Anodization Method Research Articles

Development of a Disposable Pencil Graphite Electrode Modified with Poly 1,5-Diaminonaphthalene for Voltammetric Determination of Flufenamic Acid

Due to their comparable electrical properties, pencil graphite electrodes (PGE) have become a more popular electrode in electrochemical applications than traditional carbon electrodes, mostly because of their affordability and availability, which allows for disposable applications. Both cyclic voltammetry (CV) and chronoamperometry (CA) techniques were used to develop a new disposable modified pencil graphite electrode based on the electropolymerization of 1,5-diaminonaphthalane (1,5-DAN). Characterization results confirmed that the modified p-1,5-DAN/PGE(CV) sensor showed much enhanced sensitivity and lower resistivity than the bare and p-1,5-DAN/PGE(CA) sensor, therefore, it was used for the sensitive and selective voltammetric determination of flufenamic acid (FFA). Under the optimum experimental conditions, the p-1,5-DAN/PGE(CV) sensor showed limits of detection (LOD) and quantitation (LOQ) of 4.97 × 10−10 (0.14 ng ml−1) and 1.66 × 10−9 M (0.47 ng ml−1), respectively, applying square wave anodic stripping voltammetry method. The p-1,5-DAN/PGE(CV) sensor also exhibits good accuracy, repeatability, storage stability and selectivity for detecting FFA in biological fluids. These results confirms that the developed p-1,5-DAN/PGE(CV) sensor is more sensitive to measuring FFA in biological fluids, pharmaceutical formulations, and pharmacokinetic studies compared with the previous electrochemical sensors.

Preparation and characterization of novel SnO2-GO/TiO2NTs electrode for the degradation of electroplating effluents

A novel SnO2-loaded GO/TiO2NTs (nanotubes) electrode was synthesized by an anodization method for the electrochemical oxidation (EO) of heavy metals in the synthetic electroplating solution to improve the electrode's stability. The electrode morphology, structure, and characteristics were characterized with various spectroscopic and microscopic approaches to confirm the synthesis of the intended nanotube electrode material. The successful electrochemical deposition of GO on the TiO2 plate and subsequent SnO2 loading on the GO/TiO2NTs electrode was observed by FESEM analysis. EDS analysis confirmed that 3.76%wt of tin (Sn) nanoparticles were formed over the GO/TiO2 substrate. The crystallite size of SnO2-loaded GO/TiO2NTs, i.e., 16.90 nm, was confirmed by XRD analysis. For the first time, the performance of SnO2-loaded GO/TiO2NTs electrode was tested for the reduction of the aqueous solution, containing chromium (Cr)(VI), zinc (Zn), and citric acid (CA) as model pollutants. The effect of operating parameters like solution pH and current density (j) on degradation efficacy was studied. EO using SnO2-loaded GO/TiO2NTs led to > 98% degradation of heavy metal ions and > 88% degradation of chemical oxygen demand (COD) after 130 min of oxidation under optimized conditions (50.16 mA/cm2 current and pH 4). Furthermore, a reusability study of the synthesized electrode has also been conducted. The electrodes were durable enough to be used even after thirty cycles. Hence, this study demonstrates that combining titanium dioxide (TiO2) and graphene oxide (GO) embellished with tin oxide (SnO2) nanoparticles can be an efficient and cost-effective electrode for removing electroplating effluents.

Highly broadband plasmonic Pt nanoparticles modified α-Fe2O3/TiO2 nanotubes for efficient photoelectrochemical water splitting

In order to develop an efficient photocatalyst electrode for water splitting and solar energy harvesting in the visible region, TiO2 nanotubes arrays (TiNT) modified by hematite (α-Fe2O3) and broadband plasmonic platinum (Pt) nanoparticles have been successfully synthesized via electrochemical anodization and electrodeposition methods. α-Fe2O3 and Pt nanoparticles were electrodeposited on TiNT at different durations, namely 25, 50 and 100s.Interestingly, compared with pure TiNT, important improvement in photocurrent densities and photoconversion efficiencies were found. The optimal Pt nanoparticle size (50–90 nm), achieved at a deposition time of 50s, resulted in a stronger visible light absorption and much higher photocurrent. Pt(50s)/TiNT photoelectrode reached photocurrent density value of 2.3 mA/cm2 at 1.23 V vs. RHE, which is more than 100 times that of pristine TiNT. An impressive maximum photoconversion efficiency of about 10% was reached by Pt/α-Fe2O3/TiNT photoelectrode. The improved photoelectrochemical activity of the photoelectrode can be ascribed to the better absorption of visible light due to the presence of optimally sized Pt nanoparticles with surface plasmon resonance effect (SPR) and more efficient charge separation/transport owing to the presence of α-Fe2O3/TiNT heterojunction.

