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Investigation of Pristine and (Mo, W)-Doped Cu11V6O26 for Use as Photoanodes for Solar Water Splitting
Chemistry of Materials ( IF 7.2 ) Pub Date : 2017-11-03 00:00:00 , DOI: 10.1021/acs.chemmater.7b03587 Margaret A. Lumley 1 , Kyoung-Shin Choi 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2017-11-03 00:00:00 , DOI: 10.1021/acs.chemmater.7b03587 Margaret A. Lumley 1 , Kyoung-Shin Choi 1
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The development of new and inexpensive semiconductor electrodes that possess suitable band gap energies and band positions for solar water splitting is of great interest in the field of solar fuel production. In this study, n-type Cu11V6O26 that has a band gap energy of 1.9 eV was produced as a pure, high-quality photoanode, and its properties and stability for photoelectrochemical water splitting were systematically investigated in pH 9.2 and 13 solutions. As Cu11V6O26 photoanodes appeared to suffer from poor charge transport properties, Mo and W doping into the V site was also examined, which considerably improved the photocurrent generation of Cu11V6O26. The band gap energy, band edge positions, flatband potential, photocurrent generation, and photostability of pristine and doped Cu11V6O26 electrodes are discussed in comparison to elucidate the effect of Mo and W doping and to evaluate the promise and limitations of Cu11V6O26 as a photoanode for use in a water splitting photoelectrochemical cell.
中文翻译：
原始和（Mo，W）掺杂的Cu 11 V 6 O 26用作太阳能水分解用光阳极的研究
具有合适的带隙能量和用于太阳能水分解的能带位置的新型且廉价的半导体电极的开发在太阳能燃料生产领域中引起了极大的兴趣。在这项研究中，生产出带隙能量为1.9 eV的n型Cu 11 V 6 O 26作为纯净的高质量光阳极，并在pH 9.2和13下系统地研究了其对光电化学水分解的性质和稳定性。解决方案。由于Cu 11 V 6 O 26光电阳极似乎具有较差的电荷传输性能，因此还检查了Mo和W掺杂到V部位的情况，这大大改善了Cu 11 V的光电流产生6 O 26。比较原始和掺杂的Cu 11 V 6 O 26电极的带隙能，带边缘位置，平带电势，光电流产生以及光稳定性，以阐明Mo和W掺杂的影响并评估Cu的前景和局限性11 V 6 O 26作为用于水分解光电化学电池的光电阳极。
更新日期：2017-11-03
中文翻译：
原始和（Mo，W）掺杂的Cu 11 V 6 O 26用作太阳能水分解用光阳极的研究
具有合适的带隙能量和用于太阳能水分解的能带位置的新型且廉价的半导体电极的开发在太阳能燃料生产领域中引起了极大的兴趣。在这项研究中，生产出带隙能量为1.9 eV的n型Cu 11 V 6 O 26作为纯净的高质量光阳极，并在pH 9.2和13下系统地研究了其对光电化学水分解的性质和稳定性。解决方案。由于Cu 11 V 6 O 26光电阳极似乎具有较差的电荷传输性能，因此还检查了Mo和W掺杂到V部位的情况，这大大改善了Cu 11 V的光电流产生6 O 26。比较原始和掺杂的Cu 11 V 6 O 26电极的带隙能，带边缘位置，平带电势，光电流产生以及光稳定性，以阐明Mo和W掺杂的影响并评估Cu的前景和局限性11 V 6 O 26作为用于水分解光电化学电池的光电阳极。
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