Allyl Acetoacetate Research Articles

Opening and Constructing Stable Lithium-ion Channels within Polymer Electrolytes.

Lithium-ion batteries play an integral role in various aspects of daily life, yet there is a pressing need to enhance their safety and cycling stability. In this study, we have successfully developed a highly secure and flexible solid-state polymer electrolyte (SPE) through the in situ polymerization of allyl acetoacetate (AAA) monomers. This SPE constructed an efficient Li+ transport channel inside and effectively improved the solid-solid interface contact of solid-state batteries to reduce interfacial impedance. Furthermore, it exhibited excellent thermal stability, an ionic conductivity of 3.82×10-4 S cm-1 at room temperature (RT), and a Li+ transport number (tLi+) of 0.66. The numerous oxygen vacancies on layered inorganic SiO2 created an excellent environment for TFSI- immobilization. Free Li+ migrated rapidly at the C=O equivalence site with the poly(allyl acetoacetate) (PAAA) matrix. Consequently, when cycled at 0.5C and RT, it displayed an initial discharge specific capacity of 140.6 mAh g-1 with a discharge specific capacity retention rate of 70 % even after 500 cycles. Similarly, when cycled at a higher rate of 5C, it demonstrated an initial discharge specific capacity of 132.3 mAh g-1 while maintaining excellent cycling stability.

Opening and Constructing Stable Lithium‐ion Channels within Polymer Electrolytes

AbstractLithium‐ion batteries play an integral role in various aspects of daily life, yet there is a pressing need to enhance their safety and cycling stability. In this study, we have successfully developed a highly secure and flexible solid‐state polymer electrolyte (SPE) through the in situ polymerization of allyl acetoacetate (AAA) monomers. This SPE constructed an efficient Li+ transport channel inside and effectively improved the solid‐solid interface contact of solid‐state batteries to reduce interfacial impedance. Furthermore, it exhibited excellent thermal stability, an ionic conductivity of 3.82×10−4 S cm−1 at room temperature (RT), and a Li+ transport number (tLi+) of 0.66. The numerous oxygen vacancies on layered inorganic SiO2 created an excellent environment for TFSI− immobilization. Free Li+ migrated rapidly at the C=O equivalence site with the poly(allyl acetoacetate) (PAAA) matrix. Consequently, when cycled at 0.5C and RT, it displayed an initial discharge specific capacity of 140.6 mAh g−1 with a discharge specific capacity retention rate of 70 % even after 500 cycles. Similarly, when cycled at a higher rate of 5C, it demonstrated an initial discharge specific capacity of 132.3 mAh g−1 while maintaining excellent cycling stability.

Add an Extra Layer to Bring Lithium‐Ions Out of Disorder for Longevity of the Solid Full Batteries

AbstractIn the current era of rapid development in the new energy vehicle industry, graphite (Gr) has gained significant attention as the primary anode material for commercial lithium‐ion batteries due to its exceptional reversibility in lithium‐ion insertion/extraction and abundant availability. In this study, a multifunctional ferroelectric Bi12TiO20@C (BIT@C) modified interlayer between Gr and polymer electrolyte (PE) is fabricated. This approach established a channel and homogeneous ion‐conducting network that facilitated lithium‐ion intercalation into Gr at the interface while suppressing erratic lithium precipitation, thereby stabilizing the structure of Gr. The uniform electric field generated by BIT intercalation enabled homogeneous intercalation/deintercalation of lithium ions, effectively preventing the structural collapse of the Gr anode. Assembled LIBs exhibited reduced polarization and enhanced electrochemical properties attributed to facile charge transfer at the interface. The results revealed that Gr│carbon‐BIT@C‐lithium bistrifluoromethane sulfonimide (LiTFSI)/silicon dioxide (SiO2)/poly allyl acetoacetate (PAAA)/poly(vinylidene fluoride‐hexafluoropropylene) (P(VDF‐HFP))/polyvinylidene fluoride (PVDF)│LiFePO4 (LFP) batteries achieved an initial discharge specific capacity of 120.4 mAh g−1 with stable performance over 1200 cycles at 2 C and room temperature (RT), maintaining a Coulombic efficiency of 99.5% after 1200 cycles. The ferroelectric‐modified interface addressed challenges associated with ion transport at the electrode‐electrolyte interface.

