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Santana RMDR, Napoleão DC, Rodriguez-Diaz JM, Gomes RKDM, Silva MG, Garcia RRP, Vinhas GM, Duarte MMMB. Original nanostructured bacterial cellulose/pyrite composite: Photocatalytic application in advanced oxidation processes. CHEMOSPHERE 2023; 319:137953. [PMID: 36709843 DOI: 10.1016/j.chemosphere.2023.137953] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/30/2022] [Accepted: 01/22/2023] [Indexed: 06/18/2023]
Abstract
The development of an original catalytic composite of bacterial cellulose (BC) and pyrite (FeS2) for environmental application was the objective of this study. Nanoparticles of the FeS2 were synthesized from the hydrothermal method and immobilized on the BC structure using ex situ methodology. In the BC, the FTIR and XRD analyzes showed the absorption band associated with the Fe-S bond and crystalline peaks attributed to the pyrite. Thus, the immobilization of the iron particles on the biopolymer was proven, producing the composite BC/FeS2. The use of the SEM technique also ratifies the composite production by identifying the fibrillar structure morphology of the cellulose covered by FeS2 particles. The total iron concentration was 54.76 ± 1.69 mg L-1, determined by flame atomic absorption analysis. TG analysis and degradation tests showed respectively the thermal stability of the new material and its high catalytic potential. A multi-component solution of textile dyes was used as the matrix to be treated via advanced oxidative processes. The composite acted as the catalyst for the Fenton and photo-Fenton processes, with degradations of 52.87 and 96.82%, respectively. The material proved stability by showing low iron leaching (2.02 ± 0.09 and 2.11 ± 0.11 mg L-1 for the respective processes). Thus, its high potential for reuse is presumed, given the remaining concentration of this metal in the BC. The results showed that the BC/FeS2 composite is suitable to solve the problems associated with using catalysts in suspension form.
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Affiliation(s)
| | | | - Joan Manuel Rodriguez-Diaz
- Departamento de Procesos Químicos, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo, Manabí, 130104, Ecuador; Laboratorio de Análisis Químicos y Biotecnológicos, Instituto de Investigación, Universidad Técnica de Manabí, Portoviejo, Manabí, 130104, Ecuador.
| | | | - Marina Gomes Silva
- Chemical Engineering Department, Universidade Federal de Pernambuco, Recife, PE, Brazil.
| | - Ramón Raudel Peña Garcia
- Academic Unit of Cabo de Santo Agostinho, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho, PE, Brazil.
| | - Glória Maria Vinhas
- Chemical Engineering Department, Universidade Federal de Pernambuco, Recife, PE, Brazil.
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Yang J, Gao X, Liu H. Dispersion of copper phthalocyanine pigment nanoparticles by eco-friendly ethoxylated cardanol in aqueous solution. TENSIDE SURFACT DET 2022. [DOI: 10.1515/tsd-2022-2432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The environmentally friendly surfactant ethoxylated cardanol (EC) was investigated for dispersing copper phthalocyanine (CuPc) pigment nanoparticles into aqueous solution. The stability of the dispersion was investigated using UV-Vis spectra. The particle size was measured by optical microscopy, transmission electron microscopy and dynamic light scattering. The surface of the nanoparticles was characterised by measurements of the zeta potential and wettability. The coating application was investigated by incorporating CuPc blue pigment into resin and inorganic filler, and the colour strength of the coating film was compared. The results show that the EC can effectively wet and disperse the CuPc particles. The stabilisation of the particles is achieved by a steric mechanism in which the hydrophobic chains of the surfactant are adsorbed onto the surfaces of the CuPc nanoparticles and the ethylene oxide chains are dispersed in the aqueous phase. At EC concentrations greater than 0.1%, the CuPc nanoparticles appear to deagglomerate. The colour strength of CuPc nanoparticles present as dispersed pigment in resin can be increased in the presence of the EC surfactant.
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Affiliation(s)
- Jiang Yang
- School of Petrochemical Engineering , Liaoning Petrochemical University , Fushun , Liaoning 113001 , China
| | - Xiaoyan Gao
- School of Petrochemical Engineering , Liaoning Petrochemical University , Fushun , Liaoning 113001 , China
| | - Hailing Liu
- School of Petrochemical Engineering , Liaoning Petrochemical University , Fushun , Liaoning 113001 , China
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Mgidlana S, Sen P, Nyokong T. Photodegradation of tetracycline by asymmetrical zinc(II)phthalocyanines conjugated to cobalt tungstate nanoparticles. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Huang X, Xiao J, Yi Q, Li D, Liu C, Liu Y. Construction of core-shell Fe 3O 4@GO-CoPc photo-Fenton catalyst for superior removal of tetracycline: The role of GO in promotion of H 2O 2 to •OH conversion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 308:114613. [PMID: 35124310 DOI: 10.1016/j.jenvman.2022.114613] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 01/14/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
A novel core-shell structured Fe3O4@GO-CoPc magnetic catalyst, which is with magnetite (Fe3O4) as the core, graphene oxide (GO) as the interlayer and cobalt-phthalocyanine (CoPc) as the shell, was successfully prepared and used as a heterogeneous photo-Fenton catalyst for tetracycline (TC) degradation in this work. The core-shell structure of the catalyst was confirmed by XRD, FTIR, SEM and TEM. BET and magnetic hysteresis loops measurements indicated that Fe3O4@GO-CoPc catalyst owned large specific surface area and could be easily recovered under an external magnetic field. Meanwhile, the experimental results of TC degradation demonstrated that the photo-Fenton efficiency of Fe3O4@GO-CoPc was excellent. When the reaction time was 120 min, TC could be degraded almost completely in the photo-Fenton system with Fe3O4@GO-CoPc. The high photo-Fenton catalytic activity of Fe3O4@GO-CoPc could be resulted from the effective transfer of photo-generated electrons between CoPc and Fe3O4 by GO. Moreover, the main reaction species, •OH, O2•-, 1O2 and h+, were verified by the analysis of active species in this system. Finally, the mechanism analyses and quantitative analysis results of active species indicated that the introduction of GO accelerated the cycle between Fe(II) and Fe(III) as well as improved the effective utilization of H2O2 (the efficiency of conversion of H2O2 to •OH).
