5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin–functionalized urchin-like CuCo2O4 as an excellent artificial nanozyme for determination of dopamine

Zinc pyrovanadate nanorods with excellent peroxidase-like activity at physiological pH for the colorimetric assay of H2O2 and epinephrine

“…Similar to the natural enzyme HRP and reported nanozymes, 41,42 the catalytic activity of the Zn 3 V 2 O 7 (OH) 2 ·2H 2 O nanozyme is also easily affected by the pH and temperature, respectively. Thus, the influences of pH and temperature on the peroxidase-like activity of Zn 3 V 2 O 7 (OH) 2 ·2H 2 O were optimized.…”

An Unprecedented FeMo6@Ce‐Uio‐66 Nanocomposite with Cascade Enzyme‐Mimic Activity as Colorimetric Sensing Platform

“…As shown in Figures 6b and c, the fluorescence intensity of DAP at 552 nm increased gradually with the concentration of DA changes in the range of 1–1000 μ M, in which the fluorescence intensity was proportional to DA concentration between 1∼80 μ M (R 2 =0.993) with the limit of detection (LOD) of 0.04 μ M (S/N=3, ΔF is the difference of F and F 0 , fluorescence intensity presence and absence of DA). Note that such a sensing performance of FC‐66(3) for DA is at the high level of recent literature studies (Table S3) [49–54] . INAzyme FC‐66 achieves the purpose of “turning‐on‐enhanced” detection of DA by gaining in four areas: (1) the external framework of FC‐66 provides high local concentration of active sites and substrates; (2) hexanuclear [Ce 6 O 4 (OH) 4 ] 12+ clusters on the frame and internal FeMo 6 enabling efficient mass transfer between cascade system; (3) and then minimizing active intermediate decomposition; (4) thus FC‐66 successful simulating sophisticated confining sequential cascading strategies in nature.…”

“…Note that such a sensing performance of FC-66(3) for DA is at the high level of recent literature studies (Table S3). [49][50][51][52][53][54] INAzyme FC-66 achieves the purpose of "turning-on-enhanced" detection of DA by gaining in four areas: To validate the practicality of the FC-66-OPD system, it was used for the detection of DA in dopamine hydrochloride injection. First, results of run experiment of FC-66(3) as cascade Chemistry-A European Journal sensing-pattern (Figure S15) show that cascade enzyme-mimic activities do not decrease significantly after subsequent five runs under the same conditions, and XRD, IR, and TEM analysis showed that the peak positions of FC-66(3) were similar before and after the evaluation of cascade enzyme-mimic activities (Figures S16-S18), delivering that FC-66(3) was highly stable and reproducible after detection reaction.…”

Enhancement of photoelectrocatalytic performance of copper cobaltate nanoflowers modified with 5,10,15,20-tetrakis(4-carboxylphenyl)porphyrin for methanol oxidation under light

“…The result of N 1s spectrum provides the evidence that the porphyrin has been modified on the CuCo 2 O 4 nanomaterial successfully. 33–35…”

“…The result of N 1s spectrum provides the evidence that the porphyrin has been modified on the CuCo 2 O 4 nanomaterial successfully. [33][34][35] The Fourier-transform infrared (FT-IR) spectra of CuCo 2 O 4 , H 2 TCPP/CuCo 2 O 4 , and H 2 TCPP were recorded to further investigate the composition (Fig. 2F).…”