Enhanced wear resistance and surface properties of oxide film coating on biocompatible Ti45Nb alloy by anodization method

β-Titanium alloys have become increasingly popular as biomaterials because of their low modulus of elasticity and superior corrosion properties in recent years. β-titanium alloy containing niobium is also a biocompatible and non-toxic material. Among β-Ti alloys, Ti45Nb is one of the most remarkable alloys for its superior properties as a biomaterial. This alloy has superior properties due to low elasticity modulus and non-toxic elements, but its surface properties are inadequate for biomaterial applications. Therefore, various surface treatments are applied to improve the surface properties of these alloys. In this study, an oxide film layer was formed on the Ti45Nb surface under different potential conditions by the anodizing method. The effects of these factors on friction, wear, and contact angle measurements were investigated. The structural properties of the oxide film coated samples were analyzed with XRD and their surfaces and cross-sectional images were observed by SEM. Also, the surface roughness and nanoindentation tests were performed. In this regard, it was determined that oxide film thickness, surface roughness and hardness increased with the increase of anodization potential. The contact angle of the samples decreased with the increase in the anodization potential and the surface tension of the materials increased. The highest nanohardness of about 4.19 GPa was obtained from 150 TA samples. The elasticity modulus of the untreated sample was about 63 GPa, while the anodized samples ranged from an average of 31 to 83 GPa. The wear results revealed that the anodization process improved the wear resistance of the Ti45Nb alloy. As a result, the sample anodized at 200 V for 30 min exhibited optimum surface roughness, morphology and high wear resistance.

Photogenerated cathodic protection properties of Fe2O3 nanotubes prepared by anodic oxidation

Photogenerated cathodic protection as a new type of corrosion protection method has evoked great attention. The n-type semiconductor is normally selected as the photogenerated cathodic protection composite. α-Fe2O3 is a typical n-type semiconductor, which is easy to obtain and environmental-friendly. However, it is normally prepared on the FTO substrate and could hardly protect carbon steel. In this study, α-Fe2O3 nanotubes are fabricated on carbon steel by anodic oxidation method at different oxidation potentials. The corresponding surface morphologies, compositions, and optical absorption properties are characterized with SEM, Raman spectroscopy, and UV-Visible spectrometer. The photoelectrochemical tests show that the prepared α-Fe2O3 can supply cathodic protection to carbon steel. The maximum photogenerated potential drop is obtained for the α-Fe2O3 sample prepared under 50 V at 30 ℃ for 450 s anodic oxidation. It is revealed that the fine structure is benefit to capture light and enhances the photogenerated cathodic protection performance to carbon steel.

Development of a Multi‐Element Copper‐Phosphorus‐Based Electrode for Efficient Hydrogen Evolution Reaction

AbstractThe development of efficient, abundant, and inexpensive catalytic materials for hydrogen evolution is key to industrial water electrolysis for hydrogen production. In this study, we utilized an anodic dissolution method to form a layer of gray film on the surface of a commercially available copper‐phosphorus alloy plate. The composition of the gray film, as verified by characterization, was Ni2P/Ni12P5/Sn4P3/Cu3P@Cu. The heterogeneous interface of Ni2P/Ni12P5 and the amorphous structure of Sn4P3/Cu3P provide more exposed active sites. The effectiveness of the Ni2P/Ni12P5/Sn4P3/Cu3P@Cu as an electrocatalyst for hydrogen evolution was demonstrated, with a corresponding hydrogen evolution overpotential of 73.10 mV and Tafel slope of 45.55 mV dec−1. Moreover, the outstanding stability of hydrogen evolution reaction (HER) after 1000 cyclic voltammetry (CV) cycles in an alkaline medium infers its favorable electrocatalytic durability.

