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Wang W, Xue J, Zhang L, You J. Influence of conditioner and straw on the herbaceous plant-based phytoremediation copper tailings: a field trial at Liujiagou tailings pond, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:25059-25075. [PMID: 38462565 DOI: 10.1007/s11356-024-32812-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/03/2024] [Indexed: 03/12/2024]
Abstract
A field trial was performed to carry out an enhanced phytoremediation technique for multi-metal contaminated copper tailings by Sudan grass (Sorghum Sudanese), ryegrass (Lolium perenne L.), and Bermuda grass (Cynodon dactylon), using conditioner (TH-LZ01) and straw combination into composite amendments as soil amendments, aimed to obtain the maximum of phytoremediation effect. The results showed that compared with untreated herbaceous plants, the application of conditioner and straw planted with herbaceous plants reduced the pH and conductivity and increased the organic matter and water content of the copper tailings to different degrees. With the addition of conditioner and straw, the DTPA-Cd, DTPA-Cu, DTPA-Pb, and DTPA-Zn contents in the copper tailings showed a decreasing trend compared with the untreated group. The herbaceous plants were promoted to reduce the percentage contents of acid soluble fractions Cd, Cu, Pb, and Zn and to increase the percentage contents of reducible, oxidizable, and residual fractions heavy metals (Cd, Cu, Pb, and Zn) in the copper tailings to different degrees. The contents of Cd, Cu, Pb, and Zn in the underground part of herbaceous plants were higher than those in the aboveground part, and the contents of Cd, Cu, Pb, and Zn in the aboveground part and underground part decreased after adding conditioner and straw, which indicated that the conditioner and straw inhibited the transport of heavy metals in the plant. Furthermore, the principal component analysis showed that the application of conditioner and straw with planting ryegrass had more potential for improving the physicochemical properties of copper tailings and reducing heavy metal toxicity, followed by Bermuda grass and Sudan grass.
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Affiliation(s)
- Weiwei Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
| | - Jinchun Xue
- School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, Jiangxi, China.
| | - Liping Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China
| | - Jiajia You
- School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang, 330013, Jiangxi, China
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Najafi M, Bastami TR, Binesh N, Ayati A, Emamverdi S. Sono-sorption versus adsorption for the removal of congo red from aqueous solution using NiFeLDH/Au nanocomposite: Kinetics, thermodynamics, isotherm studies, and optimization of process parameters. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yadav S, Chauhan M, Jacob M, Malhotra P. Distinguished performance of biogenically synthesized reduced-graphene-oxide-based mesoporous Au–Cu 2O/RGO ternary nanocomposites for sonocatalytic reduction of nitrophenols in water. NEW J CHEM 2022. [DOI: 10.1039/d2nj00745b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au-Cu2O supported on reduced graphene oxide was synthesised employing a novel one pot greener approach using sugarcane bagasse waste and Fehling’s solution. It was used for catalytic reduction of nitrophenols under ultrasonic irradiation in water.
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Affiliation(s)
- Sushma Yadav
- Department of Chemistry, Daulat Ram College, University of Delhi, Delhi-110007, India
| | - Maruf Chauhan
- Department of Chemistry, Daulat Ram College, University of Delhi, Delhi-110007, India
| | - MercyKutty Jacob
- Department of Chemistry, Shri. Venkateswara College, University of Delhi, Delhi-110007, India
| | - Priti Malhotra
- Department of Chemistry, Daulat Ram College, University of Delhi, Delhi-110007, India
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Ma Y, Wei X, Aishanjiang K, Fu Y, Le J, Wu H. Boosting the photocatalytic performance of Cu 2O for hydrogen generation by Au nanostructures and rGO nanosheets. RSC Adv 2022; 12:31415-31423. [DOI: 10.1039/d2ra04132d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/30/2022] [Indexed: 11/07/2022] Open
Abstract
Au@Cu2O/rGO exhibited boosting photocatalytic performance due to the yolk–shelled structure, abundant hot charges on Au, and quick charge transfer by rGO.