Elucidation of hydrogen bond strength of benzylalcohol with alkyl Acetoacetates: The confirmation study by excess thermodynamic Properties, FTIR and DFT analysis

In this study, density of pure liquids and their binary mixtures of benzylalcohol (BA) with methyl acetoacetate (MAA), ethyl acetoacetate (EAA) and allyl acetoacetate (AAA) were measured experimentally at T=(298.15–313.15) K and P = 0.1 MPa by using Rudolph Research Analytical digital densitometer. Experimental data was correlate by applying Jouyban–Acree theoretical equation. Furthermore, the speed of sound of all studied pure and their binary solutions were measured at T= (298.15 and 308.15) K at atmospheric pressure at 2 MHz. The experimental density and speed of sound data further were used to calculate the excess molar volume (VmE), isentropic compressibility (κs), excess isentropic compressibility (κsE) and excess speed of sound (uE) at all compositions and temperature ranges. The calculated VmE, κsE, uE and experimental speed of sound were compared with theoretical models such as Redlich-Kister, Hwang, CFT and FLT equations. The obtained data were analyzed in terms of intermolecular interactions such as hydrogen bond formation between two atoms of benzylalcohol and acetoacetates. Among all the three systems, BA + MAA showed highest negative excess molar volume magnitude due to the change of molecular geometry through the keto-enol tautomerism. The negative magnitude of VmE data confirms the formation of H-bond between the –OH---O- groups of component molecules. Similarly, BA + EAA system showed highest negative magnitude of κSE owing to the more compressible than resultant ideal solutions. The deviation in κSE magnitude in binary systems due to the geometrical fitting and specific interactions in atoms of the benzylalcohol and acetoacetates. Furthermore, the existence of hydrogen bond and its strength in binary mixtures were confirmed by experimental FTIR spectroscopy and theoretical density functional theory (DFT) calculations.

Phase equilibria for the two-component systems of allyl acetoacetate, methyl acetoacetate and ethyl acetoacetate under high-pressure CO2

The phase behavior study of allyl acetoacetate, methyl acetoacetate, and ethyl acetoacetate in supercritical CO2 (S-CO2) is important for several industrial processes. This study investigated the binary mixture solubility curves of the three systems (allyl acetoacetate, methyl acetoacetate, and ethyl acetoacetate) at five temperature sets (313.2–393.2 K) and pressures (3.09 ≤ p ≤ 20.78 MPa). In S-CO2, the three systems exhibited a critical mixture curves and the maximum point in pressure–temperature (p-T) diagram was obtained between critical point of allyl acetoacetate/methyl acetoacetate/ethyl acetoacetate and that of CO2. These characteristics of the critical mixture plot fall under the category of type-I behavior. The experimental solubility curves and critical mixture curves of above three systems are correlated using Peng-Robinson equation of state with van der Waals mixing rules using two interaction parameters. The calculated root mean square relative deviation % (RMSD %) of the allyl acetoacetate + S-CO2, methyl acetoacetate + S-CO2, and ethyl acetoacetate + S-CO2 systems for five temperature sets ranges from (1.29% − 3.63%), (1.47% − 8.95%) and (2.17% − 3.87%), respectively.

Synthesis and Characterization of Zinc Oxide Nanoparticles Grafted Poly [(N, N-Dimethylacrylamide)-co-(Allyl Acetoacetate)] for Removal of Pb (II) in Environmental and Biological Samples

ABSTRACT In this work, a novel nanoadsorbent is reported for the surface grafting of poly[(N, N- dimethylacrylamide)-co-(allyl acetoacetate)] onto zinc oxide nanoparticles by free radical polymerization method for removal of Pb(II) in water and biological samples. The obtained nanoadsorbent was characterized by thermogravimetric analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy. The calibration curve was linear in the concentration range of 2–100 mg L−1 with a removal efficiency in the range of 70–98%. Under the optimal conditions, the nanoadsorbent offered high adsorption capacity (56.20 mg g−1), low limit of detection (S/N = 3) of 11 ng mL−1 and the limit of quantification (S/N = 10) of 37 ng mL−1 with a relative standard deviation of <2% (n = 3). The results indicate that the Freundlich isotherm model and pseudo-second-order kinetic model are the best models that describe the sorption system.

