Facet-Dependent Catalytic Activity of Nanosheet-Assembled Bismuth Oxyiodide Microspheres in Degradation of Bisphenol A

2015 ◽  
Vol 49 (10) ◽  
pp. 6240-6248 ◽  
Author(s):  
Meilan Pan ◽  
Haijun Zhang ◽  
Guandao Gao ◽  
Lu Liu ◽  
Wei Chen
Keyword(s):  
Catalytic Activity ◽  
Bisphenol A

Facile synthesis of novel Co3O4-Bi2O3 catalysts and their catalytic activity on bisphenol A by peroxymonosulfate activation

2017 ◽  
Vol 326 ◽  
pp. 1095-1104 ◽  
Author(s):  
Limin Hu ◽  
Guangshan Zhang ◽  
Qiao Wang ◽  
Yanlong Sun ◽  
Meng Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Bisphenol A ◽  
Facile Synthesis

scholarly journals Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1951 ◽  
Author(s):  
Fenglian Huang ◽  
Shiqiang Tian ◽  
Yan Qi ◽  
Erping Li ◽  
Liangliang Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Bisphenol A ◽  
Visible Light ◽  
Layered Double Hydroxides ◽  
Electrochemical Impedance ◽  
Reaction System ◽  
High Catalytic Activity ◽  
Exchange Method ◽  
Double Hydroxides ◽  
Circumneutral Ph

(1) Background: Iron tetrasulfophthalocyanine with a large nonlinear optical coefficient, good stability, and high catalytic activity has aroused the attention of researchers in the field of photo-Fenton reaction. Further improvement of the visible light photo-Fenton catalytic activity under circumneutral pH conditions for their practical application is still of great importance. (2) Methods: In this paper, iron tetrasulfophthalocyanine (FePcS) and phosphomolybdic acid (PMA) cointercalated layered double hydroxides (LDH) were synthesized by the ion-exchange method. All samples were fully characterized by various techniques and the results showed that FePcS and PMA were successfully intercalated in layered double hydroxides and the resulted compound exhibited strong absorption in the visible light region. The cointercalation compound was tested as a heterogeneous catalyst for the visible light photo-Fenton degradation of bisphenol A (BPA) at circumneutral pH. (3) Results: The results showed that the degradation and total organic carbon removal efficiencies of bisphenol A were 100% and 69.2%, respectively. (4) Conclusions: The cyclic voltammetry and electrochemical impedance spectroscopy measurements demonstrated that the main contribution of PMA to the enhanced photo-Fenton activity of FePcS–PMA–LDH comes from the acceleration of electron transfer in the reaction system. Additionally, the possible reaction mechanism in the photo-Fenton system catalyzed by FePcS–PMA–LDH was also proposed.

Ligand-Induced Drastic Enhancement of Catalytic Activity of Nano-BiFeO3 for Oxidative Degradation of Bisphenol A

ACS Catalysis ◽  
2011 ◽  
Vol 1 (10) ◽  
pp. 1193-1202 ◽  
Author(s):  
Nan Wang ◽  
Lihua Zhu ◽  
Ming Lei ◽  
Yuanbin She ◽  
Meijuan Cao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Bisphenol A ◽  
Oxidative Degradation

Catalytic ozonation of bisphenol A in aqueous solution using Mn-Ce/HZSM-5 as catalyst

2015 ◽  
Vol 72 (5) ◽  
pp. 696-703 ◽  
Author(s):  
Yanfang Liu ◽  
Junna Zhao ◽  
Zaixing Li ◽  
Guixia Li ◽  
Wei Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Bisphenol A ◽  
Heterogeneous Catalysts ◽  
Butyl Alcohol ◽  
Catalytic Ozonation ◽  
Point Of Zero Charge ◽  
Toc Removal ◽  
Tert Butyl Alcohol ◽  
Bpa Removal

Mixed manganese and cerium oxide supported on HZSM-5 were synthesized and used as heterogeneous catalysts for ozonation of bisphenol A (BPA) in aqueous solution. The prepared catalysts of Mn-Ce/HZSM-5 were characterized by X-ray diffraction, scanning electron microscopy and Fourier transform-infrared spectroscopy. The results indicated that Mn-Ce/HZSM-5 exhibits extraordinary catalytic activity for the degradation of BPA. Removal of 89.3% of BPA and 90.4% of total organic carbon (TOC) was achieved in 30 min, compared to non-catalytic ozonation, where only 50.5% BPA and 28.1% TOC removal were reached under the same conditions. Adsorption of BPA on HZSM-5 support and Mn-Ce/HZSM-5 catalysts was negligible. The strong inhibition of BPA removal by tert-butyl alcohol indicated that the attack of hydroxyl radicals was responsible for the improvement of catalytic ozonation. It was observed that at neutral pH, which is near the point of zero charge of the catalyst, the catalytic activity reached its maximum. Increasing the amount of Mn-Ce/HZSM-5 catalyst until it exceeded 3 g/L did not show a strong effect on BPA removal. The catalysts showed high stability and reusability.

scholarly journals Environmentally Benign Formation of Nickel Hexacyanoferrate-Derived Mesoframes for Heterogeneous Catalysis

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2756
Author(s):  
Sascha Keßler ◽  
Elrike R. Reinalter ◽  
Johannes Schmidt ◽  
Helmut Cölfen
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Bisphenol A ◽  
Rhodamine B ◽  
Organic Contaminants ◽  
Environmentally Benign ◽  
Reaction Conditions ◽  
Nickel Hexacyanoferrate ◽  
Alkaline Etching ◽  
Fe Sites

The tetramethylammonium hydroxide (TMAH)-controlled alkaline etching of nickel hexacyanoferrate (NiHCF) mesocrystals is explored. The alkaline etching enables the formation of hollow framework structures with an increased surface area, the exposure of active Ni and Fe sites and the retention of morphology. The ambient reaction conditions enable the establishment of a sustainable production. Our work reveals novel perspectives on the eco-friendly synthesis of hollow and colloidal superstructures for the efficient degradation of the organic contaminants rhodamine-B and bisphenol-A. In the case of peroxomonosulfate (PMS)-mediated bisphenol-A degradation, the rate constant of the etched mesoframes was 10,000 times higher indicating their significant catalytic activity.

The effect of inhomogeneity of the polymer structure on catalytic activity of ion exchangers

1979 ◽  
Vol 44 (9) ◽  
pp. 2612-2618 ◽  
Author(s):  
Karel Jeřábek
Keyword(s):  
Catalytic Activity ◽  
Bisphenol A ◽  
Polymer Structure ◽  
Ion Exchangers ◽  
Test Reaction

It has been shown that using the dependence of catalytic activity of ion exchangers on the degree of sulphonation one can infer on the structure of their polymeric skeleton. Using condensation of phenol and acetone yielding Bisphenol A as a test reaction we have been able to distinguish up to four fractions of active groups in a series of ion exchangers of the gel and macroreticular type affected to a different extent by the structure of the surrounding polymer mass.

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