1
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Zhang J, Liu T, Chen J, Jia K, Mai Y. Effect of Morphology on the Performance of Nb
2
O
5
Catalysts for Thioether Oxidation at Room Temperature under Solvent‐free Conditions. ChemistrySelect 2023. [DOI: 10.1002/slct.202204647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Junjie Zhang
- Department of Environmental Chemistry Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Tujin Liu
- Department of Environmental Chemistry Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Jiazhi Chen
- Department of Environmental Chemistry Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Kangle Jia
- Department of Environmental Chemistry Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Yuliang Mai
- Department of Environmental Chemistry Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
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2
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Yang JP, Yang P, Li N, Fan Y. Facet-Controlled MIL-125-NH2 Nanocrystals for Photocatalytic Oxidative Desulfurization. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02397-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Ali AO, El Naggar AM, Morshedy AS, Aboutaleb WA, Metwally NH. Synthesis and characterization of iron-alumina composites as novel efficient photocatalysts for removal of DBT. CHEMOSPHERE 2022; 307:136011. [PMID: 35970215 DOI: 10.1016/j.chemosphere.2022.136011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/18/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
The content of sulfur compounds in diesel fuels is one of the main encountered drawbacks during the production process. Such compounds are generally of substantial, hazardous, and negative environmental impacts. Thus, the massive reduction of their content is recommended. Among these compounds, DBT is one of the most challenging compounds to be disposed of industrially via the HDS method. Therefore, this study presents the removal of such compounds using the oxidative-photocatalytic desulfurization technique. Three iron oxide doped alumina composites containing different weight percentages of iron (10-30%) were synthesized as novel photocatalysts. Structural characteristics of these composites were verified via X-ray diffraction (XRD) by detecting the indicative peaks for Fe2O3 and Al2O3. These composites' surface and optical properties could reveal their mesoporous nature and suitability as effective visible-light photocatalysts. These structures were next introduced to the process of DBT removal from a model diesel oil with a content of 1500 ppm at different operating conditions. The composite, which contains 20% iron oxide, was the most effective photocatalyst of DBT elimination. Specifically, 97% removal of sulfur content in the model diesel oil was successfully attained under visible-light irradiation source with a power of 500 W at a reaction time equals to 30 min, 1 g/L as photocatalyst dose and H2O2 to feed ratio of 1.5.
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Affiliation(s)
- Anwaar O Ali
- Refining Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Cairo, Egypt
| | - Ahmed M El Naggar
- Refining Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Cairo, Egypt
| | - Asmaa S Morshedy
- Refining Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Cairo, Egypt
| | - Wael A Aboutaleb
- Refining Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Cairo, Egypt
| | - Nadia H Metwally
- Chemistry Departments, Faculty of Science, Cairo University, POX. 12613, Giza, Egypt.
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4
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Towards the Sustainable Production of Ultra-Low-Sulfur Fuels through Photocatalytic Oxidation. Catalysts 2022. [DOI: 10.3390/catal12091036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nowadays, the sulfur-containing compounds are removed from motor fuels through the traditional hydrodesulfurization technology, which takes place under harsh reaction conditions (temperature of 350–450 °C and pressure of 30–60 atm) in the presence of catalysts based on alumina with impregnated cobalt and molybdenum. According to the principles of green chemistry, energy requirements should be recognized for their environmental and economic impacts and should be minimized, i.e., the chemical processes should be carried out at ambient temperature and atmospheric pressure. This approach could be implemented using photocatalysts that are sensitive to visible light. The creation of highly active photocatalytic systems for the deep purification of fuels from sulfur compounds becomes an important task of modern catalysis science. The present critical review reports recent progress over the last 5 years in heterogeneous photocatalytic desulfurization under visible light irradiation. Specific attention is paid to the methods for boosting the photocatalytic activity of materials, with a focus on the creation of heterojunctions as the most promising approach. This review also discusses the influence of operating parameters (nature of oxidant, molar ratio of oxidant/sulfur-containing compounds, photocatalyst loading, etc.) on the reaction efficiency. Some perspectives and future research directions on photocatalytic desulfurization are also provided.
