1
|
Wei Y, Zhou S, Wei J, Cai H, Hou Y, Jia Z, Su X. Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9651-9660. [PMID: 38656101 DOI: 10.1021/acs.langmuir.4c00469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
In this paper, a carbon dot hydrogel composite (CDs-Hy) capable of efficiently removing Pb(II) was prepared by hydrogen bonding self-assembly in combination with carbon dots and a hydrogel. CDs-Hy was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS), and the effect of the adsorption conditions on the adsorption efficiency of CDs-Hy was studied. The results of the study showed that the incorporation of carbon dots, on the one hand, significantly increased the adsorption capacity of the material. On the other hand, it can increase the stability of hydrogels in aqueous solution. The possible adsorption mechanisms were further verified as ion exchange and coordination. CDs-Hy is a novel adsorbent material capable of removing Pb2+ efficiently, which can be reused several times with high stability.
Collapse
Affiliation(s)
- Yuan Wei
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Shunli Zhou
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Ju Wei
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Huishan Cai
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Yongrui Hou
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Zhenfu Jia
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Xiaodong Su
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| |
Collapse
|
2
|
Zhang X, Zhang K, Shi Y, Xiang H, Yang W, Zhao F. Surface engineering of multifunctional nanostructured adsorbents for enhanced wastewater treatment: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170951. [PMID: 38367722 DOI: 10.1016/j.scitotenv.2024.170951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/20/2024] [Accepted: 02/11/2024] [Indexed: 02/19/2024]
Abstract
Rapid urbanization and industrialization have significantly contributed to the contamination of the environment through the discharge of wastewater containing various pollutants. The development of high-performance surface functional nanostructured adsorbents is of wide interest for researchers. Therefore, we explore the significant advancements in this field, focusing on the efficiency of nanostructured materials, as well as their nanocomposites, for wastewater treatment applications. The crucial role of surface modification in enhancing the affinity of these nanostructured adsorbents towards targeted pollutants, addressing a key bottleneck in the utilization of nanomaterials for wastewater treatment, was specifically emphasized. In addition to highlighting the advantages of surface engineering in enhancing the efficiency of nanostructured adsorbents, this review also provides a comprehensive overview of the limitations and challenges associated with surface-modified nanostructured adsorbents, including high cost, low stability, poor scalability, and potential nanotoxicity. Addressing these limitations is essential for realizing the commercial viability of these state-of-the-art materials for large-scale wastewater treatment applications. This review also thoroughly discusses the potential scalability and environmental safety aspects of surface-modified nanostructured adsorbents, offering insights into their future prospects for wastewater treatment. It is believed that this review will contribute significantly to the existing body of knowledge in the field and provide valuable information for researchers and practitioners working in the area of environmental remediation and nanomaterials.
Collapse
Affiliation(s)
- Xiaowei Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kejing Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yan Shi
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China
| | - Hongrui Xiang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Weichun Yang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China
| | - Feiping Zhao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China.
| |
Collapse
|
3
|
Silva EC, Gomes CG, Pina J, Pereira RFP, Murtinho D, Fajardo AR, Valente AJM. Carbon quantum dots-containing poly(β-cyclodextrin) for simultaneous removal and detection of metal ions from water. Carbohydr Polym 2024; 323:121464. [PMID: 37940321 DOI: 10.1016/j.carbpol.2023.121464] [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: 08/03/2023] [Revised: 09/18/2023] [Accepted: 10/05/2023] [Indexed: 11/10/2023]
Abstract
This study investigates the synthesis and characterization of supramolecular composites composed of poly(β-cyclodextrin-co-citric acid) and carbon quantum dots (QDs). These composites serve a dual purpose as adsorbents and photoluminescent probes for divalent metal ions, including Ni(II), Cu(II), Cd(II), and Pb(II), which can have detrimental effects on the environment. Various characterization techniques were employed to confirm the successful synthesis of the composites and the interaction between cyclodextrins and QDs. By using mathematical tools, optimal conditions for metal adsorption were determined, resulting in the composites exhibiting high adsorption capacities, reaching 220 mg/g, and impressive removal efficiencies exceeding 90 % for Ni(II) and Cu(II). The supramolecular composites also exhibit selective adsorption of metal ions with small ionic radio and can be reused with minimal loss of efficiency. In addition to their adsorption capabilities, these composites display luminescence quenching upon the adsorption of metal ions, which can be utilized for sensing applications. Spectroscopic evaluation reveals Stern-Volmer quenching constants for the accessible fraction of QDs in the range of 3777 to 13,359 M-1. The high stability of QDs on the composites allows for long-term storage. In summary, this original supramolecular composite shows promise for simultaneously monitoring and treating water and wastewater, making it a valuable tool in environmental applications.
