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Zhang Y, Qi X, Zhang X, Huang Y, Ma Q, Guo X, Wu Y. β-Cyclodextrin/carbon dots-grafted cellulose nanofibrils hydrogel for enhanced adsorption and fluorescence detection of levofloxacin. Carbohydr Polym 2024; 340:122306. [PMID: 38858025 DOI: 10.1016/j.carbpol.2024.122306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/02/2024] [Accepted: 05/20/2024] [Indexed: 06/12/2024]
Abstract
In this study, a novel hydrogel, β-cyclodextrin/carbon dots-grafted cellulose nanofibrils hydrogel (βCCH), was fabricated for removal and fluorescence determination of levofloxacin (LEV). A comprehensive analysis was performed to characterize its physicochemical properties. Batch adsorption experiments were conducted, revealing that βCCH reached a maximum adsorption capacity of 1376.9 mg/g, consistent with both Langmuir and pseudo-second-order models, suggesting that the adsorption process of LEV on βCCH was primarily driven by chemical adsorption. The removal efficiency of βCCH was 99.2 % under the fixed conditions (pH: 6, initial concentration: 20 mg/L, contact time: 300 min, temperature: 25 °C). The removal efficiency of βCCH for LEV still achieved 97.3 % after five adsorption-desorption cycles. By using βCCH as a fluorescent probe for LEV, a fast and sensitive method was established with linear ranges of 1-120 mg/L and 0.2-1.0 μg/L and a limit of detection (LOD) as low as 0.09 μg/L. The viability of βCCH was estimated based on the economic analysis of the synthesis process and the removal of LEV, demonstrating that βCCH was more cost-effective than commercial activated carbon. This study provides a novel approach for preparing a promising antibiotic detection and adsorption material with the advantages of stability, and cost-effectiveness.
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Affiliation(s)
- Yuting Zhang
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xinmiao Qi
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xuefeng Zhang
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yong Huang
- Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Ma
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xin Guo
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
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2
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Zhang X, Qi X, Ouyang J, Zuo Y, Ma Q, Tan H, Guo X, Wu Y. Fluorescent cellulose nanofibrils-based hydrogel incorporating MIL-125-NH 2 for effective adsorption and detection of iodide ion. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134758. [PMID: 38820756 DOI: 10.1016/j.jhazmat.2024.134758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
To remove iodine ion (I-) from wastewater, a novel hydrogel, the fluorescent cellulose nanofibrils-based hydrogel (FCNH), was synthesized to enable both detection and adsorption of I-. The FCNH comprised cellulose nanofibrils (CNs), silver nanoclusters (AgNCs), and MIL-125-NH2. It exhibited an excellent adsorption capacity for I-, with a maximum adsorption capacity of 373.7 mg/g, fitting both the Langmuir and pseudo-second-order models. Additionally, FCNH displayed excellent regeneration properties, retaining 88.0 % of its initial adsorption capacity after six adsorption-desorption cycles. Functioning as a fluorescent sensor, the synthesized FCNH enabled the detection of I- through dynamic quenching, with linear ranges of 5 to 200 mg/L and 0.2 to 1.0 μg/L, and a determination limit of 0.11 μg/L. Analysis of the adsorption and detection mechanisms revealed that FCNH's outstanding performance arose from its 3D porous structure comprising CNs, AgNCs, and MIL-125-NH2. Economic analysis indicated that FCNH was inexpensive compared to commercially available activated carbon. Thus, FCNH demonstrated significant potential as an economical and reusable adsorbent for iodine ion removal.
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Affiliation(s)
- Xuefeng Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xinmiao Qi
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jiayu Ouyang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yingfeng Zuo
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qiang Ma
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Haining Tan
- National Glycoengineering Research Center, Shandong University, Qingdao 266237, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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3
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Jiang M, Wang Y, Li J, Gao X. Review of carbon dot-hydrogel composite material as a future water-environmental regulator. Int J Biol Macromol 2024; 269:131850. [PMID: 38670201 DOI: 10.1016/j.ijbiomac.2024.131850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/23/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
As water pollution and scarcity pose severe threats to the sustainable progress of human society, it is important to develop a method or materials that can accurately and efficiently detect pollutants and purify aquatic environments or exploit marine resources. The compositing of photoluminescent and hydrophilic carbon dots (CDs) with hydrogels bearing three-dimensional networks to form CD-hydrogel composites to protect aquatic environments is a "win-win" strategy. Herein, the feasibility of the aforementioned method has been demonstrated. This paper reviews the recent progress of CD-hydrogel materials used in aquatic environments. First, the synthesis methods for these composites are discussed, and then, the composites are categorized according to different methods of combining the raw materials. Thereafter, the progress in research on CD-hydrogel materials in the field of water quality detection and purification is reviewed in terms of the application of the mechanisms. Finally, the current challenges and prospects of CD-hydrogel materials are described. These results are expected to provide insights into the development of CD-hydrogel composites for researchers in this field.
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Affiliation(s)
- Minghao Jiang
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China
| | - Yong Wang
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China.
| | - Jichuan Li
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China
| | - Xing Gao
- College of Sports and Human Sciences, Post-doctoral Mobile Research Station, Graduate School, Harbin Sport University, Harbin 150008, PR China.
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4
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Yan Y, Wang W, Liu F, Zhang M, Gao J, Lu C. Reducing nitrogen loss from farmland by layered double hydroxide-supported carbon dots-enhanced ammonium immobilization. CHEMOSPHERE 2024; 351:141160. [PMID: 38219985 DOI: 10.1016/j.chemosphere.2024.141160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/06/2024] [Accepted: 01/07/2024] [Indexed: 01/16/2024]
Abstract
It remains a significant challenge to develop a kind of cost-effective and eco-friendly adsorbent with strong immobilization capabilities for ammonium in farmland. In this work, we employed Ca/Al layered double hydroxide-supported carbon dots (CDs@Ca/Al-LDHs) as a novel and efficient adsorbent for ammonium immobilization both in aqueous and soil environments. Such a composite could exhibit a high adsorption capacity towards ammonium in solution, which was four times higher than zeolite and three times higher than biochar under the same conditions. The mechanism investigations revealed that electrostatic interactions between the negatively charged CDs and the positively charged ammonium played a key role in the adsorption. In 30-day leaching experiments, the fabricated composite cumulatively reduced ammonium and nitrate by 6.3% and 9.7%, respectively at a dosage of 0.1% (w/w). Incubation experiments further confirmed that the developed composite could effectively inhibit ammonia volatilization and nitrification by immobilizing the ammonium within soil matrices. Our results demonstrated that CDs@Ca/Al-LDHs represented a promising candidate for cost-effective and eco-friendly immobilization of excess ammonium from over-fertilized farmland.
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Affiliation(s)
- Yixin Yan
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Wei Wang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Fan Liu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Mengnan Zhang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Jianlei Gao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China
| | - Chao Lu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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5
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Hou Y, Feng H, He J, Meng F, Sun J, Li X, Wang X, Su Z, Sun C. Terbium alginate encapsulated CsPbI 3@Pb-MOF: a ratiometric fluorescent bead for detection and adsorption of Fe 3. Dalton Trans 2024; 53:2541-2550. [PMID: 38234224 DOI: 10.1039/d3dt04187e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Halide perovskite nanocrystals are innovative luminescent materials for fluorescent probes with high quantum yield and narrow emission bandwidth. However, the limited stability, single-signal response, and separation challenges obstruct their widespread use in water ion detection. Herein, a ratiometric fluorescence sensor based on terbium alginate gel beads (green fluorescent, namely Tb-AG) embedded with powdered CsPbI3@Pb-MOF (red fluorescent) was prepared for fluorescent determination and adsorption of Fe3+. Pb-MOF's protection notably enhances the water stability of CsPbI3, while the energy transfer between CsPbI3@Pb-MOF and Tb3+ elevates the optical performance of CsPbI3@Pb-MOF@Tb-AG. Significantly, Fe3+ markedly suppresses CsPbI3@Pb-MOF red fluorescence at 647 nm, while not noticeably affecting Tb-AG green emission at 528 nm. The sensor exhibited a strong linear response to Fe3+ concentrations ranging from 0 to 90 μM, with a detection limit of 0.44 μM and high selectivity. The CsPbI3@Pb-MOF@Tb-AG-based sensor has been effectively validated through its successful use in detecting Fe3+ in tap and river water samples. Furthermore, CsPbI3@Pb-MOF@Tb-AG demonstrates a notable adsorption capacity of 325.4 mg g-1 Fe3+. Finally, the mechanism of Fe3+ detection and adsorption was determined.