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5
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Nanoarchitectonics of Copper Tungsten-Mesoporous Silica with a New Template for Photo Oxidative-Desulfurization of Dibenzothiophene. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02363-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AbstractA novel CuWO4/SiO2 heterojunction catalyst was successfully synthesized using a new sulfonamide derivative. The physical characteristics of the prepared samples were investigated by TGA, XRD, FTIR, SEM, UV, PL, and XPS. The prepared catalysts were applied as a nano photocatalyst for photooxidative desulfurization of dibenzothiophene under visible light using hydrogen peroxide as an oxidant. The photocatalytic oxidative desulfurization performances of the prepared samples were investigated. Various factors as the reaction time, dibenzothiophene concentration, catalyst dose, and the oxidizing agent dose were also studied. The prepared photocatalyst has high desulfurization activity in the removal of DBT under mild conditions. Results showed that the CuWO4/SiO2 exhibited considerably higher activity than neat support SiO2. Such improved photocatalytic activity is mainly attributed to the efficient separation of photogenerated electron–hole pairs on CuWO4/SiO2 heterojunction. Moreover, the synergistic effects of this photocatalytic oxidation and the green oxidant hydrogen peroxide played an essential role in desulfurization. The reaction is pseudo-first-order and can reach 98.6% removal of dibenzothiophene after 70 min and 97.2% after four cycles.
Graphical Abstract
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6
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Saeed M, Munir M, Intisar A, Waseem A. Facile Synthesis of a Novel Ni-WO 3@g-C 3N 4 Nanocomposite for Efficient Oxidative Desulfurization of Both Model and Real Fuel. ACS OMEGA 2022; 7:15809-15820. [PMID: 35571809 PMCID: PMC9096920 DOI: 10.1021/acsomega.2c00886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/18/2022] [Indexed: 06/15/2023]
Abstract
The current study comprises the successful synthesis of a Ni-WO3@g-C3N4 composite as an efficient and recoverable nanocatalyst for oxidative desulfurization of both model and real fuel oils. The physiochemical characterization of the synthesized composite was confirmed via Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. SEM results showed that Ni-WO3 particles were well-decorated on the g-C3N4 surface with an interesting morphology as appeared on the surface like spherical particles. The obtained findings revealed that 97% dibenzothiophene (DBT) removal can be achieved under optimized conditions (0.1 g of the catalyst, 1 mL of an oxidant, 100 mg/L DBT-based model fuel, a time duration of 180 min, and a temperature of 40 °C). Additionally, the catalytic activity for real fuel was also investigated in which 89.5 and 91.2% removal efficiencies were achieved for diesel and kerosene, respectively, as well as fuel properties following ASTM specifications. A pseudo first-order kinetic model was followed well for this reaction system, and the negative value of ΔG was due to the spontaneous process. Additionally, the desulfurization study was optimized via a response surface methodology (RSM/Box-Behnken design) for predicting optimum removal of sulfur species by drawing three-dimensional RSM surface plots. The Ni-WO3@g-C3N4 proved to be a promising catalyst for desulfurization of fuel oil by exhibiting reusability of five times with no momentous decrease in efficiency.
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Affiliation(s)
- Muhammad Saeed
- School
of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Mamoona Munir
- Department
of Biological Sciences, International Islamic
University, Islamabad 44000, Pakistan
| | - Azeem Intisar
- School
of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Amir Waseem
- Department
of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
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7
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Synthesis and Characterization of Bi2WxMo1−xO6 Solid Solutions and Their Application in Photocatalytic Desulfurization under Visible Light. Processes (Basel) 2022. [DOI: 10.3390/pr10040789] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Photocatalytic oxidative desulfurization has attracted much attention in recent years due to the continuous tightening of the sulfur content requirements in motor fuels and the disadvantages of the industrial hydrodesulfurization process. This work is devoted to the investigation of the photocatalytic activity of Bi2WxMo1−xO6 solid solutions (x = 1, 0.75, 0.5, 0.25, 0) in the oxidative desulfurization of hydrocarbons under visible light irradiation using hydrogen peroxide as an oxidant. The synthesized photocatalysts were characterized in detail using XRD, SEM, EDS, low-temperature nitrogen adsorption–desorption, and DRS. It was shown that the use of solid solutions Bi2WxMo1−xO6 with x = 0.5–0.75 leads to the complete oxidation of organosulfur compounds to CO2 and H2O within 120 min. The high photocatalytic activity of solid solutions (x = 0.5–0.75) is attributed to their ability to absorb more visible light, the presence of the corner-shared [Mo/WO6] octahedral layers, which may promote the generation and separation of photogenerated charges, and the hierarchical 3D flower-like structure. The reaction mechanism of the desulfurization was also analyzed in this work.
