Engineering of CuO/ZrO2 nanocomposite-based electrochemical sensor for the selective detection of hydrogen peroxide

UiO-66-Derived PBA Composite as Multifunctional Electrochemical Non-Enzymatic Sensor Realizing High-Performance Detection of Hydrogen Peroxide and Glucose

“…Therefore, target PBA/UiO-66/NF exhibits much higher sensing sensitivity than PBA/NF. The contrasting results are concluded in Table S2 between our electrode and recently emerging electrodes as H 2 O 2 sensors. ,,− As shown in Table S2, the PBA/UiO-66/NF electrode exhibits ultrahigh sensitivity and lower LOD for H 2 O 2 , significantly superior to other electrode materials, proving our successful strategy and its importance, and necessity for such design.…”

Biosensing of Cysteine through the Induction of Oxygen Vacancies in a Cu/Zr Heterostructure Prepared by Supercritical Antisolvent Technique

“…Ultrapure water (18.2 MΩ·cm) was used for the preparation of all aqueous solutions. The Cu/Zr material (CZ SAS ) was synthesized following the procedures outlined in the relevant literatures. ,,− Cu­(NO 3 ) 2 ·3H 2 O, PVP-58k ( M w = 58000), phosphoric acid (AR), anhydrous potassium dihydrogen phosphate (KH 2 PO 4 (99.5%)), sodium dihydrogen phosphate (NaH 2 PO 4 (AR)), methanol (AR), ethanol (AR), and zirconium acetylacetonate (Zr­(acac) 4 (98%)) were purchased from Shanghai Macklin Biochemical Co., Ltd. Acetone (AR) was purchased from Sigma Ltd. (St. Louis, USA). High-purity CO 2 (99.9%) was obtained from Xiamen Rihong Air Products Co., Ltd. Cys (99%) was purchased from Aladdin Reagent Co., Ltd. (Shanghai).…”

“…In contrast to conventional composite materials, the rational design of heterogeneous interface structures can optimize energy level matching, thereby enhancing the flow of electron holes to promote redox capability. This innovation enables applications such as photoelectric conversion and photocatalysis. − CuO is widely used in electrocatalysis due to its narrow bandgap, while ZrO 2 possesses characteristics such as redox capability, p-type semiconductor behavior, ease of generating oxygen vacancies, good biocompatibility, chemical stability, and modifiability through coordination compounds. − These attributes render Zr suitable for synergistic combination with Cu, enhancing catalytic performance . The advent of the heterojunction marks a paradigm shift by effectively amalgamating the merits of Cu and Zr materials.…”