铋掺杂纳米零价铁：一种用于氯霉素降解和产氢的新型催化剂。
Bismuth-Doped Nano Zerovalent Iron: A Novel Catalyst for Chloramphenicol Degradation and Hydrogen Production.
作者信息
Sayed Murtaza, Khan Aamir, Rauf Sajid, Shah Noor S, Rehman Faiza, A Al-Kahtani Abdullah, Khan Javed Ali, Iqbal Jibran, Boczkaj Grzegorz, Gul Ikhtiar, Bushra Maleeha
机构信息
Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan.
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, PR China.
出版信息
ACS Omega. 2020 Nov 19;5(47):30610-30624. doi: 10.1021/acsomega.0c04574. eCollection 2020 Dec 1.
In this study, we showed that doping bismuth (Bi) at the surface of Fe (Bi/Fe, bimetallic iron system)-synthesized by a simple borohydride reduction method-can considerably accelerate the reductive degradation of chloramphenicol (CHP). At a reaction time of 12 min, 62, 68, 74, 95, and 82% degradation of CHP was achieved with Fe, Bi/Fe-1 [1% (w/w) of Bi], Bi/Fe-3 [3% (w/w) of Bi], Bi/Fe-5 [5% (w/w) of Bi], and Bi/Fe-8 [8% (w/w) of Bi], respectively. Further improvements in the degradation efficiency of CHP were observed by combining the peroxymonosulfate (HSO ) with Bi/Fe-5 (i.e., 81% by Bi/Fe-5 and 98% by the Bi/Fe-5/HSO system at 8 min of treatment). Interestingly, both Fe and Bi/Fe-5 showed effective H production under dark conditions that reached 544 and 712 μM by Fe and Bi/Fe-5, respectively, in 70 mL of aqueous solution containing 0.07 g (i.e., at 1 g L concentration) of the catalyst at ambient temperature.
在本研究中，我们表明，通过简单的硼氢化物还原法合成的铁表面掺杂铋（Bi/Fe，双金属铁体系）可显著加速氯霉素（CHP）的还原降解。在12分钟的反应时间内，Fe、Bi/Fe-1[1%（w/w）Bi]、Bi/Fe-3[3%（w/w）Bi]、Bi/Fe-5[5%（w/w）Bi]和Bi/Fe-8[8%（w/w）Bi]对CHP的降解率分别达到62%、68%、74%、95%和82%。通过将过一硫酸盐（HSO）与Bi/Fe-5结合，观察到CHP降解效率进一步提高（即处理8分钟时，Bi/Fe-5为81%，Bi/Fe-5/HSO体系为98%）。有趣的是，在黑暗条件下，Fe和Bi/Fe-5均显示出有效的氢气产生，在含有0.07 g（即浓度为1 g L）催化剂的70 mL水溶液中，室温下Fe和Bi/Fe-5分别达到544和712 μM。
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