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Affiliation(s)
- Yangwen Hou
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022 Jilin, China
| | - Hua Feng
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Changchun, 130022 Jilin, China.
| | - Jingting He
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022 Jilin, China
| | - Fanfei Meng
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Changchun, 130022 Jilin, China.
| | - Jing Sun
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Changchun, 130022 Jilin, China.
| | - Xiao Li
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Changchun, 130022 Jilin, China.
| | - Xinlong Wang
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University, Changchun, 130024 Jilin, China.
| | - Zhongmin Su
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Changchun, 130022 Jilin, China.
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun, 130021 Jilin, China
| | - Chunyi Sun
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University, Changchun, 130024 Jilin, China.
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Kolekar AG, Nille OS, Koparde SV, Patil AS, Waghmare RD, Sohn D, Anbhule PV, Kolekar GB, Gokavi GS, More VR. Green, facial zinc doped hydrothermal synthesis of cinnamon derived fluorescent carbon dots (Zn-Cn-CDs) for highly selective and sensitive Cr 6+ and Mn 7+ metal ion sensing application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123413. [PMID: 37741103 DOI: 10.1016/j.saa.2023.123413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/04/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
Carbon dots have demonstrated a great potential as luminescent nanoparticles in energy, drug delivery, sensors, and various biomedical applications as well as environmental pollutants and water analysis. Although, such nanoparticles appear to exhibit low toxicity compared to other semiconductor and metal based luminescent nanomaterials. Today, we know that toxicity of carbon dots (CDs) strongly depends on the protocol of fabrication. The various dopants or heteroatoms have been used to enhance the optical and physicochemical properties. In this work, zinc doped aqueous fluorescent Zn-Cn-CDs have been synthesized from cinnamon by hydrothermal synthesis method. The synthesized Zn-Cn-CDs were confirmed for their physicochemical properties by using various characterization techniques viz. UV-Vis. and spectrofluorometer for optical properties, Fourier transform infrared spectroscopy (FTIR) and XRD, as well as TEM and XPS, was done for morphological and chemical analysis. The successfully synthesized Zn-Cn-CDs showed outstanding optical performance for metal ion sensing applications. The developed heteroatom doped Zn-Cn-CDs as a fluorescent probe exhibited higher selectivity and sensitivity for Cr6+ and Mn7+ metal ions. The obtained results showed a better linear range with excellent limit of detection (LOD) 3.97 µg/mL and 2.05 µg/mL for Cr6+ and Mn7+ metal ions respectively. The low cost, simple and highly fluorescent probe can be effectively applicable for development of environmental pollutants sensing purposes.
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Affiliation(s)
- Akanksha G Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Omkar S Nille
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Sneha V Koparde
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Akshay S Patil
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul Campus, Seoul, South Korea
| | - Ravindra D Waghmare
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Daewon Sohn
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul Campus, Seoul, South Korea
| | - Prashant V Anbhule
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
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7
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Ran Q, Zhao D, Ji Y, Fan Z, Lin G, Liu X, Jia K. Recyclable adsorption removal and fluorescent monitoring of hexavalent chromium by electrospun nanofibers membrane derived from Tb 3+ coordinating polyarylene ether amidoxime. Talanta 2024; 266:125058. [PMID: 37572474 DOI: 10.1016/j.talanta.2023.125058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/03/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Emerging technologies or advanced materials which can simultaneously adsorb and detect highly toxic Cr(VI) are urgently in demand for environmental remediation. Herein, we have designed and synthesized a functional polyarylene ether with aromatic main chain and pendent carboxyl groups along with amidoxime group that can be coordinated with different metal ions. Thanks to its versatile activation of the lanthanide ions' inherent fluorescence and good processability, the fluorescent nanofiber membranes with competitive Cr(VI) adsorption and detection performance have been fabricated via one-step electrospinning of mixed solution containing synthesized polymer and terbium salt. More specifically, the optimized nanofiber membrane exhibits a maximal Cr(VI) adsorption of 278.2 mg/g and specific detection for hexavalent chromium down to 11.76 nM. More importantly, the prepared fluorescent nanofiber membranes can be easily re-generated and re-used for both Cr(VI) adsorption and detection for five times. Given the unique advantages of easy fabrication, competitive dual functionalities as well as good reusability of electrospun fluorescent nanofiber membranes, the present work basically opens up new insight in the design of multifunctional recyclable material for the remediation of heavy metal pollution.
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Affiliation(s)
- Qimeng Ran
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Danlei Zhao
- College of Quality and Technical Supervision, Hebei University, Baoding, 071002, China
| | - Yao Ji
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Zilin Fan
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Guo Lin
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China
| | - Kun Jia
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China.
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8
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Zhang Z, Huang Z, Qin D, Liu D, Guo X, Lin H. Fluorescent starch-based hydrogel with cellulose nanofibrils and carbon dots for simultaneous adsorption and detection of Pb(II). Carbohydr Polym 2024; 323:121427. [PMID: 37940256 DOI: 10.1016/j.carbpol.2023.121427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 11/10/2023]
Abstract
The adsorption removal of lead (Pb) ions has become a crucial area of research due to the potential health hazards associated with Pb contamination. Developing cost-effective adsorbents for the removal of Pb(II) ions is significantly important. Hence, a novel fluorescent starch-based hydrogel (FSH) using starch (ST), cellulose nanofibrils (CN), and carbon dots (CD) was fabricated for simultaneous adsorption and detection of Pb(II). A comprehensive characterization of FSH, including its morphological features, chemical composition, and fluorescence characteristics, was conducted. Notably, FSH exhibited a maximum theoretical adsorption capacity of 265.9 mg/g, which was 13.0 times higher than that of pure ST. Moreover, FSH was employed as a fluorescent sensor for Pb(II) determination, achieving a limit of detection (LOD) of 0.06 μg/L. An analysis was further performed to investigate the adsorption and detection mechanisms of Pb(II) utilizing FSH. This study provides valuable insights into the production of a novel cost-effective ST-based adsorbent for the removal of Pb(II) ions.
