Abstract 17α-acetylestradiol (EE2) as an environmental endocrine disruptor (EDCs) with strong estrogenic effect and stable chemical properties. Water treatment technologies involving photocatalytic decomposition of pollutants technology are widely used to degrade pollutants in water, having excellent research value and good applicability prospects. A series of photocatalysts (AgI/BiOI/BiPO4, AgI/BiOI and AgI/BiPO4) were prepared by a ion exchange route at room temperature and analyzed by different characterization methods. The results showed that AgI/BiOI/BiPO4 exhibited excellent properties: (1) improved visible light photoresponse, (2) improved stability and (3) reduced recombination rate of electron-hole pairs. AgI/BiOI/BiPO4 showed excellent photodegradation activity for the 17α-ethynylestradiol (EE2): The removal rate of EE2 was close to reach 100 % in 8 min under visible light. The value of reaction rate constant of AgI/BiOI/BiPO4 (2:2:2) was 11.5, 5.6, 2.5 and 1.7 times higher than AgI, BiOI, AgI/BiOI, and AgI/BiPO4, respectively. Finally, the possible photocatalytic mechanism of the AgI/BiOI/BiPO4 multiheterojunction was proposed.

中文翻译：

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具有高光催化活性的 AgI/BiOI/BiPO4 多异质结的制备

摘要 17α-乙酰雌二醇（EE2）作为一种环境内分泌干扰物（EDCs），具有强烈的雌激素作用和稳定的化学性质。光催化分解污染物技术的水处理技术被广泛应用于降解水中的污染物，具有很好的研究价值和良好的应用前景。在室温下通过离子交换路线制备了一系列光催化剂（AgI/BiOI/BiPO4、AgI/BiOI 和 AgI/BiPO4），并通过不同的表征方法进行分析。结果表明，AgI/BiOI/BiPO4 表现出优异的性能：(1) 改善可见光光响应，(2) 提高稳定性和 (3) 降低电子-空穴对的复合率。AgI/BiOI/BiPO4 对 17α-乙炔雌二醇 (EE2) 显示出优异的光降解活性：EE2在可见光下8分钟去除率接近100%。AgI/BiOI/BiPO4 (2:2:2) 的反应速率常数值分别是 AgI、BiOI、AgI/BiOI 和 AgI/BiPO4 的 11.5、5.6、2.5 和 1.7 倍。最后，提出了AgI/BiOI/BiPO4多异质结可能的光催化机理。