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Ahmad Shah SN, Zulfiqar S, Ruipérez F, Rafique M, Iqbal M, Forrester MJ, Sarwar Late MI, Cochran EW. An integrated experimental and theoretical approach to probe Cr(vi) uptake using decorated halloysite nanotubes for efficient water treatment. RSC Adv 2024; 14:2947-2960. [PMID: 38239454 PMCID: PMC10794904 DOI: 10.1039/d3ra07675j] [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: 11/09/2023] [Accepted: 01/08/2024] [Indexed: 01/22/2024] Open
Abstract
Halloysite nanotubes (HNTs) were surface functionalized using four distinct chemical moieties (amidoxime, hydrazone, ethylenediamine (EDA), and diethylenetriamine (DETA)), producing modified HNTs (H1-H4) capable of binding with Cr(vi) ions. Advanced techniques like FTIR, XRD, SEM, and EDX provided evidence of the successful functionalization of these HNTs. Notably, the functionalization occurred on the surface of HNTs, rather than within the interlayer or lumen. These decorated HNTs were effective in capturing Cr(vi) ions at optimized sorption parameters, with adsorption rates ranging between 58-94%, as confirmed by atomic absorption spectroscopy (AAS). The mechanism of adsorption was further scrutinized through the Freundlich and Langmuir isotherms. Langmuir isotherms revealed the nearest fit to the data suggesting the monolayer adsorption of Cr(vi) ions onto the nanotubes, indicating a favorable adsorption process. It was hypothesized that Cr(vi) ions are primarily attracted to the amine groups on the modified nanotubes. Quantum chemical calculations further revealed that HNTs functionalized with hydrazone structures (H2) demonstrated a higher affinity (interaction energy -26.33 kcal mol-1) for the Cr(vi) ions. This can be explained by the formation of stronger hydrogen bonds with the NH moieties of the hydrazone moiety, than those established by the OH of oxime (H1) and longer amine chains (H3 and H4), respectively. Overall, the findings suggest that these decorated HNTs could serve as an effective and cost-efficient solution for treating water pollution.
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Affiliation(s)
- Syed Nadeem Ahmad Shah
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology H-12 Islamabad 44000 Pakistan
| | - Sonia Zulfiqar
- Department of Chemistry, Faculty of Science, University of Ostrava 30. Dubna 22 Ostrava 701 03 Czech Republic
- Department of Chemical and Biological Engineering, Iowa State University Sweeney Hall, 618 Bissell Road, Ames Iowa 50011 USA
| | - Fernando Ruipérez
- POLYMAT, Physical Chemistry Department, Faculty of Pharmacy, University of the Basque Country UPV/EHU 01006 Vitoria-Gasteiz Spain
| | - Muhammad Rafique
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Mudassir Iqbal
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology H-12 Islamabad 44000 Pakistan
| | - Michael J Forrester
- Department of Chemical and Biological Engineering, Iowa State University Sweeney Hall, 618 Bissell Road, Ames Iowa 50011 USA
| | | | - Eric W Cochran
- Department of Chemical and Biological Engineering, Iowa State University Sweeney Hall, 618 Bissell Road, Ames Iowa 50011 USA
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Zhang H, Wang L, Liu Z, Su Y, Du C. Construction of novel photocatalysts for efficient hydrogen evolution: The key role of natural halloysite nanotubes. J Colloid Interface Sci 2023; 650:1211-1224. [PMID: 37478738 DOI: 10.1016/j.jcis.2023.07.094] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/28/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Hydrogen (H2) evolution by photocatalytic water splitting is a potential strategy to solve worldwide energy shortage. Sulfide nanocatalysts showed great potential for H2 evolution, but suffered from low charge separation efficiency and easy agglomeration. In this work, ZnIn2S4 (ZIS) nanoflowers were anchored onto the surface of halloysite nanotubes (HNTs) modified by ethylenediaminetetraacetic acid (EDTA). Photocatalyst 3ZnIn2S4-HNTs/EDTA3 (3ZIS-HNTs/E3) displayed the optimum H2 evolution rate of 10.4 mmol·g-1·h-1, being 3.4 times as that of the original ZIS. Moreover, 3ZIS-HNTs/E3 presented satisfied property in the photocatalytic hydrogenation reaction of 4-nitrophenol to produce 4-aminophenol. HNTs as substrates not only hindered the growth and agglomeration of ZIS, but also induced more S vacancies in ZIS. The production of Schottky junctions between ZIS and Pt, the high utilization of light energy in tubular HNTs, and the trapping effect of EDTA for photogenerated h+ were all favorable for enhancing the catalytic property. The density functional theory (DFT) calculations showed that 3ZIS-HNTs/E3 with more S vacancies had the lowest adsorption energy and the most appropriate ΔGH* for H* to enhance the H2 evolution efficiency, which was consistent with the experimental catalytic results. This study contributes a novel thought for synthesizing composites on the basis of natural minerals for taking part in and enhancing the catalytic performance.