Study on the preparation method of porous membranes with single pore size distribution and tailored pore sizes by the induced swelling effect of pre-set graft side chains

To improve the sieving accuracy of material separation, it is necessary to develop a porous membrane with tailored pore size and narrow pore size distribution. Polyvinylidene fluoride (PVDF), the mainstream membrane material, is a semi-crystalline polymer. On the basis of the high elastic state of the PVDF molecular chain in the amorphous region at room temperature, a novel method was proposed to prepare porous membranes with single pore size distribution and tailored pore sizes in this paper. First, 1,3-bis (tris(hydroxymethyl)methylamino) propane (Bis-Tris propane) was grafted onto the PVDF-CTFE main chain during casting solution preparation, and the membranes with the thin and nonporous skin layers were prepared by non-solvent-induced phase separation (NIPS), which had almost no water flux. The membrane with the nonporous skin layer produced a water flux of 35.3 L ∙ m−2∙ h−1∙ bar−1 after soaking in the alkaline glycine solution. FTIR and EDX tests demonstrated that small molecular glycine can be guided into the membrane matrix by the affinity with the polar groups on the pre-set side chains, inducing the reactive swelling effect, which led to the formation of new through holes. Subsequently, the membrane with the nonporous skin layer was initially soaked in ethanol to form pores in advance, then the induced reactive swelling of pre-set graft side chains was carried out. The water flux of obtained membrane was significantly up to 96.9 L ∙ m−2∙ h−1∙ bar−1, proving that the pre-pore forming process successfully strengthened the reactive swelling-caused pore generation effect. Furthermore, based on the enhanced swelling-caused pore generation strategy, amino acids with different molecular sizes were induced to the reactive swelling effect in the amorphous regions. The mathematical fitting showed a linear correlation between the average pore size of the membrane and the molar hydration volume of amino acids, and the membrane was single pore size distribution, verifying that controllably tailored membrane pore size can be realized by the reactive swelling effect of the reactive small molecule with different molecular sizes. Compared to some membranes with single pore size distribution prepared by track etching and anodic oxidation method, the membranes prepared by this method had higher water flux. The water contact angle result clarified that the membrane surfaces and pore channels had excellent hydrophilicity. The reactive swelling did not change the crystallinity and porosity, so the mechanical strength of the membrane did not deteriorate.

The possibility of using TiO2 Nanotube Arrays‏ ‏as an adsorbent for removing lead ions ‎from aqueous solutions

This work focused on the elimination of lead ions from aqueous solutions using titanium dioxide nanotubes synthesised by anodization method as an adsorbent material using the batch system. The prepared titanium dioxide tubes(TNTs) were characterized using a scanning electron microscope device(SEM). The prepared tubes were within the nanoscale. Various conditions affected the adsorption process were studied, such as equilibrium time, temperature, acidity function and initial concentration of lead ions. It was found that the highest removal percentage occurred at the pH = 8 and that the time required for system equilibrium was 60 minutes. It was also found that the removal percentage increases with increasing temperature, which indicates the adsorption reaction as an endothermic. The Langmuir and Freundlich adsorption isotherms were also studied. The Freundlich equation was the most appropriate to the studied system. The thermodynamic studies also exhibited that the removal process was spontaneous, and the ΔS positive values ​​indicated randomness increasing.

Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-Pressure Microcooling Devices.

Silicon-based microchannel technology offers unmatched performance in the cooling of silicon pixel detectors in high-energy physics. Although Si-Si direct bonding, used for the fabrication of cooling plates, also meets the stringent requirements of this application (its high-pressure resistance of ~200 bar, in particular), its use is reported to be a challenging and expensive process. In this study, we evaluated two alternative bonding methods, aiming toward a more cost-effective fabrication process: Si-Glass-Si anodic bonding (AB) with a thin-film glass, and Au-Au thermocompression (TC). The bonding strengths of the two methods were evaluated with destructive pressure burst tests (0-690 bar) on test structures, each made of a 1 × 2 cm2 silicon die etched with a tank and an inlet channel and sealed with a plain silicon die using either the AB or TC bonding. The pressure resistance of the structures was measured to be higher for the TC-sealed samples (max. 690 bar) than for the AB samples (max. 530 bar), but less homogeneous. The failure analysis indicated that the AB structure resistance was limited by the adhesion force of the deposited layers. Nevertheless, both the TC and AB methods provided sufficient bond quality to hold the high pressure required for application in high-energy physics pixel detector cooling.

