Titanium Graphene Oxide Research Articles

Performance of Graphene Oxide–Titanium Dioxide, Polyethersulphone Membranes for Industrial Wastewater Treatment

Performance of Graphene Oxide–Titanium Dioxide, Polyethersulphone Membranes for Industrial Wastewater Treatment

Graphene oxide-titanium oxide-polyaniline hybrid materials for high-performance dye-sensitized solar cells

A new solar cell that comprises a graphene oxide and titanium oxide nanoparticle (NP) composite with graphitized polyaniline (PANI) has been tested in polymer solar cells (PSCs). In this study, a series of conjugated polymers were synthesized and evaluated as the absorber and hole-transport layer materials in organic solar cells, demonstrating the significant impact of the chemical structure of the polymers on solar cell performance. The incorporation of graphene oxide (GOX) and titanium oxide TiO2 NP in conjugated polymers, particularly when graphitized within the PANI layer, led to improved open-circuit voltages compared to structurally similar polymers without NP. The morphology of the composite films was analyzed and related to the photovoltaic performance of polymers synthesized with polyaniline PANI-base and PANI-salt. Optimal NP addition in PANI-salt, PANI-base, PANI-base-TiO2, and PANI-base-GOX resulted in open-circuit voltages and efficiencies of 433 mV and 3.67%, 250 mV and 0.595%, 310 mV and 1.358%, and 520 mV and 2.366%, respectively. This study underscores the importance of polymer film uniformity in the performance of PSCs, with the highest efficiency obtained using a conjugated polymer with the best PANI-salt and PANI-base-GOX films. The research sheds light on the relationship between polymer structure and device photovoltaic performance, which is crucial for the design of new polymeric materials for efficient use and stable OSCs and PSCs.

Experimental and theoretical study of improved mesoporous titanium dioxide perovskite solar cell: The impact of modification with graphene oxide

The present study serves experimental and theoretical analyses in developing a hybrid advanced structure as a photolysis, which is based on electrospun Graphene Oxide-titanium dioxide (GO-TiO2) nanofibers as an electron transfer material (ETMs) functionalized for perovskite solar cell (PVSCs) with GO. The prepared ETMs were utilized for the synthesis of mixed-cation (FAPbI3)0.8(MAPbBr3)0.2. The effect of GO on TiO2 and their chemical structure, electronic and morphological characteristic were investigated and discussed. The elaborated device, namely ITO/Bl-TiO2/3 wt% GO-TiO2/(FAPbI3)0.8(MAPbBr3)0.2/spiro-MeTAD/Pt, displayed 20.14% disposition and conversion solar energy with fill factor (FF) of 1.176%, short circuit current density (Jsc) of 20.56 mA/cm2 and open circuit voltage (VOC) 0.912 V. The obtained efficiency is higher than titanium oxide (18.42%) and other prepared GO-TiO2 composite nanofibers based ETMs. The developed materials and device would facilitate elaboration of advanced functional materials and devices for energy storage applications.

Multifunctional capabilities of radio frequency sputtered GO-TiO2 nanocomposite ultra-thin films

The work presents the successful synthesis of ultra-thin Graphene Oxide-Titanium (GOT) nanocomposite films using radio frequency sputtering. It was employed a thorough characterization encompassing structural, optical, and morphological aspects, with a focus on practical applications such as photocatalysis, anti-corrosion, anti-reflective properties, and superhydrophobicity (PAAS). Notably, the GOT film exhibited outstanding photocatalytic efficiency, achieving a significant 96% photodegradation rate, and offering promise for environmental remediation. Additionally, it demonstrated excellent visible-light-induced photocatalytic disinfection against E. coli K12 contamination. Furthermore, the film displayed notable corrosion resistance, a fivefold improvement over pristine surfaces, and excellent anti-reflective properties with 98% transmittance in the visible light range, making it suitable for advanced optical devices with multifunctional benefits.

