In Zinc Research Articles

Nanoscale chirality generated in zinc(II) orthophosphate clusters: evidence by vibrational circular dichroism.

Layered zinc(II) hydroxides (LZH) intercalating the deprotonated forms of R-(-) or S-(+)-1,1'-binaphthyl-2,2'-diyl hydrogenphosphate (denoted as R- or S-BNDHPH, respectively) were prepared from Zn(NO3)2 at pH 5 and 60 °C by the mixing method. The obtained hybrid compounds (denoted as R- or S-BNDHP-/LZH, respectively) were heated from room temperature up to 800 °C under nitrogen atmosphere. According to the thermal gravimetric/differential thermal analysis measurements, hydroxyl groups were dehydrated at 270-400 °C, followed by the decomposition of organic components at 420-600 °C. X-ray diffraction patterns and scanning electron microscopy images indicated that the final products were a mixture of α-Zn3(PO4)2, ZnO crystals and non-crystalline zinc(II) orthophosphates. Vibrational circular dichroism (VCD) spectra were recorded before and after calcination. Before calcination, R- or S-BNDHP-/LZH exhibited VCD peaks assigned to intercalated R- or S-BNDHP-. The calcined products exhibited several VCD peaks in the range of 900-1200 cm-1, maintaining the mirror-image relationship between R-BNDHP-/LZH and S-BNDHP-/LZH used as starting materials. The observed peaks were assigned to the PO (symmetric), -POO-, and PO (asymmetric) stretching vibrations of the PO43- groups. According to theoretical simulations, the observed VCD activity can be rationalised in terms of vibrational coupling between two PO43- groups in a generated chiral zinc(II) orthophosphate cluster.

Solid-state structural transformation triggered by water in zinc(Ⅱ) coordination polymers based on 3,5-ditertbutyl-2-hydroxybenzoic acid:Structural characterization and dielectric properties

Single-crystal-to-single-crystal (SCSC) transformation provides a good platform for obtaining new functional coordination polymers. In this study, we demonstrate a violent and rapid structural transformation between two d10 coordination polymers (CPs). The complex 1 [Zn(3,5-thbzc)2(C2H6O)2] transformed into the complex 2 {[Zn(3,5-thbzc)2(H2O)2]·C3H7NO·2H2O} (where t = tbutyl, hbzc− = 2-Hydroxybenzoato) triggered by deionized water under standard temperature and pressure conditions in solid state. The transformation reaction was confirmed using single-crystal XRD, PXRD and SEM. The results showed that complex 1 adopts a bidentate chelate six-coordination mode, and complex 2 adopts a monodentate four-coordination mode. SEM clearly showed that complex 2 was in the form of random nanowire clusters, suggesting that their transformation required degradation of the entire crystal structure. UV–Vis–NIR spectra were used to calculate the band gaps of complexes 1 and 2, which demonstrated wide-bandgap semiconductor-like materials with ∼3.2 eV band gap widths. The results of dielectric studies of complex 1 revealed that it possessed a medium dielectric constant (κ = 6.08 at 1 kHz), while complex 2 displayed an even higher dielectric constant (κ = 7.97 at 1 kHz) at room temperature. Interestingly, parent complex 1 exhibited a small ladder-like dielectric anomaly at 188 °C, while progeny complex 2 did not. This paper describes a new strategy for preparing adjustable functional dielectric materials.

High nonlinear optical efficiency in zinc(II) and copper(I) stilbene based iminopyridine complexes: Absorption, emission analysis and advanced characterization

The novelty of this work lies in the comprehensive studies of the spectroscopic and third-order nonlinear optical properties of zinc(II) and copper(I) stilbene based iminopyridine complexes. Our previous work involved the synthesis as well as the characterization of both the free ligand and these its corresponding metal complexes and conducting quantum chemical calculations on their molecular orbitals, shedding light on their charge transfer and π-π* interactions. This makes these materials promising models for supramolecular assemblies. Thin films, obtained using the spin coating method, are characterized using Atomic Force Microscopy and Ellipsometry methods. These techniques provide valuable information about the physical properties of the layers, such as homogeneity, roughness and linear refractive index. Moreover, we present spectroscopic analysis that involve the absorption and emission of light, along with the decay time of photoluminescence in the thin films. Through advanced techniques like the Maker fringe method for third harmonic generation and the Z-scan method for recording nonlinear absorption and refraction, we demonstrate the high nonlinear optical efficiency of these complexes. This study presents how specific structural elements impacts tailoring in the enhancement of the NLO properties of these complexes. These findings underscore the potential of zinc(II) and copper(I) stilbene based iminopyridine complexes in nonlinear optics and photonics applications.