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Affiliation(s)
- Zhixu Zhang
- State Key Laboratory of Subhealth Intervention Technology, 410128 Changsha, Hunan, China; College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan, China
| | - Zhengwu Huang
- College of Food Science and Technology, Hunan Agricultural University, 410128 Changsha, Hunan, China
| | - Dan Qin
- College of Food Science and Technology, Hunan Agricultural University, 410128 Changsha, Hunan, China
| | - Dongbo Liu
- State Key Laboratory of Subhealth Intervention Technology, 410128 Changsha, Hunan, China; College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, 410004 Changsha, Hunan, China.
| | - Haiyan Lin
- National Research Center of Engineering Technology for Utilization Ingredients from Botanicals, 410128 Changsha, Hunan, China
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9
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Li Q, You Y, Hu X, Lu D, Wen Q, Yu G, Wang W, Xu T. Preparation of amino-modified carbon quantum dots-ZnO/cellulose nanofiber multifunctional hydrogel: Enhanced adsorption synergistic photoreduction and reversible fluorescence response visual recognition of Cr(VI). Int J Biol Macromol 2024; 254:128068. [PMID: 37967594 DOI: 10.1016/j.ijbiomac.2023.128068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 11/17/2023]
Abstract
This work innovatively used cellulose nanofibers as a photocatalyst carrier, which could recycle nano-photocatalysts and minimize nanoparticle aggregation. The morphology, structures, chemical composition, optical-electronic properties and photocatalytic performance of amino-modified carbon quantum dots-ZnO/cellulose nanofiber (N-CQDs-ZnO/CNF: ZCH-2) hydrogel were characterized by SEM, TEM, BET, EDS, XRD, FTIR, UV-vis, XPS, PL and other techniques. The mechanism of Cr(VI) adsorption synergistic photoreduction by ZCH-2 was discussed in detail. The results showed that the prepared ZCH-2 had excellent removal performance for Cr(VI). After 120 min of adsorption and 40 min of photoreduction, the removal efficiency of Cr(VI) was 98.9 %. Compared with ZnO/CNF hydrogel, the adsorption performance of ZCH-2 increased by 268 % and the photoreduction performance increased by 116 %. The adsorption of Cr(VI) by ZCH-2 was controlled by electrostatic attraction and chemical adsorption. The photoreduction kinetic constant of ZCH-2 was 0.106 min-1, which was 8.9 times that of ZnO/CNF hydrogel. The N-CQDs in ZCH-2 could form N-CQDs-metal complexes with Cr(VI), resulting in fluorescence quenching, so Cr(VI) could be visually identified by fluorescence changes. This study provides a new idea for the design and optimization of a new multifunctional hydrogel with efficient adsorption-photoreduction-fluorescence recognition.
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Affiliation(s)
- Qing Li
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yong You
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xingyu Hu
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Danqing Lu
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qian Wen
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Gang Yu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Wenlei Wang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Tao Xu
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
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10
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Wang H, Chen Y, Mo M, Dorsel PKP, Wu C. Visualized adsorption and enhanced photocatalytic removal of Cr 6+ by carbon dots-incorporated fluorescent nanocellulose aerogels. Int J Biol Macromol 2023; 253:127206. [PMID: 37793519 DOI: 10.1016/j.ijbiomac.2023.127206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/13/2023] [Accepted: 09/30/2023] [Indexed: 10/06/2023]
Abstract
In this study, carbon dots (CDs) and titanate nanofibers (TNs) were mixed with TEMPO-oxidized nanocellulose (TOCNC) to prepare fluorescent nanocellulose aerogels (FNAs) by a Schiff base reaction. The resulting FNA can detect the adsorption of Cr6+ through the fluorescence quenching in CDs and promote the removal of Cr6+ through the synergistic effect of CDs in photocatalysis. The optimized FNA has a maximum adsorption capacity of 543.38 mg/g, higher than most reported Cr6+ adsorbents. This excellent performance is due to the porous structure of the aerogel, which gives it a high specific surface area of 20.53 m2/g and provides abundant adsorption sites. Simultaneously, CDs can enhance the amino-induced Cr6+ adsorption, improve the photocatalytic performance of TNs, and expose more adsorption sites through electrostatic adsorption of amino-induced reduction products (Cr3+). This study explores the preparation of visualized nanosorbents with enhanced photocatalytic removal of Cr6+ and provides a new direction for nanoscale photocatalysts.
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Affiliation(s)
- Hanyu Wang
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Yehong Chen
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China.
| | - Meiqing Mo
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Padonou-Kengue Patrick Dorsel
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Chaojun Wu
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China.
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11
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Zuo J, Lv S, Liang S, Zhang S, Wang J, Wei D, Liu L. Fabrication of 1,8-naphthalimide modified cellulose derivative composite fluorescent hydrogel probes and their application in the detection of Cr(VI). Int J Biol Macromol 2023; 253:127082. [PMID: 37769762 DOI: 10.1016/j.ijbiomac.2023.127082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/20/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
The design and development of a rapid and quantitative method for the detection of heavy metal ions is of great importance for environmental protection. We have prepared a 1,8-Naphthalimide modified cellulose composite fluorescent hydrogel (CENAEA/PAA) with a stereo double network structure. Characterized by excellent hydrogel functional structure and fluorescence detection performance, it can efficiently and selectively identify and detect Cr(VI) with linear quenching in the range of 0-400 μmol/L and detection limit of 0.58 μmol/L for Cr(VI). The results show that the CENAEA/PAA can effectively adsorb Cr(VI) with a maximum adsorption capacity of 189.04 mg/g. Finally, the morphological characteristics, chemical structure, fluorescence properties and adsorption behavior of CENAEA/PAA were analyzed and fitted well with the pseudo-second-order model and Freundlich model. Thus, the present work provides a green and sustainable approach for the synthesis of a functional material that can be used for the detection and adsorption of heavy metal ions.
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Affiliation(s)
- Jingjing Zuo
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Shenghua Lv
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Shan Liang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Shanshan Zhang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Jialin Wang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Dequan Wei
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Leipeng Liu
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
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12
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Chen S, Li X, Bai M, Shi SQ, Aladejana JT, Cao J, Li J. Oyster-inspired carbon dots-functionalized silica and dialdehyde chitosan to fabricate a soy protein adhesive with high strength, mildew resistance, and long-term water resistance. Carbohydr Polym 2023; 319:121093. [PMID: 37567684 DOI: 10.1016/j.carbpol.2023.121093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/17/2023] [Accepted: 06/02/2023] [Indexed: 08/13/2023]
Abstract
Developing multifunctional adhesives with exceptional cold-pressing strength, water resistance, toughness, and mildew resistance remains challenging. Herein, inspired by oysters, a multifunctional organic-inorganic hybrid soybean meal (SM)-based adhesive was fabricated by incorporating amino-modified carbon dots functionalized silica nanoparticles (CDs@SiO2) and dialdehyde chitosan (DCS) into SM matrix. DCS effectively enhanced the interface interactions of organic-inorganic phases and the rigid nanofillers CDs@SiO2 uniformly dispersed in the SM matrix, which provided energy dissipation to improve the adhesive's toughness. Owing to the stiff skeleton structure and enhanced crosslinking density, the crosslinker-modified SM (MSM)/DCS/CDs@SiO2-2 wood adhesive exhibited outstanding cold-pressing strength (0.74 MPa), wet shear strength (1.36 MPa), and long-term water resistance (49 d). Additionally, the resultant adhesive showed superior antimildew and antibacterial properties benefiting from the introduction of DCS. Intriguingly, the fluorescent properties endowed by carbon dots further broadened the application of adhesives for realizing security testing. This study opens a new pathway for the synthesis of multifunctional biomass adhesives in industrial and household applications.
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Affiliation(s)
- Shiqing Chen
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Xinyi Li
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Mingyang Bai
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Sheldon Q Shi
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203, USA
| | - John Tosin Aladejana
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, China
| | - Jinfeng Cao
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
| | - Jianzhang Li
- Key Laboratory of Wood Material Science and Application, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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13
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Gandla K, Kumar KP, Rajasulochana P, Charde MS, Rana R, Singh LP, Haque MA, Bakshi V, Siddiqui FA, Khan SL, Ganguly S. Fluorescent-Nanoparticle-Impregnated Nanocomposite Polymeric Gels for Biosensing and Drug Delivery Applications. Gels 2023; 9:669. [PMID: 37623124 PMCID: PMC10453855 DOI: 10.3390/gels9080669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/05/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
Nanocomposite polymeric gels infused with fluorescent nanoparticles have surfaced as a propitious category of substances for biomedical purposes owing to their exceptional characteristics. The aforementioned materials possess a blend of desirable characteristics, including biocompatibility, biodegradability, drug encapsulation, controlled release capabilities, and optical properties that are conducive to imaging and tracking. This paper presents a comprehensive analysis of the synthesis and characterization of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels, as well as their biomedical applications, such as drug delivery, imaging, and tissue engineering. In this discourse, we deliberate upon the merits and obstacles linked to these substances, encompassing biocompatibility, drug encapsulation, optical characteristics, and scalability. The present study aims to provide an overall evaluation of the potential of fluorescent-nanoparticle-impregnated nanocomposite polymeric gels for biomedical applications. Additionally, emerging trends and future directions for research in this area are highlighted.