Bench-scale photoelectrocatalytic reactor utilizing rGO-TiO2 photoanodes for the degradation of contaminants of emerging concern in water

Pharmaceuticals and personal care products are contaminants of emerging concern (CEC) in water. Photocatalysis (PC) and photoelectrocatalysis (PEC) are potential advanced oxidation processes for the effective degradation of these contaminants. In this work a bench-scale photoelectrocatalytic reactor utilizing a UVA-LED array was designed and tested for the degradation of diclofenac as a model CEC. Reduced graphene oxide-titanium dioxide (rGO-TiO2) composite, prepared by the photocatalytic reduction of rGO on TiO2, was immobilised on fluorine doped tin oxide (FTO) glass and evaluated as a photoanode. The influence of UVA intensity and rGO:TiO2 ratio on the degradation rate was studied. Surface modification of the TiO2 with 1% rGO gave the highest photocurrent and best degradation rate of diclofenac, as compared to unmodified TiO2. However, following repeat cycles of photoelectrocatalytic treatment there was an observed drop in the photocurrent with rGO-TiO2 anodes and the rate of diclofenac degradation decreased. Raman and XPS analysis indicated the re-oxidation of the rGO. Attempts to regenerate the rGO in-situ by electrochemical reduction did not prove successful, suggesting that the site of photoelectrocatalytic oxidation of rGO was different to the reduction site targeted in the photocatalytic reduction for the formation of the rGO-TiO2 composites.

Reduced graphene oxide-TiO2/sodium alginate/polyacrylamide composite hydrogel for enhanced adsorption-photocatalytic degradation of methylene blue

The discharge of dye wastewater from various industries has emerged as a critical environmental concern, necessitating the implementation of effective methods such as photocatalytic technology to mitigate organic dyes in water. Nevertheless, the poor photocatalytic activityability and low reusability of most semiconductor photocatalysts have hindered their large-scale practical application. In this paper, the reduced graphene oxide-titanium dioxide composite (rGO-TiO2) was prepared via a hydrothermal method and subsequently immobilized onto a three-dimensional structure composed of sodium alginate (SA) and polyacrylamide (PAM) through sunlight-induced polymerization and ionic cross-linking techniques, resulting in the fabrication of a novel photocatalytic composite hydrogel (rGO-TiO2/SA/PAM). The composite hydrogel was found to exhibit good photocatalytic degradation efficiency for methylene blue(MB), achieving complete removal of MB under UV light irradiation for 100 min at pH 7 when using a rGO:TiO2 ratio of 3 wt%. Additionally, the synthesis of rGO-TiO2/SA/PAM effectively harnesses solar resources through simple synthetic steps, enabling easy recovery and separation from dye wastewater (with a recovery rate of approximately after first use). In contrast, nano-TiO2 and rGO-TiO2 exhibit lower recovery rates (∼80%). Furthermore the material demonstrates enhanced selective adsorption-photocatalytic degradation of MB in acid-base dye mixtures under UV light irradiation.

A novel electrochemical ion imprinting sensor modified with carbon nanocomposites and its high selectivity for cadmium ion detection in real samples

AbstractDue to their high toxicity, potential for bioaccumulation and carcinogenicity, heavy metal pollutants have harmed the environment. Cadmium is a dangerous heavy metal that can accumulate easily in the human body. Long‐term exposure to cadmium‐contaminated environments can result in numerous diseases. A novel electrochemical sensor based on multi‐walled carbon nanotubes (MWCNTs)–imprinted polymer and reduced graphene oxide–titanium oxide (rGO@TiO2) is reported which was used to detect cadmium ions in actual samples in a highly sensitive and precise method. By using the surface imprinting technique to adhere the imprinted polymer to the surface of the MWCNTs, the template removal rate and cavity utilization rate are increased. At the same time, the electron transfer rate is increased by the MWCNTs’ superior electrochemical performance and higher conductivity. Transmission electron microscopy was used to characterize the composite's morphology. Cyclic voltammetry, differential pulse voltammetry and electrochemical impedance spectroscopy were used to describe the imprinted polymer's electrochemical behavior. The findings demonstrate the sensor's excellent cadmium ion selectivity. Under ideal experimental conditions, the electrochemical sensor has a good linear relationship in the range of 10−9 to 10−6 mol L−1, and the detection limit is 1.12 × 10−9 mol L−1. The novel sensor offers outstanding repeatability and stability in addition to good selectivity and sensitivity. Eventually, real samples were successfully used to apply the electrochemical sensor for the detection of trace Cd(II) (river water, tap water and rice). © 2023 Society of Industrial Chemistry.

