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Zeng G, Mao J, Xing H, Xu Z, Cao Z, Kang Y, Liu G, Xue P. Gold Nanodots-Anchored Cobalt Ferrite Nanoflowers as Versatile Tumor Microenvironment Modulators for Reinforced Redox Dyshomeostasis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2406683. [PMID: 38984397 DOI: 10.1002/advs.202406683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Indexed: 07/11/2024]
Abstract
Given that tumor microenvironment (TME) exerts adverse impact on the therapeutic response and clinical outcome, robust TME modulators may significantly improve the curative effect and increase survival benefits of cancer patients. Here, Au nanodots-anchored CoFe2O4 nanoflowers with PEGylation (CFAP) are developed to respond to TME cues, aiming to exacerbate redox dyshomeostasis for efficacious antineoplastic therapy under ultrasound (US) irradiation. After uptake by tumor cells, CFAP with glucose oxidase (GOx)-like activity can facilitate glucose depletion and promote the production of H2O2. Multivalent elements of Co(II)/Co(III) and Fe(II)/Fe(III) in CFAP display strong Fenton-like activity for·OH production from H2O2. On the other hand, energy band structure CFAP is superior for US-actuated 1O2 generation, relying on the enhanced separation and retarded recombination of e-/h+ pairs. In addition, catalase-mimic CFAP can react with cytosolic H2O2 to generate molecular oxygen, which may increase the product yields from O2-consuming reactions, such as glucose oxidation and sonosensitization processes. Besides the massive production of reactive oxygen species, CFAP is also capable of exhausting glutathione to devastate intracellular redox balance. Severe immunogenic cell death and effective inhibition of solid tumor by CFAP demonstrates the clinical potency of such heterogeneous structure and may inspire more relevant designs for disease therapy.
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Affiliation(s)
- Guicheng Zeng
- School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Jinning Mao
- Health Management Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Haiyan Xing
- School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Zhigang Xu
- School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Zhong Cao
- School of Biomedical Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Yuejun Kang
- School of Materials and Energy, Southwest University, Chongqing, 400715, China
| | - Guodong Liu
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Peng Xue
- School of Materials and Energy, Southwest University, Chongqing, 400715, China
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2
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Bagus PS, Nelin CJ, Schacherl B, Vitova T. Actinyl Electronic Structure Probed by XAS: The Role of Many-Body Effects. Inorg Chem 2024. [PMID: 38980170 DOI: 10.1021/acs.inorgchem.4c00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
A detailed analysis of the wave functions for the M5 to 5f excitations in the linear actinyls, UO22+, NpO22+, and PuO22+, and the theoretical X-ray absorption spectra obtained with these wave functions in comparison with experimental M5-edge high-resolution X-ray absorption near-edge structure (HR-XANES) spectra is presented. The wave functions include full treatment of scalar and spin-orbit relativistic effects through the use of a Dirac-Coulomb Hamiltonian; many-body effects are included in determining the wave functions. The character of the excited states and of the active spaces to describe the wave functions for these states are investigated and analyzed. It is shown that the excited states cannot, in general, be described with a single configuration but have an essential multiconfiguration character. The characterization of the properties of the excited states and the X-ray absorption spectra was achieved through the use of novel methods.
