Fine-tuning mesoporous adsorbent for simultaneous ultra-trace palladium(II) detection, separation and recovery
Fine-tuning mesoporous adsorbent for simultaneous ultra-trace palladium(II) detection, separation and recovery
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DOI：
10.1016/j.jiec.2014.03.013
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发表时间：
2015-01
影响因子：
6.1
通讯作者：
M. R. Awual;M. Hasan
中科院分区：
文献类型：
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作者：
M. R. Awual;M. Hasan
采用功能化介孔二氧化硅微调介孔吸附剂，建立了测定和萃取废水中痕量钯(II)的简便、灵敏的方法。该吸附剂性能稳定，易于检测，通过电荷转移(强π-π转变)络合机理吸附和回收Pd(II)离子。系统地考察了洗脱液的pH值、接触时间、初始浓度、选择性和灵敏度、洗脱液的种类和用量以及各种离子干扰对检测和吸附的最佳实验条件。测定的最大吸附容量为191.35 mg/g，成功地用于环境废水中Pd(II)的萃取。
A simple and sensitive method was applied for determination and extraction of trace level palladium(II) in wastewater by using functionalized mesoporous silica based fine-tuning mesoporous adsorbent. The adsorbent was stable and easy to detect, adsorb and recover Pd(II) ions by charge transfer (intense π–π transition) complexation mechanism. The optimum experimental conditions such as pH, contact time, initial concentration, selectivity and sensitivity, type and amount of eluent for elution and various ionic interferences on detection and sorption were systematically evaluated. The determined maximum sorption capacity was 191.35 mg/g. The proposed method was applied successfully for extraction of Pd(II) in environmental wastewater samples.