A Highly Salt-Soluble Ketone-Based All-Solid-State Polymer Electrolyte with Superior Performances for Lithium-Ion Batteries

Solid polymer electrolytes (SPEs) have great potential to be used in high-safety lithium-ion batteries (LIBs). However, it is still a significant challenge for SPEs to develop high ionic conductivity, high mechanical strength, and good interior interfacial compatibility. In this work, a ketone-based all-solid-state electrolyte (PAD) resulting from allyl acetoacetate (AAA), diacetone acrylamide (DAAM), and poly(ethylene glycol) diacrylate (PEGDA) was prepared by UV-inducing photopolymerization. The abundant ketone groups endow the prepared PAD all-solid-state electrolyte with strong dissociation of lithium salts and weak coordination interactions between ketone groups and Li+. Depending on the unique properties of the ketone groups in the electrolyte system, the prepared polymer electrolytes show a high lithium-ion transference number of 0.87 and a wide electrochemical window of 4.95 V. Furthermore, the PAD electrolyte also exhibits superior viscoelasticity, which is beneficial for good contact with electrodes. As a result, the assembled LFP/PAD/Li cells with PAD electrolytes show good cycle performance and rate performance. Concretely, the all-solid-state symmetric lithium cells with the PAD electrolyte can achieve stable lithium plating and stripping at 0.05 mA cm-2 for over 1000 h at 60 °C. This work highlights the advantages of ketone-based electrolyte as a polymer electrolyte and provides a design method for advanced polymer electrolytes applied in high-performance solid lithium batteries.

Survival of Nematode Larvae Strongyloides papillosus and Haemonchus contortus under the Influence of Various Groups of Organic Compounds

Many chemically synthesized xenobiotics can significantly inhibit the vitality of parasitic nematodes. However, there is yet too little research on the toxicity of such contaminating compounds toward nematodes. Compounds that are present in plants are able to inhibit the vitality of parasitic organisms as well. According to the results of our laboratory studies of toxicity, the following xenobiotics caused no decrease in the vitality of the larvae of Strongyloides papillosus and Haemonchus contortus: methanol, propan-2-ol, propylene glycol-1,2, octadecanol-1, 4-methyl-2-pen-tanol, 2-ethoxyethanol, butyl glycol, 2-pentanone, cyclopentanol, ortho-dimethylbenzene, dibutyl phthalate, succinic anhydride, 2-methylfuran, 2-methyl-5-nitroimidazole. Strong toxicity towards the nematode larvae was exerted by glutaraldehyde, 1,4-diethyl 2-methyl-3-oxobutanedioate, hexylamine, diethyl malonate, allyl acetoacetate, tert butyl carboxylic acid, butyl acrylate, 3-methyl-2-butanone, isobutyraldehyde, methyl acetoacetate, ethyl acetoacetate, ethyl pyruvate, 3-methylbutanal, cyclohexanol, cyclooctanone, phenol, pyrocatechin, resorcinol, naphthol-2, phenyl ether, piperonyl alcohol, 3-furoic acid, maleic anhydrid, 5-methylfurfural, thioacetic acid, butan-1-amine, dimethylformamide, 1-phenylethan-1-amine, 3-aminobenzoic acid. Widespread natural compounds (phytol, 3-hydroxy-2-butanone, maleic acid, oleic acid, hydroquinone, gallic acid-1-hydrate, taurine, 6-aminocaproic acid, glutamic acid, carnitine, ornithine monohydrochloride) had no negative effect on the larvae of S. papillosus and H. contortus. A powerful decrease in the vitality of nematode larvae was produced by 3,7-dimethyl-6-octenoic acid, isovaleric acid, glycolic acid, 2-oxopentanedioic acid, 2-methylbutanoic acid, anisole, 4-hydroxy-3-methoxybenzyl alcohol, furfuryl alcohol. The results of our studies allow us to consider 28 of the 62 compounds we studied as promising for further research on anti-nematode activity in manufacturing conditions.

A novel pH-and temperature sensitive polymer based on MoS2 modified poly (N-Isopropyl Acrylamide)/ allyl acetoacetate for doxorubicin delivery: synthesis, characterization, in-vitro release and cytotoxicity studies

A novel pH-and temperature sensitive polymer based on MoS2 modified poly (N-Isopropyl Acrylamide)/ allyl acetoacetate for doxorubicin delivery: synthesis, characterization, in-vitro release and cytotoxicity studies

A ketone-containing all-solid-state polymer electrolyte with rapid Li-ion conduction for lithium metal batteries

