收稿日期: 2018-10-12
网络出版日期: 2020-12-29
基金资助
国家自然科学基金资助项目(21671128);国家自然科学基金资助项目(21671130);国家自然科学基金资助项目(41807304);国家自然科学基金资助项目(21805181);国家博士后科学基金资助项目(2017M611529)
Synthesis of Bi2WO6/TiO2 nanobelts for development of visible-light-driven photocatalysts and their photocatalytic properties
Received date: 2018-10-12
Online published: 2020-12-29
以 TiO2 P25纳米颗粒为原料, 通过碱-水热法制备TiO2纳米带,再采用水热法成功制备出Bi2WO6/TiO2纳米带材料.利用X射线衍射仪(X-ray diffraction, XRD)、扫描电子显微镜 (scanningelectron microscope, SEM)以及透射电子显微镜 (transmission electronmicroscope, TEM)分别对该材料的物相和形貌进行了分析,并研究了其在可见光下的光催化的性能和催化机理. 研究结果表明:制备出的Bi2WO6纳米带通过分子间作用力成功负载在TiO$_{2}$纳米带上.制备出的Bi2WO6/TiO2在可见光下具有优越的光催化性能,这归因于材料较好的光生电子-空穴分离效率以及材料特定的物理性质,不仅为光催化反应提供了丰富的活性位点, 还有效促进了电子的轴向迁移率.
关键词： Bi2WO6/TiO2纳米带; 分离效率; 物理性质; 活性位点
唐燕, 周荻雯, 朱影, 乔丹丹, 浦娴娟, 焦正, 程伶俐 . Bi2WO6/TiO2纳米带的制备及其可见光催化性能[J]. 上海大学学报(自然科学版), 2020 , 26(6) : 954 -962 . DOI: 10.12066/j.issn.1007-2861.2103
TiO2 P25 nanoparticles were used as raw materials to synthesise TiO2 nanobelts by the alkaline hydrothermal method. The Bi2WO6/TiO2 nanobelts were successfully synthesised by the hydrothermal method using the TiO2 nanobelts. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques were used to study the morphology and structure of the synthesised hybrid material. The experimental results revealed that the Bi2WO6 nanosheets could be successfully loaded onto the surface of the TiO2 nanobelts (attachment via intermolecular interactions). The photocatalytic performance of the Bi2WO6/TiO2 composite material and the mechanism of catalysis were investigated under visible light irradiation. The results showed that the prepared Bi2WO6/TiO2 hybrid material had excellent photocatalytic properties. The enhanced photocatalytic activity could be attributed to the excellent photogenerated electron-hole pair separation (effective charge separation) and specificity of the composite material. The effective charge separation not only generated abundant active sites for photocatalytic reactions but also effectively promoted the axial mobility of electrons.
| [1] | 贾志方. 新型可见光催化剂的制备及其光催化性能的研究[D]. 天津: 天津大学, 2011. |
| [2] | 宋海燕. 新型光催化材料的制备与催化性能研究[D]. 合肥: 中国科学技术大学, 2006. |
| [3] | Zhang X, Wang Y, Liu B, et al. Heterostructures construction on TiO$_{2}$ nanobelts: a powerful tool for building high-performance photocatalysts[J]. Applied Catalysis B: Environmental, 2017,202:620-641. |
| [4] | 田健. 基于一维二氧化钛纳米带表面异质结构的太阳光全波段(紫外, 可见与近红外)光催化性能研究[D]. 济南: 山东大学, 2014. |
| [5] | Guo Q, Huang Y, Xu H, et al. The effects of solvent on photocatalytic properties of Bi$_{2}$WO$_{6}$/TiO$_{2}$ heterojunction under visible light irradiation[J]. Solid State Sciences, 2018,78:95-106. |
| [6] | Meng X, Zhang Z. Bismuth-based photocatalytic semiconductors: introduction, challenges and possible approaches[J]. Journal of Molecular Catalysis A: Chemical, 2016,423:533-549. |
| [7] | Zhang L, Wang H, Chen Z, et al. Bi$_{2}$WO$_{6}$ micro/nano-structures: synjournal, modifications and visible-light-driven photocatalytic applications[J]. Applied Catalysis B: Environmental, 2011,106(1/2):1-13. |
| [8] | Di J, Xia J X, Ge Y P, et al. Novel visible-light-driven CQDs/Bi$_{2}$WO$_{6}$ hybrid materials with enhanced photocatalytic activity toward organic pollutants degradation and mechanisminsight[J]. Applied Catalysis B: Environmental, 2015,168:51-61. |
| [9] | Kong X Y, Tan W L, Ng B J, et al. Harnessing Vis-NIR broad spectrum for photocatalytic CO$_{2}$ reduction over carbon quantum dots-decorated ultrathin Bi$_{2}$WO$_{6}$ nanosheets[J]. Nano Research, 2017,10(5):1720-1731. |
| [10] | Qian X F, Yue D T, Tian Z Y, et al. Carbon quantum dots decorated Bi$_{2}$WO$_{6}$ nanocomposite with enhanced photocatalytic oxidation activity for VOCs[J]. Applied Catalysis B: Environmental, 2016,193:16-21. |
