title: Phosphorus Cation Doping: A New Strategy for Boosting Photoelectrochemical Performance on TiO2Nanotube Photonic Crystals.
abstract: Photoelectrochemical (PEC) water splitting is a promising technique for sustainable hydrogen generation. However, PEC performance on current semiconductors needs further improvement. Herein, a phosphorus cation doping strategy is proposed to fundamentally boost PEC performance on TiO2nanotube photonic crystal (TiO2NTPC) photoelectrodes in both the visible-light region and full solar-light illumination. The self-supported P-TiO2NTPC photoelectrodes are fabricated by a facile two-step electrochemical anodization method and subsequent phosphidation treatment. The Ti4+is partially replaced by P cations (P5+) from the crystal lattice, which narrows the band gap of TiO2and induces charge imbalance by the formation of Ti-O-P bonds. We believe the combination of unique photonic nanostructures of TiO2NTPCs and P cation doping strategy will open up a new opportunity for enhancing PEC performance of TiO2-based photoelectrodes.
authors: School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
authors: Zhenzhen
authors: Z
authors: Li
authors: School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
authors: Yanmei
authors: Y
authors: Xin
authors: School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
authors: Wenlong
authors: W
authors: Wu
authors: School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
authors: Baihe
authors: B
authors: Fu
authors: School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, China.
authors: Zhonghai
authors: Z
authors: Zhang
keywords: TiO2 nanotube; phosphorus cation; photoelectrochemical water splitting; photonic crystal