Abstract
Investigate the use of visible light to improve photocatalytic degradation of organic pollutants in wastewater. Nitrogen-doped titania and molybdenum sulfide nanocomposites (NTM NCs) with ...different weight ratios of MoS
2
(1, 2, and 3 wt.%) synthesized by a solid state method applied to the photodegradation of methylene blue(MB) under visible light irradiation. The synthesized NTM composites were characterized by SEM, TEM, XRD, FT-IR, UV–Vis, DRS and PL spectroscopy. The results showed enhanced activity of NTM hybrid nanocrystals in oxidizing MB in water under visible light irradiation compared to pure TiO
2
. The photocatalytic performance of NTM samples increased with MoS
2
content. The results show that the photodegradation efficiency of the TiO
2
compound improved from 13 to 82% in the presence of N-TiO
2
and to 99% in the presence of MoS
2
containing N-TiO
2
, which is 7.61 times higher than that of TiO
2
. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal N-TiO
2
/MoS
2
(NTM
2
) ratio. Reusable experiments indicated that the prepared NTM NCs photocatalysts were stable during MB photodegradation and had practical applications for environmental remediation.
The goal of the ongoing study is to determine how orange peel extract (OPE), an environmentally benign additive, affects the corrosion resistance of carbon steel in formation water (FW). The study ...utilized diverse techniques to investigate the effects of different peel extract concentrations, ranging from 0.5 to 2.5 percent (v/v), and concentrations of 100 to 500 ppm at room temperature (25 °C). Subsequently, the optimal concentration of 2.5 percent (v/v) was identified, and the temperature range was expanded to 25-55 °C for further examination. These techniques include dielectric spectroscopy (EIS), potentiodynamic polarisation, open circuit potential, and weight loss quantification. The inhibitory efficiency was assessed using the aforementioned techniques, and the results were further verified through the utilization of energy-dispersive radiation (EDS) and FTIR analyses. The outcomes of electrochemical testing demonstrated that orange peel extract (OPE) displayed significant effectiveness in preventing corrosion, with an inhibition rate of 90.13% when used at a concentration of 2.5% and a temperature of 25 °C. The findings suggested that orange peel extract (OPE) acts as a corrosion inhibitor with both inhibitory mechanisms. Its performance improves as the concentration of the inhibitor increases, conforming to the Langmuir adsorption isotherm model, and it adsorbed to the steel surface through physical adsorption. The findings revealed that orange peel extract (OPE) effectively served as a corrosion inhibitor for carbon steel by adsorbing its active components onto the surface of the steel. This adsorption process was primarily physical and followed the Langmuir isotherm.
This study was conducted to investigate the removal efficiency of heptachlor from aqueous solutions using bimetallic iron/copper (Fe/Cu) nanoparticles. The highest removal efficiency of 99.3% for ...heptachlor compounds was achieved at pH 7.0, bimetallic Fe/Cu dosage 0.33 g/L, initial heptachlor concentration 2 µg/L, contact time 30 min, and stirring rate 250 rpm. The adsorption data of heptachlor fitted well to Koble-Corrigan isotherm and Avrami kinetic model. Artificial neural network r
2
: 0.9567) was more precise than the response surface methodology (r
2
: 0.774) in simulating the adsorption of heptachlor onto the bimetallic Fe/Cu nanoparticles. This study indicated that bimetallic Fe/Cu could be employed as an efficient adsorbent for the removal of heptachlor compound.
Abstract
The tertiary composite of TiO
2
/CuO @ Ag (TCA) were synthesized by the solid state method using different ratios of TiO
2
/CuO NCs and Ag NPs. The structural, morphological, and optical ...properties of nanocomposites were analyzed by scanning electron microscope, Transmission electron microscope, X-ray diffraction, Fourier transform infrared spectra, UV–Vis diffuse reflectance spectra (UV–Vis/DRS) and photoluminescence spectrophotometry. The results showed enhanced activity of TCA hybrid nano crystals in oxidizing MB in water under visible light irradiation compared to pure TiO
2
. The photocatalytic performance TCA samples increased with suitable Ag content. The results show that the photo degradation efficiency of the TiO
2
compound improved from 13 to 85% in the presence of TiO
2
–CuO and to 98.87% in the presence of Ag containing TiO
2
–CuO, which is 7.6 times higher than that of TiO
2
. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal TiO
2
–CuO/Ag (TCA
2
) ratio. Reusable experiments indicated that the prepared TCA NC photo catalysts were stable during MB photo degradation and had practical applications for environmental remediation.
Thin-film nanocomposite (TFN) forward osmosis (FO) membranes have attracted significant attention due to their potential for solving global water scarcity problems. In this study, we investigate the ...impact of titanium oxide (TiO
2
) and titanium oxide/reduced graphene (TiO
2
/rGO) additions on the performance of TFN-FO membranes, specifically focusing on water flux and reverse salt diffusion. Membranes with varying concentrations of TiO
2
and TiO
2
/rGO were fabricated as interfacial polymerizing M-phenylenediamine (MPD) and benzenetricarbonyl tricholoride (TMC) monomers with TiO
2
and its reduced graphene composites (TiO
2
/rGO). The TMC solution was supplemented with TiO
2
and its reduced graphene composites (TiO
2
/rGO) to enhance FO performance and reverse solute flux. All MPD/TMC polyamide membranes are characterized using various techniques such as scanning electron microscopy (SEM), atomic force microscopy (AFM), and contact angle measurements. The results demonstrate that incorporating TiO
2
/rGO into the membrane thin layer improves water flux and reduces reverse salt diffusion. In contrast to the TFC membrane (10.24 L m
−2
h
−1
and 6.53 g/m
2
h), higher water flux and higher reverse solute flux were detected in the case of TiO
2
and TiO
2
/rGO-merged TFC skin membranes (18.81 and 24.52 L m
−2
h
−1
and 2.74 and 2.15 g/m
2
h, respectively). The effects of TiO
2
and TiO
2
/rGO stacking on the skin membrane and the performance of TiO
2
and TiO
2
/rGO skin membranes have been thoroughly studied. Additionally, being investigated is the impact of draw solution concentration.