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Affiliation(s)
- Hao Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Le Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Zhiliang Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China.
| | - Chunfang Du
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China.
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Wolski R, Bazan-Wozniak A, Pietrzak R. Adsorption of Methyl Red and Methylene Blue on Carbon Bioadsorbents Obtained from Biogas Plant Waste Materials. Molecules 2023; 28:6712. [PMID: 37764488 PMCID: PMC10534305 DOI: 10.3390/molecules28186712] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
In this study, biocarbon was obtained from the waste material corn digest. Carbon adsorbents were obtained by physical activation of the precursor with CO2. Detailed physicochemical characterization of the biocarbon was carried out using low-temperature nitrogen adsorption/desorption, Boehm titration, zero-charge point (pHpzc) and iodine number. In addition, the sorption capacity of the biocarbon agents towards an aqueous solution of methylene blue and methyl red was determined, and the kinetics of the adsorption process were determined. The biocarbon adsorbents were characterized by an average developed specific surface area covering the range from 320 to 616 m2/g. The sorption capacity of the biocarbon adsorbents against methylene blue ranged from 40 mg/g to 146 mg/g, and for methyl red it covered the range from 31 mg/g to 113 mg/g. It was shown that the efficiency of organic dye removal by the obtained biocarbons depends on the initial concentration of the adsorbate solution, its mass, shaking rate, adsorbent-adsorbate contact time and temperature. The results obtained from the Langmuir and Freundlich kinetic models showed that the Langmuir model is the most suitable model for describing the adsorption of the studied pollutants on biocarbon. In turn, the adsorption kinetics of dyes is described according to the pseudo-second-order model. Adsorption studies also showed that as the process temperature increases, the removal efficiency of methylene blue and methyl red increases.
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Affiliation(s)
| | | | - Robert Pietrzak
- Department of Applied Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (R.W.); (A.B.-W.)
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Wang YX, Cui YY, Zhang Y, Yang CX. Synthesis of reusable and renewable microporous organic networks for the removal of halogenated contaminants. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127485. [PMID: 34655878 DOI: 10.1016/j.jhazmat.2021.127485] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/22/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Microporous organic networks (MONs) have shown great potential in the removal of environmental contaminants. However, all studies have focused on the design and construction of novel and efficient adsorbents, and the recycling and reuse of adsorbates were disregarded. In this study, we report a feasible approach to synthesize renewable and reusable MONs by using target halogenated contaminants such as tetrabromobisphenol A (TBBPA), 2,3-dichlorophenol (2,3-DCP), and 2,4,6-trichlorophenol (2,4,6-TCP) as starting monomers. TBBPA, 2,3-DCP, and 2,4,6-TCP acted as hazardous contaminants and starting monomers for MONs, leading to the recycling of both adsorbents and adsorbates. The obtained TBBPA-MON, 2,3-DCP-MON, and 2,4,6-TCP-MON not only offered good reusability and large adsorption capacity for their elimination but also provided good adsorption for other phenolic contaminants relying on multiple interactions. Density functional theory calculation indicated the dominant role of π-π and hydrophobic interactions and the secondary role of hydrogen bonding interactions during the adsorption process. The used TBBPA-MON could be reused and the eluted TBBPA could be recycled and renewed for the construction of fresh MONs. This study provided a feasible approach to design and synthesize renewable MONs for environmental contaminants.
