SrTiO3-SrWO4的制备及其光催化性能研究
收稿日期: 2023-11-26
网络出版日期: 2024-08-01
基金资助
教育部“春晖计划”合作科研项目(2020703-8);国家留学基金委公派访学学者面上项目(CSC202008210025);辽宁省教育厅项目(LJKMZ20220736)
Study on preparation and photocatalytic performance of SrTiO3-SrWO4
Received date: 2023-11-26
Online published: 2024-08-01
以H1.07Ti1.73O4（HTO）为Ti源，八水合氢氧化锶［Sr（OH）2∙8H2O］为Sr源，水合钨酸铵固体［（NH4）10H2（W2O7）6∙xH2O］为W源，在180 ℃下采用一步水热法制备不同比例SrTiO3-SrWO4复合体，通过X射线衍射仪（XRD）、扫描电镜（SEM）、紫外-可见吸收光谱仪（UV-Vis）、X射线光电子能谱仪（XPS）等测试手段研究不同复合体的结构和表面形貌，同时以氙灯为光源降解10 mg/L亚甲基蓝（MB）溶液，探究不同复合样品的光催化降解性能。实验结果表明，利用水热法成功合成不同比例SrTiO3-SrWO4复合体。复合样STW-9的降解性能最好，降解速率常数为0.055 min-1，SrTiO3、SrWO4的降解速率常数分别为0.017、0.01 min-1，这说明两者之间所形成的Z型异质结提升了载流子的分离效率。同时复合样STW-9在重复使用5次后降解率仍然可达到82%。通过捕获剂实验可得反应活性物种催化效果由高到低依次为羟基自由基（∙OH）、光生空穴（h+）、超氧自由基（∙O2-）、光生电子（e-），从而证明羟基自由基（∙OH）为主要活性物种。SrTiO3-SrWO4复合材料能耗低，可为今后处理有机污染物提供借鉴。
王雅雯 , 王芳芳 , 耿司宇 , 鞠佳 , 陈雷 , 陈常东 . SrTiO3-SrWO4的制备及其光催化性能研究[J]. 无机盐工业, 2024 , 56(7) : 143 -149 . DOI: 10.19964/j.issn.1006-4990.2023-0562
Using H1.07Ti1.73O4（HTO） as Ti source，strontium hydroxide octahydrate Sr（OH）2∙8H2O as Sr source，and solid ammonium tungstate［（NH4）10H2（W2O7）6∙xH2O］ as W source，the SrTiO3-SrWO4 complex with different proportions were prepared by one⁃step hydrothermal method at 180 ℃.X-ray diffraction（XRD），scanning electron microscopy（SEM），ultraviolet visible absorption spectroscopy（UV-Vis），X-ray photoelectron spectroscopy（XPS） and other testing methods were used to study the structure and surface morphology of different complexes.At the same time，xenon lamp was used as the light source to degrade 10 mg/L methylene blue（MB） solution，and the photocatalytic degradation performance of different composite samples was investigated.According to the experimental results，the SrTiO3-SrWO4 complexes with different proportions were synthesized by hydrothermal method.When the composite sample was STW-9，the degradation performance was the best，and the degradation rate constant was 0.055 min-1.The degradation rate constants of SrTiO3 and SrWO4 were 0.017 min-1，0.01 min-1，respectively，which indicated that the Z-type heterojunction formed between them improved the carrier separation efficiency.At the same time，the degradation rate of composite STW-9 could still reach 82% after repeated use for 5 times.The catalytic effect of the reactive species was hydroxylradica（·OH）>photogenerated holes（h+）>superoxide radical（·O2-）>photogenerated electron（e-）.The hydroxylradical（∙OH） was proved to be the main active species.SrTiO3-SrWO4 composite material had low energy consumption and could provide reference for the treatment of organic pollutants in the future.
Key words： hydrothermal method; heterojunction; SrTiO3-SrWO4; photocatalysis
| 1 | GUO Bobo， GU Yufen.Preparation of an excellent Z-type SrWO4@Bi2WO6 heterojunction photocatalyst and its photocatalytic performance under simulated sunlight［J］.ChemistrySelect，2021，6（34）：9199-9210. |
| 2 | ILINOIU E C， PODE R， MANEA F，et al.Photocatalytic activity of a nitrogen?doped TiO2 modified zeolite in the degradation of reactive yellow 125 azo dye［J］.Journal of the Taiwan Institute of Chemical Engineers，2013，44（2）：270-278. |
| 3 | HUANG S T， LEE W W， CHANG Jialin，et al.Hydrothermal synthesis of SrTiO3 nanocubes：Characterization，photocatalytic activities，and degradation pathway［J］.Journal of the Taiwan Institute of Chemical Engineers，2014，45（4）：1927-1936. |
| 4 | YANG Liuxin， CHEN Zhou， ZHANG Jian，et al.SrTiO3/TiO2 heterostructure nanowires with enhanced electron?hole separation for efficient photocatalytic activity［J］.Frontiers of Materials Science，2019，13（4）：342-351. |
| 5 | 孙海杰，程圆，田源，等.BiOI/g-C3N4催化剂的制备及其光催化降解罗丹明B性能［J］.无机盐工业，2023，55（8）：36-44. |
| SUN Haijie， CHENG Yuan， TIAN Yuan，et al.Preparation of BiOI/g-C3N4 catalyst and its photocatalytic degradation performance of Rhodamine B［J］.Inorganic Chemicals Industry，2023，55（8）：36-44. | |
| 6 | 谭冲，王欢欢，李俊生，等.钨掺杂钛酸锶纳米粒子的合成及其光催化性能研究［J］.分子科学学报，2020，36（5）：391-397. |