Synthesis of a powerful single copper/tungsten atom oxide photocatalyst dispersed on the surface of a reduced graphene oxide-titanium composite for H2 production and pollutant degradation

The specific activity and selectivity of many catalytic processes have been frequently enhanced, making single-atom catalysis a new frontline in the area of catalysis. In this study, a powerful photocatalyst was synthesized for H2 production and ofloxacin (OFL) degradation, utilizing a catalytically active TiO2-reduced graphene oxide (rGO) support material. A Cu mono-substituted heteropoly acid(HPA) was used to generate surface-dispersed single copper/tungsten atom oxide (SCu/WAO) sites as co-catalysts. Many single atoms were homogeneously deposited on the TiO2-rGO catalyst. A TiO2-SCu/WAO-rGO catalyst was successfully prepared, and the presence of the SCu/WAO species was confirmed using high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), extended X-ray absorption fine structure (EXAFS), and X-ray absorption near edge structure (XANES) analyses. The prepared photocatalyst was found to facilitate high rates of H2 production (14.32 mmol/g/h) and a high maximum OFL degradation (98.4%). Additionally, it could effectively substitute current noble metal catalysts as an extremely effective and long-lasting solar radiation-based photocatalyst for renewable H2production and OFL degradation.

An Advanced Quaternary Composite for Efficient Water Splitting

Electrochemical water splitting is a promising pathway for effective hydrogen (H2) evolution in energy conversion and storage, with electrocatalysis playing a key role. Developing efficient, cost-effective and stable catalysts or electrocatalysts is critical for hydrogen evolution from water splitting. Herein, we evaluated a graphene-modified nanoparticle catalyst for hydrogen evolution reaction (HER). The electrocatalytic H2 production rate of reduced graphene oxide-titanium oxide-nickel oxide-zinc oxide (rGO–TiO2–NiO–ZnO) is high and exceeds that obtained on components alone. This improvement is due to the presence of rGO as an electron collector and transporter. Moreover, a current density of 10 mA/cm2 was recorded at a reduced working potential of 365 mV for the nanocomposite. The electronic coupling effect between the nanoparticle components at the interface causes the nanoparticle's hydrogen evolution reaction catalytic activity.Graphical

Laccase modified GO/TiS2 nanocomposite based amperometric biosensor for (-)-epicatechin detection

In this study, 2-dimensional graphene oxide-titanium disulfide (GO/TiS2) nanolayers were synthesized, and the surface and size properties of nanolayers were investigated by transmission electron microscopy (TEM) technique. The nanolayers were used to modify the screen-printed electrode surface and applied as a micro-medium for Trametes versicolor laccase. The ability of this enzyme biosensor to detect the (-)-epicatechin has been demonstrated with a wide linear range (0.1–250 µM), LOD (0.073 µM), and sensitivity (0.3264 µAµM−cm−2). In addition, the biosensor exhibited excellent selectivity allowing selective detection of (-)-epicatechin in the presence of other polyphenolic compounds and high reducing currents sensitivity (vs Ag/AgCl) examined at −0.6 V. The proposed biosensor showed reproducibility, reusability, long-term storage stability, and applicability in actual food samples with recovery values close to 100 %. Also, Kmapp and Imax values ​​of the biosensor were determined as 2.245 µM and 0.757 µA, respectively.

Facile Green Preparation of Reduced Graphene Oxide Using Citrus Limetta-Decorated rGO/TiO2 Nanostructures for Glucose Sensing

The important electrochemical measurements of reduced graphene oxide-titanium oxide (rGO)/TiO2) electrodes for the application of a glucose sensor are reported in the proposed work. Investigating the sensitivity, stability, and reproducibility of sensor electrodes that were made and used to evaluate the concentration of glucose in the serum is one of the novel aspects of this work. This study presents the use of citrus limetta (sweet lime) fruit peel waste to synthesize a green reduction of graphene oxide (rGO). The rGO/TiO2 composite obtained using the microwave heating method is applied for measuring the structural and morphological properties by various means. A conducting fluorine-tin oxide substrate is used to modify the enzymeless glucose sensor electrode. The electrochemical measurements of rGO/TiO2 sensor electrodes are carried out using the technique of cyclic voltammetry. The rGO/TiO2 sensor electrode exhibits a high sensitivity of 1425 µA/mM cm2 towards glucose concentration in the range of 0.1 to 12 mM. The sensor was found to be extremely stable and repeatable with a response time of 5 s along with a minimum detection limit of 0.32 μM of glucose. The rGO/TiO2 sensor shows relative standard deviation (RSD) of 1.14%, 1.34%, and 1.3% which reveals its excellent stability, repeatability, and reproducibility respectively. The sensor was used for glucose level detection in natural blood serum and shows an RSD of 1.88%. which is in good agreement with the commercial glucose sensor values.

