Selenium-doped phenolic resin spheres: Ultra-high adsorption capacity of noble metals
Selenium-doped phenolic resin spheres: Ultra-high adsorption capacity of noble metals
复制标题
掺硒酚醛树脂球：对贵金属具有超高吸附能力
DOI：
10.1016/j.reactfunctpolym.2019.06.019
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发表时间：
2019-09-01
影响因子：
5.1
通讯作者：
Zhu, Xiulin
中科院分区：
文献类型：
--
作者：
Qian, Zhuangfei;Zhang, Yuanyuan;Zhu, Xiulin
以4，4 '-硒代二酚和间苯二酚为原料，在氨水催化下与甲醛反应，合成了掺硒酚醛树脂微球（Se-RS）。在超声波加速作用下，整个反应在5 min内完成。以此方式制备具有受控Se含量和Se分布的Se-RS。所制备的Se-RS在水溶液中对Pd 2+和Au 3+的吸附能力增强。吸附的Au ~（3+）可在不加还原剂的条件下在Se-RS表面原位还原为Au-0。在Au ~（3+）浓度极低的情况下，硒RS对电子废弃物、污水和其他水体中的金具有很好的萃取能力。
Selenium-doped phenolic resin spheres (Se-RS) was synthesized by the reaction of 4,4'-selenodiphenol and resorcinol with formaldehyde catalyzing by ammonia. The whole reaction was completed within 5 min under the acceleration of ultra-sonication. Se-RS with controlled Se-content and Se-distribution were prepared in such manner. The obtained Se-RS showed enhanced Pd2+ and Au3+ adsorption capacity in aqueous solution. The adsorbed Au3+ can be further reduced to Au-0 at the surface of Se-RS in situ without additional reducing agent. The Se-RS exhibited exceptional extract capacity of gold from e-waste sewage and other aqua even its Au3+ concentration was extremely low.