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Affiliation(s)
- Paul S Bagus
- Department of Chemistry, University of North Texas, Denton, Texas 76203-5017, United States
| | | | - Bianca Schacherl
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. 3640, D-76021 Karlsruhe, Germany
| | - Tonya Vitova
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. 3640, D-76021 Karlsruhe, Germany
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3
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Chen H, Han C, Zhang L, Wu Y. Porous rod-shaped Fe 2O 3/Ag/BP: a novel substrate for highly sensitive SERS detection of persistent organic pollutants. NANOTECHNOLOGY 2024; 35:195710. [PMID: 38330462 DOI: 10.1088/1361-6528/ad27ab] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 02/08/2024] [Indexed: 02/10/2024]
Abstract
A surface enhanced Raman scattering (SERS) substrate of porous rod-shaped ferric oxide (Fe2O3) combined with silver nanoparticles (Ag NPs) and black phosphorus (Fe2O3/Ag/BP) was fabricated to detect the persistent organic pollutants (POPs) at low concentration. The organic pollutant Rhodamine 6G (R6G) was used as the probe molecule to study the performances of Fe2O3/Ag/BP, and 4-chlorobiphenyl (PCB-3) was the target of detection. The limit of detection (LOD) of R6G based on this novel SERS substrate Fe2O3/Ag/BP was as low as 1.0 × 10-15M, which was five orders of magnitude lower than that of Fe2O3/Ag (10-10M). The enhancement factor (EF) of Fe2O3/Ag/BP was 6.44 × 108, which was 3.1 times higher than that of porous rod-shaped Fe2O3/Ag (2.08 × 108). The Raman signal of R6G based on Fe2O3/Ag/BP had a good homogeneity, and the relative standard deviation (RSD) of Raman signal intensities of R6G at 1643 cm-1was only 5.97%. Furthermore, the Fe2O3/Ag/BP substrate exhibited a recyclability through the photocatalytic degradation of R6G. The LOD of PCB-3 based on Fe2O3/Ag/BP was 10-9M. Besides, Fe2O3/Ag/BP had a high SERS activity even it was kept in a centrifuge tube without requiring complicated treatment. These results highlight the potential application of Fe2O3/Ag/BP for ultra-trace detection of POPs in the environment.
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Affiliation(s)
- Hang Chen
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
- Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou 221400, People's Republic of China
| | - Caiqin Han
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
| | - Le Zhang
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
- Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou 221400, People's Republic of China
| | - Ying Wu
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
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4
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Sousa C, Bagus PS, Illas F. Theoretical Prediction of Core-Level Binding Energies: Analysis of Unexpected Errors. J Phys Chem A 2024; 128:895-901. [PMID: 38271996 PMCID: PMC10860126 DOI: 10.1021/acs.jpca.3c07567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/27/2024]
Abstract
The analysis of the C(1s) and O(1s) core-level binding energies (CLBEs) of selected molecules computed by means of total energy Hartree-Fock (ΔSCF-HF) differences shows that in some cases, the calculated values for the C(1s) are larger than the experiment, which is unexpected. The origin of these unexpected errors of the Hartree-Fock ΔSCF BEs is shown to arise from static, nondynamical, electron correlation effects which are larger for the ion than for the neutral system. Once these static correlation effects are included by using complete active space self-consistent field (CASSCF) wave functions that include internal correlation terms, the resulting ΔSCF BEs are, as expected, smaller than measured values.
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Affiliation(s)
- Carmen Sousa
- Departament
de Ciència de Materials i Química Física &
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/Martí i Franquès 1, Barcelona 08028, Spain
| | - Paul S. Bagus
- Department
of Chemistry, University of North Texas, Denton, Texas 76203-5017, United
States
| | - Francesc Illas
- Departament
de Ciència de Materials i Química Física &
Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/Martí i Franquès 1, Barcelona 08028, Spain
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5
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Zhou D, Zhang S, Khan AU, Chen L, Ge G. A wearable AuNP enhanced metal-organic gel (Au@MOG) sensor for sweat glucose detection with ultrahigh sensitivity. NANOSCALE 2023; 16:163-170. [PMID: 38073477 DOI: 10.1039/d3nr05179j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The demand for sensitive and non-invasive sensors for monitoring glucose levels in sweat has grown considerably in recent years. This study presents the development of a wearable sensor for sweat glucose detection with ultrahigh sensitivity. The sensor was fabricated by embedding Au nanoparticles (AuNPs) and metal-organic gels (MOGs) on nickel foam (NF). A non-enzymatic electrocatalytic glucose sensor has been developed to combine the three-dimensional network of MOGs with more active sites favourable for glucose diffusion and the transfer of electrons from glucose to the electrode. These results show that the sensor has an ultrahigh sensitivity of 13.94 mA mM-1 cm-2, a linear detection range between 2 and 600 μM, and a lower detection limit as low as 1 μM (signal/noise = 3) with comparable accuracy and reliability under non-alkaline conditions to those of high-pressure ion chromatography (HPIC). Furthermore, a wearable sweat glucose sensor has been constructed by sputtering an Au conductive layer on a flexible polydimethylsiloxane (PDMS) substrate and coating it with Au@MOGs. Our work demonstrates that the combination of Au NPs and MOGs can enhance the sensitivity and activity of these materials, making them useful for electrocatalytic glucose monitoring with ultrahigh sensitivity.