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Affiliation(s)
- Yujie Ma
- Collaborative Innovation Center for Biomedicine, Shanghai University of Medicine & Health Sciences, Shanghai, 201318, China
| | - Xindong Wei
- ShuGuang Hospital Affiliated to Shanghai University of Chinese Traditional Medicine, Shanghai, 201203, China
| | - Kedeerya Aishanjiang
- Department of Transplantation, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yi Fu
- Collaborative Innovation Center for Biomedicine, Shanghai University of Medicine & Health Sciences, Shanghai, 201318, China
| | - Jiamei Le
- Collaborative Innovation Center for Biomedicine, Shanghai University of Medicine & Health Sciences, Shanghai, 201318, China
| | - Hailong Wu
- Collaborative Innovation Center for Biomedicine, Shanghai University of Medicine & Health Sciences, Shanghai, 201318, China
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Zheng ALT, Sabidi S, Ohno T, Maeda T, Andou Y. Cu 2O/TiO 2 decorated on cellulose nanofiber/reduced graphene hydrogel for enhanced photocatalytic activity and its antibacterial applications. CHEMOSPHERE 2022; 286:131731. [PMID: 34388866 DOI: 10.1016/j.chemosphere.2021.131731] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/14/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Photocatalysis has gained attention as a viable wastewater remediation technique. However, the difficulty of recovering powder-based photocatalyst has often become a major limitation for their on-site practical application. Herein, we report on the successful in-situ preparation of a novel three-dimensional (3D) photocatalyst consisting of Cu2O/TiO2 loaded on a cellulose nanofiber (CNF)/reduced graphene hydrogel (rGH) via facile hydrothermal treatment and freeze-drying. The 3D macrostructure not only provides a template for the anchoring of Cu2O and TiO2 but also provides an efficient electron transport pathway for enhanced photocatalytic activity. The results showed that the Cu2O and TiO2 were uniformly loaded onto the aerogel framework resulting in the composites with large surface area with exposed actives sites. As compared to bare rGH, CNF/rGH, Cu2O/CNF/rGH and TiO2/CNF/rGH, the Cu2O/TiO2/CNF/rGH showed improved photocatalytic activity for methyl orange (MO) degradation. MO degradation pathway is proposed based on GC-MS analysis. The enhanced photoactivity can be attributed to the charge transfer and electron-hole separation from the synergistic effect of Cu2O/TiO2 anchored on CNF/rGH. In terms of their anti-bacterial activity towards Staphylococcus aureus and Escherichia coli, the synergistic effect of the Cu2O/TiO2 anchored on the CNF/rGH framework showed excellent activity towards the bacteria.
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Affiliation(s)
- Alvin Lim Teik Zheng
- Department of Life Science and Systems Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan
| | - Sarah Sabidi
- Department of Life Science and Systems Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan
| | - Teruhisa Ohno
- Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Toshinari Maeda
- Department of Life Science and Systems Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan; Collaborative Research Centre for Green Materials on Environmental Technology, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan
| | - Yoshito Andou
- Department of Life Science and Systems Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan; Collaborative Research Centre for Green Materials on Environmental Technology, Kyushu Institute of Technology, Fukuoka, 808-0196, Japan.
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El-Maghrabi N, El-Borady OM, Hosny M, Fawzy M. Catalytic and Medical Potential of a Phyto-Functionalized Reduced Graphene Oxide-Gold Nanocomposite Using Willow-Leaved Knotgrass. ACS OMEGA 2021; 6:34954-34966. [PMID: 34963977 PMCID: PMC8697594 DOI: 10.1021/acsomega.1c05596] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/24/2021] [Indexed: 05/02/2023]
Abstract
In the current study, a simple, environmentally friendly, and cost-effective reduced graphene oxide-gold nanoparticle (rGO-AuNP) nanocomposite was successfully phytosynthesized using the aqueous leaf extract of a common weed found on the Nile banks, Persicaria salicifolia, for the first time. The phytosynthesis of rGO-AuNPs was first confirmed via the color transformation from brown to black as well as throughvarious techniques such as transmission electron microscopy (TEM) and Raman spectroscopy. Two UV-vis peaks at 275 and 530 nm were observed for the nanocomposite with a typical particle size of mostly spherical AuNPs of 15-20 nm. However, other shapes were occasionally detected including rods, triangles, and rhomboids. Existing phytoconstituents such as flavonoids and glycosides in the plant extract were suggested to be responsible for the phytosynthesis of rGO-AuNPs. The excellent catalytic efficacy of rGO-AuNPs against MB degradation was confirmed, and a high antibacterial efficiency against Escherichia coli and Klebsiella pneumonia was also confirmed. Promising antioxidant performance of rGO-AuNPs was also proved. Furthermore, it was concluded that rGO-AuNPs acquired higher efficiency than AuNPs synthesized from the same plant extract in all of the studied applications.
