Article

Selective synthesis of β-TaON: The critical influence of oxygen partial pressure in ammonolysis

Mirabbos HojamberdievDepartment of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro, Tokyo 152-8550, JapanRonald VargasEscuela de Bio y Nanotecnologías, Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8, 2, B7130IWA Chascomús, Provincia de Buenos Aires, ArgentinaLorean MadrizEscuela de Bio y Nanotecnologías, Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8, 2, B7130IWA Chascomús, Provincia de Buenos Aires, ArgentinaDilshod NematovPhysical−Technical Institute, National Academy of Sciences of Tajikistan, Dushanbe 734063, TajikistanUlugbek ShaislamovCenter for Development of Nanotechnology at the National University of Uzbekistan, University Str. 4, 100174 Tashkent, UzbekistanHajime WagataDepartment of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1-D615 Higashimita, Tama, Kawasaki 214-8571, JapanYuta KubotaDepartment of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro, Tokyo 152-8550, JapanKunio YubutaInstitute for Aqua Regeneration, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanKatsuya TeshimaInstitute for Aqua Regeneration, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanNobuhiro MatsushitaDepartment of Materials Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro, Tokyo 152-8550, Japan

Dalton Transactionsjournal2025en

ABI

Abstract

heterostructures exhibit significantly enhanced photocurrent densities, the possibility of operation at higher power densities, and a favorable band alignment conducive to efficient water oxidation due to enhanced light absorption, effective spatial separation of charge carriers, and improved interfacial charge transfer. The introduction of a sacrificial electron donor further enhances PEC performance by promoting interfacial charge transfer and suppressing charge carrier recombination. These findings establish oxygen partial pressure as a critical synthesis parameter for controlling phase composition and tuning the optoelectronic properties of tantalum (oxy)nitrides, offering a promising strategy for the development of high-performance photoanodes for solar fuel production.

Topics

Inorganic Chemistry and Materials Advanced Photocatalysis Techniques Semiconductor materials and devices

Identifiers

DOI: 10.1039/d5dt01193k

Citations and references

Cited by 1 56 references

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