Au和Ag修饰TNTAs阵列及光电催化甘油转化研究
O646%O649; 通过阳极氧化法制备TiO2纳米管阵列(TNTAs),管径是60 nm和管长是5.4 μm.进一步利用电沉积法制备了 Au和Ag修饰的TNTAs/Au和TNTAs/Ag纳米管阵列.评价了负载不同Au和Ag含量对光阳极光电催化转化甘油耦合产氢耦合的影响.结果表明,负载Au和Ag的TNTAs可将甘油光电催化转化为甘油醛(GLD)、二羟基丙酮(DHA)等高附加值产品并协同产氢.TNTAs/Au(0.08 mmol/L)和TNTAs/Ag(0.04 mmol/L)的催化性能最高,其产氢速率分别为213.8,198.1 μmol·cm-2·h-1,甘油转化率为4.6％、4.4％,DH...
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| Published in | 功能材料 Vol. 54; no. 8; pp. 8035 - 8117 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
山西省分析科学研究院,太原030006
30.08.2023
太原理工大学化学工程与技术学院,太原030024%太原理工大学材料科学与工程学院,太原030024%太原理工大学材料科学与工程学院,太原030024 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-9731 |
| DOI | 10.3969/j.issn.1001-9731.2023.08.005 |
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| Abstract | O646%O649; 通过阳极氧化法制备TiO2纳米管阵列(TNTAs),管径是60 nm和管长是5.4 μm.进一步利用电沉积法制备了 Au和Ag修饰的TNTAs/Au和TNTAs/Ag纳米管阵列.评价了负载不同Au和Ag含量对光阳极光电催化转化甘油耦合产氢耦合的影响.结果表明,负载Au和Ag的TNTAs可将甘油光电催化转化为甘油醛(GLD)、二羟基丙酮(DHA)等高附加值产品并协同产氢.TNTAs/Au(0.08 mmol/L)和TNTAs/Ag(0.04 mmol/L)的催化性能最高,其产氢速率分别为213.8,198.1 μmol·cm-2·h-1,甘油转化率为4.6％、4.4％,DHA的选择性为15.4％、15.3％.样品的最佳性能归功于金属纳米颗粒的等离子共振效应,即金属作为电子陷阱有效地聚集了光激发的电子,TiO2导带中的电子被转移到金属上,防止了光生电子-空穴对的复合,有效地提高了TiO2纳米管阵列的催化性能. |
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| AbstractList | O646%O649; 通过阳极氧化法制备TiO2纳米管阵列(TNTAs),管径是60 nm和管长是5.4 μm.进一步利用电沉积法制备了 Au和Ag修饰的TNTAs/Au和TNTAs/Ag纳米管阵列.评价了负载不同Au和Ag含量对光阳极光电催化转化甘油耦合产氢耦合的影响.结果表明,负载Au和Ag的TNTAs可将甘油光电催化转化为甘油醛(GLD)、二羟基丙酮(DHA)等高附加值产品并协同产氢.TNTAs/Au(0.08 mmol/L)和TNTAs/Ag(0.04 mmol/L)的催化性能最高,其产氢速率分别为213.8,198.1 μmol·cm-2·h-1,甘油转化率为4.6％、4.4％,DHA的选择性为15.4％、15.3％.样品的最佳性能归功于金属纳米颗粒的等离子共振效应,即金属作为电子陷阱有效地聚集了光激发的电子,TiO2导带中的电子被转移到金属上,防止了光生电子-空穴对的复合,有效地提高了TiO2纳米管阵列的催化性能. |
| Author | 王剑 田入峰 王旭东 张王刚 刘一鸣 李晓红 |
| AuthorAffiliation | 太原理工大学化学工程与技术学院,太原030024%太原理工大学材料科学与工程学院,太原030024%太原理工大学材料科学与工程学院,太原030024;山西省分析科学研究院,太原030006 |
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| Author_FL | ZHANG Wanggang WANG Xudong WANG Jian LIU Yiming TIAN Rufeng LI Xiaohong |
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| Keywords | 产氢 photoelectrochemistry TiO2纳米管阵列 光电化学 TiO2 nanotube arrays Au和Ag助催化剂 hydrogen production Au and Ag co-catalysts glycerol 甘油 |
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