Toxicological effects of TiO2 nanoparticles on plant growth promoting soil bacteria

Chavan, Sangeeta; Sarangdhar, Vishwas; Vigneshwaran, N.

doi:10.1016/j.emcon.2020.01.003

Cited by 64 publications

(18 citation statements)

References 31 publications

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“…We used urea in preparation of TiO 2 NPs because addition of urea as the nitrogen source can positively affect surface area and activity of the produced nanoparticles as suggested in the literature ( Marques et al., 2019 ; Cheng et al., 2008 ). The obtained solution was then allowed to settle overnight and the precipitate was washed with DW for 5 times ( Chavan et al., 2020 ). When TiCl 4 hydrolyses, TiO 2 particles in accompany with H + and Cl − ions were generated, which can be described by the following reaction:

…”

Section: Methodsmentioning

confidence: 99%

Co-application of biochar and titanium dioxide nanoparticles to promote remediation of antimony from soil by Sorghum bicolor: metal uptake and plant response

Zand

Tabrizi

Heir

2020

Heliyon

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Association of titanium dioxide nanoparticles (TiO 2 NPs) and biochar (BC) to assist phytoremediation of Sb contaminated soil was investigated in this study. Seedlings of Sorghum bicolor were exposed to different regimes of TiO 2 NPs (0, 100, 250 and 500 mg kg −1 ) and BC (0, 2.5% and 5%), separately and in combination, to investigate the effects on plant growth, Sb absorption and accumulation and physiological response of the plant in Sb contaminated soil. Co-application of TiO 2 NPs and BC had positive effects on plant establishment and growth in contaminated soil. Greater accumulation of Sb in the shoots compared to the roots of S. bicolor was observed in all treatments. Application of BC increased immobilization of Sb in the soil. Using TiO 2 NPs significantly increased accumulation capacity of S. bicolor for Sb with the greatest accumulation capacity of 1624.1 μg per pot achieved in “250 mg kg −1 TiO 2 NPs+2.5% BC” treatment (P < 0.05). Association of TiO 2 NPs and BC significantly increased chlorophyll a (Chl a ) and chlorophyll b (Chl b ) contents of S. bicolor compared to the TiO 2 NPs-amended treatments. Results of this study presented a promising novel technique by combined application of TiO 2 NPs and BC in phytoremediation of Sb contaminated soils. Co-application of TiO 2 NPs and BC could reduce the required amounts of TiO 2 NPs for successful phytoremediation of heavy metal polluted soils. Intelligent uses of plants in accompany with biochar and nanomaterials have great application prospects in dealing with soil remediation.

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…”

Section: Methodsmentioning

confidence: 99%

Co-application of biochar and titanium dioxide nanoparticles to promote remediation of antimony from soil by Sorghum bicolor: metal uptake and plant response

Zand

Tabrizi

Heir

2020

Heliyon

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“…Some investigations reported negative effects caused by TiO 2 NPs on plant growth, whereas it was concluded that TiO 2 NPs may cause some sensitive plant growth-promoting bacteria to disappear from soil. Accordingly, such impairment of the soil bacterial community composition may further affect ecosystem functioning [ 123 , 124 ].…”

Section: Tio 2 Nps In the Environment (Ecotoxicity)mentioning

confidence: 99%

Influence of Titanium Dioxide Nanoparticles on Human Health and the Environment

2021

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Nanotechnology has enabled tremendous breakthroughs in the development of materials and, nowadays, is well established in various economic fields. Among the various nanomaterials, TiO2 nanoparticles (NPs) occupy a special position, as they are distinguished by their high availability, high photocatalytic activity, and favorable price, which make them useful in the production of paints, plastics, paper, cosmetics, food, furniture, etc. In textiles, TiO2 NPs are widely used in chemical finishing processes to impart various protective functional properties to the fibers for the production of high-tech textile products with high added value. Such applications contribute to the overall consumption of TiO2 NPs, which gives rise to reasonable considerations about the impact of TiO2 NPs on human health and the environment, and debates regarding whether the extent of the benefits gained from the use of TiO2 NPs justifies the potential risks. In this study, different TiO2 NP exposure modes are discussed, and their toxicity mechanisms—evaluated in various in vitro and in vivo studies—are briefly described, considering the molecular interactions with human health and the environment. In addition, in the conclusion of this study, the toxicity and biocompatibility of TiO2 NPs are discussed, along with relevant risk management strategies.

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“…150 mL of urea solution (104 mg/mL) was added under constant stirring rate till the solution turned into a white colloid without any precipitation. The obtained solution was then allowed to settle overnight and the precipitate was washed with DW for 5 times [5] . When TiCl 4 hydrolyses, TiO 2 particles in accompany with H + and Cl − ions were produced, which can be described by the following reaction:

…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Phytoremediation: Data on effects of titanium dioxide nanoparticles on phytoremediation of antimony polluted soil

Zand

Heir

2020

Data in Brief

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This data article presents effects of titanium dioxide nanoparticles (TiO 2 NPs) on phytoremediation of antimony contaminated soil using S. Bicolor in detail. Seedlings of S. bicolor were exposed to different doses of TiO 2 NPs (0,50,100,250,500 and 1000 mg/kg) in plastic pots containing Sb-contaminated soil and cultivated over a 80-day period in a greenhouse. Harvested plants were dried in an oven at 70 °C for 48 h to obtain dry weight of the biomass. The concentrations of metal(loid)s in soil as well as in plant organs were determined by inductively coupled plasma optical emission spectrometry (ICP-OES). Chlorophyll contents of fresh leaves materials were measured by UV spectrophotometry at 645 nm and 663 nm. Data on distribution of Sb and Ti in roots and shoots of S. bicolor contaminated soil treated with different levels of TiO 2 NPs are indicated in tables. Figures presented the data on plant growth behavior, Sb and Ti accumulation capacities, and physiological response of S. Bicolor in various treatments. The presented data are beneficial to gain insight into phytoremediation potential of S. bicolor in Sb-contaminated soil as well as plant behavior under the stress of both Sb and TiO 2 NPs in soil. These data are useful for environmental researchers, soil and plant scientists, nanotechnology experts, stakeholders and decision-makers involved in soil decontamination challenges.

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Toxicological effects of TiO2 nanoparticles on plant growth promoting soil bacteria

Cited by 64 publications

References 31 publications

Co-application of biochar and titanium dioxide nanoparticles to promote remediation of antimony from soil by Sorghum bicolor: metal uptake and plant response

Co-application of biochar and titanium dioxide nanoparticles to promote remediation of antimony from soil by Sorghum bicolor: metal uptake and plant response

Influence of Titanium Dioxide Nanoparticles on Human Health and the Environment

Phytoremediation: Data on effects of titanium dioxide nanoparticles on phytoremediation of antimony polluted soil

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