Investigation Effect of 4-Aminophenol as a Corrosion Inhibitor for Mild Steel in Sulfuric Acid Medium

A high number of organic materials have been studied as inhibitors for corrosion in different conditions. In this paper, the effect of organic chemical (4-Aminophenol) as an inhibitor for mild steel metal corrosion was investigated in presence of sulfuric acid at different temperatures. The study was carried out using three known methods in testing corrosion process, methods of weight loss, thermometric, and polarization. The obtained results showed that when the inhibitor concentration increases, the corrosion rate decreases, and hence, the inhibition efficiency increases. Moreover, when the surface coverage at a temperature of 313 °C with organic inhibitor increases, the corrosion rate decreases as noticed in the weight loss method. For the thermometer method, the inhibitor was examined by temperature. The inhibition efficiency increases, as well as in the anodic and cathodic polarization method, where it is observed that the anodic and cathodic curves are present to measure the corrosion current and corrosion potential. As the higher the concentration of the inhibitor, the lower the current and the corrosion voltage. The reason for the effectiveness of this inhibitor is the presence of amine and phenol organic molecules in its composition, which can form a film on the metal surface and prevent corrosion from taking place.

Biofunctionalisation of Polypyrrole Nanowires Array with Sulfite Oxidase Coupled with the Integration of Platinum Nanoparticles for Ultrasensitive Amperometric Detection of Sulfite

Sulfite determination in foods and alcoholic beverages is a common requirement by food and drug administration organisations in most countries. In this study, the enzyme, sulfite oxidase (SOx), is used to biofunctionalise a platinum-nanoparticle-modified polypyrrole nanowire array (PPyNWA) for the ultrasensitive amperometric detection of sulfite. A dual-step anodisation method was used to prepare the anodic aluminum oxide membrane used as a template for the initial fabrication of the PPyNWA. PtNPs were subsequently deposited on the PPyNWA by potential cycling in a platinum solution. The resulting PPyNWA-PtNP electrode was then biofuntionalised by adsorption of SOx onto the surface. The confirmation of the adsorption of SOx and the presence of PtNPs in the PPyNWA-PtNPs-SOx biosensor was verified by scanning electron microscopy and electron dispersive X-ray spectroscopy. Cyclic voltammetry and amperometric measurements were used to investigate the properties of the nanobiosensor and to optimise its use for sulfite detection. Ultrasensitive detection of sulfite with the PPyNWA-PtNPs-SOx nanobiosensor was accomplished by use of 0.3 M pyrrole, 10 U mL−1 of SOx, adsorption time of 8 h, a polymerisation period of 900 s, and an applied current density of 0.7 mA cm−2. The response time of the nanobiosensor was 2 s, and its excellent analytical performance was substantiated with a sensitivity of 57.33 μA cm−2 mM−1, a limit of detection of 12.35 nM, and a linear response range from 0.12 to 1200 μM. Application of the nanobiosensor to sulfite determination in beer and wine samples was achieved with a recovery efficiency of 97–103%.

Effect of potassium fluoride on the structure and corrosion properties of anodic coatings on Ti6Al4V alloy

In this study, KF film was obtained by anodization method on Ti6Al4V material, which ispreferred to be used in many areas such as the defense industry, biomedical field and aviation sector. Theaim of this study is to compare the corrosion resistance of untreated Ti6Al4V, TiO2 coated Ti6Al4V andKF (potassium fluoride) coated Ti6Al4V samples. XRD and SEM were used for the structuralcharacterization of the samples. Corrosion experiments were performed in simulated body fluid (SBF).According to the results, the highest corrosion resistance was obtained in the new morphological structureobtained by KF coating of the volcano-type structures.

Controlled growth of titanium dioxide nanotubes for doxorubicin loading and studies of in vitro antitumor activity.

Titanium dioxide (TiO2) materials are suitable for use as drug carriers due to their natural biocompatibility and nontoxicity. The aim of the study presented in this paper was to investigate the controlled growth of TiO2 nanotubes (TiO2 NTs) of different sizes via an anodization method, in order to delineate whether the size of NTs governs their drug loading and release profile as well as their antitumor efficiency. TiO2 NTs were tailored to sizes ranging from 25nm to 200nm according to the anodization voltage employed. The TiO2 NTs obtained by this process were characterized using scanning electron microscopy, transmission electron microscopy, and dynamic light scattering The larger TiO2 NTs exhibited greatly improved doxorubicin (DOX)-loading capacity (up to 37.5wt%), which contributed to their outstanding cell-killing ability, as evidenced by their lower half-maximal inhibitory concentration (IC50). Comparisons were carried out of cellular uptake and intracellular release rates of DOX for large and small TiO2 NTs loaded with DOX. The results showed that the larger TiO2 NTs represent a promising therapeutic carrier for drug loading and controlled release, which could improve cancer treatment outcomes. Therefore, TiO2 NTs of larger size are useful substances with drug-loading potency that may be used in a wide range of medical applications.

