Radiolysis of water at the surface of ZrO2 nanoparticles

被引：2

作者：

McGrady, John ^{[1
]}

Yamashita, Shinichi ^{[1
]}

Kano, Sho ^{[1
]}

Yang, Huilong ^{[2
]}

Kimura, Atsushi ^{[3
]}

Taguchi, Mitsumasa ^{[3
]}

Abe, Hiroaki ^{[1
]}

机构：

[1] Univ Tokyo, Nucl Profess Sch, Sch Engn, 2-22 Shirakata Shirane,Tokai Mura, Ibaraki 3191188, Japan

[2] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[3] Natl Inst Quantum Sci & Technol, Takasaki Adv Radiat Res Inst, Quantum Beam Sci Res Directorate, 1233 Watanuki Machi, Takasaki, Gunma 3701292, Japan

来源：

RADIATION PHYSICS AND CHEMISTRY | 2023年 / 209卷

关键词：

Radiolysis; Zirconium oxide; Nanoparticles; Hydrated electron; Hydrogen; Interface; H-2; PRODUCTION; MOLECULAR-HYDROGEN; HYDRATED ELECTRON; H2O2; DECOMPOSITION; GAMMA-RADIOLYSIS; SILICA; ENERGY; MECHANISM; REEVALUATION; IRRADIATION;

D O I：

10.1016/j.radphyschem.2023.110970

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Radiolysis of water at the surface of ZrO2 nanoparticles was investigated by measuring the production of radi-olysis products from nanoparticle/water mixtures under irradiation. A pulse radiolysis study and a gamma radiolysis study were conducted to observe and quantify radiolytically generated hydrated electrons (e-aq) and H2 from ZrO2/water mixtures. The radiolytic yield of e-aq and H2 from ZrO2 nanoparticles (20-5000 nm in diameter) was found to increase with increasing nanoparticle surface area indicating surface enhanced radiolysis. This was attributed to radiolysis of surface adsorbed water molecules. The thickness of the surface adjacent water layer was shown to affect radiolysis, with smaller numbers of water layers increasing radiolysis.

引用

页数：7

共 44 条

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