Surfaces and Interfaces
·
2024
·
IF 5.7
Xinrui Li,Deqi Fan,Chengxiao Zhao,Xiaofei Yang
Transition metal phosphorus trisulfides, namely sulfides composed of three elements, stand out within 2D nanomaterials due to the unique layered structure, distinctive bonding, and electronic configurations. However, the preparation of ultrathin nanosheets encounters significant challenges due to the inherent properties of the material itself and the complexity of the synthetic process. In this work, we successfully fabricated ultrathin FePS 3 nanoflakes with lateral dimensions of 500–800 nm and an average thickness of 5 nm utilizing mechanically assisted liquid-phase exfoliation in N-Methyl-2-pyrrolidone solution. The unique few-layer structure of FePS 3 may increase the number of active sites, facilitating the rapid separation and migration of photo-induced charge carriers. Consequently, this enhancement leads to an increase in photogenerated current and a substantial reduction in resistance. This study presents an effective approach for optimizing light absorption and charge separation processes of 2D nanostructure , thereby providing valuable insights for the rational design of efficient photocatalysts based on ultrathin FePS 3 nanosheet as a co-catalyst.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Chenguang Duan,Zongyu Huang,Hui Qiao,Qian Ma,Yang Zhou,Jianjin Teng,Xiang Qi
Metal phosphorus trichalcogenides, as a novel class of two-dimensional (2D) materials, attracted a lot of attention due to its antiferromagnetic ordering, excellent catalytic activity, and intrinsic electrical and optical properties. Herein, the FePS3 nanosheets exfoliated from the bulk counterpart by the sonication assisted liquid-phase exfoliation were applied in the photoelectrochemical-type (PEC) photodetector. The FePS3-based photoelectrode displays a short response time (rising time of 256 ms and decay time of 279 ms), large photocurrent density (3.2 μA cm–2), responsivity (31.94 μA cm–2 W–1), excellent long-term stability (more than 1000 s), and wide band detection (365–730 nm). Benefiting from the unique 2D structure of the FePS3 nanosheets and the flexibility of the PET substrate, the fabricated photoelectrode can maintain an outstanding photodetection performance after 500 cycles of bending and twisting. Furthermore, the PEC photodetector with a flexible sandwich structure was fabricated to make it more portable. This work promotes the application of 2D FePS3 nanosheets in optoelectronics and is of great significance to the practical application of the PEC device.
研究领域:
材料科学
·
光学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 4
·047514
·
IF 3.9
Wei Shan,Xiuyun Ma,Guobo Chen,Feicui Xu,Haizhou Zhao,Lei Dong,Xuefeng Yan,Zhaoshun Bi,Liangmin Yu,Meng Qiu
Electrochemical dopamine (DA) sensors become important for the early diagnosis of psychiatric disorders like schizophrenia and Parkinson's disease due to their fast response, simplicity, and portability. However, traditional electrode modification materials such as noble metals and metal oxides have shortcomings such as high cost, low conductivity, or limited catalytic performance. Two-dimensional sulfide materials contribute to the smooth electrode reaction because of their ultra-high specific superficial area and favorable electrocatalysis properties, however, their low carrier mobility and poor electroconductibility limit the detection signal. In this paper, Co-doped FePS3 nanosheets were employed for DA detection for the first time. Fe0.9Co0.1PS3 nanosheets exhibited a detection limit of 120 nM, a linear range 0.25–100 μM and 120–500 μM, and possessed high recovery and reproducible stability when applied to human serum samples. Furthermore, according to the in situ XPS characterization, S atoms located on the outmost layer of Fe0.9Co0.1PS3 nanosheets could be combined with the phenolic hydroxyl oxygen of DA, which makes electrode reaction from DA to dopamine quinone easier. Co-doping can further enhance the above effect, and increase the carrier mobility of FePS3 nanosheets. This work demonstrated electrochemical sensors based on metal phosphorus trisulfide materials have tremendous potential for future application in mental disorder diagnosis.
研究领域:
医学诊断
·
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 19
·期 8
·2204992
·
IF 15.153
Shiyang Lin,Mai Yang,Jiajie Chen,Wei Feng,Yu Chen,Yufang Zhu
As the emerging modalities for tumor therapy, sonodynamic therapy (SDT) and chemodynamic therapy (CDT) can generate reactive oxygen species (ROS), typically inducing tumor cell apoptosis. However, the construction of more efficient sonosensitizers integrated with excellent Fenton/Fenton-like catalytic activity to improve the synergistic therapeutic effect of SDT and CDT is still highly challenging. In this study, 2D semiconductor FePS 3 nanosheets (NSs), as one of the metal phosphorus trichalcogenides for both sonosensitizer and Fenton catalyst, are successfully synthesized via an ultrasonic-assisted liquid phase exfoliation method from bulk FePS 3 and further modified with lipoic acid-polyethylene glycol (LA-PEG) to obtain FePS 3 -PEG NSs with desirable biocompatibility. The in vitro and in vivo results demonstrate that the engineered FePS 3 -PEG NSs induce the combinatorial SDT/CDT effect attributing to the enhanced ROS generation and significant glutathione depletion, which can conduct highly efficient and safe tumor inhibition and prolong the life span of tumor-bearing mice. This work provides the paradigm of semiconductor FePS 3 NSs as the integrative sonosensitizer/Fenton nanocatalyst for dual nanodynamic tumor therapy, paving the new way for exploring other 2D metal phosphorus trichalcogenides in biomedicine.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）