TY - JOUR
T1 - Carbon Quantum Dots sensitized Vertical WO3 Nanoplates with Enhanced Photoelectrochemical Properties
AU - Zhao, Zhefei
AU - Butburee, Teera
AU - Peerakiatkhajohn, Piangjai
AU - Lyu, Miaoqiang
AU - Wang, Songcan
AU - Wang, Lianzhou
AU - Zheng, Huajun
N1 - Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2016/7/16
Y1 - 2016/7/16
N2 - WO3 nanoplates (WO3NP) sensitizing with carbon quantum dots (CQDs) photoanode was successfully fabricated by simple hydrothermal and immersing process under mild temperature. The as-prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM, Raman spectrometer and ultraviolet visible spectrometry (UV-vis). The WO3 photoanode after CQDs loading exhibited an enhanced photocurrent density of ∼1.18 mA cm−2 at 1.23 V vs RHE, compared to 0.96 mA cm−2 of pristine WO3 under simulated solar light illumination. Moreover, the modified WO3 nanoplates with CQDs show a superior ability to capture visible light, resulting in more than 1.6 folds of photocurrent density enhancement. Meanwhile, a lower onset potential can be obtained after sensitizing, which is caused by the change of band energy positions. Notably, this efficient sensitization of CQDs could introduce a promising route to improve the light harvesting and efficiency of photoelectrochemical properties for WO3 based photoanode.
AB - WO3 nanoplates (WO3NP) sensitizing with carbon quantum dots (CQDs) photoanode was successfully fabricated by simple hydrothermal and immersing process under mild temperature. The as-prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM, Raman spectrometer and ultraviolet visible spectrometry (UV-vis). The WO3 photoanode after CQDs loading exhibited an enhanced photocurrent density of ∼1.18 mA cm−2 at 1.23 V vs RHE, compared to 0.96 mA cm−2 of pristine WO3 under simulated solar light illumination. Moreover, the modified WO3 nanoplates with CQDs show a superior ability to capture visible light, resulting in more than 1.6 folds of photocurrent density enhancement. Meanwhile, a lower onset potential can be obtained after sensitizing, which is caused by the change of band energy positions. Notably, this efficient sensitization of CQDs could introduce a promising route to improve the light harvesting and efficiency of photoelectrochemical properties for WO3 based photoanode.
KW - Carbon quantum dots
KW - photoelectronchemical
KW - WO nanoplate
UR - http://www.scopus.com/inward/record.url?scp=85009906876&partnerID=8YFLogxK
U2 - 10.1002/slct.201600718
DO - 10.1002/slct.201600718
M3 - 文章
AN - SCOPUS:85009906876
SN - 2365-6549
VL - 1
SP - 2772
EP - 2777
JO - ChemistrySelect
JF - ChemistrySelect
IS - 11
ER -