Experimental and theoretical studies of sodium acetyldithiocarbamate for the removal of Cu2+ and Ni2+ from aqueous solution

Ding, Xupeng; Li, Meng; Yang, Wenzhong; Zhang, Kegui; Zuo, Zhaoshun; Chen, Yun; Yin, Xingtian; Liu, Ying

doi:10.1016/j.jcis.2020.06.074

Cited by 14 publications

(4 citation statements)

References 38 publications

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“…It was speculated that the alkaline environment had a great influence on the protonation of CD surface functional groups. The FL intensity of Cu,N-CNS/RhB was enhanced with the increase of pH, possibly because of the weakened chelating ability of N, O to Cu(II) . ζ Potential results (Figure S5) also showed that with the increase of the pH value, the charge gradually increased, which indicated that (de)protonation occurred at the CD surface .…”

Section: Resultsmentioning

confidence: 94%

“…The FL intensity of Cu,N-CNS/RhB was enhanced with the increase of pH, possibly because of the weakened chelating ability of N, O to Cu(II). 51 ζ Potential results (Figure S5) also showed that with the increase of the pH value, the charge gradually increased, which indicated that (de)protonation occurred at the CD surface. 52 It was speculated that the alkaline environment had a great influence on the protonation of CD surface functional groups.…”

Section: Stability Of Cds and Cnsmentioning

confidence: 91%

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Ratiometric Fluorescent Detection of Ultrasound-Regulated ATP Release: An Ultrasound-Resistant Cu,N-Doped Carbon Nanosphere

Nan

Liu

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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Focused ultrasound, as a protocol of cancer therapy, might induce extracellular adenosine triphosphate (ATP) release, which could enhance cancer immunotherapy and be monitored as a therapeutic marker. To achieve an ATP-detecting probe resistant to ultrasound irradiation, we constructed a Cu/N-doped carbon nanosphere (CNS), which has two fluorescence (FL) emissions at 438 and 578 nm to detect ultrasound-regulated ATP release. The addition of ATP to Cu/N-doped CNS was conducted to recover the FL intensity at 438 nm, where ATP enhanced the FL intensity probably via intramolecular charge transfer (ICT) primarily and hydrogen-bond-induced emission (HBIE) secondarily. The ratiometric probe was sensitive to detect micro ATP (0.2–0.6 μM) with the limit of detection (LOD) of 0.068 μM. The detection of ultrasound-regulated ATP release by Cu,N-CNS/RhB showed that ATP release was enhanced by the long-pulsed ultrasound irradiation at 1.1 MHz (+37%, p < 0.01) and reduced by the short-pulsed ultrasound irradiation at 5 MHz (−78%, p < 0.001). Moreover, no significant difference in ATP release was detected between the control group and the dual-frequency ultrasound irradiation group (+4%). It is consistent with the results of ATP detection by the ATP-kit. Besides, all-ATP detection was developed to prove that the CNS had ultrasound-resistant properties, which means it could bear the irradiation of focused ultrasound in different patterns and detect all-ATP in real time. In the study, the ultrasound-resistant probe has the advantages of simple preparation, high specificity, low limit of detection, good biocompatibility, and cell imaging ability. It has great potential to act as a multifunctional ultrasound theranostic agent for simultaneous ultrasound therapy, ATP detection, and monitoring.

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Section: Resultsmentioning

confidence: 94%

Section: Stability Of Cds and Cnsmentioning

confidence: 91%

Ratiometric Fluorescent Detection of Ultrasound-Regulated ATP Release: An Ultrasound-Resistant Cu,N-Doped Carbon Nanosphere

Nan

Liu

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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“…It has been reported that some chelating agents could interact with metal ions to form a multinuclear chelate; namely, the d-orbital of the metal can obtain electrons from the ligand to achieve the optimal state. 62,63 Inspired by this, we further explored relevant adsorption mechanisms for the case of the Zn−chelate by DFT theory. As mentioned in Section 3.3, the unique function of IRI analysis can exhibit all kinds of interactions in a complex To further provide deep insight on the chelation mechanism, charge decomposition analysis was applied to study how charges are transferred between the fragment orbital (FO) in a complex.…”

