1
|
El-Sawaf AK, Nassar AA, Tolan DA, Ismael M, Alhindawy I, M El-Desouky E, El-Nahas A, Shahien M, Maize M. A mesoporous Mo and N Co-doped TiO 2 nanocomposite with enhanced photocatalytic efficiency. RSC Adv 2024; 14:3536-3547. [PMID: 38259997 PMCID: PMC10801452 DOI: 10.1039/d3ra07258d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
This study reports the synthesis of a mesoporous Mo and N codoped anatase TiO2 nanocomposite with many oxygen vacancies using a simple one-step hydrothermal method and subsequent calcination treatment. Both Mo and N were effectively co-incorporated into the anatase phase of TiO2 without MoOx phase segregation. The codoped catalyst demonstrated a mesoporous architecture with a surface area of 107.48 m2 g-1 and a pore volume of 0.2974 cm3 g-1. X-ray photoelectron spectroscopy confirmed that both Mo and N dissolved in the TiO2 lattice and created induced oxygen vacancies. The interaction of the dopants (Mo and N) and oxygen vacancies clearly affected TiO2 crystal formation. Photocatalytic performance of the nanocomposite was investigated in terms of the decomposition of methyl orange at a concentration of 50 mg L-1 in an aqueous solution. The results revealed a significant methyl orange degradation of up to 99.6% after 30 min irradiation under a UV light. The impressive performance of the nanocomposite is assigned to the synergetic effect of important factors, including the co-doping of metallic (Mo) and non-metallic (N) elements, oxygen vacancy defects, bandgap, crystallite size, mesoporous structure, and BET surface area.
Collapse
Affiliation(s)
- Ayman K El-Sawaf
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
| | - Dina A Tolan
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | | | | | - Ahmed El-Nahas
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Mohammed Shahien
- Central Metallurgical Research & Development Institute (CMRDI) Helwan 11421 Egypt
| | - Mai Maize
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| |
Collapse
|
2
|
Tolan DA, El-Sawaf AK, Alhindawy IG, Ismael MH, Nassar AA, El-Nahas AM, Maize M, Elshehy EA, El-Khouly ME. Effect of bismuth doping on the crystal structure and photocatalytic activity of titanium oxide. RSC Adv 2023; 13:25081-25092. [PMID: 37622010 PMCID: PMC10445215 DOI: 10.1039/d3ra04034h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
The doping of TiO2 with metals and non-metals is considered one of the most significant approaches to improve its photocatalytic efficiency. In this study, the photodegradation of methyl orange (MO) was examined in relation to the impact of Bi-doping of TiO2. The doped TiO2 with various concentrations of metal was successfully synthesized by a one-step hydrothermal method and characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), and UV-vis spectroscopy. The XRD results revealed that the anatase phase, with an average crystallite size of 16.2 nm, was the main phase of TiO2. According to the anatase texture results, it was found that the doping of TiO2 increased the specific surface area for Bi2O3@TiO2 without a change in the crystal structure or the crystal phase of TiO2. Also, XPS analysis confirmed the formation of Ti4+ and Ti3+ as a result of doping with Bi. The activities of both pure TiO2 and Bi-doped TiO2 were tested to study their ability to decolorize MO dye in an aqueous solution. The photocatalytic degradation of MO over Bi2O3@TiO2 reached 98.21%, which was much higher than the 42% achieved by pure TiO2. Doping TiO2 with Bi increased its visible-light absorption as Bi-doping generated a new intermediate energy level below the CB edge of the TiO2 orbitals, causing a shift in the band gap from the UV to the visible region, thus enhancing its photocatalytic efficiency. In addition, the effects of the initial pH, initial pollutant concentration, and contact time were examined and discussed.