A unique engineering building of nanoelectrodes based on titanium and metal oxides nanoparticles captured on graphene oxide surface for supercapacitors and energy storage

The goal of the current research is to create a unique nano-combination by decorating metal oxide nanoparticles (NPs) for building novel nanoelectrodes to increase the supercapacitor efficiency of graphene oxide-titanium dioxide (GO@TiO2) nanocomposite (NCP). The nanocomposites are made using the sol/gel process, and several features are measured, including UV-Vis spectroscopy, scanning electron microscopy, Zeta potential, and x-ray diffraction. The potentiostat device measures the electrochemical performances as well as the optical activities through the transfer of charges and electrons that are detected using various approaches. Impedance spectroscopy (EIS) data are used to study the supercapacitors of the manufactured unique NCP that embellish the graphene oxide (GO) surface and validate the development of the electron transport and surface structure that make it a promising candidate for supercapacitors applications. the charge transfer resistance was calculated at 117.5, 94.36, 282.5, 54.6, 34.17, and 84.35 kΩ.cm2 for GO@TiO2, GO@TiO2. Co3O4, GO@TiO2. MgO, GO@TiO2. SiO2, GO@TiO2. V4O7, and GO@TiO2. MoS2, respectively. The NCPs capacitance values were displayed as related to CPE (C= 9.404 nF/cm2), GO@TiO2 (C= 42.78 nF/cm2), GO@TiO2. Co3O4 (C= 23.61 nF/cm2), GO@TiO2. MgO (C= 45.5 nF/cm2), GO@ TiO2. SiO2 (C= 18.41 nF/cm2), GO@TiO2. V4O7 (C= 18.62 nF/cm2), and GO@TiO2. MoS2 (C= 52.82 nF/cm2). According to the findings, the manufactured NCPS electrodes are a good option for use in producing supercapacitors as well as other applications including solar cells and water treatment.

Retracted: A Facile Synthesis and Properties of Graphene Oxide-Titanium Dioxide-Iron Oxide as Fenton Catalyst

Retracted: A Facile Synthesis and Properties of Graphene Oxide-Titanium Dioxide-Iron Oxide as Fenton Catalyst

Checking the Efficiency of a Magnetic Graphene Oxide–Titania Material for Catalytic and Photocatalytic Ozonation Reactions in Water

An easily recoverable photo-catalyst in solid form has been synthesized and applied in catalytic ozonation in the presence of primidone. Maghemite, graphene oxide and titania (FeGOTi) constituted the solid. Additionally, titania (TiO2) and graphene oxide–titania (GOTi) catalysts were also tested for comparative reasons. The main characteristics of FeGOTi were 144 m2/g of surface area; a 1.29 Raman D and G band intensity ratio; a 26-emu g−1 magnetic moment; maghemite, anatase and brookite main crystalline forms; and a 1.83 eV band gap so the catalyst can absorb up to the visible red region (677 nm). Single ozonation, photolysis, photolytic ozonation (PhOz), catalytic ozonation (CatOz) and photocatalytic ozonation (PhCatOz) were applied to remove primidone. In the presence of ozone, the complete removal of primidone was experienced in less than 15 min. In terms of mineralization, the best catalyst was GOTi in the PhCatOz processes (100% mineralization in 2 h). Meanwhile, the FeGOTi catalyst was the most efficient in CatOz. FeGOTi led, in all cases, to the highest formation of HO radicals and the lowest ozone demand. The reuse of the FeGOTi catalyst led to some loss of mineralization efficacy after four runs, likely due to C deposition, the small lixiviation of graphene oxide and Fe oxidation.

