微波合成的用于光催化制氨的钯-二氧化钛
Microwave synthesised Pd-TiO for photocatalytic ammonia production.
作者信息
Walls Jake M, Sagu Jagdeep S, Upul Wijayantha K G
机构信息
Energy Research Laboratory, Department of Chemistry, Loughborough University Loughborough LE11 3TU UK
出版信息
RSC Adv. 2019 Feb 22;9(11):6387-6394. doi: 10.1039/c8ra09762c. eCollection 2019 Feb 18.
Palladium doped anatase TiO nanoparticles were synthesised by a rapid (3 min) one-pot microwave synthesis technique at low temperature and pressure. After being fully characterised by SEM, XRD, Raman, XPS and EDX, photocatalytic nitrate reduction and ammonia production were studied over various dopant levels between 0-3.97 wt% Pd and compared to similar previous literature. Improved yields of ammonia were observed with most dopant levels when compared to non-doped microwave synthesised TiO with 2.65 wt% found to be the optimum dopant level producing 21.2 μmol NH. Electrochemical impedance spectroscopy of TiO and Pd-TiO photoelectrodes revealed improvements in charge transfer characteristics at high Pd dopant levels.
通过快速（3分钟）的低温低压一锅法微波合成技术合成了钯掺杂的锐钛矿型TiO纳米颗粒。在通过扫描电子显微镜（SEM）、X射线衍射（XRD）、拉曼光谱、X射线光电子能谱（XPS）和能谱分析（EDX）进行全面表征后，研究了在0-3.97 wt% Pd的各种掺杂水平下的光催化硝酸盐还原和氨生成情况，并与之前的类似文献进行了比较。与未掺杂的微波合成TiO相比，在大多数掺杂水平下都观察到氨产量有所提高，发现2.65 wt%是产生21.2 μmol NH的最佳掺杂水平。TiO和Pd-TiO光电极的电化学阻抗谱显示，在高Pd掺杂水平下电荷转移特性有所改善。
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