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8
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Zhang J, Mai J, Chen J, Wang X, Mai Y. Selective Catalytic Oxidation of Cyclopentene to Glutaraldehyde over Amorphous Nb
2
O
5
/AC Catalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202103969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Junjie Zhang
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Junhui Mai
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Jiazhi Chen
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Xi Wang
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
| | - Yuliang Mai
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Sciences Guangzhou 510665 People's Republic of China
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9
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Wolski L, Lebedev OI, Harmer CP, Kovnir K, Abdelli H, Grzyb T, Daturi M, El-Roz M. Unraveling the Origin of Photocatalytic Deactivation in CeO 2/Nb 2O 5 Heterostructure Systems during Methanol Oxidation: Insight into the Role of Cerium Species. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:12650-12662. [PMID: 34276865 PMCID: PMC8279704 DOI: 10.1021/acs.jpcc.1c02812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/19/2021] [Indexed: 06/13/2023]
Abstract
The study provides deep insight into the origin of photocatalytic deactivation of Nb2O5 after modification with ceria. Of particular interest was to fully understand the role of ceria species in diminishing the photocatalytic performance of CeO2/Nb2O5 heterostructures. For this purpose, ceria was loaded on niobia surfaces by wet impregnation. The as-prepared materials were characterized by powder X-ray diffraction, nitrogen physisorption, UV-visible spectroscopy, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, and photoluminescence measurements. Photocatalytic activity of parent metal oxides (i.e., Nb2O5 and CeO2) and as-prepared CeO2/Nb2O5 heterostructures with different ceria loadings were tested in methanol photooxidation, a model gas-phase reaction. Deep insight into the photocatalytic process provided by operando-IR techniques combined with results of photoluminescence studies revealed that deactivation of CeO2/Nb2O5 heterostructures resulted from increased recombination of photo-excited electrons and holes. The main factor contributing to more efficient recombination of the charge carriers in the heterostructures was the ultrafine size of the ceria species. The presence of such highly dispersed ceria species on the niobia surface provided a strong interface between these two semiconductors, enabling efficient charge transfer from Nb2O5 to CeO2. However, the ceria species supported on niobia exhibited a high defect site concentration, which acted as highly active recombination centers for the photo-induced charge carriers.
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Affiliation(s)
- Lukasz Wolski
- Faculty
of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego
8, Poznań 61-614, Poland
- Normandie
Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, Caen 14050, France
| | - Oleg I. Lebedev
- Normandie
Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire CRISMAT, Caen 14050, France
| | - Colin P. Harmer
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- U.S.
Department of Energy, Ames Laboratory, Ames, Iowa 50011, United States
| | - Kirill Kovnir
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- U.S.
Department of Energy, Ames Laboratory, Ames, Iowa 50011, United States
| | - Hanen Abdelli
- Normandie
Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, Caen 14050, France
| | - Tomasz Grzyb
- Department
of Rare Earths, Faculty of Chemistry, Adam
Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Marco Daturi
- Normandie
Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, Caen 14050, France
| | - Mohamad El-Roz
- Normandie
Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, Caen 14050, France
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10
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Su K, Liu H, Gao Z, Fornasiero P, Wang F. Nb 2O 5-Based Photocatalysts. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003156. [PMID: 33898172 PMCID: PMC8061393 DOI: 10.1002/advs.202003156] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/23/2020] [Indexed: 05/02/2023]
Abstract
Photocatalysis is one potential solution to the energy and environmental crisis and greatly relies on the development of the catalysts. Niobium pentoxide (Nb2O5), a typically nontoxic metal oxide, is eco-friendly and exhibits strong oxidation ability, and has attracted considerable attention from researchers. Furthermore, unique Lewis acid sites (LASs) and Brønsted acid sites (BASs) are observed on Nb2O5 prepared by different methods. Herein, the recent advances in the synthesis and application of Nb2O5-based photocatalysts, including the pure Nb2O5, doped Nb2O5, metal species supported on Nb2O5, and other composited Nb2O5 catalysts, are summarized. An overview is provided for the role of size and crystalline phase, unsaturated Nb sites and oxygen vacancies, LASs and BASs, dopants and surface metal species, and heterojunction structure on the Nb2O5-based catalysts in photocatalysis. Finally, the challenges are also presented, which are possibly overcome by integrating the synthetic methodology, developing novel photoelectric characterization techniques, and a profound understanding of the local structure of Nb2O5.
