Development of interfacial strong Interaction-enhanced C-F@CuBi2(Ox/N1-x)4/CN Nano-sheet clusters photocatalysts for the simultaneous degradation of tetracycline and reduced Cr(VI)

A Calix[4]resorcinarene-Copper(II) Based Supramolecular Nanocapsule with Encapsulated Polyoxometalates for Enhanced Photocatalytic Activity

“…The positive slope for the linear C 2– – V curve suggested that 1 is a typical n -type semiconductor, and the flat band potential of 1 can be estimated to −0.98 V vs saturated calomel electrode (SCE) and converted to −0.74 V vs. NHE. CB potential was nearly 0.1 negative than flat band potential which was consistent with the characteristic of n-type semiconductor …”

“…CB potential was nearly 0.1 negative than flat band potential which was consistent with the characteristic of n-type semiconductor. 79 For the photoinduced charge carriers, the separation and migration efficiency can be evaluated by electrochemical impedance spectroscopy (EIS) and transient photocurrent response (I−t). Figure 3a displays the photocurrent densities of 1 and pure H 3 PW 12 O 40 (PW 12 ) under simulated sunlight irradiation.…”

Synergistic Effect of Ion Doping and Type-II Heterojunction Construction and Ciprofloxacin Degradation by MIL-68(In,Bi)-NH2@BiOBr under Visible Light

“…Subsequently, the curves shown in Figure b were obtained according to the Tauc equation like eq . And the energy band-gap size of the resulting materials can be estimated to be 3.05, 2.51, and 2.41 eV for BiOBr, MIL-68(In,Bi)-NH 2 , and 300MIBN@BOB, respectively . Compared to MIL-68(In)-NH 2 ( E g = 2.81 eV), MIL-68(In,Bi)-NH 2 has a narrower energy band-gap size, demonstrating that the doping of Bi atoms enhanced its utilization efficiency of visible light and charge-transfer efficiency α italichv = A false( italichv − E g false) n / 2 The energy band structure of the material was obtained using Mott–Schottky (M–S) curves at frequencies of 500, 800, and 1000 HZ.…”

“…Time-resolved photoluminescence spectroscopy (TR-PL) is an effective method for evaluating the compounding efficiency and life span of photogenerated carriers. In Figure b, the data of TR-PL spectra of MIL-68(In,Bi)-NH 2 , BiOBr, and 300MIBN@BOB were fitting by a biexponential model (eq ) R ( t ) = A 1 nobreak0em0.1em⁡ exp ( − t τ 1 ) + A 2 nobreak0em0.1em⁡ exp ( − t τ 2 ) where τ 1 , τ 2 , A 1 , and A 2 denote the lifetime of the normalized fluorescence decay and associated amplitude. Further, the average fluorescence lifetime (τ avg ) can be calculated by eq τ avg = B 1 τ 1 2 + B 2 τ 2 2 B 1 τ 1 + B 2 τ 2 The detailed fitting data are shown in Table S2.…”

“…In Figure b, the data of TR-PL spectra of MIL-68(In,Bi)-NH 2 , BiOBr, and 300MIBN@BOB were fitting by a biexponential model (eq ) R ( t ) = A 1 nobreak0em0.1em⁡ exp ( − t τ 1 ) + A 2 nobreak0em0.1em⁡ exp ( − t τ 2 ) where τ 1 , τ 2 , A 1 , and A 2 denote the lifetime of the normalized fluorescence decay and associated amplitude. Further, the average fluorescence lifetime (τ avg ) can be calculated by eq τ avg = B 1 τ 1 2 + B 2 τ 2 2 B 1 τ 1 + B 2 τ 2 The detailed fitting data are shown in Table S2. As can be seen in Figure b, in comparison to MIL-68(In, Bi)-NH 2 (τ avg = 1.385 ns) and BiOBr (τ avg = 1.544 ns), 300MIBN@BOB has the longest average fluorescence lifetime (τ avg = 1.680 ns).…”