He Wang, Dezhong Cao*, Yuxuan Diwu, Wangxin Gao, Hu Zhou, Feifei Wang, Tongle Guan, Tiantian Luo, Li Ma, Sen Wang, Zhengquan Guo, Mengqi Tian, Qinglong Fang, Dingze Lu, Ningning Feng, Lianbi Li, Caijuan Xia, Xiaohua Ma and Yue Hao,
{"title":"纳米多孔GaN分布式Bragg反射器增强纳米多孔GaN基MQWs/TiO2的光催化性能","authors":"He Wang, Dezhong Cao*, Yuxuan Diwu, Wangxin Gao, Hu Zhou, Feifei Wang, Tongle Guan, Tiantian Luo, Li Ma, Sen Wang, Zhengquan Guo, Mengqi Tian, Qinglong Fang, Dingze Lu, Ningning Feng, Lianbi Li, Caijuan Xia, Xiaohua Ma and Yue Hao, ","doi":"10.1021/acs.cgd.4c0175810.1021/acs.cgd.4c01758","DOIUrl":null,"url":null,"abstract":"<p >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 TiO<sub>2</sub> thin films via pulsed laser deposition (PLD). Electrochemical tests present that nanoporous heterojunction structures of NP-MQWs-based TiO<sub>2</sub> (NP-MQWs/TiO<sub>2</sub>) increase the separation and transfer efficiency of the photogenerated charge. Compared with as-grown MQWs-based TiO<sub>2</sub> (AG-MQWs/TiO<sub>2</sub>), NP-MQWs/TiO<sub>2</sub> 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 TiO<sub>2</sub> layer. Moreover, the photocatalytic mechanism of NP-MQWs/TiO<sub>2</sub> is revealed.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"25 9","pages":"2939–2946 2939–2946"},"PeriodicalIF":3.4000,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Increased Photocatalytic Properties of Nanoporous GaN-Based MQWs/TiO2 with Nanoporous GaN Distributed Bragg Reflectors\",\"authors\":\"He Wang, Dezhong Cao*, Yuxuan Diwu, Wangxin Gao, Hu Zhou, Feifei Wang, Tongle Guan, Tiantian Luo, Li Ma, Sen Wang, Zhengquan Guo, Mengqi Tian, Qinglong Fang, Dingze Lu, Ningning Feng, Lianbi Li, Caijuan Xia, Xiaohua Ma and Yue Hao, \",\"doi\":\"10.1021/acs.cgd.4c0175810.1021/acs.cgd.4c01758\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >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 TiO<sub>2</sub> thin films via pulsed laser deposition (PLD). Electrochemical tests present that nanoporous heterojunction structures of NP-MQWs-based TiO<sub>2</sub> (NP-MQWs/TiO<sub>2</sub>) increase the separation and transfer efficiency of the photogenerated charge. Compared with as-grown MQWs-based TiO<sub>2</sub> (AG-MQWs/TiO<sub>2</sub>), NP-MQWs/TiO<sub>2</sub> 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 TiO<sub>2</sub> layer. Moreover, the photocatalytic mechanism of NP-MQWs/TiO<sub>2</sub> is revealed.</p>\",\"PeriodicalId\":34,\"journal\":{\"name\":\"Crystal Growth & Design\",\"volume\":\"25 9\",\"pages\":\"2939–2946 2939–2946\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2025-04-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Crystal Growth & Design\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.cgd.4c01758\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystal Growth & Design","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.cgd.4c01758","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Increased Photocatalytic Properties of Nanoporous GaN-Based MQWs/TiO2 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.
期刊介绍：
The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials.
Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.
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