{"title":"镱对钛酸钾光催化降解酸性红的影响","authors":"Shuai Zhang, Wenjie Zhang, Zhao Lv","doi":"10.1007/s11144-024-02750-7","DOIUrl":null,"url":null,"abstract":"<div><p>A sol–gel method was used to prepare Yb<sub>n</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> to show ytterbium’s effects on potassium titanate’s properties. The crystallite sizes of monoclinic K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> phase for K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were calculated to be 25.5, 44.9 and 41.1 nm. The specific surface area and pore volume of K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were small, and Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> had the largest specific surface area (9.10 m<sup>2</sup>/g) and pore volume (0.0193 cm<sup>3</sup>/g). The photoluminescence intensity reduced in the sequence: K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>. The photocatalytic activities of Yb<sub>n</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were much better than that of K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, and the degradation efficiencies in 80 min for Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were determined to be 89.6%, 69.9% and 56.3%. The 600 mg/L dosage of Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> was suitable for the photocatalytic reaction.</p></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"138 2","pages":"1055 - 1066"},"PeriodicalIF":1.7000,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of ytterbium on potassium titanate for enhanced photocatalytic degradation of Acid red 1\",\"authors\":\"Shuai Zhang, Wenjie Zhang, Zhao Lv\",\"doi\":\"10.1007/s11144-024-02750-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A sol–gel method was used to prepare Yb<sub>n</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> to show ytterbium’s effects on potassium titanate’s properties. The crystallite sizes of monoclinic K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> phase for K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were calculated to be 25.5, 44.9 and 41.1 nm. The specific surface area and pore volume of K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were small, and Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> had the largest specific surface area (9.10 m<sup>2</sup>/g) and pore volume (0.0193 cm<sup>3</sup>/g). The photoluminescence intensity reduced in the sequence: K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>. The photocatalytic activities of Yb<sub>n</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were much better than that of K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, and the degradation efficiencies in 80 min for Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub>, Yb<sub>0.3</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> and K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> were determined to be 89.6%, 69.9% and 56.3%. The 600 mg/L dosage of Yb<sub>0.15</sub>-K<sub>2</sub>Ti<sub>6</sub>O<sub>13</sub> was suitable for the photocatalytic reaction.</p></div>\",\"PeriodicalId\":750,\"journal\":{\"name\":\"Reaction Kinetics, Mechanisms and Catalysis\",\"volume\":\"138 2\",\"pages\":\"1055 - 1066\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-10-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reaction Kinetics, Mechanisms and Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11144-024-02750-7\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-024-02750-7","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effects of ytterbium on potassium titanate for enhanced photocatalytic degradation of Acid red 1
A sol–gel method was used to prepare Ybn-K2Ti6O13 to show ytterbium’s effects on potassium titanate’s properties. The crystallite sizes of monoclinic K2Ti6O13 phase for K2Ti6O13, Yb0.15-K2Ti6O13 and Yb0.3-K2Ti6O13 were calculated to be 25.5, 44.9 and 41.1 nm. The specific surface area and pore volume of K2Ti6O13 were small, and Yb0.15-K2Ti6O13 had the largest specific surface area (9.10 m2/g) and pore volume (0.0193 cm3/g). The photoluminescence intensity reduced in the sequence: K2Ti6O13, Yb0.3-K2Ti6O13 and Yb0.15-K2Ti6O13. The photocatalytic activities of Ybn-K2Ti6O13 were much better than that of K2Ti6O13, and the degradation efficiencies in 80 min for Yb0.15-K2Ti6O13, Yb0.3-K2Ti6O13 and K2Ti6O13 were determined to be 89.6%, 69.9% and 56.3%. The 600 mg/L dosage of Yb0.15-K2Ti6O13 was suitable for the photocatalytic reaction.
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
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