Schiff Base Derivatives in Zinc(II) and Cadmium(II) Complexation with the closo-Dodecaborate Anion

A series of Schiff base derivatives, namely N-(4-methoxyphenyl)-1-(1-methylbenzimidazol-2-yl)methanimine (L1), 4-methoxy-N-[(1-methylbenzimidazol-2-yl)methyl]aniline (L2), and 2-[(E)-(1-propylbenzimidazol-2-yl)iminomethyl]phenol (L3), were synthesized. These compounds feature different linker groups, including –CH=N–, –CH2–NH–, and –N=CH–, respectively. During the process of zinc(II) and cadmium(II) complexation in the presence of the closo-dodecaborate [B12H12]2– anion, it was observed that ligand L3 underwent degradation. Consequently, two compounds were isolated, [Zn(Bz-NH2)2(CH3COO)2] and (HBz-NH2)2[B12H12]∙2CH3CN, both containing 1-propyl-2-aminobenzimidazole (Bz-NH2), which is a degraded fragment of the ligand. Several new zinc(II) and cadmium(II) coordination compounds were synthesized and characterized using various physicochemical analysis methods, including elemental analysis, IR, and UV spectroscopy. Additionally, X-ray diffraction and Hirshfeld surface analysis were performed for compounds [Cd(L2)2(CH3CN)(H2O)][B12H12], [Zn(Bz-NH2)2(CH3COO)2], and (HBz-NH2)2[B12H12]∙2CH3CN, as well as for ligand L2.

Effect of Fluorination on the Crystal Structure, Stability and Gas Adsorption Property in Zinc(II) Metal-organic Frameworks①

Effect of Fluorination on the Crystal Structure, Stability and Gas Adsorption Property in Zinc(II) Metal-organic Frameworks①

Luminescence of ESIPT-capable zinc(II) complexes with a 1-hydroxy-1H-imidazole-based ligand: exploring the impact of substitution in the proton-donating moiety.

The rational design of ESIPT-capable metal complexes (ESIPT - Excited State Intramolecular Proton Transfer) requires two sites, namely, an ESIPT site and a metal binding site, to be spatially separated into the ligand core. Ligands featuring such sites are able to bind metal ions without being deprotonated upon their coordination. The use of ESIPT-capable ligands for the synthesis of metal complexes paves the way toward the exploration of ESIPT in the field of coordination chemistry. In this study, we present a new ESIPT-capable ligand on the base of 1-hydroxy-1H-imidazole, 1-hydroxy-5-methyl-4-[(2,2'-bipyridin)-6-yl]-2-(pyridin-2-yl)-1H-imidazole (HLb), and a series of ESIPT-capable zinc(II) halido complexes, [Zn(HLb)X2] (X = Cl, Br, I). Due to the incorporation of a (2,2'-bipyridin)-6-yl group at position 4 of the imidazole cycle, HLb acts as an N,N,N-chelating ligand. In the solid state, HLb and [Zn(HLb)X2] emit in the yellow region of the spectrum with excited state lifetimes in the nanosecond domain. Chelation-induced emission enhancement (CHEF) effect in zinc(II) complexes leads to an increase in the photoluminescence quantum yield (PLQY) for these compounds in comparison with free HLb ligand. The ESIPT process in HLb and [Zn(HLb)X2] is barrierless. The emission of [Zn(HLb)X2] is associated with the S1T → S0 transition in the tautomeric form (T-form). In contrast, due to (i) the dark nature of the S1 state and the bright nature of the S2 state and (ii) the large S1-S2 energy gap, HLb shows weak S2T → S0 fluorescence, in violation of Kasha's rule. Finally, the analysis of atomic charges in a series of ESIPT-capable 1-hydroxy-1H-imidazoles and their zinc(II) complexes allowed us to reveal the influence of expanding π-conjugation in the proton-donating and proton-accepting moieties on the stabilization/destabilization of the T-form and on the position of the emission band.

