期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 8, 期 14, 页码 4722-4731出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tc06984d
关键词
-
资金
- U.S. National Science Foundation [1831133, 1523617]
- NSF [1905833]
- DOE [FG02-08ER46531]
- State of North Carolina
- National Science Foundation [ECCS-1542015]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1905833] Funding Source: National Science Foundation
Transition metal carbides (MXenes) are an emerging family of highly conductive two-dimensional materials with additional functional properties introduced by surface terminations. Further modification of the surface terminations makes MXenes even more appealing for practical applications. Herein, we report a facile and environmentally benign synthesis of reduced Ti(3)C(2)Tx MXene (r-Ti(3)C(2)Tx) via a simple treatment with [-ascorbic acid at room temperature. r-Ti(3)C(2)Tx shows a six -fold increase in electrical conductivity, from 471 49 for regular Ti3C2Tx to 2819 306 S m-1 for the reduced version. Additionally, we show an enhanced oxidation stability of r-Ti(3)C(2)Tx as compared to regular Ti(3)C(2)Tx. An examination of the surface -enhanced Raman scattering (SERS) activity reveals that the SERS enhancement factor of r-Ti(3)C(2)Tx is an order of magnitude higher than that of regular Ti(3)C(2)Tx. The improved SERS activity of r-Ti(3)C(2)Tx is attributed to the charge transfer interaction between the MXene surface and probe molecules, re -enforced by an increased electronic density of states (DOS) at the Fermi level of r-Ti(3)C(2)Tx. The findings of this study suggest that reduced MXene could be a superior choice over regular MXene, especially for the applications that employ high electronic conductivity, such as electrode materials for batteries and supercapacitors, photodetectors, and SERS-based sensors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据