Graphical Abstract
Efficacy directed-fingerprint analysis of high-performance thin layer chromatography is proposed to set up fingerprint activity relationship modeling for precise discrimination of chemical and ...effective consistency of Nigella sativa oils from different geographical origins. A whole of 27 samples of N. sativa oils from three geographical area (Egypt, Ethiopia and Syria) were collected and their antimicrobial, cytotoxic, anti-inflammatory and analgesic activities were measured. The results revealed that there was significant difference in the biological activities of the oils collected. The fingerprints of the samples had been established by high performance thin layer chromatography, subsequently the data had been utilized for the discrimination of the samples geographical origin. The loading plots of HPTLC-Principal Component Analysis (PCA) had been used to discover the crucial marker ingredients for classification. Furthermore, targeted chemical fingerprints had been established by HPTLC, and discriminant analyses were calculated depending on five common characteristic peaks. The chosen markers were quantified by validated HPTLC methods, and then the quantitative data as well as the oils bioactive properties were subjected to partial least squares regression (PLSR) analyses. Thymoquinone and free fatty acids (FFA) were revealed as potential markers to distinguish the chemical consistency and efficacy of the oils from the three different geographical origins. The suggested technique provides an applicable integrated strategy to screen for efficacy-associated markers for discrimination of N. sativa oils from distinctive geographical origins exploiting HPTLC fingerprint activity relationship modeling.
•Efficacy directed fingerprint analysis of N. sativa oils using HPTLC is proposed.•Antimicrobial, cytotoxic, anti-inflammatory and analgesic activities were measured.•Untargeted HPTLC PCA model used for discrimination of N. sativa oil samples•Targeted chemical fingerprints for five markers established by validated HPTLC method•Thymoquinone and FFA were revealed as potential biomarkers.
The tertiary composite of TiO
/CuO @ Ag (TCA) were synthesized by the solid state method using different ratios of TiO
/CuO NCs and Ag NPs. The structural, morphological, and optical properties of ...nanocomposites were analyzed by scanning electron microscope, Transmission electron microscope, X-ray diffraction, Fourier transform infrared spectra, UV-Vis diffuse reflectance spectra (UV-Vis/DRS) and photoluminescence spectrophotometry. The results showed enhanced activity of TCA hybrid nano crystals in oxidizing MB in water under visible light irradiation compared to pure TiO
. The photocatalytic performance TCA samples increased with suitable Ag content. The results show that the photo degradation efficiency of the TiO
compound improved from 13 to 85% in the presence of TiO
-CuO and to 98.87% in the presence of Ag containing TiO
-CuO, which is 7.6 times higher than that of TiO
. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal TiO
-CuO/Ag (TCA
) ratio. Reusable experiments indicated that the prepared TCA NC photo catalysts were stable during MB photo degradation and had practical applications for environmental remediation.
Abstract The tertiary composite of TiO2/CuO @ Ag (TCA) were synthesized by the solid state method using different ratios of TiO2/CuO NCs and Ag NPs. The structural, morphological, and optical ...properties of nanocomposites were analyzed by scanning electron microscope, Transmission electron microscope, X-ray diffraction, Fourier transform infrared spectra, UV–Vis diffuse reflectance spectra (UV–Vis/DRS) and photoluminescence spectrophotometry. The results showed enhanced activity of TCA hybrid nano crystals in oxidizing MB in water under visible light irradiation compared to pure TiO2. The photocatalytic performance TCA samples increased with suitable Ag content. The results show that the photo degradation efficiency of the TiO2 compound improved from 13 to 85% in the presence of TiO2–CuO and to 98.87% in the presence of Ag containing TiO2–CuO, which is 7.6 times higher than that of TiO2. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal TiO2–CuO/Ag (TCA2) ratio. Reusable experiments indicated that the prepared TCA NC photo catalysts were stable during MB photo degradation and had practical applications for environmental remediation.
Investigate the use of visible light to improve photocatalytic degradation of organic pollutants in wastewater. Nitrogen-doped titania and molybdenum sulfide nanocomposites (NTM NCs) with different ...weight ratios of MoS
(1, 2, and 3 wt.%) synthesized by a solid state method applied to the photodegradation of methylene blue(MB) under visible light irradiation. The synthesized NTM composites were characterized by SEM, TEM, XRD, FT-IR, UV-Vis, DRS and PL spectroscopy. The results showed enhanced activity of NTM hybrid nanocrystals in oxidizing MB in water under visible light irradiation compared to pure TiO
. The photocatalytic performance of NTM samples increased with MoS
content. The results show that the photodegradation efficiency of the TiO
compound improved from 13 to 82% in the presence of N-TiO
and to 99% in the presence of MoS
containing N-TiO
, which is 7.61 times higher than that of TiO
. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal N-TiO
/MoS
(NTM
) ratio. Reusable experiments indicated that the prepared NTM NCs photocatalysts were stable during MB photodegradation and had practical applications for environmental remediation.
