Increased Photocatalytic Properties of Nanoporous GaN-Based MQWs/TiO<sub>2</sub> with Nanoporous GaN Distributed Bragg Reflectors
Nanoporous gallium nitride (GaN)-based multiple quantum wells (MQWs) with nanoporous GaN distributed Bragg reflectors (NP-MQWs) are used as substrates for the regrowth of niobium (Nb) doped TiO2 thin films via pulsed laser deposition (PLD). Electrochemical tests present that nanoporous heterojunction structures of NP-MQWs-based TiO2 (NP-MQWs/TiO2) increase the separation and transfer efficiency of the photogenerated charge. Compared with as-grown MQWs-based TiO2 (AG-MQWs/TiO2), NP-MQWs/TiO2 shows significantly increased photodegradation amounts of Rhodamine B (RhB) at various pHs, which can be put down to decreased stress, improved crystal quality, and rising light absorption of the MQWs structure and the TiO2 layer. Moreover, the photocatalytic mechanism of NP-MQWs/TiO2 is revealed.
Authors
- Qinglong Fang
- Zhengquan Guo
- Dezhong Cao (ORCID: https://orcid.org/0000-0001-5783-256X)
- Wenbao Gao
- Yue Hao (ORCID: https://orcid.org/0000-0002-6084-1544)
- Dingze Lu (ORCID: https://orcid.org/0000-0001-8915-8071)
- Cheng-Jun Xia (ORCID: https://orcid.org/0000-0002-3388-1137)
- Ningning Feng (ORCID: https://orcid.org/0000-0002-9641-9337)
- Mengqi Tian (ORCID: https://orcid.org/0009-0005-7571-3536)
- Tongle Guan
- Lianbi Li (ORCID: https://orcid.org/0000-0003-1447-1834)
- Yuxuan Diwu
- Xiaohua Ma (ORCID: https://orcid.org/0000-0002-4325-3361)
- Sen Wang (ORCID: https://orcid.org/0000-0002-6621-5325)
- He Wang (ORCID: https://orcid.org/0000-0002-0304-9673)
- Feifei Wang (ORCID: https://orcid.org/0000-0001-8502-966X)
- Ma Li (ORCID: https://orcid.org/0000-0002-8948-0391)
- Tiantian Luo (ORCID: https://orcid.org/0000-0002-1895-190X)
- Hu Zhou
Institutions
- Xidian University (CN)
- Xi'an Polytechnic University (CN)
Publication Details
- Journal
- Crystal Growth & Design
- Published
- 2025-04-08
- DOI
- https://doi.org/10.1021/acs.cgd.4c01758
- Citations
- 3
- Primary Topic
- Ga2O3 and related materials
- Type
- article
- Field-Weighted Citation Impact
- 1.28