Wei Jian-jun, Xu Xin-hua, Wang Da-hui
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China.
J Environ Sci (China). 2004;16(4):621-3.
Transformation of chlorophenols by nanoscale bimetallic particles represents one of the latest innovative technologies for environmental remediation. Nanoscale Pd/Fe bimetallic particles were synthesized in the laboratory for treatment of o-chlorophenol. Most of the nanoscale particles are in the size range of 20-100 nm. BET specific surface area of the nanoscale Pd/Fe particles is 12.4 m2/g. In comparison, a commercially available Fe powder( < 100 mesh) has a specific surface area of just 0.49 m2/g. Batch experiments demonstrated that the nanoscale Pd/Fe bimetallic particles can effectively dechlorinate o-chlorophenol. Dechlorination efficiency is affected by the mass fraction of Pd in the bimetal, nanoscale Pd/Fe mass concentration and mixing intensity.
纳米双金属颗粒对氯酚的转化是环境修复领域最新的创新技术之一。实验室合成了纳米级Pd/Fe双金属颗粒用于处理邻氯酚。大多数纳米颗粒的尺寸范围为20-100nm。纳米级Pd/Fe颗粒的BET比表面积为12.4m²/g。相比之下,市售的铁粉(<100目)比表面积仅为0.49m²/g。批次实验表明,纳米级Pd/Fe双金属颗粒能有效使邻氯酚脱氯。脱氯效率受双金属中Pd的质量分数、纳米级Pd/Fe质量浓度和混合强度的影响。