A novel synthesis of graphene oxide-titanium dioxide (GO-TiO2) and graphene oxide-zinc oxide (GO-ZnO) nanocomposites and their application as effective, reusable photocatalysts for degradation of methylene blue (MB) dye

Abstract The current study focuses on graphene oxide (GO) and its composite with zinc oxide and titanium dioxide nanoparticles to develop a simple nano chemistry-based clean and efficient process for the effective degradation of methylene blue (MB) dye. Graphene oxide composite with zinc oxide and titanium dioxide nanoparticles were fabricated via a thermal coupling process that demonstrates exclusive physiochemical properties. A detailed comparison of the structure, morphology, and surface analysis of synthesized GO and nanocomposites, as well as their electrochemical properties, has been accomplished. By using the degradation of methylene blue (MB) dye the photocatalytic function of nanocomposites was studied. Results reveal that the rate constants of GO, GO-TiO2, and GO-ZnO photocatalysts are 1.06 × 10−3 min−1, 2.56 × 10−3 min−1, and 1.63 × 10−3 min−1 respectively which discloses GO-TiO2 nanocomposite shows maximum degradation of MB dye among both catalysts. The reuse of photocatalyst even after five cycles retained the degradation efficiency of 80, 77, and 49% respectively for GO-TiO2, GO-ZnO, and GO when tested against MB. Hence, as a result, it was determined that these photocatalysts are ideal for the remediation of dye-contaminated wastewater.

Exploring engineering reduced graphene oxide-titanium dioxide (RGO-TiO2) nanoparticles treatment to effectively enhance lutein biosynthesis with Chlorella sorokiniana F31 under different light intensity

The Chlorella sorokiniana F31 is a promising lutein producer with high lutein content. Herein, different graphene/TiO2 nanoparticles (NPs) were designed and synthesized by hydrothermal method. Through the UV–vis diffuse reflectance spectra (DRS) analysis, the results showed that RGO-TiO2 NPs can effectively expand visible light absorption compared with TiO2 NPs. Subsequently, the effects of these NPs on light utilization and lutein accumulation of C. sorokiniana F31 were investigated, and the RGO-TiO2 NPs treatment exhibited the higher lutein production and content than that of TiO2 and control group. As the optimal RGO-TiO2 (0.5 wt%) NPs concentration of 50 mg/L and light intensity of 211 μmol/m2/s, the supreme lutein content (15.55 mg/g), production (77.2 mg/L) and productivity (12.87 mg/L/d) were achieved. The performances are higher than most of reported values in previous study, indicated that RGO-TiO2 (0.5 wt%) NPs treatment is a promised strategy to enhance microalgal growth and lutein accumulation.

Mesoporous complexion and multi-channeled charge storage action of PIn-rGO-TiO2 ternary hybrid materials for supercapacitor applications

Polymeric hybrid materials of polyindole-reduced graphene oxide-titanium dioxide (PIn-rGO-TiO2) have been synthesized via chemical oxidative in-situ polymerization technique. Inclusion of rGO in polymeric matrix enhances the level of porosity and electrical conductivity of the resultant composite. The presence of TiO2 increases overall redox activity and charge storing capability of the hybrid polymeric materials. As a result, the composite materials possess revamped electrochemical out-turn. PIn-rGO-TiO2 comprising of 10% TiO2 (PGT10) exhibites exorbitant specific capacitance of 482.9 F g−1 with capacitance retention of 114% at current densities of 1 A g−1 and 10 A g−1, respectively. The marked cyclic performance of PGT10 is attributed to the 2D supporting network of rGO for deposition of the polymer which precludes dissociation of the fragile polymeric backbone during uninterrupted cycling process. Nonetheless, the PGT10 composite electrode shows insignificant solution resistance (Rs) and charge transfer resistance (Rct) representing its pompous charge transporting properties. These characteristics show that PGT10 could be one of the most competent candidates to be used as electrode material for high-performance supercapacitor applications.

A Facile Synthesis and Properties of Graphene Oxide-Titanium Dioxide-Iron Oxide as Fenton Catalyst

Textile industries discharge wastewater in huge amount that contains several toxic contaminants, especially organic dyes. Organic dyes present in wastewater have many adverse effects on environment as well as on living organisms including human beings. The generation of a nanocomposite to trap the toxic organic dyes from wastewater is highly recommended. Herein, we report the preparation of graphene-iron-titanium oxide (GFT) nanocomposite using simple, practical, and cost-effective protocol. The prepared tri-nanocomposite was successfully recognized by employing several analytical techniques. Morphology of the prepared nanocomposites was assessed by SEM coupled with EDS (energy dispersive spectroscopy). HRTEM was used to measure the size of the nanocomposites with shape and morphology. The UV-visible absorption spectra of the nanocomposites were recorded by a UV-visible spectrophotometer. Finally, the crystal structures of the nanocomposites were confirmed by XRD. Moreover, we proposed a plausible mechanism to demonstrate the catalytic activity of GFT oxide nanocomposite for the degradation auramine (AM) dye via a heterogeneous Fenton process.