Section: Resultsmentioning

confidence: 99%

In-Depth Study of Heavy Metal Removal by an Etidronic Acid-Functionalized Layered Double Hydroxide

Chen

Khan

et al. 2022

ACS Appl. Mater. Interfaces

115

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Sorption methodologies play a pivotal role in heavy metal removal to meet the global requirements for uninterrupted access to drinkable water. Standard sorption technologies lack efficiency due to weak adsorbent–metal interaction. To this end, a layered cationic framework material loaded with phosphonate was first fabricated by a facile intercalation method to capture hazardous metals from an aqueous solution. To inquire the removal mechanisms, batch experiments, detection technologies, and simulation calculations were employed to study the interactions at the interface of clay/water. Specifically, the functionalized layered double hydroxide possessed excellent chelation adsorption properties with Zn2+ (281.36 mg/g) and Fe3+ (206.03 mg/g), in which model fitting results revealed that the adsorption process was chemisorption and monolayer interaction. Further, the interfacial interaction between the phosphonate and clay surface was evaluated by molecular dynamics simulation, and a new concept named the interaction region indicator was used to characterize weak interaction and coordinate bonds. The deep insight into the chelation mechanism was visually presented via the orbital interaction diagram. In addition, the regeneration of the spent adsorbent, adsorption column test, and acute toxicity analysis demonstrated that the synthesized material has immense potential in terms of practical usage for the treatment of toxic pollutants. These results provide a novel path for researchers to properly understand the adsorption behavior.

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“…Nevertheless, each heavy metal has a different complexing ability with the chelating group. Furthermore, the leaching properties of heavy metals are closely related to the compounds they form; metals that leach easily in acidic environments may be due to the formation of alkaline-precipitating substances, while the easy leaching of some metals in alkaline environments may be related to their binding to hydroxyl groups or their ability to form oxyacid anions [30,31].…”

Section: Effect Of Ph On Environmental Release Of Heavy Metals From G...mentioning

confidence: 99%

Solidification and Release Characteristics of Heavy Metals in Gypsum from Coal-Fired Power Plants

Wang,

Wei,

Zhao

et al. 2024

Energies

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Heavy metals in flue gas desulfurization (FGD) gypsum from coal-fired power plants are at risk of releaching during the processes of stockpiling and resource utilization. In this study, the effects of organosulfur chelators dithiocarbamate (DTC) and trisodium trithiocyanate-15 (TMT-15) on the solidification characteristics of heavy metals in desulphurized gypsum under different mass fractions, pH values, water contents and reaction times were investigated. The chemical composition and morphology were analyzed by inductively coupled plasma atomic emission spectrometer (ICP-AES) and scanning electron microscope (SEM). The experiments showed that both DTC and TMT-15 were effective at stabilizing the heavy metals in the FGD gypsum, with more than a 50% curing effect for all the heavy metals except Pb. DTC showed a better stabilization for Pb, Hg, Cu, Zn, and Cr, and TMT-15 showed a better curing effect for Cd. The solidified gypsum had good heavy metal stability in low-water-content environments. Increasing the mass fraction, reaction time, and pH decreased the heavy metal leaching, and the mass fraction had the greatest effect on the total heavy metal leaching concentration, followed by the reaction time and pH value.

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Experimental and theoretical studies of sodium acetyldithiocarbamate for the removal of Cu2+ and Ni2+ from aqueous solution

Cited by 14 publications

References 38 publications

Ratiometric Fluorescent Detection of Ultrasound-Regulated ATP Release: An Ultrasound-Resistant Cu,N-Doped Carbon Nanosphere

Ratiometric Fluorescent Detection of Ultrasound-Regulated ATP Release: An Ultrasound-Resistant Cu,N-Doped Carbon Nanosphere

In-Depth Study of Heavy Metal Removal by an Etidronic Acid-Functionalized Layered Double Hydroxide

Solidification and Release Characteristics of Heavy Metals in Gypsum from Coal-Fired Power Plants

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