KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| A Quantitative Bacteria Monitoring and Killing Platform Based on Electron Transfer from Bacteria to a Semiconductor | |
| Wang, GM; Tang, KW; Meng, ZY; Liu, P; Mo, S; Mehrjou, B; Wang, HY; Liu, XY; Wu, ZW; Chu, PK | |
| 2020-10-01 | |
| Source Publication | ADVANCED MATERIALS
 |
| ISSN | 0935-9648 |
| Issue | 39 |
| Subtype | Article |
| Abstract | A platform with both bacteria killing and sensing capabilities is crucial for monitoring the entire bacteria-related process on biomaterials and biomedical devices. Electron transfer (ET) between the bacteria and a Au-loaded semiconductor (ZnO) is observed to be the primary factor for effective bacteria sensing and fast bacteria killing. The electrons produce a saturation current that varies linearly with the bacteria number, semi-logarithmically, withR(2)of 0.98825, thus providing an excellent tool to count bacteria quantitatively in real-time. Furthermore, ET leads to continuous electron loss killing of about 80% ofEscherichia coliin only 1 h without light. The modularity and extendability of this ET-based platform are also demonstrated by the excellent results obtained from other semiconductor/substrate systems and the stability is confirmed by recycling tests. The underlying mechanism for the dual functions is not due to conventional attributed Zn(2+)leaching or photocatalysis but instead electrical interactions upon direct contact. The results reveal the capability of real-time detection of bacteria based on ET while providing information about the antibacterial behavior of ZnO-based materials especially in the early stage. The concept can be readily incorporated into the design of smart and miniaturized devices that can sense and kill bacteria simultaneously. |
| DOI | 10.1002/adma.202003616 |
| WOS Keyword | ANTIBACTERIAL ACTIVITY ; CELL-DEATH ; ZNO ; NANOPARTICLES ; GRAPHENE ; NANOMATERIALS ; BIOSENSORS ; MECHANISM ; SILVER ; LIGHT |
| Language | 英语 |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/27823 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Wang, GM,Tang, KW,Meng, ZY,et al. A Quantitative Bacteria Monitoring and Killing Platform Based on Electron Transfer from Bacteria to a Semiconductor[J]. ADVANCED MATERIALS,2020(39). |
| APA | Wang, GM.,Tang, KW.,Meng, ZY.,Liu, P.,Mo, S.,...&Chu, PK.(2020).A Quantitative Bacteria Monitoring and Killing Platform Based on Electron Transfer from Bacteria to a Semiconductor.ADVANCED MATERIALS(39). |
| MLA | Wang, GM,et al."A Quantitative Bacteria Monitoring and Killing Platform Based on Electron Transfer from Bacteria to a Semiconductor".ADVANCED MATERIALS .39(2020). |
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