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Affiliation(s)
- Nourhan El-Maghrabi
- Green
Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, 21511 Alexandria, Egypt
| | - Ola M. El-Borady
- Institute
of Nanoscience and Nanotechnology, Kafrelsheikh
University, Kafrelsheikh 33516, Egypt
| | - Mohamed Hosny
- Green
Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, 21511 Alexandria, Egypt
- ,
| | - Manal Fawzy
- Green
Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, 21511 Alexandria, Egypt
- National
Egyptian Biotechnology Experts Network, National Egyptian Academy for Scientific Research and Technology, 101 Kasr Al Aini Street, Cairo 33516, Egypt
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Hu S, Shi J, Luo B, Ai C, Jing D. Significantly enhanced photothermal catalytic hydrogen evolution over Cu 2O-rGO/TiO 2 composite with full spectrum solar light. J Colloid Interface Sci 2021; 608:2058-2065. [PMID: 34749153 DOI: 10.1016/j.jcis.2021.10.136] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/19/2021] [Accepted: 10/24/2021] [Indexed: 01/08/2023]
Abstract
Reduced graphene oxide (rGO) has conspicuous photothermal characteristics in photothermal applications. Thus in our previous work, we used reduced graphene oxide (rGO) supported titanium dioxide (TiO2) nanocomposite (rGO/TiO2) to absorb the ultraviolet and infrared light in the photothermal hydrogen evolution process. In order to make use of the full spectrum solar energy into other clear energy, the visible light should be also considered in following research. Herein, we report a cuprous oxide (Cu2O) decorated reduced graphene oxide (rGO) supported titanium dioxide (TiO2) (Cu2O-rGO/TiO2) catalysts, which can absorb full spectrum solar light in an innovative way. The Cu2O-rGO/TiO2 catalyst is synthesized through a one-step hydrothermal method. The rates of hydrogen evolution are 17800 μmol·g-1h-1 under photothermal condition (90°C), 3800 μmol·g-1h-1 under photocatalysis condition only (25°C) and 0 μmol·g-1h-1 under thermal catalysis condition only. The result of photothermal catalytic hydrogen evolution rate is about 4.7 times that of the sum of the photocatalytic and thermal reactions. The photothermal synergetic effect promotes the photo-generated electron-holes separation through the rGO due to the temperature rising, and accelerates the reaction rates on the catalyst surface in hydrogen evolution process simultaneously. This work could provide us a new promising way for the conversion of full spectrum solar energy to hydrogen energy.
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Affiliation(s)
- Songwei Hu
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jinwen Shi
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Bing Luo
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chaoqian Ai
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dengwei Jing
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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Sivaselvam S, Selvakumar R, Viswanathan C, Ponpandian N. Rapid one-pot synthesis of PAM-GO-Ag nanocomposite hydrogel by gamma-ray irradiation for remediation of environment pollutants and pathogen inactivation. CHEMOSPHERE 2021; 275:130061. [PMID: 33677277 DOI: 10.1016/j.chemosphere.2021.130061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/11/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Designing a cost-effective, high potential and recyclable catalyst remains a challenge. In the present work, a monolithic PAM-GO-Ag hydrogel is prepared by a facile, eco-friendly method using gamma-ray irradiation. The formation of GO-Ag composite by gamma radiation is also investigated and it is authenticated by XRD, FTIR, Raman, XPS and TEM analysis. The PAM-GO-Ag hydrogel exhibits excellent catalytic activity to different catalysant like methylene blue, Rhodamine-B, and pharmaceutical compound ciprofloxacin. The high catalyst carrying capacity and rapid electron shuttling ability of GO plays a significant role in the high performance of PAM-GO-Ag hydrogel. The PAM-GO-Ag hydrogel also exhibits excellent antibacterial activity. The damaged cell membrane, protein leakage, and increased ROS level contribute to the antibacterial activity of PAM-GO-Ag. The monolithic structure of PAM-GO-Ag hydrogel makes it easy to handle, recover, and reuse for several runs without significant loss of catalytic and antibacterial activity. All these results showed the possible application of PAM-GO-Ag hydrogel as a promising catalyst for the reduction of different pollutants and antibacterial agents on a large scale with good reusability.
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Affiliation(s)
- S Sivaselvam
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641 046, India
| | - R Selvakumar
- Nanobiotechnology Laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, 641 004, India
| | - C Viswanathan
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641 046, India
| | - N Ponpandian
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641 046, India.
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