Constructing asymmetric unsaturated copper coordination in Zinc(II)/Copper(I, II)-based metal-organic framework toward productive CO2-to-methanol photocatalytic conversion from CO2-capturing solution

Copper-based catalysts show potential advantages with respect to applications in CO2 photoreduction into valuable chemicals. However, there remain great challenges to reduce band gap energy and inhibit recombination of photogenerated electron-hole pairs. Herein, we report a metal-organic framework, Zn(II)/Cu(I, II)-BTC synthesized via facile one-pot solvothermal method. Asymmetric unsaturated tetrahedral copper coordination was verified by multiple characterizations including extended X-ray absorption fine structure and electron paramagnetic resonance analyses coupled with DFT calculations. Promoted separation and transfer of photogenerated electrons and largely inhibited recombination of electron-hole pairs contribute to a productive methanol yield of 4470 μmol·g−1·h−1, which is 107% higher than that over the parent Cu-BTC. In situ diffuse reflectance infrared Fourier transform spectroscopy measurement and DFT calculation were combined to elucidate the underlying mechanism. This study provides insights into effectively tuning separation and transfer of charge within copper-based photocatalysts and highlights the role of copper coordination in valence engineering.

Hybrid materials based on pyrene-substituted metallo phthalocyanines as sensing layers for ammonia detection: Effect of the number of pyrene substituents

In this work, the effect of the number of pyrene substituents in zinc(II) phthalocyanine molecules on the sensor properties of their hybrid materials with single-walled carbon nanotubes (SWCNT) is studied. For this purpose, hybrid materials of SWCNTs modified with five different trioxyethylenethio substituted zinc(II) phthalocyanines containing 0, 1, 2, and 4 methoxypyrene substituents in the phthalocyanine ring were prepared and characterized by Raman spectroscopy, scanning electron microscopy and inductively coupled plasma atomic emission spectrometry. The chemiresistive sensor response of the prepared hybrids toward low concentrations of ammonia (1–100 ppm) was studied to reveal the effect of the number of pyrene substituents in the phthalocyanine ring on the sensor performance of the hybrid materials. It was demonstrated that the hybrids with zinc(II) phthalocyanine bearing four methoxypyrene substituents exhibited the maximal sensor response to ammonia with the limit of detection of 0.4 ppm. The sensitivity of the hybrid materials to ammonia was shown to be much higher than to CO2, H2, H2S, CH4, ethanol, acetone, and dichloromethane vapors, however, an oxidizing gas such as NO2 was an interfering compound in the determination of ammonia. 1 ppm NO2 show the same absolute value of the response than 10 ppm NH3. The quantum-chemical calculations were performed to explain this effect as well as the dependence of the binding energy of substituted zinc(II) phthalocyanines with carbon nanotubes on the number of pyrene substituents.

Boron Cluster Anion [B12H12]2– in Zinc(II) and Cadmium(II) Complexation at the Presence of N-Donor Heterocyclic Ligands

Boron Cluster Anion [B12H12]2– in Zinc(II) and Cadmium(II) Complexation at the Presence of N-Donor Heterocyclic Ligands

Triggering excitation independent fluorescence in zinc(II) incorporated carbon dots: Surface passivation of carbon dots with zinc(II) ions by microwave assisted synthesis methods

Carbon dots (CDs), versatile nanomaterials with unique photophysical and structural properties, often have excitation-dependent fluorescence due to the presence of carboxylic groups on the surface of the nanostructure. The excitation-dependent fluorescence of CDs is valuable for bioimaging, but considered undesirable for applications where monochromatic emission is required. Here in this paper, we demonstrate a green, fast and simple way to control the excitation-dependent fluorescence of CDs by passivating carboxylic groups on the surface of CDs with zinc (II) ions through a microwave synthesis method. Conventional CDs without surface passivation had excitation-dependent fluorescence, whereas zinc(II) ion-passivated CDs had excitation-independent fluorescence. Also, the surface passivation of CDs led to an increase in the quantum yield of CDs. The present work provides an inexpensive and user-friendly way to develop carbon dots with controllable emission properties by incorporating a metal ion into carbon dots through simple microwave-assisted synthesis.

Reactivity of the dodecahydro-closo-dodecaborate anion in zinc(II) and cadmium(II) complexation at the presence of azaheterocyclic ligands

The process of zinc(II) and cadmium(II) complexation with the dodecahydro-closo-dodecaborate anion in the presence of azaheterocyclic ligands L (L = bipy, bpa, phen) has been studied. A significant influence of the process parameters (the nature of the metal and azaheterocyclic ligands, the source of the metal and dodecahydro-closo-dodecaborate anion) on the composition and structure of the resulting compounds has been established. Complex [Cd(DMF)6][B12H12] has been found to be used as precursor for the synthesis of mixed-ligand complexes with the coordinated [B12H12]2– anion. The first example of a mixed-ligand binuclear cadmium(II) complex [Cd(bpa)2[μ-B12H12]]2 with the dodecahydro-closo-dodecaborate anion coordinated through a multicenter M−H(B) bond has been obtained and structurally characterized.

