2026 Takamasa Ishigaki: Materials Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Materials Science	41	12681	12267	801	764	234	7698

Overview

Takamasa Ishigaki is affiliated with Hosei University in Japan and specializes in materials science, engineering, and energy disciplines. Their research primarily focuses on materials chemistry, renewable energy, sustainability, electrical and electronic engineering, mechanical engineering, and spectroscopy.

Their extensive work covers several key topics including:

Advanced Photocatalysis Techniques
TiO2 Photocatalysis and Solar Cells
Mesoporous Materials and Catalysis
Copper-based Nanomaterials and Applications
ZnO Doping and Properties
Quantum Dots Synthesis and Properties
Advanced Materials and Composites

Among the recent scholarly contributions by Takamasa Ishigaki are the following papers:

Enhanced visible-light photocatalytic activity of anatase-rutile mixed-phase nano-size powder given by high-temperature heat treatment, 2020, Royal Society Open Science
Fabrication of porous (Ba,Sr)(Co,Fe)O3-δ (BSCF) ceramics using gelatinization and retrogradation phenomena of starch as pore-forming agent, 2020, Ceramics International
Fabrication and characterization of zeolite bulk body containing mesopores and macropores using starch as pore-forming agent, 2022, Advanced Powder Technology
Spontaneously formed gradient chemical compositional structures of niobium doped titanium dioxide nanoparticles enhance ultraviolet- and visible-light photocatalytic performance, 2021, Scientific Reports
Effect of crystalline orientation on photocatalytic performance for Nb-doped TiO2 nanoparticles, 2021, Advanced Powder Technology

Takamasa Ishigaki has frequently collaborated with several researchers, including:

Tetsuo Uchikoshi
Naoki Tarutani
Kento Ishii
Satoshi Koyasu
Masako Uematsu

Their publications commonly appear in notable journals such as:

Langmuir
Journal of the Japan Society of Powder and Powder Metallurgy
Advanced Powder Technology
Royal Society Open Science
Ceramics International

Best Publications

Diffusion of oxide ion vacancies in perovskite-type oxides

Takamasa Ishigaki;Shigeru Yamauchi;Kohji Kishio;Junichiro Mizusaki

534
Citations
Anatase, Brookite, and Rutile Nanocrystals via Redox Reactions under Mild Hydrothermal Conditions: Phase-Selective Synthesis and Physicochemical Properties

Ji-Guang Li;Takamasa Ishigaki;Xudong Sun

498
Citations
Wavelength-sensitive photocatalytic degradation of methyl orange in aqueous suspension over iron(III)-doped TiO2 nanopowders under UV and visible light irradiation.

Wang Xh;Li Jg;Kamiyama H;Moriyoshi Y

433
Citations
Monodispersed Colloidal Spheres for Uniform Y2O3:Eu3+ Red-Phosphor Particles and Greatly Enhanced Luminescence by Simultaneous Gd3+ Doping

Ji-Guang Li;Xiaodong Li;Xudong Sun;Takamasa Ishigaki

371
Citations
Pyrogenic Iron(III)-Doped TiO2 Nanopowders Synthesized in RF Thermal Plasma: Phase Formation, Defect Structure, Band Gap, and Magnetic Properties

Wang Xh;Li Jg;Kamiyama H;Katada M

329
Citations
Effect of hydrogen doping on ultraviolet emission spectra of various types of ZnO

Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Takashi Sekiguchi

241
Citations
Ultrasonic Dispersion of TiO2 Nanoparticles in Aqueous Suspension

Kimitoshi Sato;Ji-Guang Li;Hidehiro Kamiya;Takamasa Ishigaki

228
Citations
Charge separation at the rutile/anatase interface: a dominant factor of photocatalytic activity

Takahira Miyagi;Takahira Miyagi;Masayuki Kamei;Takefumi Mitsuhashi;Takamasa Ishigaki

198
Citations
Uniform Colloidal Spheres for (Y1−xGdx)2O3 (x = 0–1): Formation Mechanism, Compositional Impacts, and Physicochemical Properties of the Oxides

Ji-Guang Li;Xiaodong Li;Xudong Sun;Takayasu Ikegami

194
Citations
Thermodynamic analysis of nucleation of anatase and rutile from TiO2 melt

Yali Li;Takamasa Ishigaki

187
Citations
Phase structure and luminescence properties of Eu3+-doped TiO2 nanocrystals synthesized by Ar/O2 radio frequency thermal plasma oxidation of liquid precursor mists.

Ji-Guang Li;Xiaohui Wang;Kenji Watanabe;Takamasa Ishigaki

171
Citations
Brookite → rutile phase transformation of TiO2 studied with monodispersed particles

Ji-Guang Li;Takamasa Ishigaki

164
Citations
Tracer diffusion coefficient of oxide ions in LaCoO3 single crystal

Takamasa Ishigaki;Shigeru Yamauchi;Junichiro Mizusaki;Kazuo Fueki

146
Citations
Passivation of active recombination centers in ZnO by hydrogen doping

Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Hiroyuki Taguchi

140
Citations
Preparation of pure rutile and anatase TiO2 nanopowders using RF thermal plasma

Seung-Min Oh;Takamasa Ishigaki

137
Citations
Monodispersed Spherical Particles of Brookite‐Type TiO2: Synthesis, Characterization, and Photocatalytic Property

Ji-Guang Li;Chengchun Tang;Di Li;Hajime Haneda

133
Citations
Cobalt-Doped TiO2 Nanocrystallites: Radio-Frequency Thermal Plasma Processing, Phase Structure, and Magnetic Properties

Ji-Guang Li;Robert Büchel;Masaaki Isobe;Takao Mori

123
Citations
Enhancement and patterning of ultraviolet emission in ZnO with an electron beam

Rongguo Xie;Takashi Sekiguchi;Takamasa Ishigaki;Naoki Ohashi

122
Citations
Controlling the synthesis of TaC nanopowders by injecting liquid precursor into RF induction plasma

Takamasa Ishigaki;Seung-Min Oh;Seung-Min Oh;Ji-Guang Li;Dong-Wha Park

118
Citations
Defect‐Mediated Photoluminescence Dynamics of Eu3+‐Doped TiO2 Nanocrystals Revealed at the Single‐Particle or Single‐Aggregate Level

Takashi Tachikawa;Takamasa Ishigaki;Ji-Guang Li;Mamoru Fujitsuka

115
Citations