanostructured IrOx supported on N-doped TiO2 as an efficient electrocatalyst towards acidic oxygen evolution reaction

“…The keys lie in the formation of Ti 3+ species and the oxygen vacancies due to the N-doping treatment. 49,50 Ti 3+ with reductibility can easily adsorb the IrCl 6 2− precursor ion with high-valent Ir 4+ species during the synthesis process, and oxygen vacancies can act as the anchoring sites for effectively adsorbing IrCl 6 2− . Therefore, improved dispersion of IrO x on N–TiO 2 is acquired.…”

Ionic liquid based dopant-free band edge shift in BiVO4 particles for photocatalysis under simulated sunlight irradiation

“…7,8 Many semiconducting photocatalytic materials such as metal oxides, ternary oxides, nitrides, halides, and sulfides have been developed for energy and environmental applications due to their promising photocatalytic activities and non-toxicity. [9][10][11][12][13][14] Among these photocatalysts, bismuth vanadate (BiVO 4 ) is of crucial importance due to its outstanding features, such as a low bandgap (B2.4 eV), a maximum photocurrent density of 7.5 mA cm À2 , B9% of solar to hydrogen conversion efficiency, excellent dispersibility, non-toxicity, high resistance to corrosion and promising photocatalytic activity under visible light illumination. [15][16][17] BiVO 4 crystalizes in three phases, namely, tetragonal zircon, tetragonal scheelite, and monoclinic scheelite, of which monoclinic scheelite presents excellent photoactivity.…”

l-Cysteine-Terminated Triangular Silver Nanoplates/MXene Nanosheets are Used as Electrochemical Biosensors for Efficiently Detecting 5-Hydroxytryptamine

“…Due to its excellent electrical conductivity (2400 S/cm), high surface area (98 m 2 /g), good hydrophilicity, and chemical stability, it is used in ion batteries, super capacitors, electrocatalysis, sensors, and other fields. MXene is synthesized by selectively etching away the A layer from the parent MAX phase and has the following general formula: M n +1 X n T x , where n is an integer from 1 to 3 and T is surface functional groups (−OH, O, and −F), M represents early transition metals, such as Ti, Nb, V, Ta, Cr, and Mo, and A represents the IIIA or IVA family element. − AgNPs have good catalytic activity and biocompatibility , but easily aggregate, which requires a carrier to support their dispersion. Their size, shape, and distribution will also affect the performance of the sensor after forming the composite material.…”