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Affiliation(s)
- Yi-Xuan Wang
- College of Chemistry, Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, China
| | - Yuan-Yuan Cui
- School of Pharmaceutical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China
| | - Yan Zhang
- College of Chemistry, Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, China
| | - Cheng-Xiong Yang
- College of Chemistry, Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, China; School of Pharmaceutical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
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He XQ, Cui YY, Zhang Y, Li HT, Yang CX. Decoration of Fe3+ on carboxyl microporous organic network to fabricate magnetic porous carbon for efficient adsorption and removal of cationic dyes. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100092] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Bu J, Yuan L, Ren Y, Lv Y, Meng Y, Peng X. Enhanced removal of Eriochrome Black T in wastewater by zirconium-based MOF/graphene oxide. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0368] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The zirconium-based MOF/graphene oxide (UiO-66-NH2/GO) composites were prepared by ultrasonic dispersing different amounts of graphene oxide (GO) in a well-dissolved zirconium tetrachloride/H2BDC-NH2 mixture, obtaining 2 wt% (UiO-66-NH2/GO-1), 5 wt% (UiO-66-NH2/GO-2), and 10 wt% (UiO-66-NH2/GO-3) GO composites. The products were characterized by XRD, FTIR, SEM, BET, Raman, UV, XPS, and Zeta potential. Adsorption experiments on simulated Eriochrome Black T (EBT) printing and dyeing wastewater were carried out using UiO-66-NH2/GO, and the optimal conditions for adsorption were obtained by exploring the effects of initial EBT concentration, time, pH, and salt ionic strength. Adsorption isotherms, kinetics, mechanism, and regeneration were also researched. The adsorption behavior was consistent with the Langmuir isotherm and fully compliant with pseudo secondary dynamics model. The adsorption capacity of UiO-66-NH2/GO-2 was found to be the highest of the three products, which was 263.158 mg/g. Therefore, the UiO-66-NH2/GO-2 composite was considered to be an excellent adsorbent for the adsorption of EBT from organic dye wastewater.
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Affiliation(s)
- Jiaqi Bu
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
| | - Lu Yuan
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
- National & Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Changsha 410081, P.R. China
- Key Laboratory of Sustainable Resources Processing and Advanced Materials, Hunan Province College, Changsha 410081, P.R. China
- Research Center of Resource Recycling Complex Technology, Hunan Normal University, Changsha 410081, P.R. China
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Hunan Normal University, Ministry of Education, Changsha 410081, P.R. China
| | - Yanling Ren
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
| | - Yuexin Lv
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
| | - Yong Meng
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
- National & Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Changsha 410081, P.R. China
- Key Laboratory of Sustainable Resources Processing and Advanced Materials, Hunan Province College, Changsha 410081, P.R. China
- Research Center of Resource Recycling Complex Technology, Hunan Normal University, Changsha 410081, P.R. China
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Hunan Normal University, Ministry of Education, Changsha 410081, P.R. China
| | - Xin Peng
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R. China
- National & Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources, Changsha 410081, P.R. China
- Key Laboratory of Sustainable Resources Processing and Advanced Materials, Hunan Province College, Changsha 410081, P.R. China
- Research Center of Resource Recycling Complex Technology, Hunan Normal University, Changsha 410081, P.R. China
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Hunan Normal University, Ministry of Education, Changsha 410081, P.R. China
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