| 摘要: |
| 采用化学沉淀法制备了La-BiVO4光催化剂,并应用于光催化还原CO2/H2O体系中。通过TG-DTA、DRS、XRD对光催化剂进行表征,研究了焙烧温度等对光催化性能的影响。结果 表明,800 ℃煅烧制得的单斜相La-BiVO4活性最高。在催化剂用量0.8 g/L、反应时间8 h、CO2流量250 mL/min、反应温度70 ℃、反应液中NaOH和Na2SO3的浓度均为0.10 mol/L的条件下,甲醇产率高达290.18 μmol/g。 |
| 关键词: La-BiVO4 光催化 二氧化碳还原 甲醇 |
| DOI：10.3969/j.issn.1007-3426.2013.05.008 |
| 分类号: |
| 基金项目: |
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| Preparation of La-BiVO4 catalyst and its photocatalytic reduction property of CO2 |
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Wang Jianbo1, Xu Yanfeng1, Sun Yuan2
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(1.Department of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001,Anhui,China;2.Department of Biological and Chemical Engineering, Chien shiung Institute of Technology, Suzhou 215400,Jiangsu,China)
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| Abstract: |
| ZLa-BiVO4 photocatalyst was prepared by chemical precipitation method, and its photocatalytic reduction of CO2 in water was examined. The catalyst was characterized by TG-DTA, DRS and XRD technology, and the effect of roasting temperature and other conditions on the activity of photocatalytic reduction of CO2 were studied. The results showed that monoclinic phase La-BiVO4 calcined at 800 ℃ has the highest activity. When the amount of catalyst was 0.8 g/L, reaction time was 8 h, CO2 flow was 250 mL/min, the reaction temperature was 70 ℃, and the concentration of NaOH and Na2SO3 were both 0.10 mol/L, yield of methanol reached 290.18 μmol/g. |
| Key words: La-BiVO4 photocatalytic reduction of CO2 methanol |