Solid-state polymer electrolytes (SPEs) have gained considerable attention in the application of all-solid-state lithium batteries (ASSLBs), but the low ionic conductivity at room temperature and inferior interfacial compatibility largely drag the practical development of SPEs. Herein, a ketone-containing poly(allyl acetoacetate) (PAAA) based polymer electrolyte is designed and prepared for the first time. The structure of ester and ketone groups provides PAAA polymers with not only strong dissociation of lithium salts but also weak coordination interactions with Li+ ions. Thus the prepared PAAA polymer electrolytes show excellent ion conductive behavior with ionic conductivity as high as 1.1 × 10-4 S cm−1 at 30 °C. Moreover, the PAAA polymer electrolytes still maintain superior viscoelasticity without compromising mechanical integrity. When assembling cells, the reduction-tolerant poly(ethylene oxide) (PEO) polymer electrolytes are employed as interlayers between the PAAA SPEs and lithium electrodes in order to improve interfacial stability. As a result, the hierarchical polymer electrolytes possess wide electrochemical window above 4.8 V, thus matching well with LiFePO4 or Li1.2Ni0.2Mn0.6O2 high-voltage cathode. The hierarchical structure does not affect interfacial contact, and the Li/PEO-PAAA-PEO/Li cells show low interfacial resistance and stable striping/plating behavior for at least 500 h at 0.2 mA cm−2 and 60 °C. This study enriches carbonyl-based polymer electrolytes by allying ketone with ester groups, and provides guidance for designing novel high-performance polymer electrolytes for practical application.

Eu(III)-Templated molecularly imprinted polymer used as a luminescent sensor for the determination of tenuazonic acid mycotoxin in food samples

Tenuazonic acid (TeA) is a common mycotoxin produced by Alternaria species found in various foodstuffs. Herein, we describe the preparation of porous molecularly imprinted polymer (MIP) microspheres doped with Eu(III), for selective fast analysis of TeA in rice extracts. The TeA template, bearing a β-diketone moiety, is a good Eu(III)-chelating antenna ligand that can be selectively captured in the MIP cavities and detected by observing the “turned-on” sensitized luminescence of the Eu(III) ions at 615 nm (λex 337 nm). A MIP library was prepared at small scale using diethyl allylmalonate (DEAM) or allyl acetoacetate as functional monomers, mixed in different mole ratios with the template and ethylene glycol dimethacrylate (EDMA) as cross-linker. The screening allowed selection of poly(DEAM-co-EDMA) with Eu(III) as luminogenic metal center for the sensor development. Under the optimized conditions, a linear response to TeA in the 1.7–20 μg mL−1 range, with a detection limit of 0.5 μg mL−1, was obtained. The Eu(III)-doped MIP for TeA showed very little or no cross-recognition of other mycotoxins present in foodstuff such as alternariol, β-zearalenol and cyclopiazonic acid, even containing the same recognition moiety. The MIP-based optosensor was successfully applied to the analysis of rice extracts spiked with TeA, and the results were confirmed by HPLC-DAD.

Preparation of ion-exchange resin via in-situ polymerization for highly selective separation and continuous removal of palladium from electroplating wastewater

To separate palladium (Pd) from electroplating wastewater, a novel mesoporous ion-exchange resin (SiAcyl) was prepared with the loading rate of 27.3 wt% and the cross-linking degree of 10 wt%. It was synthesized by using macroporous silica as inorganic carrier, acrylic acid, and allyl acetoacetate as monomers, EGDMA as cross-linking agent, AIBN as chemical initiator, dimethyl sulfoxide as diluent. The as-prepared SiAcyl resin was characterized by SEM-EDS, TG-DSC, N2-adsorption–desorption isotherm analysis, which revealed its characterization of high loading rate, mesoporous structure, and large specific surface area. It exhibited significant advantages in Pd separation and recovery, such as significant selectivity (SFPd/M > 124 in pH = 1.95 nitric acid solution), remarkable adsorption capacity (92.6 mg·g−1 Pd), and excellent reusability (n > 5). Moreover, the column separation technique was employed to better evaluate the feasibility of separation of Pd from actual electroplating wastewater by SiAcyl resin that a recovery yield about 100% of Pd and complete separation of Pd from other metal ions were obtained. Compared with several traditional commercial resins, SiAcyl resin exhibited great advantages and potential in industrial applications. Furtherly, XPS and FT-IR analysis demonstrated the ion-exchange between H+ (from –COOH) and Pd(II) is the mechanism during the whole adsorption process.

