TY - JOUR
T1 - Highly Stable Phosphonate-Based MOFs with Engineered Bandgaps for Efficient Photocatalytic Hydrogen Production
AU - Zhu, Yun-Pei
AU - Yin, Jun
AU - Abou-Hamad, Edy
AU - Liu, Xiaokang
AU - Chen, Wei
AU - Yao, Tao
AU - Mohammed, Omar F.
AU - Alshareef, Husam N.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Research reported in this work was supported by King Abdullah University of Science and Technology (KAUST). XAFS measurements were performed on the X-ray beamlines at Beijing Synchrotron Radiation Facility (BSRF), China.
PY - 2020/3/4
Y1 - 2020/3/4
N2 - Photoactive metal-organic frameworks (MOFs) represent one of the most promising materials for photocatalytic hydrogen production, but phosphonate-based MOFs have remained largely underdeveloped compared to other conventional MOFs. Herein, a photocatalyst of 1D titanium phosphonate MOF is designed through an easy and scalable stirring hydrothermal method. Homogeneous incorporation of organophosphonic linkers can narrow the bandgap, which is due to the strong electron-donating ability of the OH functional group that can efficiently shift the top of the valence band, moving the light absorption to the visible portion of the spectrum. In addition, the unique 1D nanowire topology enhances the photoinduced charge carrier transport and separation. Accordingly, the titanium phosphonate nanowires deliver remarkably enhanced photocatalytic hydrogen evolution activity under irradiation of both visible light and a full-spectrum simulator. Such concepts of engineering both nanostructures and electronic states herald a new paradigm for designing MOF-based photocatalysts.
AB - Photoactive metal-organic frameworks (MOFs) represent one of the most promising materials for photocatalytic hydrogen production, but phosphonate-based MOFs have remained largely underdeveloped compared to other conventional MOFs. Herein, a photocatalyst of 1D titanium phosphonate MOF is designed through an easy and scalable stirring hydrothermal method. Homogeneous incorporation of organophosphonic linkers can narrow the bandgap, which is due to the strong electron-donating ability of the OH functional group that can efficiently shift the top of the valence band, moving the light absorption to the visible portion of the spectrum. In addition, the unique 1D nanowire topology enhances the photoinduced charge carrier transport and separation. Accordingly, the titanium phosphonate nanowires deliver remarkably enhanced photocatalytic hydrogen evolution activity under irradiation of both visible light and a full-spectrum simulator. Such concepts of engineering both nanostructures and electronic states herald a new paradigm for designing MOF-based photocatalysts.
UR - http://hdl.handle.net/10754/661929
UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201906368
UR - http://www.scopus.com/inward/record.url?scp=85080958729&partnerID=8YFLogxK
U2 - 10.1002/adma.201906368
DO - 10.1002/adma.201906368
M3 - Article
C2 - 32129916
SN - 0935-9648
SP - 1906368
JO - Advanced Materials
JF - Advanced Materials
ER -