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Affiliation(s)
- Kumaraswamy Gandla
- Department of Pharmaceutical Analysis, Chaitanya (Deemed to be University), Hyderabad 500075, India
| | - K. Praveen Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Government of NCT of Delhi, Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi 110017, India
| | - P. Rajasulochana
- Department of Microbiology, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Kanchipuram 602105, India
| | - Manoj Shrawan Charde
- Department of Pharmaceutical Chemistry, Government College of Pharmacy, Karad 415124, India
| | - Ritesh Rana
- Department of Pharmaceutics, Himachal Institute of Pharmaceutical Education and Research (HIPER), Hamirpur 177033, India
| | - Laliteshwar Pratap Singh
- Department of Pharmaceutical Chemistry, Narayan Institute of Pharmacy, Gopal Narayan Singh University, Rohtas 821305, India
| | - M. Akiful Haque
- Department of Pharmaceutical Analysis, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Vasudha Bakshi
- Department of Pharmaceutics, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Falak A. Siddiqui
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa 413520, India
- Department of Pharmaceutical Chemistry, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - Sharuk L. Khan
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa 413520, India
- Department of Pharmaceutical Chemistry, School of Pharmacy, Anurag University, Hyderabad 500088, India
| | - S. Ganguly
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, Ramat Gan 5290002, Israel
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14
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Chen W, Xie H, Jiang N, Guo X, Liu Z. Synthesis of magnetic sodium lignosulfonate hydrogel(Fe 3O 4@LS) and its adsorption behavior for Cd 2+ in wastewater. Int J Biol Macromol 2023; 245:125498. [PMID: 37356695 DOI: 10.1016/j.ijbiomac.2023.125498] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/05/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
Heavy metal pollution is becoming increasingly serious. Heavy metal pollutants are nonbiodegradable and can be bioenriched through the food chain, and thus, they greatly threaten the environment and human health. Hydrogels, as an ideal adsorbent, have been widely used to treat heavy metal industrial wastewater. Sodium lignosulfonate hydrogel (LS) was prepared by free-radical grafting copolymerization, and nano-Fe3O4 particles were loaded in LS by an in-situ precipitation method (Fe3O4@LS). The magnetic properties and adsorption capacity of Fe3O4@LS are closely related to the load capacity of Fe3O4. XRD, FTIR, XPS, SEM, TEM, BET, and TGA analyses of the materials were performed. Subsequently, the removal effect of the typical pollutant Cd2+ in heavy metal-polluted water was studied with Fe3O4@LS as the adsorbent. The influences of the Fe3O4@LS dosage and initial pH were investigated, and the adsorption kinetics and thermodynamics were further explored and discussed. Finally, the adsorption mechanism of Fe3O4@LS on Cd2+ was obtained. Results show that Fe3O4@LS has a more stable spatial network structure than LS, and the pore size, specific surface area and active sites increase. The maximum adsorption capacity can reach 88.00 mg/g when pH = 6 and the dosage of Fe3O4@LS is 1000 mg/L. The adsorption of Cd2+ by Fe3O4@LS conforms to pseudosecond-order kinetics and the Temkin isothermal adsorption model. Further mechanistic investigations show that the sorption of Cd2+ on Fe3O4@LS is mainly attributed to surface complexation, electrostatic attraction and coprecipitation. The coexistence of cations in water will inhibit the adsorption of Fe3O4@LS. Fe3O4@LS has superparamagnetism and a good response to an external magnetic field. The adsorption rate can still reach >60 % after four elutions with NaCl as the eluent. This material can be reused and has good application potential.
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Affiliation(s)
- Wu Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China; HSE Key Laboratory of Petro China Company Limited (Yangtze University), Jingzhou 434023, People's Republic of China
| | - Huijia Xie
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China; HSE Key Laboratory of Petro China Company Limited (Yangtze University), Jingzhou 434023, People's Republic of China.
| | - Nan Jiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China; HSE Key Laboratory of Petro China Company Limited (Yangtze University), Jingzhou 434023, People's Republic of China
| | - Xianzhe Guo
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China; HSE Key Laboratory of Petro China Company Limited (Yangtze University), Jingzhou 434023, People's Republic of China
| | - Zhuozhuang Liu
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China; HSE Key Laboratory of Petro China Company Limited (Yangtze University), Jingzhou 434023, People's Republic of China
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15
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Busayaporn W, Songsrirote K, Phlialamkheak T, Chumram J, Praingam N, Prayongpan P. Synthesis and application of fluorescent N-doped carbon dots/hydrogel composite for Cr(VI) adsorption: Uncovering the ion species transformation and fluorescent quenching mechanism. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023:10.1007/s10653-023-01576-x. [PMID: 37131111 DOI: 10.1007/s10653-023-01576-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/12/2023] [Indexed: 05/04/2023]
Abstract
A fluorescent composite material fabricated from nitrogen-doped carbon dots with polyvinyl alcohol (PVA)/polyvinylpyrrolidone (PVP)/citric acid (CA) hydrogel was synthesized using a microwave-assisted hydrothermal method. The composite was used as a metal ion sensor and adsorbent to remove chromium (Cr(VI)) from water. The chemical structure and Cr(VI) removal performance of the fluorescent composite films were also characterized. Fluorescent quenching upon Cr(VI) adsorption showed that Cr(VI) binding was attributed to the N-doped carbon dots. The results were confirmed by several analytical techniques, including X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and X-ray absorption spectroscopy (XAS). The mechanism of Cr(VI) removal from water by the fluorescent composite film was based on the adsorption and subsequent reduction of N-doped carbon dots within the 3D porous composite film. XPS measurements showed that 53.2% Cr(III) and 46.8% Cr(VI) were present on the composite surface after Cr(VI) adsorption. Moreover, XAS revealed a change in the oxidation state of Cr(VI) to Cr(III) after adsorption and in the Cr-O bond length (1.686 Å to 2.284 Å) after reduction. The Cr(VI) adsorption capacity of the composite film was 4.90 mg g-1 at pH 4 and fit the pseudo-second-order kinetic and Freundlich models. The results of this study could be used as a platform to further apply CDs/HD composites to remove Cr(VI) from water sources.
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Grants
- grant numbers 123/2564, 124/2564, 125/2564 Faculty of Science, Srinakharinwirot University, Thailand
- grant numbers 123/2564, 124/2564, 125/2564 Faculty of Science, Srinakharinwirot University, Thailand
- grant numbers 123/2564, 124/2564, 125/2564 Faculty of Science, Srinakharinwirot University, Thailand
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Affiliation(s)
| | - Kriangsak Songsrirote
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Thatsanai Phlialamkheak
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Jirayut Chumram
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Ngamjit Praingam
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Pornpimol Prayongpan
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand.