Luminescent properties of heterometallic β-dicarbonyl complexes and polymers on their basis

The heterometallic β-dicarbonyl complexes of MLnL5⋅2H2O (M = Ni(II), Cu(II), Zn(II); Ln = Nd(III), Yb(III); L = mphpd (2-methyl-5-phenyl-1-penten-dione-3,5), alacac (allyl-3-oxobutanoate, allyl acetoacetate) were synthesized. Metallopolymers on their basis were obtained in two ways: by radical homopolymerization of heterometallic monomeric complexes and copolymerization of two monometallic complexes. The complexes were fully characterized using FTIR, elemental and thermal analyses. Absorption, diffuse reflectance and fluorescence emission spectra for the complexes were recorded. The relationship between complex structure and the intensity of fluorescence emission was established.

IR Spectroscopic Study of Lanthanide Hydroxo Complexes with Esters of Acetoacetic Acid

The IR spectra of hydroxo complexes of lanthanides (Ln) with the β-ketoesters methyl, ethyl, and allyl acetoacetate with the general formula LnL2OH·H2O (Ln = La, Gd, Lu; L = β-ketoesterate anion) were studied in the range of 400–1700 cm–1. In order to interpret the spectra and assign bands to the vibrations of the β-ketoesterate ligands a normal coordinate analysis of the model complexes LnL(OH)2 (Ln = La, Lu) was performed in the PBE0/ECP46(60) MWB + DZP approximation. The experimental data and the theoretical calculations show that the radius of the Ln(III) ion and the structure of the hydrocarbon radical of the alkoxyl substituent have a negligible effect on the value of π-electron delocalization in the [OCCCO] conjugated system of the chelate fragment, whereas the decrease of the Ln(III) ionic radius leads to increase of conjugation in the ester C(O)O group of the ligands.

Insights into the preparation of water-based acrylic interior decorative paint: tuning binder’s properties by self-crosslinking of allyl acetoacetate - hexamethylenediamine

In order to study the self-crosslinking mechanism of an acrylic-based copolymer emulsion, the stable, one pack (1 K), room temperature curing copolymer was synthesized by semi-continuous seeded emulsion polymerization using butyl acrylate (BA), styrene, acrylic acid (AA), acrylamide and allyl acetoacetate (AAA) as a monomers and hexamethylenediamine (HDA) as a crosslinker. Fourier transform infrared (FT-IR) spectrogram confirmed that crosslinking reaction between carbonyl groups of AAA and amine groups of HDA can occur during film formation at low temperature, even at ambient temperature. Differential scanning calorimeter (DSC) analysis indicated that glass transition temperature of crosslinked film was increased by 8 °C. Thermogravimetric analysis (TGA) curves verified that crosslinking improved the thermal stability of a film. Also, the prepared films were tested by dynamic mechanical analysis (DMA) for the determination of storage modulus and tangent delta. Crosslinking was enumerated through degree of swelling measurement. It was seen that degree of crosslinking of a film was increased with increase in AAA content. Other properties of acrylic binder were determined by viscosity, solid content, pH, water resistance, gloss, % elongation, particle size, pencil hardness, flexibility and freezing-thawing resistance. Subsequently, white latex paint was prepared using acrylic binder. Physical and performance properties of paint were determined by viscosity, solid content, water uptake, percent elongation at break, pencil hardness, flexibility, impact resistance, dirt pick-up resistance, stain resistance, scrub resistance and coverage capacity. The results confirmed that acrylic binder with 2.0% AAA leads to a good performance and has potential application for interior decorative paints.

The new nir-emitting compounds based on β-dicarbonyl ligands

The Nd(III), Er(III) and Yb(III) complexes with allyl-3-oxobutanoate (allyl acetoacetate), 2-methyl-5-phenyl-1-penten-dione-3,5 (methacrylacetophenone) and their phenanthroline adducts were synthesized. Metallopolymers were obtained by radical polymerization. In all complexes β-dicarbonyl ligands are coordinated to central ions in a bidentate-cyclic mode. Thermal stability was shown to be higher for metallopolymers than for monomeric complexes. It was found that the displacement of water from the inner coordination environment of the Ln(III) ion and polymerization cause only minor deformation of the coordination polyhedrons, which all have non-cubic symmetry. The relative luminescence intensity of the complexes increases in the LnL3⋅2H2O < [LnL3]n < LnL3⋅Phen series. Among all studied lanthanides erbium compounds have the lowest luminescence intensity.