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Affiliation(s)
- Xiaohan Huang
- Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China
| | - Jianfei Xiao
- Hunan Non-ferrous Metals Holding Group Co., Ltd, Changsha, 410000, China
| | - Qing Yi
- Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China
| | - Dejian Li
- Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China
| | - Chenrui Liu
- Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China
| | - Yun Liu
- Department of Environmental Science and Engineering, College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China.
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Yin Y, Xin Z, Xu G, Liu Y. A new type of dual-nuclear binary composite catalyst BiCoPc/MIL-100(Fe) for synergistic photocatalytic degradation of dyes. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.2001721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yanbing Yin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Zhaosong Xin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Guopeng Xu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Yang Liu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
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Chen F, Wang R, Chen H, Lu H. Preparation of polyacrylamide/MXene hydrogels as highly-efficient electro-adsorbents for methylene blue removal. POLYM-PLAST TECH MAT 2021. [DOI: 10.1080/25740881.2021.1921207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Fanglin Chen
- School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, People’s Republic of China
| | - Riyuan Wang
- School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, People’s Republic of China
| | - Haoran Chen
- School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, People’s Republic of China
| | - Hongdian Lu
- School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, People’s Republic of China
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Yin Y, Xin Z, Yang H, Xu G, Liu Y, LI X. Synthesis of a 2,4-DcCoPc/MIL-101(Fe) composite and catalytic oxidation of styrene to benzaldehyde. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1910679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yanbing Yin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Zhaosong Xin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Hang Yang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Guopeng Xu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Yang Liu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Xiaolong LI
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
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A versatile heterogeneous photocatalyst: nanoporous gold powder modified with a zinc(II) phthalocyanine derivative for singlet oxygen [4 + 2] cycloadditions. Photochem Photobiol Sci 2021; 20:547-558. [PMID: 33876418 DOI: 10.1007/s43630-021-00037-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
Nanoporous gold was functionalized with a photosensitizer, a zinc(II) phthalocyanine derivative. Such systems are active for the generation of reactive singlet oxygen which can be used for photocatalytic oxidation reactions. This study aims to demonstrate the versatility of such an approach, in terms of substrates and the employed solvent, only possible for a truly heterogeneous catalytic system. The activity of the hybrid system was studied for [4 + 2] cycloadditions of three different types of dienes and a total of eight substrates in two organic solvents and once in water. The highest activity was measured for 1,3-diphenylisobenzofuran, which is also highest in terms of sensitivity for the reaction with 1O2. Trends in conversion could be anticipated based on reported values for the rate constant for the reaction of 1O2. In almost all cases, an amplification of the conversion by immobilization of the sensitizer onto nanoporous gold was observed. The limiting case was ergosterol, which was the largest of all substrates with a van-der-Waals radius of about 2.1 nm. Additional factors such as the limited lifetime of 1O2 in different solvents as well as the hampered diffusion of the substrates were identified.
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Synthesis and Characterization of New Imidazole Phthalocyanine for Photodegradation of Micro-Organic Pollutants from Sea Water. Catalysts 2020. [DOI: 10.3390/catal10080906] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
In this study, a series of new metal phthalocyanines with imidazole function MPc(Imz) (M: Cd, Hg, Zn and Pd) were synthesized to improve the photocatalyst performances. All physical properties such as total energy, HOMO, LUMO energies of MPc(Imz), as well as their vibrational frequencies have been determined by DFT method using B3LYP theory level at 6-311G (d, p) and sdd basis set. The gap of energy level between work function (WF) of ITO and LUMO of PdPc(Imdz) was 1.53 eV and represents the highest barrier beneficial to electron injection compared to WF of ZnPc(Imz), HgPc(Imz), and CdPc(Imz). Furthermore, the PdPc(Imdz) thin films on indium tin oxide (ITO) glass were prepared by spin coating and vacuum evaporation technique, and were characterized by X-ray diffraction (XRD), surface electron morphology (SEM), atomic force microscopy (AFM), and UV–Vis spectroscopy. The photocatalytic activity of the ITO/glass supported thin films and degradation rates of chlorinated phenols in synthetic seawater, under visible light irradiation were optimized to achieve conversions of 80–90%. Experiments on synthetic seawater samples showed that the chloride-specific increase in photodegradation could be attributed to photochemically generated chloride radicals rather than other photoproduced reactive intermediates [e.g., excited-state triplet PdPc(Imz) (3PdPc(Imz)*), reactive oxygen species]. The major 2,3,4,5-Tetrachlorophenol degradation intermediates identified by gas chromatography-mass spectrometry (GC/MS) were 2,3,5-Trichlorophenol, 3,5-dichlorophenol, dichlorodihydroxy-benzene and 3,4,5-trichlorocatechol.
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