Accelerated photocatalytic degradation of organic pollutant over metal-organic framework MIL-53(Fe) under visible LED light mediated by persulfate

A 3D Iodoplumbate Semiconducting Open Framework with Visible‐light‐induced Photocatalytic Performance

“…Herein, Ammonium oxalate (AO), tert-butyl alcohol( TBA) and Benzoquinone (BQ) were chosen as hole (h + ), hydroxyl radical( COH) and the superoxide (O 2 C À )s cavengers, respectively. [16,43,[52][53][54][55][56][57] The AO and BQ have more obviousi nfluence on the photocatalytic activity,w hich indicating that h + and O 2 C À are the main active speciesint he photodegradation process (Figure 3c).Compound 1,a sw ell as the reportedh ybrid halometallates containing conjugatedo rganic cations, such as [N-ethyl-4-cyanopyridinium][Ag 2 I 3 ], [9] [N-benzylpyridinium] 2 [Cu 6 I 8 ], [58] [(Me) 2 -2,2'-bipy][Cu 8 I 10 ], [55] [Ni(2,2'-bipy)(THF) 2 (H 2 O) 2 ](Ag 10 I 12 )·2DMF (THF = tetrahydrofuran, DMF = N,N'-dimethylformamide, 2,2'bipy = 2,2'-bipyridine), [59] and [Pb 5 Cu 2 I 16 ][(Me) 2 (4-TPT)] 2 (4-TPT = 2,4,6-tris(4-pyridyl)-1,3,5-triazine), [45] possess narrow band gaps of 1.35-2.74 eV.R eportedly, on the basis of electronic band structuralc alculation, the conductionb ands of most conjugated organic cations directed halometallates are primarily occupied by the conjugatedo rganic moieties, while the valence bandsa re mainly made up by anionic inorganic networks. [46,55] The contribution of conjugated organic moieties to conduction bands decreasing the energy position and leading to the small band gaps.…”

Peroxymonosulfate enhanced visible light photocatalytic degradation bisphenol A by single-atom dispersed Ag mesoporous g-C3N4 hybrid

“…Compared with • OH, SO 4 •− has a series of merits, such as stronger oxidizing capability (2.5-3.1 V vs. NHE), higher selectivity of oxidation and independence of pH [23]. For example, Gao et al [24] found that the introduction of PS can be activated by photogenerated electrons to generate SO 4 •− , resulting the accelerated photocatalytic degradation of AO7 in the MIL-53(Fe)/PS/vis process. Inspired by these excellent works abovementioned, single-atom dispersed Ag mesoporous g-C 3 N 4 hybrid (Ag/mpg-C 3 N 4 ) was synthesized and applied as a photocatalyst to degrade BPA in the presence of PMS.…”

Tripyridine‐Derivative‐Derived Semiconducting Iodo‐Argentate/Cuprate Hybrids with Excellent Visible‐Light‐Induced Photocatalytic Performance

“…To get an in-depth understanding the catalytic property and study the possible mechanism, the radical trappinge xperimentsw ere carried out to identify the main reactive species responsible for the degradation.A mmonium oxalate (AO), Benzoquinone (BQ) and tertbutyl alcohol (TBA) weres elected as scavengers for hole (h + ), the superoxide (O 2 C À )a nd hydroxyl radical (COH), respectively. [51,52,68,69] Obviously,f or the MO solutions, the respective inhibition rates of AO, BQ, and TBAa ss cavengers are 95.5 %, 97.1 %a nd 95.4 %, indicating that h + ,O 2 C À and COH all play very important roles for the degradation of MO. For the MV solutions, the inhibition rates of AO, BQ, and TBA as scavengers are 90.0 %, 60.6 %a nd 80.0 %, suggesting that O 2 C À was more activet han h + and COH in decomposition of MV.T of urther study the relationship between the structure and optical property,e lectronic structure calculations were performed based on density functional theory.…”