Conductometric NO2 gas sensor based on Co-incorporated MoS2 nanosheets for room temperature applications

Recent advances in MoS2-based nanomaterial sensors for room-temperature gas detection: a review

“…Zn, W, Nb, Fe, Co, Ni, Cu, Ti, V, Ta, Al, and Ga 45,[53][54][55][56][57][58] , and nonmetal dopants includ N, Si, B, N, P, Cl [59][60][61] . However, most of the doping strategies focus on the theoretical calculations based on density functional theory (DFT) [62][63][64][65] , the theoretical results reveal that the doped-MoS 2 sensors perform higher adsorption energy, stronger noncovalent interaction, more carrier transport number, and faster conductivity rate to target gases 60,62,63 .…”

“…In this process, the binding energy will be greatly enhanced and defects will be formed to become new active sites, and the electrical properties will also be changed due to the decrease in the electron-hole recombination rate. 52 The doped elements can be divided into metal and nonmetal, where the metal dopants include Zn, W, Nb, Fe, Co, Ni, Cu, Ti, V, Ta, Al, and Ga, 45,[53][54][55][56][57][58] and nonmetal dopants include N, Si, B, N, P, and Cl. [59][60][61] However, most doping strategies focus on theoretical calculations based on density functional theory (DFT), [62][63][64][65] where theoretical results reveal that doped-MoS 2 sensors exhibit a higher adsorption energy, stronger noncovalent interaction, greater carrier transport number, and faster conductivity rate to target gases.…”

Recyclable ferroferric oxide@titanium dioxide@molybdenum disulfide with enhanced enzyme-like activity under visible light for effectively inhibiting the growth of drug-resistant bacteria in sewage

“…1h, the binding energies of Mo 3d 5/2 and Mo 3d 3/2 in MoS 2 are located at 229.62 eV, 228.78 eV, and 232.69 eV, 231.9 eV, respectively. 45–48 The binding energies of Mo 3d 5/2 and Mo 3d 3/2 in Fe 3 O 4 @TiO 2 @MoS 2 move to 230.2 eV, 228.9 eV, and 233.3 eV, 232.1 eV. 49,50 Fe 3 O 4 @TiO 2 @MoS 2 shows a new peak in the Mo 3d spectrum at 236 eV, which may be related to the Mo–O–Fe bond formation.…”

A Review of Transition Metal Dichalcogenides-Based Biosensors

“…Among the non-covalent interactions, hydrophobic interaction, van der Waals force, and hydrogen bonding are well studied ( Kumar et al, 2021 ). For example, TMDCs can directly adsorb antibodies via hydrophobic interaction ( Das et al, 2020 ) and single-stranded DNA molecules ( Kumar et al, 2022 ), gas molecules ( Bharathi et al, 2022 ), and silane coupling agent through van der Waals force. TMDCs can also be linked with surfactants ( Jung et al, 2018 ; Parra-Alfambra et al, 2018 ) such as dextran through hydrogen bonding, enabling simultaneous exfoliation and surface functionalization of multilayer nanosheets.…”