Collapse
Affiliation(s)
- Dina A Tolan
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Ayman K El-Sawaf
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | | | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
| | - Ahmed M El-Nahas
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Mai Maize
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | - Mohamed E El-Khouly
- Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology (E-JUST) Alexandria 21934 Egypt
| |
Collapse
|
3
|
A novel pH-Dependent sensor for recognition of strontium ions in water: A hierarchically structured mesoporous architectonics. Talanta 2022. [DOI: 10.1016/j.talanta.2022.124064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
4
|
Bakhotmah DA, Hussein MA, El-Said W, Ismael MH, Elshehy E. Efficient removal of cesium and strontium from an aqueous solution using a zirconosilicate/vanadium oxide nanocomposite. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2048005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dina A. Bakhotmah
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mahmoud A. Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Waleed El-Said
- Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | | | | |
Collapse
|
5
|
El-Magied MOA, Fatah AILAE, Mashaal H, Tawfique A, Alhindawy IG, Manaa ESA, Elshehy EA. Fabrication of Worm-Like Mesoporous Silica Monoliths as an Efficient Sorbent for Thorium Ions from Nitrate Media. RADIOCHEMISTRY 2022; 64:62-73. [DOI: 10.1134/s1066362222010106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 09/01/2023]
|
6
|
Tolan DA, Elshehy EA, El-Said WA, Taketsugu T, Yoshizawa K, El-Nahas AM, Kamali AR, Abdelkader AM. Cubically cage-shaped mesoporous ordered silica for simultaneous visual detection and removal of uranium ions from contaminated seawater. Mikrochim Acta 2021; 189:3. [PMID: 34855016 DOI: 10.1007/s00604-021-05083-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022]
Abstract
A dual-function organic-inorganic mesoporous structure is reported for naked-eye detection and removal of uranyl ions from an aqueous environment. The mesoporous sensor/adsorbent is fabricated via direct template synthesis of highly ordered silica monolith (HOM) starting from a quaternary microemulsion liquid crystalline phase. The produced HOM is subjected to further modifications through growing an organic probe, omega chrome black blue G (OCBBG), in the cavities and on the outer surface of the silica structure. The spectral response for [HOM-OCBBG → U(VI)] complex shows a maximum reflectance at λmax = 548 nm within 1 min response time (tR); the LOD is close to 9.1 μg/L while the LOQ approaches 30.4 μg/L, and this corresponds to the range of concentration where the signal is linear against U(VI) concentration (i.e., 5-1000 μg/L) at pH 3.4 with standard deviation (SD) of 0.079 (RSD% = 11.7 at n = 10). Experiments and DFT calculations indicate the existence of strong binding energy between the organic probe and uranyl ions forming a complex with blue color that can be detected by naked eyes even at low uranium concentrations. With regard to the radioactive remediation, the new mesoporous sensor/captor is able to reach a maximum capacity of 95 mg/g within a few minutes of the sorption process. The synthesized material can be regenerated using simple leaching and re-used several times without a significant decrease in capacity.
Collapse
Affiliation(s)
- Dina A Tolan
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj, 11942, Saudi Arabia.,Chemistry Department, Faculty of Science, Menoufia University, Menoufia, Egypt
| | | | - Waleed A El-Said
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt.,Department of Chemistry, College of Science, University of Jeddah, P.O. Box 80327, Jeddah, 21589, Saudi Arabia
| | - Tetsuya Taketsugu
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, 060-0810, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Ahmed M El-Nahas
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj, 11942, Saudi Arabia
| | - Ali Reza Kamali
- Energy and Environmental Materials Research Centre (E2MC), School of Metallurgy, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Amr M Abdelkader
- Department of Engineering, Bournemouth University, Talbot Campus, Fern Barrow, Poole, BH12 5BB, UK.
| |
Collapse
|
7
|
Gendy EA, Oyekunle DT, Ali J, Ifthikar J, El-Motaleb Mosad Ramadan A, Chen Z. High-performance removal of radionuclides by porous organic frameworks from the aquatic environment: A review. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2021; 238-239:106710. [PMID: 34481100 DOI: 10.1016/j.jenvrad.2021.106710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Dealing with unwanted nuclear waste is still a serious issue from the point of view of humans and the environment because of its harmful and dangerous effects. Recently, porous organic frameworks (POFs) have gained an increasing concern as effective materials in the removal of various types of hazardous metal ions, especially radioactive metal ions. POFs are a unique class that included covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) with strong covalent bonds, large surface area, high adsorption capacity, tunable porosity, and a porous structure with more efficient than conventional adsorbents. This review highlights the recent developments of POFs for the rapid elimination of radionuclide. The unique characteristics, adsorption properties, and interaction mechanisms between radioactive metal ions and the POF-based materials are summarized. Also, prospects for enhancing the performance of POFs to capture radioactive metal ions are discussed.
