Metal Oxide Nanoparticles for Environmental Remediation

Venkateshaiah, Abhilash; Černík, Miroslav

doi:10.1002/9783527834143.ch11

Cited by 16 publications

(3 citation statements)

References 130 publications

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“…Semiconductors such as zinc oxide (ZnO), copper oxide (CuO), tin oxide (SnO 2 ), aluminum oxide (Al 2 O 3 ), titanium dioxide (TiO 2 ), etc., have attracted broad attention for photocatalytic processes. [7][8][9] Among them, TiO 2 is usually utilized in the generation of hydrogen, degradation of organic dyes, and other environmental applications due to its low toxicity, outstanding photocatalytic efficiency, and long-term thermodynamic stability compared to others. Nonetheless, TiO 2 possesses a substantial bandgap energy (3.2 eV) only serves to highlight its effective photocatalytic activities when exposed to Ultra visible (UV) radiation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Xuan Trinh,

Mong Thy,

That Buu

et al. 2023

ChemistrySelect

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In this study, silver-titanium dioxide/graphene aerogel (AgÀ TiO 2 /GAÀ ATG) was synthesized via chemical reduction using ethylene diamine (EDA). The effects of reductant doses on the formation of the three-dimensional structure and the photocatalytic degradation efficiency of ATG were evaluated with five different volumes (20, 30, 40, 50, and 60 μL), corresponding to the ATG1, ATG2, ATG3, and ATG4, respectively. The results showed that 40 μL of EDA was the suitable condition for the formation of ATG three-dimensional structure. Characterizations revealed that ATG3 was successfully synthesized with distinctive peaks of Ag and TiO 2 in the X-ray diffraction patterns whilst scanning electron microscope and high resolution transmission electron microscope images showed a porous structure, silver nanoparticles and TiO 2 with an average size of 10-25 nm were uniformly distributed on the graphene surface. Furthermore, ATG3 possessed the highest photocatalytic capability to deteriorate methyl orange with an efficiency of up to 99.53 % with a catalyst dose of 0.3 mg/mL, superior compared to those of TiO 2 and TiO 2 /GA. The radicals scavenging experiments elucidated * O 2 to majorly contribute to the photodegradation process. Moreover, ATG3 showed high recyclability, which retains 80 % of yield even after 10 cycles. Those findings proved that ATG has high potential in the environmental remediation field.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Xuan Trinh,

Mong Thy,

That Buu

et al. 2023

ChemistrySelect

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“…In contrast to the partially efficacious conventional techniques and approaches, nanotechnology presents novel prospects in this domain [ 152 , 153 ]. The utilization of nanoremediation techniques presents a promising avenue for the detection and treatment of contaminants in various environmental matrices such as water, soil, sediment, and air [ 154 , 155 ]. The fundamental process of nanoremediation primarily involves the interaction between the contaminant and nanoparticles, wherein the contaminant is first detoxified and subsequently immobilized [ 155 ].…”

Section: Nanoparticle Utilization In the Oil And Gas Industrymentioning

confidence: 99%

Unveiling the revolutionary role of nanoparticles in the oil and gas field: Unleashing new avenues for enhanced efficiency and productivity

Emmanuel

2024

Heliyon

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“…Due to their environmental friendliness, several metal oxide nanoparticles (MONPs), including titanium dioxide (TiO 2 ) [ 17 ], iron oxide (Fe 3 O 4 ) [ 18 ], and zinc oxide (ZnO) [ 19 ], have attracted significant attention in recent years. Metal oxide NPs have been effectively used in agriculture due to their unique physicochemical properties [ 20 ] and the ability to improve growth and development of plants under different growth conditions [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Recently, MONPs were found to improve tolerance of Triticum aestivum [ 28 , 29 ], Lallemantia iberica [ 30 ], and Moringa peregrina [ 31 ] to drought stress by activation of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX).…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Iron Oxide (Hematite) Nanoparticles and Their Influence on Sorghum bicolor Growth under Drought Stress

Ndou

Rakgotho

Nkuna

et al. 2023

Plants

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Drought is a major abiotic stress that confronts plant growth and productivity, thus compromising food security. Plants use physiological and biochemical mechanisms to cope with drought stress, but at the expense of growth. Green-synthesized nanoparticles (NPs) have gained great attention in agriculture due to their environmental friendliness and affordability while serving as potential biofertilizers. This study investigates the role of hematite (αFe2O3) NPs, synthesized from Aspalathus linearis (rooibos), to improve Sorghum bicolor growth under drought stress. About 18 nm, spherical, and highly agglomerated hematite (αFe2O3) NPs were obtained. Sorghum seeds were primed with 5, 10, and 15 mg/L αFe2O3 NPs, and, after seven days of germination, the seedlings were transferred into potting soil, cultivated for fourteen days, and were subsequently water deprived (WD) for a further seven days. A reduction in plant height (78%), fresh (FW; 35%) and dry (DW; 36%) weights, and chlorophyll (chl) content ((total chl (81%), chla (135%), and chlb (1827%)) was observed in WD plants, and this correlated with low nutrients (Mg, Si, P, and K) and alteration in the anatomic structure (epidermis and vascular bundle tissues). Oxidative damage was observed as deep blue (O2●−) and brown (H2O2) spots on the leaves of WD plants, in addition to a 25% and 40% increase in oxidative stress markers (H2O2 and MDA) and osmolytes (proline and total soluble sugars), respectively. Seed priming with 10 mg/L αFe2O3 NPs improved plant height (70%), FW (56%), DW (34%), total Chl (104%), chla (160%) and chlb (1936%), anatomic structure, and nutrient distribution. Priming with 10 mg/L αFe2O3 NPs also protected sorghum plants from drought-induced oxidative damage by reducing ROS formation and osmolytes accumulation and prevented biomolecule degradation. The study concludes that green synthesized hematite NPs positively influenced sorghum growth and prevented oxidative damage of biomolecules by improving nutrient uptake and osmoregulation under drought stress.

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Metal Oxide Nanoparticles for Environmental Remediation

Cited by 16 publications

References 130 publications

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Synthesis of Ag−/Graphene Aerogel Composite for Removal of Methyl Orange

Unveiling the revolutionary role of nanoparticles in the oil and gas field: Unleashing new avenues for enhanced efficiency and productivity

Green Synthesis of Iron Oxide (Hematite) Nanoparticles and Their Influence on Sorghum bicolor Growth under Drought Stress

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