1
|
Stojanović S, Rac V, Mojsilović K, Vasilić R, Marković S, Damjanović-Vasilić L. Photocatalytic degradation of bisphenol A in aqueous solution using TiO 2/clinoptilolite hybrid photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:84046-84060. [PMID: 37354298 DOI: 10.1007/s11356-023-28397-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 06/19/2023] [Indexed: 06/26/2023]
Abstract
Photocatalytic degradation of bisphenol A (BPA) was investigated using commercial TiO2 P25 nanoparticles supported on natural zeolite clinoptilolite (Cli). Employing ultrasound assisted solid-state dispersion method hybrid photocatalyst containing 20 wt% of TiO2, marked TCli-20, was prepared. The structural, morphological and surface properties, and particle size distribution of TCli-20 were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, atomic force microscopy, Brunner-Emmet-Teller method and laser diffraction. The results revealed a successful loading of TiO2 P25 nanoparticles on Cli surface and the preservation of both zeolitic structure and optical properties of TiO2. The influence of catalyst dose, pH value and the addition of hydrogen peroxide (H2O2) was evaluated. The optimal reaction conditions were 2 g/L of catalyst at near-neutral conditions (pH = 6.4) for complete BPA (5 mg/L) photodegradation after 180 min of exposure to simulated solar light. The addition of H2O2 was beneficial for the degradation process and led to the removal of BPA after 120 min of irradiation. BPA removal (60% for 180 min of irradiation) was reduced when TCli-20 was tested in bottled drinking water due to the presence of bicarbonate ions which acted as scavengers for hydroxyl radicals. Even though the photocatalytic activity of TCli-20 decreased after several cycles of usage, 70% of BPA was still successfully degraded during the fourth cycle. The reusability study showed easy separation, stability and good photocatalytic ability of investigated cost-effective hybrid photocatalyst.
Collapse
Affiliation(s)
- Srna Stojanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, P.O. Box 47, 11158, Belgrade 118, Serbia
| | - Vladislav Rac
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080, Belgrade, Serbia
| | - Kristina Mojsilović
- Faculty of Physics, University of Belgrade, Studentski Trg 12-16, 11000, Belgrade, Serbia
| | - Rastko Vasilić
- Faculty of Physics, University of Belgrade, Studentski Trg 12-16, 11000, Belgrade, Serbia
| | - Smilja Marković
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000, Belgrade, Serbia
| | - Ljiljana Damjanović-Vasilić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, P.O. Box 47, 11158, Belgrade 118, Serbia.
| |
Collapse
|
2
|
Pan Y, Zhang Y, Huang Y, Jia Y, Chen L, Cui H. Synergistic effect of adsorptive photocatalytic oxidation and degradation mechanism of cyanides and Cu/Zn complexes over TiO 2/ZSM-5 in real wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125802. [PMID: 33865109 DOI: 10.1016/j.jhazmat.2021.125802] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
The treatment of cyanide wastewater from the gold industry is essential. Photocatalytic oxidation is an effective method for the elimination of cyanides and metal cyanide complexes. TiO2/ZSM-5 composite photocatalysts with different SiO2/Al2O3 ratios were prepared using the solid-state dispersion (SSD) method. The composite catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 adsorption-desorption, and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). The catalytic efficiency of different SiO2/Al2O3 ratios and the synergistic effect of adsorptive photocatalytic oxidation for the degradation of cyanide wastewater was investigated under different adsorption and illumination times. With the extension of the photocatalytic time (>2.0 h), the composite catalyst with a high SiO2/Al2O3 ratio had better photocatalytic performance. A 93.97% degradation efficiency of total cyanides was observed after adsorption for 3.0 h and illumination for 4.0 h under room temperature with air as the oxidant. The removal efficiencies of the copper and zinc ions were 81.67% and 100%, respectively. The degradation of cyanide followed pseudo-first-order kinetics. Energy dispersive spectroscopy (EDS) results showed that the generally irregular surface of the catalyst with a high SiO2/Al2O3 ratio contains more nano-TiO2. The adsorption capacities of copper and zinc were relatively high. X-ray photoelectron spectroscopy (XPS) suggested that cyanide was eventually degraded to CO2 and NO3-. Copper and zinc were removed in the form of Cu(II) and Zn(II).