Collapse
Affiliation(s)
- Eman Abdelnasser Gendy
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China; Chemistry Department, Faculty of Science, Kafrelsheikh University, El-Geish Street, P.O. Box 33516, Kafrelsheikh, Egypt
| | - Daniel Temitayo Oyekunle
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Jawad Ali
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Jerosha Ifthikar
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
| | - Abd El-Motaleb Mosad Ramadan
- Chemistry Department, Faculty of Science, Kafrelsheikh University, El-Geish Street, P.O. Box 33516, Kafrelsheikh, Egypt
| | - Zhuqi Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
| |
Collapse
|
8
|
Elshehy EA. Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Emad A. Elshehy
- Nuclear Materials Authority (NMA) P.O. Box 530, El-Maadi 11728 Cairo Egypt
| |
Collapse
|
9
|
Abdelmageed N, El‐Said WA, Younes AA, Atrees MS, Farag AB, Elshehy EA, Abdelkader AM. Facile synthesis of
silica‐polymer
monoliths using nonionic triblock copolymer surfactant for efficient removal of radioactive pollutants from contaminated seawater. J Appl Polym Sci 2021. [DOI: 10.1002/app.51263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nada Abdelmageed
- Department of Chemistry, Faculty of Science Helwan University Cairo Egypt
| | - Waleed A. El‐Said
- Department of Chemistry, Faculty of Science Assiut University Assiut Egypt
- University of Jeddah, College of Science Department of Chemistry Jeddah Saudi Arabia
| | - Ahmed A. Younes
- Department of Chemistry, Faculty of Science Helwan University Cairo Egypt
| | - Mohamed S. Atrees
- Materials of Reactors Department Nuclear Materials Authority El‐Maad Cairo Egypt
| | | | - Emad A. Elshehy
- Materials of Reactors Department Nuclear Materials Authority El‐Maad Cairo Egypt
| | - Amr M. Abdelkader
- Department of Engineering Bournemouth University, Talbot Campus, Fern Barrow Poole UK
| |
Collapse
|
10
|
Abdel-Galil EA, Tourky AS, Kasem AE. Sorption of some radionuclides from nuclear waste effluents by polyaniline/SiO 2 composite: Characterization, thermal stability, and gamma irradiation studies. Appl Radiat Isot 2020; 156:109009. [PMID: 32056689 DOI: 10.1016/j.apradiso.2019.109009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/20/2019] [Accepted: 11/25/2019] [Indexed: 01/09/2023]
Abstract
Polyaniline/SiO2 composite was successfully prepared via in situ polymerization using polyvinyl alcohol as a surfactant. The prepared PAn/SiO2 composite was used for the removal of Zr(IV), U(VI), and Mo(VI) ions from their liquid solutions. PAn/SiO2 composite was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The synthesized composite was irradiated with γ-radiation from a Co-60 radioactive source with absorbed dose 50, 100, and 150 kGy and the corresponding changes in structural properties of the composites were studied. The thermal and radiation stabilities of PAn/SiO2 composite in terms of saturation capacities were studied. PAn/SiO2 composite has a good thermal stability as it retained about 78.83% of its saturation capacity upon heating at 400±1 °C, while the saturation capacity of PAn/SiO2 composite was increased from 191.28 to 319.16 mg/g for Zr(IV) with varying the irradiated doses from 0 to 150 kGy. The sorption studies for several metal ions revealed marked selectivity of PAn/SiO2 composite towards Zr(IV), U(VI), and Mo(VI) ions with selectivity order; Zr(IV) > U(VI) > Mo(VI). The results indicated that PAn/SiO2 composite removed 95.33, 75.97, and 52.87% from Zr(IV), U(VI), and Mo(VI) ions, respectively at pH 3.26. Hence, analytical utility of PAn/SiO2 composite was accomplished by performing some quantitative separation such as separation of U(VI) ions from monazite leachate and separation of Zr(IV), U(VI), and Mo(VI) ions from simulated liquid waste. Thermodynamic parameter studies concluded that the adsorption of Zr(IV), U(VI), and Mo(VI) ions was spontaneous and endothermic in nature.
Collapse
Affiliation(s)
- E A Abdel-Galil
- Hot Laboratories and Waste Management Center, Atomic Energy Authority, 13759, Cairo, Egypt.
| | - A S Tourky
- Faculty of Science, Girls Branch, Al-Azhar University, Cairo, Egypt
| | - A E Kasem
- Hot Laboratories and Waste Management Center, Atomic Energy Authority, 13759, Cairo, Egypt
| |
Collapse
|
11
|
Fabrication of Mesoporous NaZrP Cation-Exchanger for U(VI) Ions Separation from Uranyl Leach Liquors. COLLOIDS AND INTERFACES 2019. [DOI: 10.3390/colloids3040061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
As the demand for uranium production-based energy worldwide has been increasing in the last decades to maintain nuclear growth for electricity production, there are great efforts towards developing an easy and inexpensive method for uranium extraction and separation from its ores. For this purpose, mesoporous inorganic cation exchangers provide an efficient separation technology that can help streamline production and lower overall cost. This study describes the development of nano-structured mesoporous sodium zirconium phosphate (NaZrP-CEX) for separation and extraction of uranyl ions from real samples. The fabricated NaZrP-CEX was well characterized by various techniques such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), Scanning Electron Microscope (SEM), N2 adsorption/desorption, Dynamic light scattering (DLS) and zeta potential). The kinetics/thermodynamic behaviors of uranyl ion adsorption into NaZrP-CEX from an aqueous solution were minutely studied. The kinetic studies showed that the pseudo-second order model gave a better description for the uptake process. The negative value of ΔG indicate high feasibility and spontaneity of adsorption. Finally, mesoporous NaZrP-CEX can be regenerated using both of HNO3 (0.05 M) or HCl (1 M) up to seven cycles of operation.
