Atomic layer deposition-developed two-dimensional α-MoO3 windows excellent hydrogen peroxide electrochemical sensing capabilities

Nanoscale Au-ZnO Heterostructure Developed by Atomic Layer Deposition Towards Amperometric H2O2 Detection

“…f Unit cell of wurtzite ZnO with red-O and blue-ZnO atoms (panel a). Atomic arrangement and (0001), and (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) lattice planes B, C and D, respectively. The outline of the unit cell is shown as a black line.…”

“…Reprinted from ref. [30] with permission from Elsevier Science nanostructures the (10-10), (11)(12)(13)(14)(15)(16)(17)(18)(19)(20), and (0001) planes are repeating the unit cell in the appropriate directions. In this case, wurtzite crystal structure of ZnO from orthorhombic unit cell is obtained [47], as schematically presented in Fig.…”

“…In this regard, state-of-the-art nanoscale interfacing and molecular engineering of the sensing electrode materials can open up completely new possibilities by providing ultra-thin channels for key doping, minimization of the density of interfacial impurities and optimization of sensing capabilities of the devices [9]. Several recent reports about ALD-developed wafer-scaled monolayers of WO 3 [8,10,11] and TiO 2 [12,13] and few-layered MoO 3 [14,15], TiO 2 [16], and their heterojunctions including Au-WO 3 -TiO 2 [17], Ga 2 O 3 -WO 3 [18], Au-Ga 2 O 3 -TiO 2 [19], etc. are recent consecutive evidence of the impact of this technology on the extension of capabilities of materials for electrochemical [14], optical [20], and photovoltaic devices [17].…”

“…Several recent reports about ALD-developed wafer-scaled monolayers of WO 3 [8,10,11] and TiO 2 [12,13] and few-layered MoO 3 [14,15], TiO 2 [16], and their heterojunctions including Au-WO 3 -TiO 2 [17], Ga 2 O 3 -WO 3 [18], Au-Ga 2 O 3 -TiO 2 [19], etc. are recent consecutive evidence of the impact of this technology on the extension of capabilities of materials for electrochemical [14], optical [20], and photovoltaic devices [17]. H 2 O 2 possesses strong oxidizing and reducing properties and has been extensively used in various applications including different chemical, pharmaceutical and mining, textile, and clinic industries [21].…”

Porous Molybdenum Carbide Nanostructured Catalyst toward Highly Sensitive Biomimetic Sensing of H2O2

“…The toxicity of H 2 O 2 is low, but its overexpression can cause irreversible damage of nucleic acid, unsaturated fatty acid, lipid peroxidation of cell membrane and other harmful biological processes. Excessive H 2 O 2 may also lead to aging and some fatal diseases, including myocardial infarct, cardiovascular diseases, Parkinson's disease, cancers and Alzheimer's disease . It is also employed in chemical synthesis, fuel cells, foods, pharmaceutical and environmental fields, etc.…”