Crystal structure, thermal analyses, and acetate binding properties in Zinc(II) complex of a urea-functionalized pyridyl ligand

A zinc(II) acetate complex with a urea-functionalized pyridyl ligand, [ZnL2(OAc)2]·2H2O (1) (L = N-(4-chlorophenyl)-N'-(4-pyridyl)urea), has been synthesized by the reaction of L with Zn(OAc)2·2H2O under water-containing condition. X-ray single-crystal diffraction analyses reveal that 2-D sheetlike network structure is formed by the urea N−H×××Npyridyl interactions and C–H···O interactions in the free ligand L. Complex 1 features 3-D hydrogen bonded network formed by intermolecular N−H×××O hydrogen bonds and O−H×××O hydrogen bonds involving urea groups, acetate anions and bridged water molecules. The hydrogen bonds play an important role in stabilizing the supramolecular structures. Thermal gravity analyses are used to investigate the thermal stabilities of L and 1, and the apparent activation energy (Ea) of the decompositions are also calculated, and the results indicate that the main decomposition of L needs higher apparent activation energy values Ea than that of 1. The acetate binding properties of L in solution are also evaluated by Ultraviolet-Visible (UV-Vis) spectroscopy. CCDC: 1506202, L; 1506203, 1.

Visible-Light-Initiated Free-Radical Polymerization by Homomolecular Triplet-Triplet Annihilation

<h2>Summary</h2> Polymerization reactions initiated by ultraviolet light are ubiquitous in scores of industrial applications but would markedly benefit from visible-light activation to overcome stability, energy consumption, light penetration, and sample geometry limitations. The current work leverages visible-light-driven homomolecular triplet-triplet annihilation (TTA) in zinc(II) meso-tetraphenylporphyrin (ZnTPP) to initiate facile free-radical polymerization in trimethylolpropane triacrylate (TMPTA) and methyl acrylate (MA) monomers through ultrafast electron transfer quenching. Selective Q-band (S₁) excitation of ZnTPP in the green or yellow sensitizes TTA occurring between two ³ZnTPP∗ energized chromophores, ultimately generating the highly reducing S₂ excited state on one ZnTPP molecule (E_red = −2.13 V versus saturated calomel electrode, SCE). Subsequently, this S₂ state engages in electron transfer with TMPTA or MA, thereby initiating the radical polymerization process. Bimolecular electron transfer was confirmed through optically gated fluorescence upconversion. FT-IR and EPR spin-trapping experiments verified visible-light-initiated polymerization leading to the formation of well-defined macro- and microscopic objects.

Zn2+ Ions-Immune Virucidal activities for children and adults with preventions against 2019-nCoV and COVID-19 infection

Zinc induced pediatric preventing respiratory 2019-nCoV is required that supplementation with zinc gluconate 20 mg in Zn deficient children resulted in a nearly twofold reduction of acute lower respiratory infections as well as the time to recovery. Zinc supplementation in children is associated with a reduction in the incidence and prevalence of pneumonia. Preventing 2019-nCoV pneumonia is required that zinc supplementation alone (10 to 20 mg) for more than 3 months significantly reduces in the rate of pneumonia. zinc pediatric intake may be required to be effective range 10～20 mg/d for 2019-CoV prevention, 10～30 mg/d for reduction of COVID-19 bronchitis, and 20～30 mg/d for recovery from COVID-19 pneumonia, in which Zn2+ could bind with viral surface proteins by Zn2+ions-centered tetrahedrally coordination pattern. On the other hand, for aults, the zinc-homeostatic immune concentration may provide a protective role against the COVID-19 pandemic, likely by improving the host’s resistance against viral infection. 50 mg of zinc per day might provide an additional shield against the COVID-19 pandemic, possibly by increasing the host resistance to viral infection to minimize the burden of the disease. In order to prevent that an outbreak of respiratory sickness caused by a novel coronavirus (COVID-19) has become a serious public threat and disrupted many lives,assessing the efficacy of FDA-approved Zn-ejector drugs such as disulfiram combined with interferon to treat COVID-19 infected patients has been proposed. The key strategies for preventing lung damages include avoiding direct lung infection, altering host-virus interactions, promoting immune responses, diluting virus concentrations in lung tissues by promoting viral migration to the rest of the body, maintaining waste removal balance, protecting heart function and renal function, avoiding other infections, reducing allergic reactions and anti-inflammatory. The interactions had been found on the binding specificity by Zn2+ ions-centered tetrahedral geometric coordination of the inhibitors against 3C and 3C-like proteases. In addition, transient zinc chelation TPEN and EPDTC have been noted as preventing virus replication. Zinc-induced ROS production in COVID-19 respiratory ailment and pneumonia occurs both in children and adults. In children. ROS production in zinc (Ⅱ)-immune pediatric patient with COVID-19 bronchitis and pneumonia cannot be elucidated yet. In adults, zinc induced ROS generation in pulmonary COVID-19 infected cells is that alterations of ROS-producing and scavenging pathways that are caused by respiratory viral infections are implicated in inflammation, lung epithelial disruption, and tissue damage, and, in some cases, even pulmonary fibrosis. The involvement of oxidative stress in cell deaths caused during RNA virus infection and ROS production is correlated with host cell death.