| [11] | Dong S, Ding X, Guo T, et al. Self-assembled hollow sphere shaped Bi$_{2}$WO$_{6}$/RGO composites for efficient sunlight-driven photocatalytic degradation of organic pollutants[J]. Chemical Engineering Journal, 2017,316:778-789. |
| [12] | Wang H, Liang Y H, Li L, et al. Reduced graphene oxide wrapped Bi$_{2}$WO$_{6}$ hybrid with ultrafast charge separation and improved photoelectrocatalytic performance[J]. Applied Surface Science, 2017,392:51-60. |
| [13] | Wang Y, Wang J, Shen H, et al. Synjournal of Ag$_{3}$PO$_{4}$/RGO/Bi$_{2}$WO$_{6}$ composites with highly efficient photocatalytic activity: efficient visible-light driven all-solid-state Z-scheme photocatalyst[J]. Nano, 2017,12:12. |
| [14] | Ge M, Li Y, Liu L, et al. Bi$_{2}$O$_{3}$-Bi$_{2}$WO$_{6}$ composite microspheres: hydrothermal synjournal and photocatalytic performances[J]. The Journal of Physical Chemistry C, 2011,115(13):5220-5225. |
| [15] | Wang H, Li S, Zhang L, et al. Surface decoration of Bi$_{2}$WO$_{6}$ superstructures with Bi$_{2}$O$_{3}$ nanoparticles: an efficient method to improve visible-light-driven photocatalytic activity[J]. Crystengcomm, 2013,15(44):9011. |
| [16] | Zhong S, Zhang F, Lu W, et al. One-step synjournal of Bi$_{2}$WO$_{6}$/Bi$_{2}$O$_{3}$ loaded reduced graphene oxide multicomponent composite with enhanced visible-light photocatalytic activity[J]. RSC Advances, 2015,5(84):68646-68654. |
| [17] | Gui M S, Zhang W D, Chang Y Q, et al. One-step hydrothermal preparation strategy for nanostructured WO$_{3}$/Bi$_{2}$WO$_{6}$ heterojunction with high visible light photocatalytic activity[J]. Chemical Engineering Journal, 2012,197:283-288. |
| [18] | Liu Z, Yu Q, Liu J, et al. Enhanced visible photocatalytic activity in flower-like CuO-WO$_{3}$-Bi$_{2}$WO$_{6}$ ternary hybrid through the cascadal electron transfer[J]. Micro and Nano Letters, 2017,12(3):195-200. |
| [19] | Liu L, Ding L, Liu Y, et al. Enhanced visible light photocatalytic activity by Cu$_{2}$O-coupled flower-like Bi$_{2}$WO$_{6}$ structures[J]. Applied Surface Science, 2016,364:505-515. |
| [20] | Liang Y H, Lin S L, Liu L, et al. Oil-in-water self-assembled Ag@AgCl QDs sensitized Bi$_{2}$WO$_{6}$: enhanced photocatalytic degradation under visible light irradiation[J]. Applied Catalysis B: Environmental, 2015,164:192-203. |
| [21] | Low J X, Yu J G, Li Q, et al. Enhanced visible-light photocatalytic activity of plasmonic Ag and graphene co-modified Bi$_{2}$WO$_{6}$ nanosheets[J]. Phys Chem Chem Phys, 2014,16(3):1111-1120. |
| [22] | Huang Y, Kang S, Yang Y, et al. Facile synjournal of Bi/Bi$_{2}$WO$_{6}$ nanocomposite with enhanced photocatalytic activity under visible light[J]. Applied Catalysis B: Environmental, 2016,196:89-99. |
| [23] | Lu S Y, Yu Y N, Bao S J, et al. In situ synjournal and excellent photocatalytic activity of tiny Bi decorated bismuth tungstate nanorods[J]. RSC Advances, 2015,5(104):85500-85505. |
| [24] | Wang J, Tang L, Zeng G, et al. Plasmonic Bi Metal deposition and g-C$_{3}$N$_{4}$ coating on Bi$_{2}$WO$_{6}$ microspheres for efficient visible-light photocatalysis[J]. ACS Sustainable Chemistry and Engineering, 2016,5(1):1062-1072. |
| [25] | Zhang X, Yu S, Liu Y, et al. Photoreduction of non-noble metal Bi on the surface of Bi$_{2}$WO$_{6}$ for enhanced visible light photocatalysis[J]. Applied Surface Science, 2017,396:652-658. |
| [26] | Zhang Z, Wang W, Wang L, et al. Enhancement of visible-light photocatalysis by coupling with narrow-band-gap semiconductor: a case study on Bi$_{2}$S$_{3}$/Bi$_{2}$WO$_{6}$[J]. ACS Applied Materials and Interfaces, 2012,4(2):593-597. |
