Experimental studies on the chemiluminescence reaction mechanism of carbonate/bicarbonate and hydrogen peroxide in the presence of cobalt(II)

被引：85

作者：

Liang, Shu-Xuan ^{[1
,2
]}

Zhao, Li-Xia ^{[3
]}

Zhang, Bo-Tao ^{[3
]}

Lin, Jin-Ming ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Peoples R China

[3] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem, Beijing 100085, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2008年 / 112卷 / 04期

关键词：

D O I：

10.1021/jp0761822

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：

Chemiluminescence (CL) phenomena of carbonates or bicarbonates of potassium, sodium, or ammonium with hydrogen peroxide in the presence of cobalt sulfate were reported. After cobalt(II) solution was injected into the mixture of carbonate/bicarbonate and hydrogen peroxide, a CL signal was given out briefly. The CL conditions of these systems were optimized. The CL reaction mechanisms were studied experimentally by examining the spectrum emitted by the CL system and the effect of various free radical scavengers on CL emission intensity. The results showed that the maximal emission wavelengths of the CO32--H2O2-Co2+ and HCO3--H2O2-Co2+ systems were 440 and 490 nm, respectively. As a result, a radical scavenger of ascorbic acid, thiourea, and superoxide dismutase exhibited different effects on these CL systems. The different CL mechanisms involving the carbon dioxide dimer and the oxygen dimer were revealed, respectively.

引用

页码：618 / 623

页数：6

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