TY - JOUR
T1 - Photoactive Control of Surface-Enhanced Raman Scattering with Reduced Graphene Oxide in Gas Atmosphere
AU - Zhou, Lu
AU - Pusey-Nazzaro, Lauren
AU - Ren, Guanhua
AU - Chen, Ligang
AU - Liu, Liyuan
AU - Zhang, Wentao
AU - Yang, Li
AU - Zhou, Jun
AU - Han, Jiaguang
N1 - Funding Information:
This work was supported by the National Key Research and Development Program of China (with grant no. 2017YFA0701004), the National Science Foundation of China (grant nos. 62025504, 61875150, 61935015, and 61675104), the Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600). L.Y. was supported by the National Science Foundation (NSF) grant No. DMR-2124934. The DFT computation resources were provided by the Extreme Science and Engineering Discovery Environment (XSEDE), which was supported by National Science Foundation (NSF) grant No. ACI-1548562. We thank T. Jiang, C. Gu, Y. Ma, Y. Chen (Ningbo University), and C. Liu (Ludwig-Maximilians-Universität München) for discussions.
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/1/25
Y1 - 2022/1/25
N2 - Surface-enhanced Raman scattering (SERS) is an ultrahigh sensitive detection technique for a variety of research fields. Both electromagnetic and chemical enhancement mechanisms are generally considered to contribute simultaneously to SERS signals. However, it is difficult to actively control the enhancement of SERS signals after the substrate is fabricated, since tuning one or both of the aforementioned enhancement mechanisms remains an experimental challenge. Here, we propose a method for actively implementing the photoinduced modulation of SERS signals, which is that under UV irradiation, the Fermi level of graphene can be dynamically modulated due to the adsorption and desorption of gas molecules. The method is validated in gas atmospheres of O2, CO2, N2, and air and also demonstrate its generality by different analytes. In addition, the method was successfully applied to the trace detection of pesticides on fruit peels in air environment, which show its practical implications in sensing.
AB - Surface-enhanced Raman scattering (SERS) is an ultrahigh sensitive detection technique for a variety of research fields. Both electromagnetic and chemical enhancement mechanisms are generally considered to contribute simultaneously to SERS signals. However, it is difficult to actively control the enhancement of SERS signals after the substrate is fabricated, since tuning one or both of the aforementioned enhancement mechanisms remains an experimental challenge. Here, we propose a method for actively implementing the photoinduced modulation of SERS signals, which is that under UV irradiation, the Fermi level of graphene can be dynamically modulated due to the adsorption and desorption of gas molecules. The method is validated in gas atmospheres of O2, CO2, N2, and air and also demonstrate its generality by different analytes. In addition, the method was successfully applied to the trace detection of pesticides on fruit peels in air environment, which show its practical implications in sensing.
KW - adsorption
KW - desorption
KW - reduced graphene oxide
KW - surface-enhanced Raman scattering
KW - ultraviolet light irradiation
UR - https://www.scopus.com/pages/publications/85121919609
U2 - 10.1021/acsnano.1c07695
DO - 10.1021/acsnano.1c07695
M3 - Article
C2 - 34927434
AN - SCOPUS:85121919609
SN - 1936-0851
VL - 16
SP - 577
EP - 587
JO - ACS nano
JF - ACS nano
IS - 1
ER -