Biological evaluation of a novel in-situ polymerised polyaniline cerium vanadate nanocomposite and its application in environmental remediation

2020 ◽  
Author(s):  
P. Vinisha Valsaraj ◽  
Anet
Keyword(s):  
Environmental Remediation ◽  
Biological Evaluation ◽  
Cerium Vanadate

scholarly journals In situ sequentially generation of acid and ferrous ions for environmental remediation

2016 ◽  
Vol 302 ◽  
pp. 223-232 ◽  
Author(s):  
Lingya Ma ◽  
Suramya I. Rathnayake ◽  
Hongping He ◽  
Runliang Zhu ◽  
Jianxi Zhu ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Ferrous Ions

Synthesis of urchin-like rutile titania carbon nanocomposites by iron-facilitated phase transformation of MXene for environmental remediation

2016 ◽  
Vol 4 (2) ◽  
pp. 489-499 ◽  
Author(s):  
Guodong Zou ◽  
Jianxin Guo ◽  
Qiuming Peng ◽  
Aiguo Zhou ◽  
Qingrui Zhang ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Environmental Remediation ◽  
Adsorption Mechanism ◽  
Adsorption Ability ◽  
Carbon Nanocomposites ◽  
2D Material ◽  
Rutile Titania

A novel 2D material is prepared byin situphase transformation of layered MXene with the induction of Fe(iii) ion. The urchin-like rutile TiO2–C nanocomposite with a high amount of (110) facets exhibits a high Cr(vi) adsorption ability of ~225 mg g−1, which is the highest value based on a simple adsorption mechanism reported so far

scholarly journals Synthesis and Biological Evaluation of New (−)-Gossypol-Derived Schiff Bases and Hydrazones

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Vu Van Vu ◽  
Trinh Thi Nhung ◽  
Nguyen Thi Thanh ◽  
Luu Van Chinh ◽  
Vu Dinh Tien ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Schiff Bases ◽  
Cell Lines ◽  
Human Cancer ◽  
Structural Data ◽  
Biological Evaluation ◽  
Human Cancer Cell Lines ◽  
High Yields ◽  
Synthesis And Biological Evaluation

A series of 14 new (-)-gossypol Schiff bases and hydrazones have been synthesized via an in situ procedure in high yields. Structural data showed that all target compounds exist as the enamine tautomer. Bioassays showed that several compounds exhibited cytotoxic effects against three human cancer cell lines. Compound 8a showed the greatest cytotoxic effect against hepatocellular carcinoma (HepG2), lung carcinoma (LU-1), and breast cancer (MCF-7) cell lines with IC50 values of 20.93, 13.58, and 9.40 μM, respectively. However, in an antibacterial test, compounds 8a and 8b inhibited Staphylococcus aureus and Bacillus cereus and compound 8e inhibited only Staphylococcus aureus at the same MIC values of 1024 μg/ml.

Synthesis and biological evaluation of (acyl)hydrazones and thiosemicarbazones obtained via in situ condensation of iminium salts with nitrogen-containing nucleophiles

2015 ◽  
Vol 19 (4) ◽  
pp. 669-684 ◽  
Author(s):  
Chiara Caneva ◽  
Silvana Alfei ◽  
Monica De Maria ◽  
Cristina Ibba ◽  
Ilenia Delogu ◽  
...  
Keyword(s):  
Biological Evaluation ◽  
Iminium Salts ◽  
Synthesis And Biological Evaluation

scholarly journals Dual-defect-modified graphitic carbon nitride with boosted photocatalytic activity under visible light

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Hideyuki Katsumata ◽  
Fumiya Higashi ◽  
Yuya Kobayashi ◽  
Ikki Tateishi ◽  
Mai Furukawa ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Environmental Remediation ◽  
Carbon Nitride ◽  
Order Rate Constant ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Strong Electron ◽  
Efficient Charge

Abstract The development of photocatalysts that efficiently degrade organic pollutants is an important environmental-remediation objective. To that end, we report a strategy for the ready fabrication of oxygen-doped graphitic carbon nitride (CN) with engendered nitrogen deficiencies. The addition of KOH and oxalic acid during the thermal condensation of urea led to a material that exhibits a significantly higher pseudo-first-order rate constant for the degradation of bisphenol A (BPA) (0.0225 min−1) compared to that of CN (0.00222 min−1). The enhanced photocatalytic activity for the degradation of BPA exhibited by the dual-defect-modified CN (Bt-OA-CN) is ascribable to a considerable red-shift in its light absorption compared to that of CN, as well as its modulated energy band structure and more-efficient charge separation. Furthermore, we confirmed that the in-situ-formed cyano groups in the Bt-OA-CN photocatalyst act as strong electron-withdrawing groups that efficiently separate and transfer photo-generated charge carriers to the surface of the photocatalyst. This study provides novel insight into the in-situ dual-defect strategy for g-C3N4, which is extendable to the modification of other photocatalysts; it also introduces Bt-OA-CN as a potential highly efficient visible-light-responsive photocatalyst for use in environmental-remediation applications.

