Fourier IR spectroscopy study of the radiation-thermal decomposition of water in the nano-ZrO2+nano-Al2O3+H2O system

IF 0.7 Q3 PHYSICS, MULTIDISCIPLINARY
T. Agayev, S. Melikova, N. Gadzhieva
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引用次数: 0

Abstract

This paper presents the results of Fourier transform infrared spectroscopic studies of the radiation-thermal decomposition of water in the heterogeneous system nano-ZrO 2 +nano-Al 2 O 3 +H 2 O at various weight ratios of nano-oxides in the temperature range T = 373 ÷ 673 K and during radiation exposure. It has been established that the main intermediate products of radiation-heterogeneous decomposition of water are molecular oxygen and other oxygen-containing radical ion groups generated by gamma irradiation, as well as surface hydrides of zirconium and aluminum. Based on a comparative analysis of changes in the intensity of the absorption bands of molecular water and surface hydroxyl groups characterizing nano-ZrO 2 and nano-Al 2 O 3 as a function of temperature, the radiation-catalytic activity of nano-ZrO 2 was detected at a (cid:28)xed value of the absorbed dose. W RT (H 2 ) and its radiation-chemical yields G (H 2 ) were determined. A stimulating role in the radiation-thermal decomposition of H 2 O in a heterogeneous nano-ZrO 2 +nano-Al 2 O 3 system ( T = 373 ÷ 673 K) has been established. Fourier IR spectroscopy, nano-zirconium oxide, nano-aluminum oxide, γ -irradiation, radiation-thermal decomposition.
纳米zro2 +纳米al2o3 +H2O体系中水辐射热分解的傅立叶红外光谱研究
本文用傅里叶变换红外光谱研究了不同重量比的纳米氧化物在温度T = 373 ÷ 673 K和辐射暴露时,纳米zro2 +纳米al 2o3 + h2o非均相体系中水的辐射热分解的结果。确定了水的辐射非均相分解的主要中间产物是γ辐射产生的分子氧和其他含氧自由基基团,以及锆和铝的表面氢化物。通过对比分析纳米zro2和纳米al2o3分子水和表面羟基的吸收带强度随温度的变化,在(cid:28)固定吸收剂量下检测了纳米zro2的辐射催化活性。测定了wrt (h2)及其辐射化学产率G (h2)。在T = 373 ÷ 673 K的非均相纳米- zro2 +纳米- al2o3体系中,h2o的辐射热分解具有刺激作用。傅里叶红外光谱,纳米氧化锆,纳米氧化铝,γ辐照,辐射热分解。
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来源期刊
Journal of Physical Studies
Journal of Physical Studies PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.00
自引率
20.00%
发文量
19
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