| [27] | Issarapanacheewin S, Wetchakun K, Phanichphant S, et al. Photodegradation of organic dyes by CeO$_{2}$/Bi$_{2}$WO$_{6}$ nanocomposite and its physicochemical properties investigation[J]. Ceramics International, 2016,42(14):16007-16016. |
| [28] | Lü Z, Zhou H, Liu H, et al. Controlled assemble of oxygen vacant CeO$_{2}$@Bi$_{2}$WO$_{6}$ hollow magnetic microcapsule heterostructures for visible-light photocatalytic activity[J]. Chemical Engineering Journal, 2017,330:1297-1305. |
| [29] | Meng X, Li Z, Zeng H, et al. MoS$_{2}$ quantum dots-interspersed Bi$_{2}$WO$_{6}$ heterostructures for visible light-induced detoxification and disinfection[J]. Applied Catalysis B: Environmental, 2017,210:160-172. |
| [30] | Zhang J, Huang L H, Jin H Y, et al. Constructing two-dimension MoS$_{2}$/Bi$_{2}$WO$_{6}$ core-shell heterostructure as carriers transfer channel for enhancing photocatalytic activity[J]. Mater Res Bull, 2017,85:140-146. |
| [31] | Chen F, Li D, Luo B, et al. Two-dimensional heterojunction photocatalysts constructed by graphite-like C$_{3}$N$_{4}$ and Bi$_{2}$WO$_{6}$ nanosheets: enhanced photocatalytic activities for water purification[J]. Journal of Alloys and Compounds, 2017,694:193-200. |
| [32] | Jiang D, Ma W, Xiao P, et al. Enhanced photocatalytic activity of graphitic carbon nitride/carbon nanotube/Bi$_{2}$WO$_{6}$ ternary Z-scheme heterojunction with carbon nanotube as efficient electron mediator[J]. Journal of Colloid and Interface Science, 2018,512:693-700. |
| [33] | Chong B, Chen L, Wang W, et al. Visible-light-driven Ag-decorated g-C$_{3}$N$_{4}$ /Bi$_{2}$WO$_{6}$ Z-scheme composite for high photocatalytic activity[J]. Materials Letters, 2017,204:149-153. |
| [34] | Chen W, Liu T Y, Huang T, et al. In situ fabrication of novel Z-scheme Bi$_{2}$WO$_{6}$ quantum dots/g-C$_{3}$N$_{4}$ ultrathin nanosheets heterostructures with improved photocatalytic activity[J]. Applied Surface Science, 2015,355:379-387. |
| [35] | Chen G, Ji S, Sang Y, et al. Synjournal of scaly Sn$_{3}$O$_{4}$/TiO$_{2}$ nanobelt heterostructures for enhanced UV-visible light photocatalytic activity[J]. Nanoscale, 2015,7(7):3117-3125. |
| [36] | Hu X, Li Y, Tian J, et al. Highly efficient full solar spectrum (UV-vis-NIR) photocatalytic performance of Ag$_{2}$S quantum dot/TiO$_{2}$ nanobelt heterostructures[J]. Journal of Industrial and Engineering Chemistry, 2017,45:189-196. |
| [37] | Yang H, Tian J, Bo Y, et al. Visible photocatalytic and photoelectrochemical activities of TiO$_{2}$ nanobelts modified by In$_{2}$O$_{3}$ nanoparticles[J]. Journal of Colloid and Interface Science, 2017,487:258-265. |
| [38] | Tian J, Sang Y H, Yu G W, et al. A Bi$_{2}$WO$_{6}$-based hybrid photocatalyst with broad spectrum photocatalytic properties under UV, visible, and near-infrared irradiation[J]. Adv Mater, 2013,25(36):5075-5080. |
| [39] | Zhou W, Du G, Hu P, et al. Nanoheterostructures on TiO$_{2}$ nanobelts achieved by acid hydrothermal method with enhanced photocatalytic and gas sensitive performance[J]. Journal of Materials Chemistry, 2011,21(22):7937. |
| [40] | 桂明生. 钨酸铋基异质结型催化剂的制备及其光催化性能的研究[D]. 广州: 华南理工大学, 2012. |
| [41] | Li S, Hu S, Jiang W, et al. Facile synjournal of flower-like Ag$_{3}$VO$_{4}$/Bi$_{2}$WO$_{6 }$ heterojunction with enhanced visible-light photocatalytic activity[J]. Journal of Colloid and Interface Science, 2017,501:156-163. |
| [42] | 王蒙. 掺杂型Bi$_{2}$WO$_{6}$催化剂的制备及光催化性能的研究[D]. 西安: 西北大学, 2014. |
| [43] | Hou Y F, Liu S J, Zhang J H, et al. Facile hydrothermal synjournal of TiO$_{2}$-Bi$_{2}$WO$_{6}$ hollow superstructures with excellent photocatalysis and recycle properties[J]. Dalton Transactions, 2014,43(3):1025-1031. |
/
| 〈 |
|
〉 |
