TiN/anatase/rutile phase junction obtained by in-situ thermal transformation for efficient photothermal-assisted photocatalytic hydrogen generation

Zhao，Wen Qin1; Liao，Yu Xin1; Chen，Yu Ting1; Ma，Liang1; Yu，Zi Yang1; Ding，Si Jing2; Qin，Ping Li1; Chen，Xiang Bai1; Wang，Qu Quan3

2024-09-01

10.1016/j.jcis.2024.04.223

Journal of Colloid and Interface Science   影响因子和分区

0021-9797

1095-7103

Phase junctions exhibit great potential in photocatalytic energy conversion, yet the narrow light response region and inefficient charge transfer limit their photocatalytic performance. Herein, an anatase/rutile phase junction modified by plasmonic TiN and oxygen vacancies (TiN/(A-R-TiO-Ov)) is prepared through an in-situ thermal transformation from TiN for efficient photothermal-assisted photocatalytic hydrogen production for the first time. The content of TiN, oxygen vacancies, and phase components in TiN/(A-R-TiO-Ov) hybrids can be well-adjusted by tuning the heating time. The as-prepared photocatalysts display a large specific area and wide light absorption due to the synergistic effect of plasmonic excitation, oxygen vacancies, and bandgap excitations. Meanwhile, the multi-interfaces between TiN, anatase, and rutile provide built-in electric fields for efficient separation of photoinduced carriers and hot electron injection via ohmic contact and type-Ⅱ band arrangement. As a result, the TiN/(A-R-TiO-Ov) photocatalyst shows an excellent photocatalytic hydrogen generation rate of 15.07 mmol/g/h, which is 20.6 times higher than that of titanium dioxide P25. Moreover, temperature-dependent photocatalytic tests reveal that the excellent photothermal conversion caused by plasmonic heating and crystal lattice vibrations in TiN/(A-R-TiO-Ov) has about 25 % enhancement in photocatalysis (18.84 mmol/g/h). This work provides new inspiration for developing high-performance photocatalysts by optimizing charge transfer and photothermal conversion.

Oxygen vacancy Phase junction Photocatalysis Photothermal conversion Plasmon

SCI ; EI

英语

其他

20241916046549

Charge transfer ; Electric fields ; Hydrogen production ; Lattice vibrations ; Light absorption ; Ohmic contacts ; Oxide minerals ; Oxygen vacancies ; Photocatalysis ; Plasmonics ; Titanium nitride

Minerals:482.2 ; Gas Fuels:522 ; Electricity: Basic Concepts and Phenomena:701.1 ; Light/Optics:741.1 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Plasma Physics:932.3 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1

CHEMISTRY

2-s2.0-85192215224

Scopus

1.Hubei Key Laboratory of Optical Information and Pattern Recognition,Wuhan Institute of Technology,Wuhan,430205,China
2.School of Mathematics and Physics,China University of Geosciences (Wuhan),Wuhan,430074,China
3.School of Science,Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China

Zhao，Wen Qin,Liao，Yu Xin,Chen，Yu Ting,et al. TiN/anatase/rutile phase junction obtained by in-situ thermal transformation for efficient photothermal-assisted photocatalytic hydrogen generation[J]. Journal of Colloid and Interface Science,2024,669:383-392.

Zhao，Wen Qin.,Liao，Yu Xin.,Chen，Yu Ting.,Ma，Liang.,Yu，Zi Yang.,...&Wang，Qu Quan.(2024).TiN/anatase/rutile phase junction obtained by in-situ thermal transformation for efficient photothermal-assisted photocatalytic hydrogen generation.Journal of Colloid and Interface Science,669,383-392.

Zhao，Wen Qin,et al."TiN/anatase/rutile phase junction obtained by in-situ thermal transformation for efficient photothermal-assisted photocatalytic hydrogen generation".Journal of Colloid and Interface Science 669(2024):383-392.