Efficient Ag plus adsorption of in-vivo thiol-functionalized diatoms and its application for sensitive surface-enhanced Raman scattering
文献类型：期刊论文
| 作者 | Li, Mengyuan1,6; Liu, Dong6,7 ; Losic, Dusan2; Wang, Shun3; Tian, Qian4; Yu, Rongda1,6; Li, Haoyu1,6; Shen, Yuguo1,6; Zhong, Yin6; Yuan, Peng5,6
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2024 |
| 卷号 | 479页码:10 |
| 关键词 | Biosilica Living diatom In -vivo modification Thiol functionalization Ag plus adsorption Surface-enhanced Raman scattering |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2023.147751 |
| 英文摘要 | Diatom silica frustules are recognized as a valuable biomaterial with hierarchically porous silica structures and can be used for many applications. To obtain targeted functional diatom-based materials, many strategies have been explored, mainly focusing on diatomite (fossilized diatoms) but rarely on living diatom silica frustules. In this work, the frustules of living diatoms (T. weissflogii) were in-vivo functionalized with thiol (-SH) groups by using (3-mercaptopropyl) trimethoxysilane (MPTMS) as silicon source, through living biomineralization process. The -SH groups were homogeneously distributed in diatom biosilica structures, as revealed by FIB-TEM-EDS result. Two applications of thiol-functionalized frustules were demonstrated. The first was for Ag+ adsorption, showing significantly enhanced adsorption capacity (87.59 mg & sdot;g 1) compared with unmodified frustules (33.21 mg & sdot;g 1). The adsorption data and the spectroscopic and microscopic analyses revealed that the inner-sphere complexation of -SH with Ag+ was the primary mechanism. The second application showed that Ag+-loaded diatom frustules exhibited a significant surface-enhanced Raman scattering (SERS), which can be used for detecting methylene blue and rhodamine 6G. The charge transfer resonance between Ag2S and probe molecules makes the primary contribution to the distinct enhancement of Raman signals. These findings demonstrate that these in-vivo functionalized -SH groups on diatom silica frustules can still maintain their excellent chemical reactivities, suggesting that this modification strategy could be extended to modify living diatom silica frustules with other functional groups. This study is of great significance for developing functional materials from living diatoms and their applications in the fields of environmental remediation, biosensing, and drug delivery, etc. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001136922000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76054]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Liu, Dong; Wang, Shun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia 3.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China 4.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China 5.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 7.Guangdong Acad Sci, Inst Ecoenvironm & Soil Sci, Guangdong Prov Key Lab Integrated Agroenvironm Pol, Guangzhou 510650, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mengyuan,Liu, Dong,Losic, Dusan,et al. Efficient Ag plus adsorption of in-vivo thiol-functionalized diatoms and its application for sensitive surface-enhanced Raman scattering[J]. CHEMICAL ENGINEERING JOURNAL,2024,479:10. |
| APA | Li, Mengyuan.,Liu, Dong.,Losic, Dusan.,Wang, Shun.,Tian, Qian.,...&Yuan, Peng.(2024).Efficient Ag plus adsorption of in-vivo thiol-functionalized diatoms and its application for sensitive surface-enhanced Raman scattering.CHEMICAL ENGINEERING JOURNAL,479,10. |
| MLA | Li, Mengyuan,et al."Efficient Ag plus adsorption of in-vivo thiol-functionalized diatoms and its application for sensitive surface-enhanced Raman scattering".CHEMICAL ENGINEERING JOURNAL 479(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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