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16
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Jing L, Ding Q, Li X, Lou J, Liu Z, Jiang Y, Han W, Cheng Z. Bifunctional collagen fiber/carbon quantum dot fluorescent adsorbent for efficient adsorption and detection of Pb 2. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:161989. [PMID: 36754317 DOI: 10.1016/j.scitotenv.2023.161989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
In this work, fluorescent adsorbents that can efficiently detect and remove Pb2+ were developed by integrating the designed amino-modified carbon quantum dots and carboxyl-modified collagen. The adsorption properties of the fluorescent adsorbent were further optimized and analyzed using a series of response surface experiments. The maximum adsorption concentration for Pb2+ was 183 mg.g-1. The adsorption isotherms fit well with the Langmuir model, and the adsorption kinetics fit with the pseudo-second-order model. The emission intensity of the fluorescent adsorbent gradually decreased with the increase of the concentration of Pb2+, and had a good linear correlation. In addition, the mechanism of detection and removal of Pb2+ by fluorescent adsorbents was further demonstrated. The novel three-dimensional structured fluorescent aerogel can be used as a promising adsorbent with good adsorption concentration and sensing ability for Pb2+, which shows great prospects in wastewater.
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Affiliation(s)
- Limin Jing
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Qijun Ding
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| | - Xia Li
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Jiang Lou
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Zhuqing Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Yifei Jiang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Wenjia Han
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Zheng Cheng
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Material Science Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China
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17
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Wang Y, Lv T, Yin K, Feng N, Sun X, Zhou J, Li H. Carbon Dot-Based Hydrogels: Preparations, Properties, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207048. [PMID: 36709483 DOI: 10.1002/smll.202207048] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/31/2022] [Indexed: 06/18/2023]
Abstract
Hydrogels have extremely high moisture content, which makes it very soft and excellently biocompatible. They have become an important soft material and have a wide range of applications in various fields such as biomedicine, bionic smart material, and electrochemistry. Carbon dot (CD)-based hydrogels are based on carbon dots (CDs) and auxiliary substances, forming a gel material with comprehensive properties of individual components. CDs embedding in hydrogels could not only solve their aggregation-caused quenching (ACQ) effect, but also manipulate the properties of hydrogels and even bring some novel properties, achieving a win-win situation. In this review, the preparation methods, formation mechanism, and properties of CD-based hydrogels, and their applications in biomedicine, sensing, adsorption, energy storage, and catalysis -are summarized. Finally, a brief discussion on future research directions of CD-based hydrogels will be given.
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Affiliation(s)
- Yijie Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Tingjie Lv
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Keyang Yin
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Ning Feng
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Xiaofeng Sun
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Jin Zhou
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Hongguang Li
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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18
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Zhang X, Peng J, Qi X, Huang Y, Qiao J, Guo Y, Guo X, Wu Y. Nanocellulose/carbon dots hydrogel as superior intensifier of ZnO/AgBr nanocomposite with adsorption and photocatalysis synergy for Cr(VI) removal. Int J Biol Macromol 2023; 233:123566. [PMID: 36758761 DOI: 10.1016/j.ijbiomac.2023.123566] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
A novel nanocellulose/carbon dots hydrogel (NCH) was fabricated using cellulose nanofibrils (CN), carbon dots (CD) and zinc oxide (ZnO)/silver bromide (AgBr) nanocomposite, where CD enhanced amino group-induced adsorption of hexavalent chromium (Cr(VI)) and promoted the photocatalytic properties of ZnO/AgBr nanocomposite via the transfer of photogenerated electrons, resulting in enhanced efficiency in the removal of Cr(VI) from aqueous solution. The structure, morphology, and physicochemical properties of the prepared NCH were characterized, with the results of adsorption and photocatalysis experiments showing the maximum theoretical adsorption capacity of the NCH to be 315 mg/g, 219 times that of the ZnO/AgBr nanocomposite; the apparent removal rate constant of the NCH was 0.0319 min-1, 11.7 times that of the ZnO/AgBr nanocomposite. Furthermore, the removal performance of NCH was attributed to CD-enhanced synergistic adsorption and photocatalysis effects, supported by characterization and experimental results. This work provides insight into the design and fabrication of a novel adsorptive photocatalyst with CD-enhanced synergistic adsorption and photocatalysis effects for removing Cr(VI) from aqueous solution.
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Affiliation(s)
- Xuefeng Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Junwen Peng
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xinmiao Qi
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yong Huang
- Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jianzheng Qiao
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yucong Guo
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
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19
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Qi X, Peng J, Zhang X, Cai H, Huang Y, Qiao J, Guo Y, Guo X, Wu Y. Computer chip-inspired design of nanocellulose/carbon dots hydrogel as superior intensifier of nano-sized photocatalyst for effective Cr(VI) removal. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130689. [PMID: 36586334 DOI: 10.1016/j.jhazmat.2022.130689] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Hydrogel, a common carrier of photocatalyst that suffers from compromised catalytic efficiency, is still far from practical application. Herein, based on "computer chip-inspired design", a novel nanocellulose/carbon dots hydrogel (NCH) was fabricated as superior intensifier instead of common carrier of sodium titanate nanofibre (STN), where carbon dots (CDs) enhanced amino group-induced adsorption for Cr(VI), promoted photocatalytic properties of STN via transferring the photogenerated electron-hole pairs and improved amino group-induced desorption for reduced product (Cr(III)) via electrostatic repulsion, showing an efficiency of 1 + 1 > 2. Adsorption and photocatalysis experiments demonstrated superior removal performance of the NCH incorporating STN, as shown by theoretical maximum adsorption capacity of 425.74 mg/g and kinetic constant of 0.0374 min-1 in the photocatalytic process, which was nearly 6.6 and 7.3 times of STN. A series of experiments was conducted to confirm the novel mechanism of CDs-enhanced adsorption-photocatalysis-desorption synergy. This work not only provides new insights into the fabrication of a superior intensifier for nanosized photocatalyst, but also proposes one new mechanism of CDs-enhanced adsorption-photocatalysis-desorption synergy, which is helpful for designing and optimizing nanosized photocatalyst.
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Affiliation(s)
- Xinmiao Qi
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Junwen Peng
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xuefeng Zhang
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Haoxuan Cai
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yong Huang
- Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jianzheng Qiao
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yucong Guo
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xin Guo
- College of Science, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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20
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Zhang NX, Liu C, He ZL, Li Q, Chen S. One-Pot Synthesis of Robust Fluorescent Nanocomposite Gel via Frontal Polymerization. Macromol Rapid Commun 2023; 44:e2200832. [PMID: 36574621 DOI: 10.1002/marc.202200832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/01/2022] [Indexed: 12/28/2022]
Abstract
Fluorescent nanocomposite gels have attracted increasing attention due to their excellent optical properties, as well as enhanced mechanical strength originating from the nanoparticles. At present, two-step methods are usually employed, where fluorescent nanoparticles are firstly prepared, followed by mixing with gel precursor to achieve the final products after gelation, which suffer from the disadvantages of a tedious and time-consuming process. Thus, the development of a facile strategy is highly desirable, which still remains an obstacle. Herein, a new one-pot synthesis method towards robust fluorescent nanocomposite gels via frontal polymerization (FP) is proposed, where small molecular precursors (citric acid (CA) and urea, or L-cysteine) and gel precursor (vinyl monomers) are mixed together as co-reactants. During the FP process, a lot of heat release gives rise to the generation of carbonized polymer dots (CPDs). Thus, companying with the propagating of the polymerization, the production of fluorescent CPDs/gel composite is completed. In addition, as a nanofiller, CPDs dramatically enhance the mechanical property of the CPDs/gel composite. This work proposes a new fast and efficient one-pot strategy for the production of CPDs/gel composite, which will guide the development of high-performance polymer nanocomposites through an in situ synchronous reaction fashion.