Electrochemical treatment of electroplating wastewater using synthesized GO/TiO2 nanotube electrode.

The graphene oxide (GO) deposited TiO2 nanotube (GO/TiO2) electrode on a titania plate was prepared using a simple anodization method. The morphological and structural properties of TiO2 and GO/TiO2 electrodes have been studied using field emission scanning electron microscopy energy dispersive spectroscopy (FESEM-EDS), X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Raman spectroscopy, Fourier transform infrared spectra (FT-IR), and X-ray photoelectron spectroscopy (XPS). FESEM-EDS analysis confirmed that the 13.56% wt of GO nanoparticles was formed over the TiO2 substrate, with the thickness of the wall to be ∼300nm. The crystallite size of GO/TiO2, i.e., 19.53nm, was confirmed by XRD analysis. Analysis of the UV-DRS spectrum showed the bandgap of the synthesized GO/TIO2 nanotube electrode to be 3.052eV. Box-Behnken design (BBD) under response surface methodology (RSM) was used to design the experiments. The effect of operating input parameters like pH, current (i), and degradation time (t) on % COD degradation (X1) and energy consumed (X2) were also examined. At optimum process parameters, the value of X1 and X2 were 57.61% and 15.00 kWh/m3, respectively. Possible intermediates were identified based on the GC-MS data analysis. Scavenger tests showed that •OH radical plays a major role in electroplating effluents degradation. Based on the results, the EO process using GO/TiO2 electrodes could be considered a promising technique for electroplating effluent degradation due to high degradation efficiency.

Polypyrrole/porous anodized aluminum oxide composite device for ammonia gas sensing

In this study, a gas sensor device was fabricated using the conducting Polypyrrole (Ppy) coated on porous anodized aluminum oxide (PAAO) which acted as substrate. The Ppy was synthesized by the chemical oxidation polymerization method. The oxidation of aluminum is carried out using anodization method technique to develop a capacitive substrate that displays large resistance. Afterwards, the substrate is subjected to polypyrrole coating to develop a sensing material for the gas sensor for ammonia detection based on impedimetric response. For gas sensing application, device was fabricated on interdigitated electrode for which prior electrical characterization was carried out via impedance spectroscopy in order to understand its gas sensing characteristics. The values obtained for the resistance and capacitance using the Z′′ spectrum are 13.36 × 106 Ω and 9.08 × 10−11 F, respectively. The ammonia concentration range in which the ammonia sensing was observed through the change in the impedance (Z) or resistance (R) extends from approximately 05 to 95 ppm. The dynamic response and recovery time of Ppy/PAAO based sensor for ammonia gas was ∼6 s which also displayed significant reproducibility with ammonia concentration when subjected to the adsorption–desorption cycles whereas sensitivity of polypyrrole based ammonia sensor was found to be ∼1.74 × 106 Ω per ppm change at 100 Hz, respectively.

An Electrochemical Sensor for the Determination of Trace Concentrations of Cadmium, Based on Spherical Glassy Carbon and Nanotubes.

The practical application of a novel, eco-friendly electrochemical sensor based on low-dimensional structures, spherical glassy carbon microparticles, and multiwall carbon nanotubes is described. This sensor, modified with a bismuth film, was used for the determination of Cd(II) by the anodic stripping voltammetric method. The instrumental and chemical factors influencing the sensitivity of the procedure were thoroughly investigated and their most favorable values were selected (acetate buffer solution pH = 3 ± 0.1; 0.15 mmol L-1 Bi(III); activation potential/time: -2 V/3 s; accumulation potential/time: -0.9 V/50 s). Under the selected conditions, the method exhibited linearity in the range of 2 × 10-9 to 2 × 10-7 mol L-1 Cd(II) with a detection limit of 6.2 × 10-10 mol L-1 Cd(II). The results obtained also showed that the application of the sensor for Cd(II) detection did not experience any significant interference in the presence of a number of foreign ions. The applicability of this procedure was evaluated using TM-25.5 Environmental Matrix Reference Material and SPS-WW1 Waste Water Certified Reference Material as well as river water samples through addition and recovery tests.

