Facile one-pot microwave assisted synthesis of rGO-CuS-ZnS hybrid nanocomposite cathode catalysts for microbial fuel cell application

Reducing the resistance for the use of electrochemical impedance spectroscopy analysis in materials chemistry

“…Here, we review EIS techniques and highlight numerous practical applications within materials science, such as for analysis of self-assembled monolayers (SAMs), 9,17,18 supercapacitors, [19][20][21][22] dye-sensitized solar cells (DSSCs), 23,24 conductive coatings, [25][26][27] sensors, 28,29 porous electrodes for different applications, [30][31][32] and other "smart" materials. 7,33,34 Very recent exciting literature examples that applied EIS to characterize, optimize or fully understand the performance of the material include analysis of on-skin or wearable sensors, 35,36 "green" microbial fuel cells, 37 and biosensors of SARS-CoV-2 antibodies. 38,39 Notably, there are different methods to illustrate and analyze EIS measurements.…”

Effective Visible-Light-Driven Photocatalytic Degradation of Harmful Antibiotics Using Reduced Graphene Oxide-Zinc Sulfide-Copper Sulfide Nanocomposites as a Catalyst

“…The XRD graph of the rGO-ZCS NCs shows that the CuS (JCPDS No: 06–0464) nanoparticles exhibit several diffraction peaks at 26.43°, 31.47°, 34.28°, 36.05°, 61.36°, 62.71°, and 66.17°, which belong to the planes (101), (102), (103), (006), (110), (108), and (116), respectively. Moreover, the peaks at 26.43°, 56.47°, and 67.86° correspond to the planes (111), (220), and (311) of the ZnO nanorods (JCPDS No: 65–1691) . Thus, these peaks confirm the presence of ZnO nanorods and CuS nanoparticles on the rGO sheets with no other trace impurity peaks.…”

“…This study reveals that the prepared material is polycrystalline. ZnS and CuS are associated with bright spots, whereas the circles in the rGO nanosheets indicate the incorporation of the particles into the nanosheets of the prepared nanocomposites . Thus, the successful preparation of nanocomposites using the in situ microwave synthesis method was confirmed by the HR-TEM results.…”

“…The rGO-ZCS NC solution was centrifuged multiple times and washed using DI water and ethanol. The cleaned solid products were then dried overnight at 80 °C using a hot air oven to obtain the rGO-ZCS NCs …”

Recent Developments in Carbon-Based Nanocomposites for Fuel Cell Applications: A Review

“…Numerous methods have been used to develop carbon-supported nanocomposites, most notably sol-gel [19] microwave (MW) assisted [20], sonochemical [21], electrochemical [22], and hydrothermal (HT) [23]. Among them, the electrochemical technique is a promising one due to several merits, including shorter fabrication time, uniform and desired thickness of film deposition, and higher stability [24].…”