Application of response surface methodology for optimization of cadmium adsorption from aqueous solutions by Fe3O4@SiO2@APTMS core–shell magnetic nanohybrid
“…As a result, for the other adsorption experiments, the optimal pH value (5.0) was chosen. This result is in agreement with previous studies [ 11 , 64 , 69 ]. Figure 7 Effect of pH on Cu(II) adsorption by the FSAB nanoparticle adsorbent.…”
Section: Resultssupporting
confidence: 94%
“…Until today, many methods such as adsorption, membrane filtration, ion exchange, chemical precipitation, and electrochemical treatment technologies have been used in this regard [ 10 , 11 , 12 ]. Adsorption is one of the most widely used and efficient techniques because of cheap processing costs, simplistic properties, and processes for removing lower heavy metal ion concentrations [ 13 , 14 , 15 ].…”
“…As a result, for the other adsorption experiments, the optimal pH value (5.0) was chosen. This result is in agreement with previous studies [ 11 , 64 , 69 ]. Figure 7 Effect of pH on Cu(II) adsorption by the FSAB nanoparticle adsorbent.…”
Section: Resultssupporting
confidence: 94%
“…Until today, many methods such as adsorption, membrane filtration, ion exchange, chemical precipitation, and electrochemical treatment technologies have been used in this regard [ 10 , 11 , 12 ]. Adsorption is one of the most widely used and efficient techniques because of cheap processing costs, simplistic properties, and processes for removing lower heavy metal ion concentrations [ 13 , 14 , 15 ].…”
“…The FT-IR spectra demonstrated the successful loading of drugs ( Figure 1E and Supplementary Figure S2). The characteristic peak at 590 cm −1 was attributed to Fe-O bond (Sanati et al, 2019). After ART loading, the spectrum of the MNP-ART exhibited new band in the 1740 cm −1 region, which belongs to C = O in δ-lactone of ART.…”
Section: Preparation and Characterization Of Drug-loaded Mnpmentioning
Recently, chemodynamic therapy (CDT) has represented a new approach for cancer treatment with low toxicity and side effects. Nonetheless, it has been a challenge to improve the therapeutic effect through increasing the amount of reactive oxygen species (ROS). Herein, we increased the amount of ROS agents in the Fenton-like reaction by loading dihydroartemisinin (DHA) which was an artemisinin (ART) derivative containing peroxide groups, into magnetic nanoparticles (MNP), thereby improving the therapeutic effect of CDT. Blank MNP were almost non-cytotoxic, whereas three MNP loading ART-based drugs, MNP-ART, MNP-DHA, and MNP-artesunate (MNP-AS), all showed significant killing effect on breast cancer cells (MCF-7 cells), in which MNP-DHA were the most potent. What's more, the MNP-DHA showed high toxicity to drug-resistant breast cancer cells (MCF-7/ADR cells), demonstrating its ability to overcome multidrug resistance (MDR). The study revealed that MNP could produce ferrous ions under the acidic condition of tumor microenvironment, which catalyzed DHA to produce large amounts of ROS, leading to cell death. Further experiments also showed that the MNP-DHA had significant inhibitory effect on another two aggressive breast cancer cell lines (MDA-MB-231 and MDA-MB-453 cells), which indicated that the great potential of MNP-DHA for the treatment of intractable breast cancers.
“…In the first adsorption cycle, the adsorption capacity is 160 mg/g, whereas it decreases to 149 mg/g after six cycles. The related data are displayed in Figure 12 [84].…”
Section: Regeneration Of the Used Adsorbentmentioning
A comprehensive study on removal of cadmium from aqueous solution by using mesoporous SBA-15 functionalized by 1,5-diphenyl carbazide: experimental design, kinetic, thermodynamic, and isotherm aspects
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