Visible-Light Initiated Free Radical Polymerization by Homomolecular Triplet-Triplet Annihilation

Polymerization reactions initiated by ultraviolet light are ubiquitous in scores of industrial applications but would markedly benefit from visible light activation to overcome stability, energy consumption, and sample geometry limitations. The current work leverages visible-light driven homomolecular triplet-triplet annihilation (TTA) in zinc(II) meso-tetraphenylporphyrin (ZnTPP) to initiate facile free-radical polymerization in trimethylolpropane triacrylate (TMPTA) monomers through ultrafast electron transfer quenching. Selective Q-band (S1) excitation of ZnTPP in the green or yellow (𝜆ex = 514.5 or 552 nm) sensitizes TTA occurring between two 3ZnTPP* energized chromophores, ultimately generating the highly reducing S2 excited state on one ZnTPP molecule (Ered = -2.13 V vs SCE). Subsequently, this S2 state engages in electron transfer with TMPTA, thereby initiating the radical polymerization process. Estimation of the free energy of the reaction combined with electrochemistry strongly suggest that electron transfer is only plausible from the S2 excited state of ZnTPP. Consistent with this hypothesis, the S1 and T1 excited states of ZnTPP showed no evidence of static or dynamic quenching by TMPTA. The bimolecular electron transfer was then verified by concentration-dependent dynamic fluorescence quenching of the ZnTPP S2 excited state using optically gated fluorescence upconversion measurements. In acetonitrile, this electron transfer was concentration-dependent, with time constants ranging between 2.57 ps to 1.04 ps, with TMPTA concentrations from 0 to 3.47 M, respectively. The dynamic bimolecular quenching rate constant (9.5 × 1011 M-1s-1, in toluene) was in the same order of magnitude with that obtained from static fluorescence measurements (3.2 × 1011 M-1s-1, in toluene). FT-IR spectroscopy confirmed visible light-initiated polymerization through monitoring consumption of the olefins in TMPTA as a function of photolysis time. EPR experiments, in conjunction with trapping radical species with 2-methyl-2-nitrosopropane (t-BuNO), identified that acrylate radicals were indeed formed through green light activation. Furthermore, we demonstrate that acrylate polymers of various macroscopic shapes as well as micron-scale objects can be produced using numerous low power visible light sources in the presence of only ZnTPP and TMPTA. These well-defined images represent the general applicability of homomolecular TTA mediated photoinitiated polymerization in both micro- and macrofabrication applications.

Cover Feature: Phosphorescence at Low Temperature by External Heavy‐Atom Effect in Zinc(II) Clusters (Chem. Eur. J. 23/2019)

Cover Feature: Phosphorescence at Low Temperature by External Heavy‐Atom Effect in Zinc(II) Clusters (Chem. Eur. J. 23/2019)

Phosphorescence at Low Temperature by External Heavy-Atom Effect in Zinc(II) Clusters.

Luminescent ZnII clusters [Zn4 L4 (μ3 -OMe)2 X2 ] (X=SCN (1), Cl (2), Br (3)) and [Zn7 L6 (μ3 -OMe)2 (μ3 -OH)4 ]Y2 (Y=I- (4), ClO4 - (5)), HL=methyl-3-methoxysalicylate, exhibiting blue fluorescence at room temperature (λmax =416≈429 nm, Φem =0.09-0.36) have been synthesised and investigated in detail. In one case the external heavy-atom effect (EHE) arising the presence of iodide counter anions yielded phosphorescence with a long emission lifetime (λmax =520 nm, τ=95.3 ms) at 77 K. Single-crystal X-ray structural analysis and time-dependent density-functional theory (TD-DFT) calculations revealed that their emission origin was attributed to the fluorescence from the singlet ligand-centred (1 LC) excited state, and the phosphorescence observed in 4 was caused by the EHE of counter anions having strong CH-I interactions.

