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dc.contributor.authorChen, Mingmingen_US
dc.contributor.authorDu, Bowenen_US
dc.contributor.authorWang, Qianen_US
dc.contributor.authorZhang, Jiaxinen_US
dc.contributor.authorZhu, Xiajunen_US
dc.contributor.authorLin, Zhengyuen_US
dc.contributor.authorDong, Yongqiangen_US
dc.contributor.authorFu, FengFuen_US
dc.contributor.authorYu, Tingen_US
dc.identifier.citationChen, M., Du, B., Wang, Q., Zhang, J., Zhu, X., Lin, Z., Dong, Y., Fu, F. & Yu, T. (2021). Tuning the aggregation of silver nanoparticles with carbon dots for the surface-enhanced Raman scattering application. Carbon, 185, 442-448.
dc.description.abstractSingle-layer carbon dots (CDs) are used as capping agents to synthesize silver nanoparticles (AgNPs). The obtained nanohybrids (AgNPs/CDs) can be self-assembled into nanostructures like nanochains (1D-AgNPs/CDs), nanoflats (2D-AgNPs/CDs) or nanobodys (3D-AgNPs/CDs) by simply tuning the amount of added CDs. It is found that CDs play a key role in controlling the aggregation AgNPs/CDs. The formation mechanisms of the AgNPs/CDs aggregates have been discussed. On the basis, the effects of aggregation dimension on the surface plasmon absorption and surface enhanced Raman spectroscopy (SERS) activity of AgNPs/CDs are investigated and discussed. It is found that the aggregation of AgNPs/CDs creates strong localized surface plasmon resonance. Furthermore, the aggregated AgNPs/CDs of different dimension have similar absorption intensity in the range from 500 to 800 nm, which is most commonly used in the surface enhanced Raman spectroscopy (SERS) measurement. The outstanding local electromagnetic field of the aggregated AgNPs and the enrichment effect of the CDs towards the analytes make all the obtained materials to be SERS substrates. In particular, 2D-AgNPs/CDs exhibit an ultrahigh enhancement factor of 4.02 × 1014 and a good reproducibility during the SERS test, using crystal violet as the model target molecule. The applicability of 2D-AgNPs/CDs in SERS detection is further confirmed by the measurement of trace thiram residual in apple.en_US
dc.rights© 2021 Elsevier Ltd. All rights reserved.en_US
dc.titleTuning the aggregation of silver nanoparticles with carbon dots for the surface-enhanced Raman scattering applicationen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.subject.keywordsSilver Nanoparticlesen_US
dc.subject.keywordsCarbon Dotsen_US
dc.description.acknowledgementThis study was financially supported by the National Natural Science Foundation of China (21675026, 21976029), the Natural Science Foundation of Fujian Province (2020Y0074), National Key Research and Development Program of China (2017YFC1600500), and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT1116).en_US
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