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Affiliation(s)
- Nian-Xiang Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China
| | - Chang Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China
| | - Zi-Liang He
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China
| | - Qing Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China
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21
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Shen J, Gu H, He Z, Lin W. Wattle-Bark-Tannin-Derived Carbon Quantum Dots as Multi-Functional Nanomaterials for Intelligent Detection of Cr 6+ Ions, Bio-Imaging, and Fluorescent Ink Applications. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- Jialu Shen
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Haibin Gu
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Zhen He
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Wei Lin
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
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22
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Azeem MK, Rizwan M, Islam A, Rasool A, Khan SM, Khan RU, Rasheed T, Bilal M, Iqbal HMN. In-house fabrication of macro-porous biopolymeric hydrogel and its deployment for adsorptive remediation of lead and cadmium from water matrices. ENVIRONMENTAL RESEARCH 2022; 214:113790. [PMID: 35809637 DOI: 10.1016/j.envres.2022.113790] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/24/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
A novel adsorbent was prepared by blending chitosan (CS) and acrylic acid (AA) while using formaldehyde as a cross linker in the form of hydrogel beads. The adsorption properties of these hydrogel beads for the removal of toxic metal ions (Pb2+ and Cd2+) from aqueous solutions were evaluated. The hydrogel beads have a 3D macro-porous structure whose -NH2 groups were considered to be the dominant binding specie for Cd and Pb ions. The equilibrium adsorption capacity (qe) of beads was significantly affected by the mass ratio of sorbent and sorbate. The percentage removal of Cd and Pb ions was observed to be enhanced with the increase in sorbate concentration. The hydrogel beads maintained good adsorption properties at adsorption-desorption equilibrium. The Langmuir and Freundlich models were used to elaborate the isotherms as well as isotherm constants. Adsorption isothermal data is well explained by the Freundlich model. The data of experimental kinetics is interrelated with the second-order kinetic model, which showed that the chemical sorption phenomenon is the rate limiting step. The results of intraparticle diffusion model described the adsorption process occurred on a porous substance that proved chitosan/Formaldehyde beads to be the favorable adsorbent.
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Affiliation(s)
- Muhammad Khalid Azeem
- Institute of Polymer and Textile Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Rizwan
- Department of Chemistry, University of Lahore, Lahore, 54000, Pakistan
| | - Atif Islam
- Institute of Polymer and Textile Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Atta Rasool
- School of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Shahzad Maqsood Khan
- Institute of Polymer and Textile Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Rafi Ullah Khan
- Institute of Polymer and Textile Engineering and Technology, University of the Punjab, Lahore, Pakistan
| | - Tahir Rasheed
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico.
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23
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Huang C, Wang H, Xu Y, Ma S, Gong B, Ou J. Carbon dot-functionalized macroporous adsorption resin for bifunctional ultra-sensitive detection and fast removal of iron(III) ions. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3727-3738. [PMID: 36106929 DOI: 10.1039/d2ay01366e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Heavy metal pollution has spread around the world with the development of industry, posing a major threat to human health. It is urgent to design and fabricate bifunctional materials for detection and adsorption of heavy metal ions. Herein, poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) microspheres, a kind of common macroporous adsorption resin (MAR), were employed as the matrix, and carbon dots (CDs) with excellent optical properties were grafted onto the surface of MAR by surface-initiated atom transfer radical polymerization (SI-ATRP) and photo-initiated "thiol-yne" click chemistry. The synthesized MAR@poly(PA)@CD could produce fluorescence quenching with Fe3+. A simple fluorescence spectrometric method for detection of Fe3+ was established. The fluorescence intensity of MAR@poly(PA)@CD decreased linearly with the concentration of Fe3+ in the range of 0-70 nmol L-1, with a limit of detection (LOD) of 6.6 nmol L-1, which had the potential for trace detection. In addition, after SI-ATRP modification, many adsorption sites were generated on the surface of MAR, and the adsorption capacity for Fe3+ was 23.8 mg g-1. Isothermal and kinetic adsorption experiments were more consistent with the Langmuir model (r = 0.9992) and pseudo-second-order model (r = 0.9902), indicating that the adsorption was monolayer adsorption and chemical adsorption, respectively. MAR@poly(PA)@CD with dual functions of detecting and adsorbing Fe3+ was successfully prepared, showing great application prospects in the environmental field.
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Affiliation(s)
- Chao Huang
- School of Chemistry and Chemical Engineering, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China.
| | - Hongwei Wang
- School of Chemistry and Chemical Engineering, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China.
| | - Yunjia Xu
- School of Chemistry and Chemical Engineering, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China.
| | - Shujuan Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Bolin Gong
- School of Chemistry and Chemical Engineering, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China.
| | - Junjie Ou
- School of Chemistry and Chemical Engineering, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China.
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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24
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Li X, Li M, Shi Q, Guo H, Wang L, Guo X, Chen Z, Sessler JL, Xiao H, James TD. Exhausted Cr(VI) Sensing/Removal Aerogels Are Recycled for Water Purification and Solar-Thermal Energy Generation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201949. [PMID: 35927028 DOI: 10.1002/smll.202201949] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/09/2022] [Indexed: 06/15/2023]
Abstract
Heavy metal pollution has resulted in numerous environmental challenges. However, classic approaches, involving the use of solid adsorbents are subject to limitations, including the high energy consumption required for processing before and after use. Accordingly, strategies that facilitate the use of metal capture media that extends beyond waste remediation are attractive. Herein, a porous fluorescent aerogel (CPC aerogel) is constructed by immersing amino-based carbon dots (CDs-NH2 ) into a polyethyleneimine (PEI)/carboxymethylated cellulose (CMC) aerogel network for the simultaneous detection and adsorption of Cr(VI). Adsorption experiments confirm that the CMC/PEI containing CDs-NH2 aerogel (CPC aerogel) exhibits good Cr(VI) extraction capacity, and can reach a level that conforms with industrial water safety standards. In addition, the CPC aerogel can continuously detect and remove Cr(VI) at high flux. Following Cr(VI) absorption, the CPC aerogel may be vulcanized (MSx -CPC gel) and used for solar thermoelectric generation resulting in power generation. Additionally, the MSx -CPC gel can be used for solar steam generation and exhibits excellent evaporation rates of ≈1.31 kg m-2 h-1 under one sun irradiation. The results serve to underscore how materials designed for metal ion recognition and adsorption once exhausted can be exploited to provide materials for solar thermoelectric power generation and seawater desalination.
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Affiliation(s)
- Xiaoning Li
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
| | - Meng Li
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
| | - Quanyu Shi
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
| | - Hongmin Guo
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
| | - Lidong Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China
| | - Xiaolin Guo
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Material Science and Engineering College, Northeast Forestry University, Hexing Road 26, Harbin, 150040, P. R. China
| | - Zhijun Chen
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Material Science and Engineering College, Northeast Forestry University, Hexing Road 26, Harbin, 150040, P. R. China
| | - Jonathan L Sessler
- Department of Chemistry, University of Texas at Austin, 105 E 24th Street, Austin, A5300, USA
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, 15 Dineen Drive, Fredericton, NB, E3B 5A3, Canada
| | - Tony D James
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
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25
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Xu J, Guo Y, Gong T, Cui K, Hou L, Yuan C. B, N co-doped carbon dots based fluorescent test paper and hydrogel for visual and efficient dual ion detection. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Wu S, Yin Y, Sun C, Ma C. Novel Paper-Based Fluorescent Sensor Based on N-Doped Carbon Quantum Dots (N-CQDs) and Cotton Fiber Paper (CFP) with High Selectivity and Sensitivity for the Visual Determination of Mercury (II) in Environmental Waters. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2117371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Shunwei Wu
- School of Chemical Engineering, Qinghai University, Xining, China
| | - Yongzheng Yin
- School of Chemical Engineering, Qinghai University, Xining, China
| | - Chunyan Sun
- School of Chemical Engineering, Qinghai University, Xining, China
| | - Chenghai Ma
- School of Chemical Engineering, Qinghai University, Xining, China
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27
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Sethi S, Thakur S, Sharma D, Singh G, Sharma N, Kaith BS, Khullar S. Malic acid cross-linked chitosan based hydrogel for highly effective removal of chromium (VI) ions from aqueous environment. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Carbon Quantum Dots-Based Fluorescent Hydrogel Hybrid Platform for Sensitive Detection of Iron Ions. J CHEM-NY 2022. [DOI: 10.1155/2022/3737646] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, we prepared novel fluorescent carbon quantum dots/hydrogel nanocomposite material (CQDsHG) with good adsorption and stable fluorescence detection of Fe3+. The materials were subsequently characterized according to their morphological features, chemical composition, adsorption, and optical properties. The carbon quantum dots (CQDs) were prepared using a microwave-assisted hydrothermal method in no more than 15 min, and the as-prepared CQDs exhibited excellent water solubility, as well as emitted strong bright blue fluorescence with an ultrahigh quantum yield of 93.60%. The CQDs were then loaded into a hydrogel (HG) using the sol-gel method to obtain a functional CQDsHG. The CQDsHG exhibited high adsorption amounts (31.94 mg/g) and a good quenching response for Fe3+, thus, it could be used as a sensor to selectively detect Fe3+ in the linear range of 0–150 μM with a detection limit of 0.24 μM. We observed minimal difference in the fluorescence lifetimes between the CQDsHG with and without a quencher (Fe3+), with values of 5.816 ns and 5.824 ns, respectively, confirming that Fe3+ was statically quenched on CQDsHG. The results indicated that the innovative combination of CQDs and HG can improve the synergistic performance of each component for the adsorption and quantitative detection of heavy metal ions in the aqueous environment.