Collapse
|
12
|
Atia BM, Gado MA, Abd El-Magied MO, Elshehy EA. Highly efficient extraction of uranyl ions from aqueous solutions using multi-chelators functionalized graphene oxide. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1650769] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Bahig M. Atia
- Research Sector, Nuclear Materials Authority, Cairo, Egypt
| | | | | | - Emad A. Elshehy
- Production Sector, Nuclear Materials Authority, Cairo, Egypt
| |
Collapse
|
13
|
Preparation of a magnetic reduced-graphene oxide/tea waste composite for high-efficiency sorption of uranium. Sci Rep 2019; 9:6471. [PMID: 31015484 PMCID: PMC6478863 DOI: 10.1038/s41598-019-42697-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 04/05/2019] [Indexed: 12/30/2022] Open
Abstract
The preparation and application of adsorptive materials with low cost and high-efficiency recovery of uranium from nuclear waste is necessary for the development of sustainable, clean energy resources and to avoid nuclear pollution. In this work, the capacity of tea waste and tea waste hybrids as inexpensive sorbents for uranium removal from water solutions was investigated. Composites of graphene oxide (GO) and tea waste (TW) exhibited a promising adsorption performance for uranium from aqueous solutions. The composites GOTW and magnetic rGO/Fe3O4/TW show high adsorption capacities (Qm (TW) = 91.72 mg/g, Qm (GOTW) = 111.61 mg/g and Qm (rGO/Fe3O4/TW) = 104.95 mg/g) and removal rates (~99%) for U(VI). The equilibrium sorption of the adsorbents fitted well to the Langmuir model, and the sorption rate fitted well to a pseudo-second-order kinetic model. The thermodynamic parameters indicated that sorption was spontaneous and favourable. The prepared adsorbents were used for the removal of uranium from real water samples as well. The results revealed that GOTW and rGO/Fe3O4/TW can be used to remediate nuclear industrial effluent as a potential adsorbent.
Collapse
|
14
|
Yang A, Li P, Zhong J. Facile preparation of low-cost HKUST-1 with lattice vacancies and high-efficiency adsorption for uranium. RSC Adv 2019; 9:10320-10325. [PMID: 35520892 PMCID: PMC9062383 DOI: 10.1039/c9ra01427f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/26/2019] [Indexed: 01/20/2023] Open
Abstract
In this work, we prepared HKUST-1 and HKUST-1 with lattice vacancies (HLV) using benzoic acid (BA) as a low-cost modulator to replace part of the traditional trimesic acid ligand (H3BTC). The structure and morphology of the products were characterized by FTIR, XRD, SEM and XPS. The adsorption performance of the products for uranium from aqueous solutions was investigated. The results showed that the sorption of U(vi) on HKUST-1 and HLV agreed with the Langmuir isotherm model (R HKUST-1 2 = 0.9867 and R HLV 2 = 0.9828) and the maximum adsorption capacity was 430.98 mg g-1 and 424.88 mg g-1, respectively. According to kinetics studies, the adsorption fitted better with a pseudo-second-order model (R HKUST-1 2 = 1.0000 and R HLV 2 = 0.9978). The as-prepared adsorbents were used for the removal of uranium from real water samples as well. The results showed that HLV with lower cost is a promising adsorbent for uranium from aqueous solutions.
Collapse
Affiliation(s)
- Aili Yang
- Institute of Materials, China Academy of Engineering Physics Huafeng Xincun No. 9 Mail-box 9071-7 Jiangyou 621900 China
| | - Ping Li
- Institute of Materials, China Academy of Engineering Physics Huafeng Xincun No. 9 Mail-box 9071-7 Jiangyou 621900 China
| | - Jingrong Zhong
- Institute of Materials, China Academy of Engineering Physics Huafeng Xincun No. 9 Mail-box 9071-7 Jiangyou 621900 China
| |
Collapse
|
15
|
|