{"title":"通过在花状 MoS2 纳米材料上负载镍络合物提高光催化产生 H2 的活性","authors":"Arul Pundi , Zheng-Ting Tsai , Jemkun Chen , Yuan-Hsiang Yu , Chi-Jung Chang","doi":"10.1016/j.jtice.2024.105530","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Exploring efficient H<sub>2</sub>-production photocatalysts is very important for converting solar energy to chemical energy. Some approaches were developed to prevent the recombination of photogenerated electron-hole pairs, ultimately enhancing the photocatalytic H<sub>2</sub> production activity.</p></div><div><h3>Methods</h3><p>3D flower-like MoS<sub>2</sub> nanomaterials were surface-modified by the Ni complex as the redox mediator to make the composite photocatalysts. This work investigated the effect of zeta potential on the Ni-complex loading, charge separation, and photocatalytic H<sub>2</sub> production activity of MoS<sub>2</sub>.</p></div><div><h3>Significant findings</h3><p>The Ni-complex with central cation can be loaded on MoS<sub>2</sub> with negative zeta potential due to the columb attraction force. The photogenerated carriers can transfer from MoS<sub>2</sub> to the central Ni ion of the complex due to the ligands-stabilized multiple oxidation states of Ni, leading to suppressed charge recombination. The FE-TEM mapping and XPS confirm the loading of Ni complex. The photoluminescence, photocurrent response, and EIS tests confirm the improved photoinduced charge separation of the Ni complex-modified photocatalyst. The flower-like microstructure of MoS<sub>2</sub> provides a large specific surface area and high light absorption. The H<sub>2</sub> production activity of MoS<sub>2</sub>-Ni complex photocatalyst (3320 μmol g<sup>−1 h<sup>−1</sup></sup>) is higher than that of the pristine MoS<sub>2</sub> photocatalyst (2576 μmol g<sup>−1 h<sup>−1</sup></sup>).</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":5.5000,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced photocatalytic H2 production activity by loading Ni complex on flower-like MoS2 nanomaterials\",\"authors\":\"Arul Pundi , Zheng-Ting Tsai , Jemkun Chen , Yuan-Hsiang Yu , Chi-Jung Chang\",\"doi\":\"10.1016/j.jtice.2024.105530\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>Exploring efficient H<sub>2</sub>-production photocatalysts is very important for converting solar energy to chemical energy. Some approaches were developed to prevent the recombination of photogenerated electron-hole pairs, ultimately enhancing the photocatalytic H<sub>2</sub> production activity.</p></div><div><h3>Methods</h3><p>3D flower-like MoS<sub>2</sub> nanomaterials were surface-modified by the Ni complex as the redox mediator to make the composite photocatalysts. This work investigated the effect of zeta potential on the Ni-complex loading, charge separation, and photocatalytic H<sub>2</sub> production activity of MoS<sub>2</sub>.</p></div><div><h3>Significant findings</h3><p>The Ni-complex with central cation can be loaded on MoS<sub>2</sub> with negative zeta potential due to the columb attraction force. The photogenerated carriers can transfer from MoS<sub>2</sub> to the central Ni ion of the complex due to the ligands-stabilized multiple oxidation states of Ni, leading to suppressed charge recombination. The FE-TEM mapping and XPS confirm the loading of Ni complex. The photoluminescence, photocurrent response, and EIS tests confirm the improved photoinduced charge separation of the Ni complex-modified photocatalyst. The flower-like microstructure of MoS<sub>2</sub> provides a large specific surface area and high light absorption. The H<sub>2</sub> production activity of MoS<sub>2</sub>-Ni complex photocatalyst (3320 μmol g<sup>−1 h<sup>−1</sup></sup>) is higher than that of the pristine MoS<sub>2</sub> photocatalyst (2576 μmol g<sup>−1 h<sup>−1</sup></sup>).</p></div>\",\"PeriodicalId\":381,\"journal\":{\"name\":\"Journal of the Taiwan Institute of Chemical Engineers\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-05-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Taiwan Institute of Chemical Engineers\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1876107024001883\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Taiwan Institute of Chemical Engineers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1876107024001883","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
背景探索高效的产生 H2 的光催化剂对于将太阳能转化为化学能非常重要。方法用镍络合物作为氧化还原介质对三维花状 MoS2 纳米材料进行表面修饰,制成复合光催化剂。本研究探讨了Zeta电位对MoS2的镍络合物负载、电荷分离和光催化产H2活性的影响。重要发现:中心阳离子的镍络合物可以负载在负Zeta电位的MoS2上。由于配体稳定了 Ni 的多重氧化态,光生载流子可以从 MoS2 转移到络合物的中心 Ni 离子上,从而抑制了电荷重组。FE-TEM 图谱和 XPS 证实了 Ni 复合物的负载。光致发光、光电流响应和 EIS 测试证实,镍络合物修饰的光催化剂改善了光诱导电荷分离。MoS2 的花状微观结构具有较大的比表面积和较高的光吸收能力。MoS2-Ni 复合物光催化剂的 H2 生成活性(3320 μmol g-1 h-1)高于原始 MoS2 光催化剂(2576 μmol g-1 h-1)。
Enhanced photocatalytic H2 production activity by loading Ni complex on flower-like MoS2 nanomaterials
Background
Exploring efficient H2-production photocatalysts is very important for converting solar energy to chemical energy. Some approaches were developed to prevent the recombination of photogenerated electron-hole pairs, ultimately enhancing the photocatalytic H2 production activity.
Methods
3D flower-like MoS2 nanomaterials were surface-modified by the Ni complex as the redox mediator to make the composite photocatalysts. This work investigated the effect of zeta potential on the Ni-complex loading, charge separation, and photocatalytic H2 production activity of MoS2.
Significant findings
The Ni-complex with central cation can be loaded on MoS2 with negative zeta potential due to the columb attraction force. The photogenerated carriers can transfer from MoS2 to the central Ni ion of the complex due to the ligands-stabilized multiple oxidation states of Ni, leading to suppressed charge recombination. The FE-TEM mapping and XPS confirm the loading of Ni complex. The photoluminescence, photocurrent response, and EIS tests confirm the improved photoinduced charge separation of the Ni complex-modified photocatalyst. The flower-like microstructure of MoS2 provides a large specific surface area and high light absorption. The H2 production activity of MoS2-Ni complex photocatalyst (3320 μmol g−1 h−1) is higher than that of the pristine MoS2 photocatalyst (2576 μmol g−1 h−1).
期刊介绍:
Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.