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Affiliation(s)
- Dengfeng Zhou
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No. 11 ZhongguancunBeiyitiao, Beijing 100190, PR China.
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shuangbin Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No. 11 ZhongguancunBeiyitiao, Beijing 100190, PR China.
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Atta Ullah Khan
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No. 11 ZhongguancunBeiyitiao, Beijing 100190, PR China.
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Lan Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No. 11 ZhongguancunBeiyitiao, Beijing 100190, PR China.
| | - Guanglu Ge
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, No. 11 ZhongguancunBeiyitiao, Beijing 100190, PR China.
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6
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Paul S, Nandi S, Das M, Bora A, Hossain MT, Ghosh S, Giri PK. Two-dimensional bismuth oxyselenide quantum dots as nanosensors for selective metal ion detection over a wide dynamic range: sensing mechanism and selectivity. NANOSCALE 2023; 15:12612-12625. [PMID: 37462457 DOI: 10.1039/d3nr02029k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Bismuth oxyselenide (Bi2O2Se) nanosheets, a new 2D non-van der Waals nanomaterial having unique semiconducting properties, could be favorable for various sensing applications. In the present report, a top-down chemical approach was adopted to synthesize ultrathin Bi2O2Se quantum dots (QDs) in an appropriate solution. The as-prepared 2D Bi2O2Se QDs with an average size of ∼3 nm, exhibiting strong visible fluorescence, were utilized for heavy-metal ion detection with high selectivity. The QDs show a high optical band gap and a reasonably high fluorescence quantum yield (∼4%) in the green region without any functionalization. A series of heavy metal ions were detected using these QDs. The as-prepared QDs exhibit selective detection of Fe3+ over a wide dynamic range with a high quenching ratio and a low detection limit (<0.5 μM). The mechanism of visible fluorescence and Fe3+ ion-induced quenching was investigated in detail based on a model involving adsorption and charge transfer. Density functional theory (DFT) first principles calculations show that fluorescence quenching occurred selectively due to the efficient trapping of electrons in the bandgap states created by the Fe atoms. This work presents a sustainable and scalable method to synthesize 2D Bi2O2Se QDs for heavy metal ion sensing over a wide dynamic range and these 2D QDs could find potential uses in gas sensors, biosensors and optoelectronics.
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Affiliation(s)
- Sumana Paul
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sanju Nandi
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Mandira Das
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Abhilasha Bora
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Md Tarik Hossain
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Subhradip Ghosh
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - P K Giri
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India.
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, India
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7
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Lahiri N, Song D, Zhang X, Huang X, Stoerzinger KA, Carvalho OQ, Adiga PP, Blum M, Rosso KM. Interplay between Facets and Defects during the Dissociative and Molecular Adsorption of Water on Metal Oxide Surfaces. J Am Chem Soc 2023; 145:2930-2940. [PMID: 36696237 DOI: 10.1021/jacs.2c11291] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Surface terminations and defects play a central role in determining how water interacts with metal oxides, thereby setting important properties of the interface that govern reactivity such as the type and distribution of hydroxyl groups. However, the interconnections between facets and defects remain poorly understood. This limits the usefulness of conventional notions such as that hydroxylation is controlled by metal cation exposure at the surface. Here, using hematite (α-Fe2O3) as a model system, we show how oxygen vacancies overwhelm surface cation-dependent hydroxylation behavior. Synchrotron-based ambient-pressure X-ray photoelectron spectroscopy was used to monitor the adsorption of molecular water and its dissociation to form hydroxyl groups in situ on (001), (012), or (104) facet-engineered hematite nanoparticles. Supported by density functional theory calculations of the respective surface energies and oxygen vacancy formation energies, the findings show how oxygen vacancies are more prone to form on higher energy facets and induce surface hydroxylation at extremely low relative humidity values of 5 × 10-5%. When these vacancies are eliminated, the extent of surface hydroxylation across the facets is as expected from the areal density of exposed iron cations at the surface. These findings help answer fundamental questions about the nature of reducible metal oxide-water interfaces in natural and technological settings and lay the groundwork for rational design of improved oxide-based catalysts.
