A novel ternary Ag-Cu2O/Ti3C2 heterostructure with high peroxidase-like activity for on-site colorimetric detection of galactose

Fabrication and characterization of Z-scheme BiOCl/C/Cu2O heterojunction nanocomposites as efficient catalysts for the photocatalytic reduction of CO2

“…and a small amount of 13 CH 4 (m/z = 17) are detected after 7 hours of reaction (Fig. 8), which agrees with the reduction products, indicating that CO and CH 4 in the reduction reaction are from the CO 2 instead of the decomposition of the carbon layer.…”

“…The whole reaction system was kept at 5 °C and continuously exposed to illumination for 7 h. Product analysis was performed using a gas chromatograph (SHIMADZU GC-2014C, Japan) to explore the constituents of the produced gas. Isotope labeling experiments using 13 CO 2 as the sole incoming gas were conducted to ascertain the provenience of carbon elements in the gaseous product, which was conducted using GC-MS-QP2010 (SHIMADZU, Japan). The apparent quantum yield (AQY) can be calculated using the following formula: 29 AQYð%Þ ¼ the number of reacted electrons the number of incident photons  100%…”

“…GC-MS (Gas chromatography-mass spectrometer) using 13 CO 2 (m/z = 45) as a carbon source was used to further detect the source of C in the reduction products. 40 13 CO (m/z = 29) Fig.…”

“…11 0D Cu 2 O nanomaterials have been widely utilized in photocatalytic pollutant degradation, hydrogen production, and CO 2 reduction. 12 Simultaneously, research on photocatalytic CO 2 reduction over Cu 2 O-based heterojunction has emerged endlessly, such as Cu 2 O/Ti 3 C 2 , 13 g-C 3 N 4 /Cu 2 O, 14 Cu 2 O/WO 3 , 15 and Cu 2 O/TiO 2 . 16 Through the construction of heterojunction, photogenerated electrons and holes are concentrated on the conduction band (CB) and valence band (VB) of different semiconductors to expedite the separation of photogenerated carriers.…”

Au/CeO2 NR Restricted Inside Cu-MOFs: A Three-in-One Artificial Enzyme with Synergistically Enhanced Peroxidase-Like Activity for Dual-Mode Sensing of Multiple Biomarkers

“…Nevertheless, as biological macromolecules, the practical applications are gravely hindered by their intrinsic drawbacks, such as multifarious preparation/purification processes, high extraction cost, strict storage conditions, and particularly the low stability in severe environments . As promising alternatives to natural enzymes, nanozymes, defined as nanomaterials with inherent enzyme-mimetic properties, have aroused significant interest due to their large-scale preparation potential, low cost, convenient storage, and strong stability under harsh environments. , So far, numerous nanomaterials, such as carbon-based nanomaterials (e.g., graphene, quantum dots, and carbon dots), − noble-metal-based nanomaterials (e.g., Pd, Pt, Au, and Ag), − and metal oxide-based nanomaterials (e.g., cobalt oxide, ferric oxide, manganese oxide, and ceria (CeO 2 )), ,− have been demonstrated to possess specific enzyme-mimetic catalytic activities.…”