New insight into PFOS transformation pathways and the associated competitive inhibition with other perfluoroalkyl acids via photoelectrochemical processes using GOTiO2 film photoelectrodes

The global distribution and environmental persistence of perfluoroalkyl acids (PFAAs) has been considered a critical environmental concern. In this work, we successfully fabricated a graphene oxide-titanium dioxide (GOTiO2) photoelectrode for perfluorooctane sulfonate (PFOS) degradation in a photoelectrochemical (PEC) system. The results reveal that a 5 wt.% GOTiO2 anode possesses the optimal PEC performance, with a band gap (Eg) of 2.42 eV, specific surface area (SBET) of 72.6 m2 g−1 and specific capacitance (Cs) of 4.63 mF cm−2. In the PEC system, PFOS can be efficiently removed within 4 h of reaction time, with a pseudo-first-order rate constant of 0.0124 min−1, under the optimized conditions of current density = 20 mA cm−2, electrode distance = 5 mm, solution pH = 5.64, [PFOS]0= 0.5 µM and NaClO4 electrolyte concentration = 50 mM. The electron transfer pathway, hydroxyl radicals and superoxide radicals are all responsible for PFOS decomposition/transformation. New degradation pathways were identified; a total of 25 PFOS byproducts are reported in this work; and perfluoroalkane sulfonates (PFSAs), perfluorinated aldehydes (PFALs) and hydrofluorocarbons (HFCs) were identified for the first time. PFOS degradation involves the desulfonation pathway as the first step, followed by oxidation and subsequent defluorination, decarboxylation, decarbonylation, sulfonation, defluorination and hydroxylation. The results from this work also show that the reactivity of PFAAs is related to their carbon chain length, with shorter-chain PFAAs exhibiting a lower degradation rate. In a PFAA mixture, a decline in the degradation rate was observed for the shorter-chain-length PFAAs, suggesting stronger competitive inhibition and indicating stronger environmental recalcitrance during the treatment process.Novelty statement: Although many efforts have been made to identify perfluorooctane sulfonate (PFOS) degradation byproducts, previous studies were only able to identify byproducts that are related to perfluorinated carboxylic acids (PFCAs). This is the first study to elucidate the new PFOS degradation pathway; furthermore, this is the first report to identify byproducts containing sulfonate groups (perfluoroalkane sulfonates, PFSAs), aldehyde groups (perfluorinated aldehydes, PFALs), and hydrofluorocarbons (HFCs). This study further systematically explores how perfluoroalkyl acid (PFAA) degradation may be affected in the mixture system: shorter-chain-length PFAAs suffer stronger competitive inhibition in the photoelectrochemical (PEC) system. By utilizing the graphene oxide-titanium dioxide (GOTiO2) photoelectrode fabricated in this work, PFOS can be successfully decomposed during the PEC process for the first time.

Efficient removal of Cu(II) with graphene oxide-titanium dioxide/sodium alginate composite beads: Preparation, characterization, and adsorption mechanism

Graphene oxide-titanium dioxide/sodium alginate (GO-TiO2/SA) composite beads are successfully prepared based on blending and cross-linking process, performing as adsorbent to remove Cu(II) in aqueous solution. Meanwhile, the cross-linking mechanism are explored and the morphology of the GO-TiO2/SA composite beads are characterized via FTIR, SEM, EDS, Raman and XPS. These results reveal that the porous network is created, corresponding to form hydrogen bonds, COTi among TiO2, GO and SA, as well as the cross-linking between carboxyl and Ca2+. In comparison with GO/SA composite beads, GO-TiO2/SA composite beads are endowed with a more integral porous structure and a larger specific surface area, observing from the characterizations of BET and SEM, confirming that better adsorption performance is achieved. Furthermore, the adsorption experiments of Cu(II) are carried out in terms of varying the dosage of the composite beads, temperature, pH and adsorption time. And the adsorption behavior can be better described by the pseudo-second-order kinetic model and Langmuir model. Importantly, GO-TiO2/SA composite beads maintain the undamaged structure and larger pore sizes when undergoing adsorption-desorption for two cycles. Finally, the adsorption mechanism on Cu(II) with GO-TiO2/SA composite beads is also explored via FTIR, EDS and XPS.