scholarly journals One-Pot in Situ Hydrothermal Growth of BiVO4/Ag/rGO Hybrid Architectures for Solar Water Splitting and Environmental Remediation

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Santosh S. Patil ◽  
Mukund G. Mali ◽  
Mostafa Afifi Hassan ◽  
Deepak R. Patil ◽  
Sanjay S. Kolekar ◽  
...  
Keyword(s):  
Water Splitting ◽  
Environmental Remediation ◽  
Hydrothermal Growth ◽  
One Pot ◽  
Hybrid Architectures ◽  
Solar Water ◽  
Solar Water Splitting

scholarly journals A highly efficient and multifunctional biomass supporting Ag, Ni, and Cu nanoparticles through wetness impregnation for environmental remediation

2019 ◽  
Vol 8 (1) ◽  
pp. 309-319 ◽  
Author(s):  
Shahid Ali Khan ◽  
Muhammad Ismail ◽  
Yasir Anwar ◽  
Aliya Farooq ◽  
Bassam Oudh Al Johny ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Attenuated Total Reflectance ◽  
Gravimetric Analysis ◽  
Cu Nanoparticles ◽  
X Ray Diffraction ◽  
Total Reflectance ◽  
X Ray ◽  
Wide Range ◽  
Bactericidal Activities

Abstract Plant-based materials are reported to have a wide range of applications in the environmental and biomedical sectors. In this report, we present an economic and environmentally friendly supported turmeric powder (TP) biomass for the support of Ag, Ni and Cu nanoparticles (NPs) designated as Ag@TP, Ni@TP and Cu@TP. The in situ syntheses of the stated NPs were achieved in aqueous medium using NaBH4 as a reducing agent. The prepared NPs were applied for the degradation of o-nitrophenol (ONP), m-nitrophenol (MNP), p-nitrophenol (PNP), methyl orange (MO), Congo red (CR), rhodamine B (RB) and methylene blue (MB). Initially, Ag@TP, Ni@TP and Cu@TP were screened for the MO dye and antibacterial activity, where Ag@TP displayed the strongest catalytic activity for MO and bactericidal activities as compared to Ni@TP and Cu@TP. The quantity of metal ions adsorbed onto the TP was investigated by atomic absorption spectroscopy. The Ag@TP, Ni@TP and Cu@TP were characterized through X-ray diffraction (XRD), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDS) and field emission scanning electron microscope (FESEM) analysis.

scholarly journals Chromium(III) Removal from Wastewater by Chitosan Flakes

2020 ◽  
Vol 10 (6) ◽  
pp. 1925 ◽  
Author(s):  
Loris Pietrelli ◽  
Iolanda Francolini ◽  
Antonella Piozzi ◽  
Maria Sighicelli ◽  
Ilaria Silvestro ◽  
...  
Keyword(s):  
Metal Ions ◽  
Environmental Remediation ◽  
Ethylenediaminetetraacetic Acid ◽  
Low Cost ◽  
Preliminary Investigation ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Ion Competition ◽  
Batch Tests

Chitosan is very effective in removing metal ions through their adsorption. A preliminary investigation of the adsorption of chromium(III) by chitosan was carried out by means of batch tests as a function of contact time, pH, ion competition, and initial chromium(III) concentration. The rate of adsorption was rather rapid (t1/2 < 18 min) and influenced by the presence of other metal ions. The obtained data were tested using the Langmuir and Freundlich isotherm models and, based on R2 values, the former appeared better applicable than the latter. Chitosan was found to have an excellent loading capacity for chromium(III), namely 138.0 mg Cr per g of chitosan at pH = 3.8, but metal ions adsorption was strongly influenced by the pH. About 76% of the recovered chromium was then removed simply by washing the used chitosan with 0.1 M EDTA (Ethylenediaminetetraacetic acid) solution. This study demonstrates that chitosan has the potential to become an effective and low-cost agent for wastewater treatment (e.g., tannery waste) and in situ environmental remediation.

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