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Rodwihok C, Tam TV, Choi WM, Suwannakaew M, Woo SW, Wongratanaphisan D, Kim HS. Preparation and Characterization of Photoluminescent Graphene Quantum Dots from Watermelon Rind Waste for the Detection of Ferric Ions and Cellular Bio-Imaging Applications. NANOMATERIALS 2022; 12:nano12040702. [PMID: 35215030 PMCID: PMC8878562 DOI: 10.3390/nano12040702] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022]
Abstract
Graphene quantum dots (GQDs) were synthesized using watermelon rind waste as a photoluminescent (PL) agent for ferric ion (Fe3+) detection and in vitro cellular bio-imaging. A green and simple one-pot hydrothermal technique was employed to prepare the GQDs. Their crystalline structures corresponded to the lattice fringe of graphene, possessing amide, hydroxyl, and carboxyl functional groups. The GQDs exhibited a relatively high quantum yield of approximately 37%. Prominent blue emission under UV excitation and highly selective PL quenching for Fe3+ were observed. Furthermore, Fe3+ could be detected at concentrations as low as 0.28 μM (limit of detection), allowing for high sensitivity toward Fe3+ detection in tap and drinking water samples. In the bio-imaging experiment, the GQDs exhibited a low cytotoxicity for the HeLa cells, and they were clearly illuminated at an excitation wavelength of 405 nm. These results can serve as the basis for developing an environment-friendly, simple, and cost-effective approach of using food waste by converting them into photoluminescent nanomaterials for the detection of metal ions in field water samples and biological cellular studies.
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Affiliation(s)
- Chatchai Rodwihok
- Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (C.R.); (M.S.); (S.W.W.)
| | - Tran Van Tam
- School of Chemical Engineering, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 44160, Korea; (T.V.T.); (W.M.C.)
| | - Won Mook Choi
- School of Chemical Engineering, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 44160, Korea; (T.V.T.); (W.M.C.)
| | - Mayulee Suwannakaew
- Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (C.R.); (M.S.); (S.W.W.)
| | - Sang Woon Woo
- Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (C.R.); (M.S.); (S.W.W.)
| | - Duangmanee Wongratanaphisan
- Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Han S. Kim
- Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (C.R.); (M.S.); (S.W.W.)
- Correspondence:
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30
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Phenol Adsorption Mechanism of Organically Modified Bentonite and Its Microstructural Changes. SUSTAINABILITY 2022. [DOI: 10.3390/su14031318] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Bentonite was modified with cetyltrimethylammonium bromide (CTAB). The organically modified bentonite (OMB) was used to remove phenol from aqueous solution, the microstructural changes were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM), and phenol adsorption kinetic was obtained using batch adsorption test results. The results indicated that the rate of adsorption of phenol onto the OMB was positively correlated with the initial concentration, and the maximum adsorption capacity was found to be 10.1 mg/g at the initial concentration of 150 mg/L at 25 °C and pH 10. The investigations of adsorption kinetics models showed that the adsorption kinetic was better reflected by the pseudo-second-order kinetic model. Furthermore, the properties of the OMB samples with different adsorption times were obtained by SEM and XRD. The statistic analysis revealed that the pore diameter of the OMB samples decreased with the increasing adsorption time and gradually reached equilibrium.
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31
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Perumal S, Atchudan R, Thirukumaran P, Yoon DH, Lee YR, Cheong IW. Simultaneous removal of heavy metal ions using carbon dots-doped hydrogel particles. CHEMOSPHERE 2022; 286:131760. [PMID: 34352536 DOI: 10.1016/j.chemosphere.2021.131760] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/30/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal ions (HMI) have attracted worldwide concern due to their serious environmental pollution which led to the risk of health conditions. From Red Malus floribunda fruits, nitrogen-doped carbon dots (N-CDs) were prepared, followed by hybrid-spherical shaped hydrogel particles (CGCDs) were prepared. The prepared CGCDs were utilized as adsorbents for HMI-(Hg(II), Cd(II), Pb(II), and Cr(III)) from water. N-CDs with about 4.0 nm in diameter were characterized by various techniques such as field emission-scanning electron microscopy (FE-SEM) and attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR) that confirm the presence of nitrogen, oxygen, and carbon functionalities. The prepared spherical CGCDs were characterized very well before it was used as HMI adsorbents. The sizes of the CGCDs were ranges between 20 and 300 μm and the degree of swelling was calculated as 1320 %. ATR-FTIR and X-ray diffraction analyses reveal the presence of N-CDs in CGCDs. Further, FE-SEM confirms the spherical shape morphology of CGCDs. Three different concentrations of HMI solutions were 500 mg/L, 1000 mg/L, and 1500 mg/L. Hg(II) adsorbed proficiently by CGCDs in single metal ion systems with ~72 % and almost complete removal of Hg(II) ions (99 %) in multiple metal ion systems was observed. Moreover, all metal ions Hg(II), Cd(II), Pb(II), and Cr(III) were efficiently (>70 %) removed in multiple systems by CGCDs. After HMI adsorption experiments, the elemental mapping from FE-SEM and X-ray photoelectron spectroscopy studies conveys the presence of HMI on CGCDs. This suggests that CGCDs would be a suitable adsorbent for the simultaneous removal of multiple HMI from wastewater.
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Affiliation(s)
- Suguna Perumal
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu, 41566, Republic of Korea; School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | | | - Dong Ho Yoon
- R& D Center, Kuk-Il Paper Mfg. Co., Ltd., Baekok-daero 563, Cheoin-gu, Yongin, 17128, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - In Woo Cheong
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu, 41566, Republic of Korea.