Near infrared electroluminescence polymeric systems containing β-diketones and lanthanides as emitters for organic light-emitting diodes

Nd(III), Er(III), and Yb(III) complexes with allyl-3-oxobutanoate (allyl acetoacetate) and their phenanthroline adducts as mixed ligand complexes (MLC) are synthesized. The polycomplexes on their basis and copolymers with methyl methacrylate in a ratio of 5:95 are obtained by the free-radical polymerization. The results of studies have shown that the configuration of the chelate unit is unchanged during the polymerization. By the luminescent spectroscopy, we have established that the luminescence intensity of MLC is considerably higher than for monoligand complexes due to the absence of water molecules in the coordination environment of Ln (III). The relative intensity of luminescent copolymers with methyl methacrylate on the MLC basis is significantly higher than that of the corresponding homopolymers, but lower than for mixed metal alloy complexes.

Synthesis and ionic conductivity of siloxane based polymer electrolytes with pendant propyl acetoacetate groups

Abstract Hydrosilylation reaction of 2.4.6.8-tetrahydro-2.4.6.8-tetramethylcyclotetrasiloxane (D4 H) with allyl acetoacetate at 1:4.1 molar ratios of initial compounds in the presence of platinum hydrochloric acid (0.1 M solution in THF), Karstedt’s catalyst (Pt2[(VinSiMe2)2O]3) and platinum on the carbon have been carried out and D4 R type compounds obtained. Reaction order, rate constants and activation energies for hydrosilylation reactions in the presence of Karstedt’s catalyst have been determined. Ring-opening polymerization reaction of D4 R in the presence of catalytic amounts of powder-like potassium hydroxide has been carried out. A linear methylsiloxane oligomer with regular arrangement of propyl acetoacetate groups in the side chain has been obtained. The synthesized methylorganocyclotetrasiloxane and oligomers were studied by FTIR, 1H, 13C and 29Si NMR spectroscopy. Comb-type oligomers were characterized by gel-permeation chromatography, wide-angle X-ray diffractometry and differential scanning calorimetry. Solid oligomer electrolyte membranes have been obtained via sol–gel processes involving lithium trifluoromethylsulfonate (triflate) or lithium bis(trifluoromethylsulfonyl)imide. The specific volumetric electrical conductivity of the membranes at room temperature covers a wide range, from 10−10 to 10−4 S · cm−1, and depends on the structures of grafted anion receptors and the polymer backbones. Higher values of the specific conductivity are seen for the membranes containing triflate.

Nickel Chloride Hexahydrate Catalyzed Multicomponent Biginelli's Synthesis of 3,4‐Dihydropyrimidin‐2(1H)‐Ones and Thiones

An efficient protocol is reported for the one‐pot three‐component Bignelli synthesis of a series of 3,4‐dihydropyrimidine‐2(1H)‐ones and thiones in good yields (66–90%) from the aldehydes (4‐benzyloxybenzaldehyde, 5‐bromovanilin, 4‐formyl‐1‐cyclohexene, and trans‐cinnamaldehyde), β‐keto esters (ethyl acetoacetate, allyl acetoacetate, and t‐butyl acetoacetate), and urea/thiourea in ethanol, using nickel chloride hexahydrate as a catalyst.

Modification of graphene oxide by introduction of allyl acetoacetate functionality and its application as a novel nanoadsorbent in cadmium removal from water

In this study graphene oxide was functionalized by divinylsulfone and allyl acetoacetate conducting a simple route. This novel functionalized graphene oxide [graphene oxide grafted with allyl acetoacetate (GO-GAA)] was characterized by X-ray diffractometry, field emission scanning electron microscopy, and transmission electron microscopy analyses. Thereafter the adsorption property of GO-GAA for Cd2+ ion removal from aqueous media was investigated. The effect of several factors such as pH and temperature on the Cd2+ adsorption was also studied. It was found that the adsorption isotherm follows the Langmuir–Freundlich model and the maximum adsorption capacity was 71 mg/g for GO-GAA toward Cd2+ at 20 °C at pH 7. The fast adsorption kinetics which takes less than 2 min was following the pseudo-first-order model. The synthesized nanoadsorbent also showed a good reusability, even after ten cycles of adsorption–desorption using HNO3 as regenerating agent. Furthermore applicability of synthesized nanoadsorbent for Cd2+ removal from industrial wastewater and well water samples inoculated with cadmium was investigated and over 82 % efficiency was observed.