Collapse
Affiliation(s)
- Yubo Pan
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China
| | - Yali Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China.
| | - Yaoguo Huang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China
| | - Yun Jia
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China
| | - Linlin Chen
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China
| | - Hongyou Cui
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, China.
| |
Collapse
|
3
|
Evaluations of physico-chemical properties of TiO2/clinoptilolite synthesized via three methods on photocatalytic degradation of crystal violet. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.09.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
4
|
Fernández-Catalá J, Sánchez-Rubio M, Navlani-García M, Berenguer-Murcia Á, Cazorla-Amorós D. Synthesis of TiO 2/Nanozeolite Composites for Highly Efficient Photocatalytic Oxidation of Propene in the Gas Phase. ACS OMEGA 2020; 5:31323-31331. [PMID: 33324843 PMCID: PMC7726953 DOI: 10.1021/acsomega.0c04793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/13/2020] [Indexed: 05/28/2023]
Abstract
In this work, we reported the preparation of composites based on titania (TiO2) and Zeolite Socony Mobil-5 (ZSM-5) nanozeolite, following two approaches (i.e., incorporating the presynthesized zeolite in the synthesis medium of TiO2 and incorporating presynthesized TiO2 in the synthesis medium of ZSM-5). The materials synthesized were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), nitrogen adsorption, X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectrometry analysis, and their photocatalytic activities were assessed in the oxidation of propene in the gas phase. It was observed that the synthesis methodology affects the final properties of the composite, which ultimately affected their photocatalytic performance in the studied application. It was found that the Nano-ZSM5/TiO2 composite was the most active among the investigated samples, which was attributed to the intimate contact between the two components of the composite, the preserved properties of the photocatalytic active phase in the final material, and the positive contribution of the nanozeolite by increasing the local concentration of propene.
Collapse
Affiliation(s)
- Javier Fernández-Catalá
- Materials Institute and Inorganic
Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Miriam Sánchez-Rubio
- Materials Institute and Inorganic
Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Miriam Navlani-García
- Materials Institute and Inorganic
Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Ángel Berenguer-Murcia
- Materials Institute and Inorganic
Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Diego Cazorla-Amorós
- Materials Institute and Inorganic
Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| |
Collapse
|
5
|
Lin Z, Shen W, Roux JC, Xi H. Photo-catalytic degradation of mixed gaseous HCHO and C 6H 6 in paper mills: Experimental and theoretical study on the adsorption behavior simulation and catalytic reaction mechanism. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121779. [PMID: 31848097 DOI: 10.1016/j.jhazmat.2019.121779] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/08/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
VOCs in paper mills have severely exceeded the emission standards and their photo-catalytic degradations should focus on the experimental and theoretical studies. This work used TiO2 colloid as catalyst to study the photo-catalytic degradations of mixed HCHO and C6H6 at five mixing ratios. The adsorption behaviors of pure forms and mixtures on the TiO2 (101) surface were simulated using density functional theory (DFT), and their catalytic reaction mechanisms were also analyzed. The following results were found: (1) With increasing initial concentration, the enhanced adsorption and easy degradation interpreted the increased degradation rate for pure HCHO, while the counteractions of enhanced adsorption and inhibited catalytic reaction kept the constant degradation rate for pure C6H6. (2) For their mixtures, the HCHO degradation was inhibited at high C6H6 concentration due to the inhibited adsorption and catalytic reaction of HCHO. The C6H6 degradation was slightly weakened at high HCHO concentration and then restored to the normal degradation rate of C6H6, which could be attributed to the weakened adsorption of C6H6 and the easy degradation of HCHO in the initial stage. The combined experimental, simulation, and theoretical results provides sufficient information to understand the photo-catalytic degradation process for mixed gaseous pollutants in different realistic environments.
Collapse
Affiliation(s)
- Zhifeng Lin
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Wenhao Shen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China; State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, PR China.
| | - Jean-Claude Roux
- Laboratory of Pulp and Paper Science and Graphic Arts, Grenoble Institute of Technology - Pagora, 461 Rue de la papeterie, 38400 Saint-Martin d'Hères, France
| | - Hongxia Xi
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China
| |
Collapse
|
6
|
Synthesis and characterization of nanoparticles and composites as bactericides. J Microbiol Methods 2019; 167:105736. [DOI: 10.1016/j.mimet.2019.105736] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 10/06/2019] [Accepted: 10/06/2019] [Indexed: 11/19/2022]
|
7
|
Suárez S, Jansson I, Ohtani B, Sánchez B. From titania nanoparticles to decahedral anatase particles: Photocatalytic activity of TiO2/zeolite hybrids for VOCs oxidation. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.09.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|