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Affiliation(s)
- Nabajit Lahiri
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Duo Song
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Xiaopeng Huang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
| | - Kelsey A Stoerzinger
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States.,Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - O Quinn Carvalho
- Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - Prajwal P Adiga
- Department of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon97331, United States
| | - Monika Blum
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California94720, United States
| | - Kevin M Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington99352, United States
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8
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Bagus PS, Nelin CJ, Brundle CR, Crist BV, Ilton ES, Lahiri N, Rosso KM. Main and Satellite Features in the Ni 2p XPS of NiO. Inorg Chem 2022; 61:18077-18094. [DOI: 10.1021/acs.inorgchem.2c02549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Paul S. Bagus
- Department of Chemistry, University of North Texas, Denton, Texas 76203-5017, United States
| | | | | | | | - Eugene S. Ilton
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Nabajit Lahiri
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Kevin M. Rosso
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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9
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Balogun KY, Chukwunenye P, Anwar F, Ganesan A, Adesope Q, Willadsen D, Nemsak S, Cundari TR, Bagus PS, D'Souza F, Kelber JA. Interaction of molecular nitrogen with vanadium oxide in the absence and presence of water vapor at room temperature: Near-ambient pressure XPS. J Chem Phys 2022; 157:104701. [DOI: 10.1063/5.0107678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Interactions of N2 at oxide surfaces are important for understanding electrocatalytic nitrogen reduction reaction mechanisms. Interactions of N2 at the polycrystalline vanadium oxide/vapor interface were monitored at room temperature and total pressures up to 10-1 Torr using Near-Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS). The oxide film was predominantly V(IV), with V(III) and V(V) components. XPS spectra were acquired in environments of both pure N2 and equal pressures of N2 and H2O vapor. In pure N2, broad, partially resolved N1s features were observed at 401.0 eV and 398.7 eV binding energy, with relative intensities of ~ 3:1, respectively. These features remained upon subsequent pump down to 10-9 Torr. Observed maximum N surface coverage was ~ 1.5 x 1013 cm-2-a fraction of a monolayer. In the presence of equal pressures of H2O, the adsorbed N intensity at 10-1 Torr is ~ 25% of that observed in the absence of H2O. The formation of molecularly adsorbed H2O was also observed. Density functional theory-based calculations suggest favorable absorption energies for N2 bonding to both V(IV) and V(III) cation sites, but less so for V(V) sites. Hartree-Fock-based cluster calculations for N2-V end-on adsorption show that experimental XPS doublet features are consistent with calculated shake-up and normal, final ionic configurations, for N2 end-on bonding to V(III) sites, but not V(IV) sites. XPS spectra of vanadium oxide transferred in situ between electrochemical and UHV environments indicate that the oxide surfaces studied here are stable upon exposure to electrolyte under NRR-relevant conditions.
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Affiliation(s)
| | | | - Fatima Anwar
- University of North Texas, United States of America
| | | | | | | | - Slavomir Nemsak
- Lawrence Berkeley National Laboratory, United States of America
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Zhao H, Wang T, Liu D, Yang Q. Recovery of syringic acid from aqueous solution by magnetic Fe–Zn/ZIF and its slow release from the CA-coated carrier based on the 3Rs concept. CrystEngComm 2022. [DOI: 10.1039/d2ce01152b] [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
The excessive utilization of syringic acid (SA) has caused severe environmental pollution and economic waste.
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Affiliation(s)
- Huifang Zhao
- State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, P. R. China
| | - Ting Wang
- State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, P. R. China
| | - Dahuan Liu
- State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, P. R. China
- College of Chemical Engineering, Qinghai University, Xining 810016, P. R. China
| | - Qingyuan Yang
- State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, P. R. China
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