Cisplatin enhances cell stiffness and decreases invasiveness rate in prostate cancer cells by actin accumulation

We focused on the biomechanical and morphological characteristics of prostate cancer cells and their changes resulting from the effect of docetaxel, cisplatin, and long-term zinc supplementation. Cell population surviving the treatment was characterized as follows: cell stiffness was assessed by atomic force microscopy, cell motility and invasion capacity were determined by colony forming assay, wound healing assay, coherence-controlled holographic microscopy, and real-time cell analysis. Cells of metastatic origin exhibited lower height than cells derived from the primary tumour. Cell dry mass and CAV1 gene expression followed similar trends as cell stiffness. Docetaxel- and cisplatin-surviving cells had higher stiffness, and decreased motility and invasive potential as compared to non-treated cells. This effect was not observed in zinc(II)-treated cells. We presume that cell stiffness changes may represent an important overlooked effect of cisplatin-based anti-cancer drugs. Atomic force microscopy and confocal microscopy data images used in our study are available for download in the Zenodo repository (https://zenodo.org/, Digital Object Identifiers:10.5281/zenodo.1494935).

Metal-catalyzed alkyne oxidation/CH functionalization: Effects of oxidant, temperature, and metal catalyst on chemoselectivity.

Gold-catalyzed intermolecular alkyne oxidation has attracted much synthetic attention, but mostly suffering undesired over-oxidation. Recent experiments demonstrated that over-oxidation could be dramatically suppressed in zinc(II)-catalyzed intermolecular alkyne oxidation/CH functionalization. By means of first-principle density functional theory calculations, we explored the mechanism of the M-catalyzed intermolecular alkyne oxidations (M = Zn(OTf)2 and Au+ PR3 ) as well as the effects of oxidants, temperature, and metal catalysts on chemoselectivity, in an effort to disclose the origin of the extraordinary chemoselectivity pertaining to zinc catalysis. Our calculations indicate that the Zn-catalyzed intermolecular alkyne oxidation/CH functionalization proceeds by a Friedel-Crafts alkylation mechanism rather than metal carbene insertion mechanism. The chemoselectivity of CH functionalization against over-oxidation in Zn catalysis, in comparison with gold catalysis, can be jointly controlled by four factors: (1) the use of less nucleophilic N-oxide, (2) the enhanced electrophilicity and carbocationic nature of the carbenic site in the α-oxo metal carbenoid intermediate, (3) enhanced steric repulsion to incoming oxidant exerted by bulky ancillary ligand in the close nearby of the carbenic site to disfavor intermolecular over-oxidation and (4) the large negative value of activation entropy in the intermolecular over-oxidation pathway, that jointly give rise to lower activation free energy for the intramolecular cyclization/CH functionalization pathway than for the intermolecular over-oxidation pathway. © 2018 Wiley Periodicals, Inc.

Role of Fe3O4 magnetite nanoparticles used to coat bentonite in zinc(II) ions sequestration

The use of natural bentonite (NB) coated with synthesized Fe3O4 magnetite nanoparticles (CB) was first investigated for its significance as an adsorbent to sequester zinc(II) ions in aqueous phases. The characterization study demonstrated a substantial improvement in several adsorptive parameters of NB, like surface area, surface morphology, and active sites, post coating. From the analysis of the pore sizes, the CB were observed to exhibit a highly mesoporous appearance. Batch experiments demonstrated that the removal efficiency of the Zn(II) onto the CB was affected by various factors, such as the CB dosage, initial concentration, and reaction time. Furthermore, the adsorption process increased when the pH values were close to neutral. The experimental isotherm data fitted well onto the Langmuir model with the maximum amount of Zn(II) (22.573 mg/g) being adsorbed at pH 6, when the CB dose was 0.8 g and it shaking was done at 200 rpm speed, in a reaction time of 120 min. The kinetics parameters were studied using the Brouers-Sotolongo fractal theory with its derived empirical kinetics equations. The results revealed that the Hill model, introduced with a time-dependent fractal time, is the best fit for the experimental kinetics data. From the results of this study, it appears that the CB can be used as a potential agent in the adsorption systems for the remediation of the Zn(II)-rich wastewater.