Collapse
Affiliation(s)
- Emilly C Silva
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão, 96010-900, Pelotas-RS, Brazil; Chemistry Center and Chemistry Department, University of Minho, 4710-057 Braga, Portugal
| | - Charlie G Gomes
- Laboratório de Metrologia Química (LabMequi), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão, 96010-900, Pelotas-RS, Brazil
| | - João Pina
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - Rui F P Pereira
- Chemistry Center and Chemistry Department, University of Minho, 4710-057 Braga, Portugal
| | - Dina Murtinho
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal
| | - André R Fajardo
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão, 96010-900, Pelotas-RS, Brazil.
| | - Artur J M Valente
- University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal.
| |
Collapse
|
4
|
Zhou W, Hu W, Zhan Q, Zhang M, Liu X, Hussain W, Yu H, Wang S, Zhou L. Novel hemoperfusion adsorbents based on collagen for efficient bilirubin removal - A thought from yellow skin of patients with hyperbilirubinemia. Int J Biol Macromol 2023; 253:127321. [PMID: 37820900 DOI: 10.1016/j.ijbiomac.2023.127321] [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: 08/02/2023] [Revised: 10/06/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023]
Abstract
Hemoperfusion is a well-developed method for removing bilirubin from patients with hyperbilirubinemia. The performance of adsorbents is crucial during the process. However, most adsorbents used for bilirubin removal are not suitable for clinical applications, because they either have poor adsorption performance or limited biocompatibility. Patients with hyperbilirubinemia usually have distinctive yellow skin, indicating that collagen, a primary component of the skin, may be an effective material for absorbing bilirubin from the blood. Based on this idea, we designed and synthesized collagen (Col) and collagen-polyethyleneimine (Col-PEI) microspheres and employed them as hemoperfusion adsorbents for bilirubin removal. The microspheres have an efficient adsorption rate, higher bilirubin adsorption capacity, and competitive adsorption of bilirubin in the bilirubin/bovine serum albumin (BSA) solution. The maximum adsorption capacities of Col and Col-PEI microspheres for bilirubin are 150.2 mg/g and 258.4 mg/g, respectively, which are higher than those of most traditional polymer microspheres. Additionally, the microspheres exhibit excellent blood compatibility originating from collagen. Our study provides a new collagen-based strategy for the hemoperfusion treatment of hyperbilirubinemia.
Collapse
Affiliation(s)
- Wan Zhou
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wenbin Hu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qiancheng Zhan
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Minjun Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xinjie Liu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wajid Hussain
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huibin Yu
- Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan 442099, China
| | - Shenqi Wang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Lei Zhou
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| |
Collapse
|
5
|
Gao J, Xu P, Qiao L, Tao Y, Xiao Y, Qin H, Zhu Y, Zhang Y. Triplex DNA Helix Sensor Based on Reduced Graphene Oxide and Electrodeposited Gold Nanoparticles for Sensitive Lead(II) Detection. TOXICS 2023; 11:795. [PMID: 37755805 PMCID: PMC10536607 DOI: 10.3390/toxics11090795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023]
Abstract
A triplex DNA electrochemical sensor based on reduced graphene oxide (rGO) and electrodeposited gold nanoparticles (EAu) was simply fabricated for Pb2+ detection. The glass carbon electrode (GCE) sequentially electrodeposited with rGO and EAu was further modified with a triplex DNA helix that consisted of a guanine (G)-rich circle and a stem of triplex helix based on T-A•T base triplets. With the existence of Pb2+, the DNA configuration which was formed via the Watson-Crick and Hoogsteen base pairings was split and transformed into a G-quadruplex. An adequate electrochemical response signal was provided by the signal indicator methylene blue (MB). The proposed sensor demonstrated a linear relationship between the differential pulse voltammetry (DPV) peak currents and the logarithm of Pb2+ concentrations from 0.01 to 100.00 μM with a detection limit of 0.36 nM. The proposed sensor was also tested with tap water, river and medical wastewater samples with qualified recovery and accuracy and represented a promising method for Pb2+ detection.
Collapse
Affiliation(s)
- Jing Gao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Piao Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Lu Qiao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Yani Tao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Yao Xiao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Hong Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Yuan Zhu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Yi Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (J.G.); (P.X.); (L.Q.); (Y.T.); (Y.X.); (H.Q.)
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| |
Collapse
|