不同表面活性剂对β-ZnMoO_4形貌及其光催化性能的影响
|
摘要
通过改变表面活性剂的种类利用水热法成功制备不同形貌的β-Zn MoO4材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)和紫外-分光光度计(UV-Vis)对样品的晶相、形貌和光吸收进行测试。通过样品对亚甲蓝废水的吸附及光降解效果来考察其性能。重点研究不同表面活性剂对β-Zn MoO4材料的相结构、形貌、禁带宽度及光催化性能的影响。结果表明,表面活性剂可以降低材料尺寸,获得具有较好亚甲蓝吸附性能的棒状或花状β-ZnMoO4。采用十六烷基三甲基溴化铵(CTAB)能获得较小尺寸和增强光吸收能力的β-Zn MoO4,其对亚甲基蓝的光催化降解率可达94. 2%。
β-ZnMoO_4 materials with different morphologies were prepared by hydrothermal method via changing the kinds of surfactants. The phase,morphology and light absorption of these materials were characterized by XRD,SEM and UV-Vis. The effect of adsorption and photodegradation of methylene blue of the samples were also investigated. The influences of surfactants on the β-ZnMoO_4 materials phase structure,morphology,optical energy gap and photocatalytic performance were investigated. The results show that surfactants could make the materials sizes reduce,and could obtain rodlike or flower-like β-ZnMoO_4,which exhibited better adsorption properties for methylene blue. Using cetyltrimethyl ammonium bromide(CTAB) can promote the smaller size and enhanced light absorption capacity of β-ZnMoO_4,and the photocatalytic performance rate of methylene blue reached 94. 2%.
β-ZnMoO_4 materials with different morphologies were prepared by hydrothermal method via changing the kinds of surfactants. The phase,morphology and light absorption of these materials were characterized by XRD,SEM and UV-Vis. The effect of adsorption and photodegradation of methylene blue of the samples were also investigated. The influences of surfactants on the β-ZnMoO_4 materials phase structure,morphology,optical energy gap and photocatalytic performance were investigated. The results show that surfactants could make the materials sizes reduce,and could obtain rodlike or flower-like β-ZnMoO_4,which exhibited better adsorption properties for methylene blue. Using cetyltrimethyl ammonium bromide(CTAB) can promote the smaller size and enhanced light absorption capacity of β-ZnMoO_4,and the photocatalytic performance rate of methylene blue reached 94. 2%.
引文
[1] Keereeta Y,Thongtem T,Somchai Thongtem S. Characterization of Zn MoO4nanofibers synthesized by electrospinning calcination combinations[J]. Mater Lett,2012,68:265-268.
[2]吕伟,刘璇,吴莉莉,等.水热法制备形貌可控的ZnMoO4微晶及其光致发光性能[J].发光学报,2012,33(12):1283-1288.
[3] Jiang Y R,Lee W W,Chen K T. Hydrothermal synthesis ofβ-Zn MoO4crystals and their photocatalytic degradation of Victoria Blue R and phenol[J]. J Taiwan Ins Chem E,2014,45:207-218.
[4] Xue R,Hong W,Pan Z,et al. Enhanced electrochemical performance of Zn MoO4/reduced graphene oxide composites as anode materials for lithium-ion batteries[J]. Electrochimica Acta,2016,222:838-844.
[5] Ramezani M,Hosseinpour-Mashkani S M,Sobhani-Nasab A,et al. Synthesis,characterization,and morphological control of Zn MoO4nanostructures through precipitation method and its photocatalyst application[J]. J Mater SciMater El,2015,26(10):7588-7594.
[6] Peng C,Gao L,Yang S,et al. A general precipitation strategy for large-scale synthesis of molybdate nanostructures[J]. Chem Comm,2008(43):5601-5603.
[7] Cavalcante L S,Sczancoski J C,Li M S,et al.β-Zn MoO4microcrystals synthesized by the surfactant-assisted hydrothermal method:growth process and photoluminescence properties[J]. Colloids Surfaces A,2012,396:346-351.
[8] Chen C C,Jiang Y R,Chang K H. The hydrothermal synthesis ofβ-Zn MoO4for UV or visible-light-responsive photocatalytic dedradation of Victoria Blue R[J]Adv Mater Res,2012,557:761-766.
[9]王丽,赵辉. WO3/N-TiO2异质节可见光催化降解亚甲基蓝[J].工业水处理,2016,36(11):78-81.
[10] Keereeta Y,Thongtem T,Thongtem S. Effect of medium solvent ratios on morphologies and optical properties ofα-Zn MoO4,β-Zn MoO4and Zn MoO4·0. 8H2O crystals synthesized by microwave hydrothermal/solvothermal method[J]. Superlattice Microst,2014,69:253-264.
[2]吕伟,刘璇,吴莉莉,等.水热法制备形貌可控的ZnMoO4微晶及其光致发光性能[J].发光学报,2012,33(12):1283-1288.
[3] Jiang Y R,Lee W W,Chen K T. Hydrothermal synthesis ofβ-Zn MoO4crystals and their photocatalytic degradation of Victoria Blue R and phenol[J]. J Taiwan Ins Chem E,2014,45:207-218.
[4] Xue R,Hong W,Pan Z,et al. Enhanced electrochemical performance of Zn MoO4/reduced graphene oxide composites as anode materials for lithium-ion batteries[J]. Electrochimica Acta,2016,222:838-844.
[5] Ramezani M,Hosseinpour-Mashkani S M,Sobhani-Nasab A,et al. Synthesis,characterization,and morphological control of Zn MoO4nanostructures through precipitation method and its photocatalyst application[J]. J Mater SciMater El,2015,26(10):7588-7594.
[6] Peng C,Gao L,Yang S,et al. A general precipitation strategy for large-scale synthesis of molybdate nanostructures[J]. Chem Comm,2008(43):5601-5603.
[7] Cavalcante L S,Sczancoski J C,Li M S,et al.β-Zn MoO4microcrystals synthesized by the surfactant-assisted hydrothermal method:growth process and photoluminescence properties[J]. Colloids Surfaces A,2012,396:346-351.
[8] Chen C C,Jiang Y R,Chang K H. The hydrothermal synthesis ofβ-Zn MoO4for UV or visible-light-responsive photocatalytic dedradation of Victoria Blue R[J]Adv Mater Res,2012,557:761-766.
[9]王丽,赵辉. WO3/N-TiO2异质节可见光催化降解亚甲基蓝[J].工业水处理,2016,36(11):78-81.
[10] Keereeta Y,Thongtem T,Thongtem S. Effect of medium solvent ratios on morphologies and optical properties ofα-Zn MoO4,β-Zn MoO4and Zn MoO4·0. 8H2O crystals synthesized by microwave hydrothermal/solvothermal method[J]. Superlattice Microst,2014,69:253-264.