Facile synthesis of graphene oxide–silver nanocomposite for decontamination of water from multiple pollutants by adsorption, catalysis and antibacterial activity

Naeem, Hina; Ajmal, Muhammad; Qureshi, Raheela Beenish; Muntha, Sedra Tul; Ullah, Shafqat; Siddiq, Muhammad

doi:10.1016/j.jenvman.2018.09.061

Cited by 94 publications

(29 citation statements)

References 59 publications

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“…In the field of catalysis, titanium dioxide is the most widely studied and is most commonly used in combination with other metals because of its good dispersion and tolerance, high-multiplier performance, and cycle stability. Its other good properties include rapid charging performance and higher capacity, embedded lithium reversibility, and good application prospects in the field of lithium batteries [48]. In terms of light catalysis, the excitement of light sources has accelerated the generation of electron-empty pairs with oxidation and reduction capabilities [2,46].…”

Section: Nanometallic Oxides and Metal Sulfidesmentioning

confidence: 99%

“…Because every carbon atom in the graphite structure has an orbit that is completely reduced by the flat surface, it can form an π orbit with the adjacent carbon atom. Under such circumstances, the molecular orbit of graphite ole forms a continuous conjugate system, and the π electron can move freely on it, making graphite ole exhibit better conductivity than, e.g., conductive graphite [8,48].…”

Section: Nanocarbon Related Materials (Carbon Nanotubes Carbon Nano mentioning

confidence: 99%

“…The above nanomaterials are designed according to the specific characteristics of contaminated water bodies in Table 4. CuO-ZnO Adsorption and catalytic reduction of 4-nitrophenol (4-NP) and strong antibacterial activity (UV)λ = 498 nm [69] GO Adsorption of Pb 2+ , Cr 2+ , Cd 2+ in water pH = 5-6 [68] MOFs@GO (2:1) Adsorption of methylene blue (MB) and uranium (U) With the increase of temperature, the adsorption performance is enhanced [56] Co 3 O 4 @rGO Adsorption of Sb(III) and Sb(V) pH = 9 [87] GO-Ag Adsorption and removal of 2-nitroaniline (2-NA) and vat dyes (MG, MO, and EV) pH = 9 [48] PVA/GO-SA Adsorption of Pb 2+ in water When the GO content is 5 wt% [17] PAL/PANI/AgNPs Adsorption and catalytic reduction of Congo Red (CR), Adsorption of H 2 PO 4 pH = 7.4 [83]…”

Section: Existing Research Problems and Future Research Directionsmentioning

confidence: 99%

See 2 more Smart Citations

Oxygen Reduction Reaction in the Field of Water Environment for Application of Nanomaterials

Xie

Alhassan

et al. 2020

Nanomaterials

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Water pollution has caused the ecosystem to be in a state of imbalance for a long time. It has become a major global ecological and environmental problem today. Solving the potential hidden dangers of pollutants and avoiding unauthorized access to resources has become the necessary condition and important task to ensure the sustainable development of human society. To solve such problems, this review summarizes the research progress of nanomaterials in the field of water aimed at the treatment of water pollution and the development and utilization of new energy. The paper also tries to seek scientific solutions to environmental degradation and to create better living environmental conditions from previously published cutting edge research. The main content in this review article includes four parts: advanced oxidation, catalytic adsorption, hydrogen, and oxygen production. Among a host of other things, this paper also summarizes the various ways by which composite nanomaterials have been combined for enhancing catalytic efficiency, reducing energy consumption, recycling, and ability to expand their scope of application. Hence, this paper provides a clear roadmap on the status, success, problems, and the way forward for future studies.

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Section: Nanometallic Oxides and Metal Sulfidesmentioning

confidence: 99%

Section: Nanocarbon Related Materials (Carbon Nanotubes Carbon Nano mentioning

confidence: 99%

Section: Existing Research Problems and Future Research Directionsmentioning

confidence: 99%

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Oxygen Reduction Reaction in the Field of Water Environment for Application of Nanomaterials

Xie

Alhassan

et al. 2020

Nanomaterials

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“…The formation of Ag NPs on a GO sheet not only prevents the agglomeration of Ag NPs, but also enhances their material properties, such as their antibacterial activity and electronic and magnetic properties (Xu et al, 2011;Li et al, 2013). Due to its excellent properties, silver-graphene oxide (Ag-GO) is increasingly being studied for many applications, for example, as an antibacterial agent for water disinfection, application on membranes for antifouling, catalysts, and electrochemical biosensors (Bao, Zhang & Qi, 2011;Ko et al, 2018;Naeem et al, 2019;Zhao et al, 2019). Thus, the potential of Ag-GO for applications in diverse fields warrants investigation into its environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