Optimization of Hydrophobic Coating Production by Pechini Method on Modified Aluminum Surface

To fabricate a hydrophobic coating using the sol-gel method (Pechini), an experimental design using the drying time and chemicals ratio as variables was developed. The coating was deposited on an aluminum substrate (AA6061-T6) treated by acid solution or anodization method. The surface wettability was measured using a goniometric instrument. Coatings were fabricated using different numbers of layers, heating rates, and drying temperatures, and their morphologies were observed using visual analysis and scanning electron microscopy. The use of anodization treatment with a furnace ramp of 1 °C min-1, a drying temperature of 220 °C ± 10 °C, and single-layer application, produced a coating free of visible flaws and apparent damage. The coating was obtained with a 15:1 glycerin:citric acid ratio and sample pre-polymerization in the drying oven for 1 hour at 100 °C resulted in the highest contact angle, 62° ± 2°, which meets the ASTM D-7334-08 standard for a hydrophobic surface.

Hydrophobic-oleophilic surfaces based on chemical modification of nanoporous alumina

Hydrophobic/oleophilic nanoporous anodic alumina substrates were fabricated by two-step anodization method following of chemical modification with 1H, 1H, 2H, 2H-perfluorooctyltrichlorosilane (FOTS). Surface morphology was characterized using a scanning electron microscopy. The influence of the topography and the pore size of the surface in the contact angle measurements with different solvents have been studied. The water repellence capacity of the nanoporous anodic alumina structure as fabricated depends on pore diameter but, there is a critical value of pore size beyond which the water contact angle decrease. After chemical modification of the surface, this effect is not observed. The porous topography of the material is not an advantage for the oleophibicity. The CA values for the non-porous surface using different solvents are lower than the structured surface.The results obtained in this study can be used to desire wettability properties. Modified NAA exhibit hydrophobicity and at the same time permeability for solvents with low surface tension.

CuxO@Cu mesh electrode with {1 1 1} facet for efficient photo-electro-Fenton reaction and low voltage robustness

In this work, CuxO nanoarrays containing Cu2O and CuO with different morphologies were synthesized on the surface of copper mesh by anodic oxidation method, and the prepared CuxO@Cu mesh electrodes were confirmed by X-ray diffraction (XRD), field emission scanning microscope (SEM), and X-ray photoelectron spectroscopy (XPS). Cyclic voltammetry (CV) and photocurrent were used to characterize the composite electrode. The photo-electro-Fenton (PEF) catalytic system constructed with the prepared CuxO@Cu electrode anode has excellent H2O2 utilization efficiency and pollutant degradation rate. Degradation efficiency of methylene blue (MB) by electro-Fenton (EF), photo-Fenton (PF) and photo-electro-Fenton (PEF) processes were investigated, which was in order: PEF > PF > EF. The effects of applied voltage, current density, pH and H2O2 concentration on MB degradation were investigated. MB could be quickly degraded at CuxO@Cu electrode during heterogeneous photo-electro-Fenton process with a first-order kinetic constant of 3.61 h−1 under 300 W simulated sunlight irradiation at 0.6 V, pH 7.0, 4.9 mmol H2O2. The CuxO@Cu electrode anode was stable and could be reused without catalytic reduction, and also had good degradation efficiency on other organic compounds (p-nitrophenol, tetracycline, norfloxacin), having potential application value in wastewater treatment.

Highly sensitive and selective fluorescence sensor based on zirconia nanotube array films for Cu2+ detection

ZrO2 nanotube array films (ZNA) were prepared by anodisation method, and ZNA was modified with γ-aminopropyltriethoxysilane (APTES) to prepare amino-functionalized ZNA (ZNA-NH2). Through immobilizing Cu2+ ions and RB on ZNA and ZNA-NH2, the detection of Cu2+ ions could be realized by measuring the change of fluorescence intensity of RB, and the effects of APTES and RB concentrations on the detection performances were studied. The results show that the fluorescence detection performances of ZNA-NH2 carrier are significantly better than those of ZNA. The best detection performances for Cu2+ ions are achieved with the RB concentration of 10 mg/L and the APTES concentration of 0.4 M. The minimum detection limit is 0.68 nM (S/N = 3), and the linear range is from 1 × 10−3 to 3 × 102 μM under the optimal experimental conditions. The carriers can be regenerated and reused after being soaked in acetic acid solution. This work can be applied to the detection of Cu2+ ions in real seawater.