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中文摘要：
研究了三氧化二钒（V_2O_3）活化过硫酸钠（SPS）降解2,4,6-三氯酚（TCP）的效果,分别考察了V_2O_3投加量、SPS和TCP浓度对其降解的影响。结果表明,在V_2O_3投加量为0.05 g·L（-1）,SPS浓度为1.0 mmol·L（-1）,TCP初始浓度为5.0mg·L（-1）时,反应24 h,有72.4%的TCP被降解。提高V_2O_3投加量不利于TCP的降解,而增加SPS浓度能有效增加TCP的降解速率;利用自由基淬灭反应和电子顺磁共振技术（EPR）对反应体系的主导自由基进行了鉴定,发现羟基是体系降解TCP的主要活性物种,推测并初步证实了V_2O_3活化SPS的过程,发现了二氧化钒（VO_2）和五氧化二钒（V_2O_5）也能活化SPS降解TCP。
英文摘要：
In the present study,activation of persulfate with V_2O_3 for 2,4,6-TCP degradation was investigated,and the effects of V_2O_3 loading,SPS concentration on 2,4,6-TCP degradation was also studied.The experimental results showed that 72.4% of 5.0 mg·L~（-1）2,4,6-TCP was degraded with 1.0 mmol·L~（-1）SPS in the presence of 0.05 g·L~（-1）V_2O_3 within 24 h,which indicated that SPS can be efficiently activated with V_2O_3 for 2,4,6-TCP degradation.Increasing V_2O_3 loading inhibited 2,4,6-TCP degradation,while increasing SPS concentration enhanced its degradation.Electron paramagnetic resonance technique coupled with free radical quenching studies were used to identify the dominant reactive species for 2,4,6-TCP degradation in the V_2O_3/SPS system.The results indicated that hydroxyl radical was the dominant reactive species for 2,4,6-TCP degradation.The likely process for SPS activation was proposed,and was supported the fact that SPS can be activated with VO_2 and V_2O_5 for 2,4,6-TCP degradation.
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