Effects of silver-graphene oxide on seed germination and early growth of crop species

Kim

Chung

2020

PeerJ

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Due to its excellent material properties, silver-graphene oxide (Ag-GO) is being studied for diverse applications, such as antimicrobial agents, catalysts and absorbents. Such use of Ag-GO may lead to its release into terrestrial ecosystems, but little is known about the impact of Ag-GO on plants. In the present study, we determined the effects of Ag-GO on seed germination and early growth of crop species by analyzing the germination rate, growth of roots and shoots, hydrogen peroxide (H2O2) accumulation, and the uptake of Ag in alfalfa, radish and cucumber treated with 0.2–1.6 mg mL−1 of Ag-GO. Ag-GO treatment increased the shoot growth of radish at 0.2–1.6 mg mL−1 but decreased that of cucumber at 0.8 mg mL−1. In addition, Ag-GO enhanced the root elongation of radish at 0.2 mg mL−1 but inhibited that of alfalfa at 0.2, 0.8 and 1.6 mg mL−1. Ag-GO treatment induced H2O2 production in alfalfa, radish and cucumber in a concentration-dependent manner. Larger amounts of Ag accumulated in the seedlings as the concentration of Ag-GO increased, and such accumulation suggests that Ag may be transferred to higher trophic levels when plants are exposed to Ag-GO in ecosystems. Our study can, thus, serve as an important basis for setting guidelines for the release of nanomaterials into the environment.

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“…The formation of Ag NPs on a GO sheet not only prevents the agglomeration of Ag NPs, but also enhances their material properties, such as their antibacterial activity and electronic and magnetic properties (Xu et al, 2011;Li et al, 2013). Due to its excellent properties, Ag-GO is increasingly being studied for many applications, e.g., as an antibacterial agent for water disinfection, application on membranes for antifouling, catalysts, and electrochemical biosensors (Bao, Zhang & Qi, 2011;Ko et al, 2018;Naeem et al, 2019;Zhao et al, 2019). Thus, the potential of Ag-GO for application in diverse fields warrants investigation into its environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

Peer Review #1 of "Effects of silver-graphene oxide on seed germination and early growth of crop species (v0.2)"

2020

View full text Add to dashboard Cite

Due to its excellent material properties, silver-graphene oxide (Ag-GO) is being studied for diverse applications, such as antimicrobial agents, catalysts, and absorbents. Such use of Ag-GO may lead to its release into terrestrial ecosystems, but little is known about the impact of Ag-GO on plants. In the present study, we determined the effects of Ag-GO on seed germination and early growth of crop species by analyzing the germination rate, growth of roots and shoots, hydrogen peroxide (H 2 O 2) accumulation, and the uptake of Ag in alfalfa, radish, and cucumber treated with 0.2 to 1.6 mg mL-1 of Ag-GO. Ag-GO treatment increased the shoot growth of radish at 0.2 to 1.6 mg mL-1 but decreased that of cucumber at 0.8 mg mL-1. In addition, Ag-GO enhanced the root elongation of radish at 0.2 mg mL-1 but inhibited that of alfalfa at 0.2, 0.8, and 1.6 mg mL-1. Ag-GO treatment induced H 2 O 2 production in alfalfa, radish, and cucumber in a concentration-dependent manner. Larger amounts of Ag accumulated in the seedlings as the concentration of Ag-GO increased, and such accumulation suggests that Ag may be transferred to higher trophic levels when plants are exposed to Ag-GO in ecosystems. Our study can, thus, serve as an important basis for setting guidelines for the release of nanomaterials into the environment.

show abstract

Facile synthesis of graphene oxide–silver nanocomposite for decontamination of water from multiple pollutants by adsorption, catalysis and antibacterial activity

Cited by 94 publications

References 59 publications

Oxygen Reduction Reaction in the Field of Water Environment for Application of Nanomaterials

Oxygen Reduction Reaction in the Field of Water Environment for Application of Nanomaterials

Effects of silver-graphene oxide on seed germination and early growth of crop species

Peer Review #1 of "Effects of silver-graphene oxide on seed germination and early growth of crop species (v0.2)"

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