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Affiliation(s)
- Kaiyi Su
- State Key Laboratory of Catalysis (SKLC)Dalian National Laboratory for Clean Energy (DNL)Dalian Institute of Chemical Physics (DICP)Chinese Academy of SciencesDalian116023China
- University of Chinese Academy of SciencesBeijing100049China
| | - Huifang Liu
- State Key Laboratory of Catalysis (SKLC)Dalian National Laboratory for Clean Energy (DNL)Dalian Institute of Chemical Physics (DICP)Chinese Academy of SciencesDalian116023China
| | - Zhuyan Gao
- State Key Laboratory of Catalysis (SKLC)Dalian National Laboratory for Clean Energy (DNL)Dalian Institute of Chemical Physics (DICP)Chinese Academy of SciencesDalian116023China
- University of Chinese Academy of SciencesBeijing100049China
| | - Paolo Fornasiero
- Department of Chemical and Pharmaceutical SciencesINSTM ‐ Trieste and ICCOM ‐ CNR TriesteUniversity of TriesteVia L. Giorgieri 1Trieste34127Italy
| | - Feng Wang
- State Key Laboratory of Catalysis (SKLC)Dalian National Laboratory for Clean Energy (DNL)Dalian Institute of Chemical Physics (DICP)Chinese Academy of SciencesDalian116023China
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11
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Efficient catalyst development for deep aerobic photocatalytic oxidative desulfurization: recent advances, confines, and outlooks. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2021. [DOI: 10.1080/01614940.2020.1864859] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Wang L, Li Y, Han P, Jiang Y. Facile fabrication of Fe-doped Nb 2O 5 nanofibers by an electrospinning process and their application in photocatalysis. RSC Adv 2020; 11:462-469. [PMID: 35423069 PMCID: PMC8691001 DOI: 10.1039/d0ra10042k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/08/2020] [Indexed: 01/01/2023] Open
Abstract
It is of top priority to develop highly efficient visible-light photocatalysts to realize the practical applications of photocatalysis in industry. Niobium pentoxide (Nb2O5) is considered as a potentially attractive candidate for the visible-light-driven photodegradation of organic pollutants. In an effort to enhance its photocatalytic activity, Fe-doped Nb2O5 nanofibers with various Fe contents (the molar ratios of Fe to Nb were 0.005/1, 0.01/1, 0.03/1 or 0.05/1) were successfully prepared by an electrospinning method. The structural features, morphologies, and optical properties of the as-prepared samples were investigated. Photocatalytic activities of the samples were evaluated through degradation of Rhodamine B (RhB) under visible light irradiation. All the prepared Fe-doped Nb2O5 nanofibers exhibited much higher activities for degrading RhB solution than the pristine Nb2O5 nanofibers, and the maximum degradation yield of 98.4% was achieved with the nanofibers (Fe to Nb: 0.03/1) under visible light irradiation for 150 min. The photocatalytic degradation rate fitted a pseudo-first-order equation, and the rate constants of reactions with Fe-doped Nb2O5 nanofiber (the molar ratios of Fe to Nb were 0.03/1) or pure Nb2O5 nanofiber were 0.0282 min-1 and 0.0019 min-1, respectively. Doping Fe ions into the nanofibers enhanced the absorption within the visible-light range and reduced the photo-generated electron-hole pair recombination, and thus improved the photocatalytic activity. These attractive properties suggest that the Fe-doped Nb2O5 nanofibers have great potential for applications in the future to solve pollution issues.