| TAN Chong， WANG Huanhuan， LI Junsheng，et al.Synthesis and photocatalytic activity properties of tungsten doped SrTiO3 nano?particles［J］.Journal of Molecular Science，2020，36（5）：391-397. | |
| 7 | KIRAN K S， SHASHANKA R， LOKESH S V.Enhanced photocatalytic activity of hydrothermally synthesized perovskite strontium titanate nanocubes［J］.Topics in Catalysis，2022.Doi：10.1007/s11244-021-01558-2. |
| 8 | KIMIJIMA T， KANIE K， NAKAYA M，et al.Solvothermal synthesis of SrTiO3 nanoparticles precisely controlled in surface crystal planes and their photocatalytic activity［J］.Applied Catalysis B：Environmental，2014，144：462-467. |
| 9 | LI Junfang， BAI Hua， YI Wencai，et al.Synthesis and facet?dependent photocatalytic activity of strontium titanate polyhedron nanocrystals［J］.Nano Research，2016（5）：1523-1531. |
| 10 | HOSSAINIAN H， SALAVATI-NIASARI M， BAZARGANIPOUR M. |
| Photodegradation of organic dye using strontium tungstate spherical?like nanostructures；synthesis and characterization［J］.Journal of Molecular Liquids，2016，220：747-754. | |
| 11 | GUPTA S K， SUDARSHAN K， GHOSH P S，et al.Luminescence of undoped and Eu3+ doped nanocrystalline SrWO4 scheelite：Time resolved fluorescence complimented by DFT and positron annihilation spectroscopic studies ［J］.RSC Advances，2016，6（5）：3792-3805. |
| 12 | SRIDHAR C， SAHU N， SEO Y S，et al.Comparative electrochemical，photocatalytic，and photoluminescence studies in SrWO4 and rGO-SrWO4 nanocomposites［J］.Journal of Electronic Materials，2023，52（6）：3759-3773. |
| 13 | 黄曦瑶，李明春，郭银彤.g-C3N4/Bi/Bi2WO6光催化材料的协同改性研究［J］.无机盐工业，2022，54（12）：133-138. |
| HUANG Xiyao， LI Mingchun， GUO Yintong.Study on synergistic modification of g-C3N4/Bi/Bi2WO6 photocatalyst［J］.Inorganic Chemicals Industry，2022，54（12）：133-138. | |
| 14 | ZHENG Mingjie， CHEN Zhixing， Yongkun LUN，et al.Hybridization of SrTiO3 and strontium wolframates with very?high?potential photogenerated carriers for degrading the A-ring of tetracycli?ne［J］.Applied Surface Science，2021，570：151138. |
| 15 | CHEN Changdong， IKEUCHI Y， XU Linfeng，et al.Synthesis of［111］- and｛010｝-faceted anatase TiO2 nanocrystals from tri?titanate nanosheets and their photocatalytic and DSSC performances［J］.Nanoscale，2015，7（17）：7980-7991. |
| 16 | 常帅康，刘闯，李坤宸，等.介观TiO2晶体材料的拓扑转变合成及其性能［J］.辽宁石油化工大学学报，2023，43（1）：27-31. |
| CHANG Shuaikang， LIU Chuang， LI Kunchen，et al.Preparation of TiO2 mesocrystals by topochemical conversion and their performance［J］.Journal of Liaoning Petrochemical University，2023，43（1）：27-31. | |
| 17 | HUANG Min， ZHANG Shuyi， GAN Yongping，et al.Effective SrWO4/TiO2 heterojunction with enhanced carriers separation and transfer for photocatalytic methane oxidation［J］.Chemistry，2023，29（24）：e202204031. |
| 18 | WANG Fangfang， CHEN Changdong， WANG Wei，et al.Internal field engineering of WO3 by ion channel migration with enhanced photocatalytic oxygen evolution ability［J］.Journal of Materials Chemistry A，2021，9（3）：1678-1691. |
| 19 | YANG Zhaoming， KANG Minglang， CHEN Lei，et al.Interfacial engineering over tungsten oxide by constructing Z-scheme interatomic junction for efficient photocatalytic tetrachlorophenol degradation［J］.Applied Surface Science，2023，609：155306. |
| 20 | WANG Fangfang， YANG Zhaoming， YANG Zhanxu，et al.Graphene triggered hole activation strategy for 2D/2D-layered （001）/（100） WO3 facet junction towards enhanced photocatalytic water oxidation kinetics［J］.Chemical Engineering Journal，2022，450：138166. |
| 21 | 张若男，何仕婕，王晓蓉，等.BaTiO3-TiO2复合体的软化学制备及其性能研究［J］.石油化工高等学校学报，2022，35（4）：46-51. |
| ZHANG Ruonan， HE Shijie， WANG Xiaorong，et al.Study on soft chemistry preparation and performance of BaTiO3-TiO2 composites［J］.Journal of Petrochemical Universities，2022，35（4）：46-51. | |
| 22 | LEE Siaw Foon， Jimenez Relinque EVA， ISABEL Martinez，et al.Effects of Mott?Schottky frequency selection and other controlling factors on flat?band potential and band?edge position determination of TiO2 ［J］.Catalysts，2023，13（6）：1000. |
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