Increase of OH radical yields due to the decomposition of hydrogen peroxide by gold nanoparticles under X-ray irradiation

被引：2

作者：

Okazaki, Yu ^{[1
]}

Kusumoto, Tamon ^{[2
]}

Roux, Stephane ^{[3
]}

Hirayama, Ryoichi ^{[2
]}

Fromm, Michel ^{[3
]}

Bazzi, Rana ^{[3
]}

Kodaira, Satoshi ^{[2
]}

Kataoka, Jun ^{[1
]}

机构：

[1] Waseda Univ, Grad Sch Adv Sci & Engn, 3-4-1 Okubo,Shinjuku Ku, Tokyo 1698555, Japan

[2] Natl Inst Quantum Sci & Technol QST, 4-9-1 Anagawa,Inage Ku, Chiba 2638555, Japan

[3] Univ Franche Comte, UMR CNRS Chrono Environm 6249, F-25030 Besancon, France

来源：

RSC ADVANCES | 2024年 / 14卷 / 14期

关键词：

D O I：

10.1039/d4ra00208c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We elucidate the decomposition mechanism of hydrogen peroxide, which is formed by water radiolysis, by gold nanoparticles (GNPs) under X-ray irradiation. The variations in yields of hydrogen peroxide generated in the presence of GNPs are evaluated using the Ghormley technique. The increase of yields of OH radicals has been quantified using Ampliflu (R) Red solutions. Almost all hydrogen peroxide generated by irradiation of <25 Gy is decomposed by GNPs, while the yield of OH radicals increases by 1.6 times. The amount of OH radicals thus obtained is almost equivalent to that of the decomposed hydrogen peroxide. The decomposition of hydrogen peroxide is an essential reaction to produce additional OH radicals efficiently in the vicinity of GNPs.

引用

页码：9509 / 9513

页数：5

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