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Affiliation(s)
- Lu Wang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
- Nantong Vocational University Nantong 226007 China
| | - Ya Li
- Nantong College of Science and Technology Nantong 226007 China
| | - Pingfang Han
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Yunxia Jiang
- Nantong College of Science and Technology Nantong 226007 China
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13
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Zeng X, Xiao X, Chen J, Wang Y, Wang H. Understanding the effects of co-exposed facets on photocatalytic activities and fuel desulfurization performance in BiOCl singlet-crystalline sheets. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122198. [PMID: 32036310 DOI: 10.1016/j.jhazmat.2020.122198] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 01/08/2020] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
Two kinds of well-crystallized BiOCl singlet-crystalline sheets (BOC-01 with twin-facet co-exposure of {001} and {110} and BOC-02 with tri-facet co-exposure of {001}, {110}, and {010}) were prepared and characterized. The photocatalytic desulfurization performance of BOC-01 and BOC-02 was tested by using n-decane and tetradecane as model oil containing heterocyclic sulfur-containing compounds (benzothiophene, or dibenzothiophene, or 4,6-dimethyldibenzothiophene). The desulfurization performance showed that twin-facet co-exposed BOC-01 had a slightly higher photocatalytic activity than tri-facet co-exposed BOC-02. The differences of photocatalytic activity between BOC-01 and BOC-02 were further explored by paramagnetic resonance spectroscopy, ultraviolet diffuse reflectance spectroscopy, steady-state and time-resolved prompt fluorescencespectra. The results disclosed that the exciton effect in BOC-01 played a key role in photocatalytic activation of molecular oxygen, while BOC-02 mainly produced reactive oxygen species by charge transfer. Theoretical calculations further indicated that the photogenerated electrons are mainly distributed on the {110} facets and the photogenerated holes are mainly distributed on the {001} facets in BOC-01 and BOC-02. This work provides a useful clue for an in-depth understanding of the effects of co-exposed facets in BiOCl on photocatalytic performance.
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Affiliation(s)
- Xingye Zeng
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China; College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Xinyan Xiao
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China.
| | - Jiayi Chen
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China
| | - Yi Wang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China
| | - Hanlu Wang
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China.
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Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo). Catalysts 2020. [DOI: 10.3390/catal10050491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In this work, a new metal-to-metal charge transfer (MMCT) heterogeneous catalyst (Nb–O–Mo) was synthesized by a chemical grafting method under an inert atmosphere. The activity of the covalently anchored oxo-bridged Nb–O–Mo catalyst was estimated for decolorization of Rh B, congo red, and crystal violet dyes in an aqueous solution under fluorescent light. The catalyst was characterized via X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer, Fourier-transform infrared, and FT-Raman. The catalytic decolorization was evaluated from the UV spectra of dyes in aqueous solution by changing different factors, including dye concentration, temperature, and catalyst loading. Decolorization percentages were 83%–89%, 86%–95%, 97%–99% for Rh B, Congo Red and Crystal Violet in 1 min at 298 K, showing the best performance among other catalysts. Decolorization efficiency for 50 ppm of Rh B was improved from 92% to 98%, with a temperature increase to 318 K.
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15
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Mousavi-Kamazani M, Ashrafi S. Single-step sonochemical synthesis of Cu 2O-CeO 2 nanocomposites with enhanced photocatalytic oxidative desulfurization. ULTRASONICS SONOCHEMISTRY 2020; 63:104948. [PMID: 31945578 DOI: 10.1016/j.ultsonch.2019.104948] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 05/27/2023]
Abstract
In this paper, for the first time, composite nanostructures of Cu2O-CeO2 were prepared by a facile and single-step sonochemical method for thiophene photocatalytic oxidative desulfurization. Sonication was performed utilizing a high-intensity ultrasonic probe with a maximum output power of 80 Wcm-3 and operating frequency at 20 kHz. The direct effect of ultrasonic waves on the composition and morphology of the obtained products was also evaluated and it was found that under ultrasonic irradiation, Cu2O-CeO2 can be produced while the main product in the absence of ultrasonic waves is CuO-CeO2. Cu2O-CeO2 exhibits much higher photocatalytic efficiency (84%) than CuO-CeO2 (39%) due to its higher light absorption and electron synergistic effect. The effect of Ce:Cu on photocatalytic efficiency was examined by considering the ratios of 1:0.25, 1:1, 0.5:1, and 0.25:1 and yields of 64, 81, 84, and 76% were obtained, respectively. This indicates that there is an optimal value for the Ce:Cu ratio in the Cu2O-CeO2 nanocomposite.