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32
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Dadashi J, Ghasemzadeh MA, Salavati-Niasari M. Recent developments in hydrogels containing copper and palladium for the catalytic reduction/degradation of organic pollutants. RSC Adv 2022; 12:23481-23502. [PMID: 36090397 PMCID: PMC9386442 DOI: 10.1039/d2ra03418b] [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: 06/01/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022] Open
Abstract
The elimination of toxic and hazardous contaminants from different environmental media has become a global challenge, causing researchers to focus on the treatment of pollutants. Accordingly, the elimination of inorganic and organic pollutants using sustainable, effective, and low-cost heterogeneous catalysts is considered as one of the most essential routes for this aim. Thus, many efforts have been devoted to the synthesis of novel compounds and improving their catalytic performance. Recently, palladium- and copper-based hydrogels have been used as catalysts for reduction, degradation, and decomposition reactions because they have significant features such as high mechanical strength, thermal stability, and high surface area. Herein, we summarize the progress achieved in this field, including the various methods for the synthesis of copper- and palladium-based hydrogel catalysts and their applications for environmental remediation. Moreover, palladium- and copper-based hydrogel catalysts, which have certain advantages, including high catalytic ability, reusability, easy work-up, and simple synthesis, are proposed as a new group of effective catalysts. The elimination of toxic and hazardous contaminants from different environmental media has become a global challenge, causing researchers to focus on the treatment of pollutants.![]()
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Affiliation(s)
- Jaber Dadashi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
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Yan J, Li K. A magnetically recyclable polyampholyte hydrogel adsorbent functionalized with β-cyclodextrin and graphene oxide for cationic/anionic dyes and heavy metal ion wastewater remediation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119469] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Zeng H, Hu Z, Peng C, Deng L, Liu S. Effective Adsorption and Sensitive Detection of Cr(VI) by Chitosan/Cellulose Nanocrystals Grafted with Carbon Dots Composite Hydrogel. Polymers (Basel) 2021; 13:polym13213788. [PMID: 34771345 PMCID: PMC8588005 DOI: 10.3390/polym13213788] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 11/25/2022] Open
Abstract
Due to its lethal effect on the human body and other creatures, Cr(VI) ions have attained widespread public attention, and an effective adsorbent for removing Cr(VI) ions is vital. Chitosan (CS)/cellulose nanocrystals grafted with carbon dots (CNCD) composite hydrogel with strong sorption ability and sensitive detection ability for Cr(VI) was formed. The cellulose nanocrystals (CN) offered a natural skeleton for assembling 3D porous structures, and then improved the sorption ability for Cr(VI); moreover, carbon dots (CD) acted as a fluorescent probe for Cr(VI) and provided Cr(VI) adsorption sites. With a maximum adsorption capacity of 217.8 mg/g, the CS/CNCD composite hydrogel exhibited efficient adsorption properties. Meanwhile, with a detection limit of 0.04 μg/L, this hydrogel was used for selective and quantitative detection of Cr(VI). The determination of Cr(VI) was based on the inner filter effect (IFE) and static quenching. This hydrogel retained its effective adsorption ability even after four repeated regenerations. Furthermore, the economic feasibility of the CS/CNCD composite hydrogel over activated carbon was confirmed using cost analysis. This study provided one new method for producing low-cost adsorbents with effective sorption and sensitive detection for Cr(VI).
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Affiliation(s)
- Hua Zeng
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Z.H.)
| | - Zhiyuan Hu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Z.H.)
| | - Chang Peng
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China; (C.P.); (L.D.)
| | - Lei Deng
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China; (C.P.); (L.D.)
| | - Suchun Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Z.H.)
- Correspondence:
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35
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Zhang T, Chen J, Xiong H, Yuan Z, Zhu Y, Hu B. Constructing new Fe 3O 4@MnO x with 3D hollow structure for efficient recovery of uranium from simulated seawater. CHEMOSPHERE 2021; 283:131241. [PMID: 34470731 DOI: 10.1016/j.chemosphere.2021.131241] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/20/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Enrichment of uranium from seawater is a promising method for addressing the energy crisis. Current technologies are generally not effective for enriching uranium from seawater because its concentration in seawater is low. In this study, new Fe3O4@MnOx with 3D hollow structure, which is capable of enriching low concentration uranium, was prepared via a novel redox etching method. The physicochemical characteristics of Fe3O4@MnOx were studied with TEM, HRTEM, SEAD, FTIR, XRD, and N2 adsorption-desorption analysis. Dynamic kinetic studies of different initial U(VI) concentrations revealed that the pseudo-second-order model fit the sorption process better, and the sorption rates of Fe3O4@MnOx in 1, 10, and 25 mg/L U(VI) solution were 0.0124, 0.00298, and 0.000867 g/mg·min, respectively. Isothermal studies showed that the maximum sorption amounts were 50.09, 56.27, and 64.62 mg/g for 1, 10, and 25 mg/L U(VI), respectively, at pH 5.0 and 313 K, suggesting that Fe3O4@MnOx could effectively enrich low concentration U(VI) from water. The sorption amount of U(VI) did not significantly decrease in the presence of Na+, Mg2+, and Ca2+. HRTEM, FTIR, and XPS results demonstrated that Fe(II) and Mn/Fe-O-H active sites in Fe3O4@MnOx were accounted for the high and specific enrichment efficiency. A column experiment was conducted to evaluate the U(VI) sorption efficiency of Fe3O4@MnOx in simulated seawater. The U(VI) sorption efficiency remained above 80% in 28 days run. Our findings demonstrate that Fe3O4@MnOx has extraordinary potential for the enrichment of uranium from simulated seawater.
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Affiliation(s)
- Tingting Zhang
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China; College of Civil Engineering, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Jiemin Chen
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Huiyan Xiong
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China; College of Civil Engineering, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Zongdi Yuan
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Yuling Zhu
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China.
| | - Baowei Hu
- College of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China.
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Liu M, Li T, Zhang C, Zheng Y, Wu C, Zhang J, Zhang K, Zhang Z. Fluorescent carbon dots embedded in mesoporous silica nanospheres: A simple platform for Cr(VI) detection in environmental water. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125699. [PMID: 33773242 DOI: 10.1016/j.jhazmat.2021.125699] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/06/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
In this work, amino-functionalized mesoporous silica nanospheres (NH2-mSiO2) anchored with carbon dots (CDs) have been designed to construct an outstanding fluorescent sensor for heavy metal detection. Uniform mSiO2 was chosen to provide an optically transparent scaffold for immobilizing CDs. With the help of amino group modification on the surface of silica, benzene-1,4-diboronic acid (BA) was used as raw material to load CDs in the pores of mSiO2 by one-step solvothermal method. The proposed nanohybrid can solve the problem of aggregation-induced fluorescence quenching, leading to bright blue emission at 450 nm. Meanwhile, the fluorescence of NH2-mSiO2@CDs showed high sensitivity to Cr(VI) in acetic acid buffer solution (pH = 4) with detection limit as low as 5 nM by inner filter effect (IFE) and electrostatic interaction (EI). The proposed method can also be extended to other CDs-based detection systems for chemical/biological sensors.
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Affiliation(s)
- Meilin Liu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Taotao Li
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Cheng Zhang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China.
| | - Yu Zheng
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Chenqing Wu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Jian Zhang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Kui Zhang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China.
| | - Zhongping Zhang
- Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
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Yuan G, Li F, Li K, Liu J, Li J, Zhang S, Jia Q, Zhang H. Research Progress on Photocatalytic Reduction of Cr(VI) in Polluted Water. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200317] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gaoqian Yuan
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Faliang Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
- Jiangxi Engineering Research Center of Industrial Ceramics, Pingxiang 337022, P. R. China
| | - Kezhuo Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Jie Liu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Junyi Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Shaowei Zhang
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Quanli Jia
- Henan Key Laboratory of High Temperature Functional Ceramics, Zhengzhou University, 75 Daxue Road, Zhengzhou 450052, P. R. China
| | - Haijun Zhang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
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Zhang S, Pei Y, Li M, Li W, Su K, Chen J, Yang H. Insight into the adsorption of Cr( vi) on functionalized carboxymethyl cellulose-based sponge via experimental and theoretical calculations. NEW J CHEM 2021. [DOI: 10.1039/d1nj04012j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PEI–PAM–CM with a sponge-like structure can effectively remove Cr(vi) at low concentration by electrostatic attraction and chemical binding.
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Affiliation(s)
- Shengli Zhang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Yanbo Pei
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Menglin Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Wei Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Kai Su
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Junmin Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
| | - Hongwei Yang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China
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