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16
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Ionothermal Synthesis of Metal Oxide-Based Nanocatalysts and Their Application towards the Oxidative Desulfurization of Dibenzothiophene. J CHEM-NY 2020. [DOI: 10.1155/2020/3894804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Herein, different types of metal-containing ionic liquid (IL) complexes and various metal oxide-based nanocatalysts have been successfully prepared (from ionic liquids) and applied for the oxidative desulfurization (ODS) of dibenzothiophene (DBT). The ILs complexes are comprised of N,N′-dialkylimidazolium salts of the type [RMIM-Cl]2[MCln], where [RMIM+] = 1 alkyl-3-methylimidazolium and M = Mn(II)/Fe(II)/Ni(II)/Co(II). These complexes were prepared using an easy synthetic route by refluxing the methanolic solutions of imidazolium chloride and metal chlorides under facile conditions. The as-prepared complexes were further used as precursors during the ionothermal and chemical synthesis of various metal oxide-based nanocatalysts. The resulting ILs salts and metal oxides NPs have been characterized by FT-IR, TGA, XRD, SEM, and TEM analysis. The results indicate that thermal and chemical treatment of ILs based precursor has produced different phases of metal oxide NPs. The calcination produced α-Fe2O3, Mn3O4, and Co3O4, NPs, whereas the chemical treatment of the ILs salts have led to the production of Fe3O4, Mn2O3, and α-Co(OH)2. All the as-prepared salts and metal oxide-based nanocatalysts were used as catalysts towards ODS of dibenzothiophene. The oxidation of dibenzothiophene was performed at atmospheric conditions using hydrogen peroxide as the oxygen donor. Among various catalysts, the thermally obtained metal oxide NPs such as α-Fe2O3, Mn3O4, and Co3O4, have demonstrated relatively superior catalytic activities compared to the other materials. For example, among these nanocatalysts, α-Fe2O3 has exhibited a maximum conversion (∼99%) of dibenzothiophene (DBT) to dibenzothiophene sulfone (DBTO2).
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Yang P, Zhang ZW, Zou GD, Huang Y, Li N, Fan Y. Template Thermolysis to Create a Carbon Dots-Embedded Mesoporous Titanium-Oxo Sulfate Framework for Visible-Light Photocatalytic Applications. Inorg Chem 2020; 59:2062-2069. [DOI: 10.1021/acs.inorgchem.9b03493] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Pei Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Zong-Wen Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Guo-Dong Zou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yang Huang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Na Li
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yang Fan
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
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Devarayapalli KC, Prabhakar Vattikuti SV, Madhukar Sreekanth TV, Chidanandha Nagajyothi P, Shim J. Pyrolysis‐Synthesized g‐C
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/Nb
2
O
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Nanocomposite for Enhanced Photocatalytic Activity under White LED Light Irradiation. ChemistrySelect 2019. [DOI: 10.1002/slct.201902943] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | - Jaesool Shim
- School of Mechanical EngineeringYeungnam University Gyeongsan- 384541 Republic of Korea
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Zhang J, Jiang T, Mai Y, Wang X, Chen J, Liao B. Selective catalytic oxidation of sulfides to sulfoxides or sulfones over amorphous Nb2O5/AC catalysts in aqueous phase at room temperature. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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A review on recent progression of photocatalytic desulphurization study over decorated photocatalysts. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.02.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Rong F, Wang Q, Lu Q, Yao L, Wei M. Rational Fabrication of Hierarchical Z‐Scheme WO
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Nanotubes for Superior Photoelectrocatalytic Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201803620] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Feng Rong
- Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional CeramicsSchool of Material Science and EngineeringQilu University of Technology (Shandong Academy of Sciences), Jinan 250353 P. R. China
| | - Qinyu Wang
- Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional CeramicsSchool of Material Science and EngineeringQilu University of Technology (Shandong Academy of Sciences), Jinan 250353 P. R. China
| | - Qifang Lu
- Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional CeramicsSchool of Material Science and EngineeringQilu University of Technology (Shandong Academy of Sciences), Jinan 250353 P. R. China
| | - Linbing Yao
- Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional CeramicsSchool of Material Science and EngineeringQilu University of Technology (Shandong Academy of Sciences), Jinan 250353 P. R. China
| | - Mingzhi Wei
- Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional CeramicsSchool of Material Science and EngineeringQilu University of Technology (Shandong Academy of Sciences), Jinan 250353 P. R. China
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Riente P, Noël T. Application of metal oxide semiconductors in light-driven organic transformations. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01170f] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Herein, we provide an up-to-date overview of metal oxide semiconductors (MOS) as versatile and inexpensive photocatalysts to enable light-driven organic transformations.
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Affiliation(s)
- Paola Riente
- Micro Flow Chemistry and Synthetic Methodology
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
| | - Timothy Noël
- Micro Flow Chemistry and Synthetic Methodology
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
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