BMC Oral Health
·
2024
·Vol. 24
·期 1
·1-17
·
IF 2.6
Li Yaoyao,Huang Xinhui,Fu Weihao,Zhang Zonghao,Xiao Kuancheng,Lv Hongbing
Reduced graphene oxide (rGO) is an graphene oxide (GO) derivative of graphene, which has a large specific surface area and exhibited satisfactory physicochemical characteristics. In this experiment, GO was reduced by PDA to generate PDA-GO complex, and then PDA-GO was combined with Chitosan (CS) to synthesize PDA-GO/CS composite scaffold. PDA-GO was added to CS to improve the degradation rate of CS, and it was hoped that PDA-GO/CS composite scaffolds could be used in bone tissue engineering. Physicochemical and antimicrobial properties of the different composite scaffolds were examined to find the optimal mass fraction. Besides, we examined the scaffold’s biocompatibility by Phalloidin staining and Live and Dead fluorescent staining. Finally, we applied ALP staining, RT-qPCR, and Alizarin red S staining to detect the effect of PDA-GO/CS on the osteogenic differentiation of human dental pulp stem cells (hDPSCs). The results showed that PDA-GO composite was successfully prepared and PDA-GO/CS composite scaffold was synthesized by combining PDA-GO with CS. Among them, 0.3%PDA-GO/CS scaffolds improves the antibacterial activity and hydrophilicity of CS, while reducing the degradation rate. In vitro, PDA-GO/CS has superior biocompatibility and enhances the early proliferation, migration and osteogenic differentiation of hDPSCs. In conclusion, PDA-GO/CS is a new scaffold materialsuitable for cell culture and has promising application prospect as scaffold for bone tissue engineering.
研究领域:
生物材料学
·
组织工程学
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Xiaoyue Fan,Xiaolin Qiu,Lixin Lu,Binglin Zhou
Due to the low direct thermal effect of solar irradiation , conventional phase-change microcapsules have poor solar energy utilization capability. To increase the solar-to-thermal energy storage efficiency, in this work, we reported a light-driven microencapsulated n-eicosane based on a crystalline TiO 2 shell coated by graphene oxide (GO)-based copper monosulfide (CuS) (CuS-GO) nanoconverter. Due to the combination of local surface plasma resonance (LSPR), semiconductor and synergetic effects, the CuS-GO nanoconverter conferred full-spectrum solar light-to-thermal conversion capability on the microcapsule system. The resultant n-eicosane@TiO 2 @CuS-GO microcapsules achieved high full-spectrum solar-to-thermal storage efficiency (97.1%) under stimulated solar light with no compromise of the latent heat density (212.0 ± 1.2 J/g). Furthermore, the thermal conductivity of n-eicosane@TiO 2 @CuS-GO (0.985 ± 0.004 W/(m·K)) significantly increased by 39.9% compared with that of n-eicosane@TiO 2 . These results indicate that this light-driven microcapsule with superior properties is advantageous for direct solar-to-thermal energy utilization applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Xunke Zhao,Kaihuan Nie,Fuyi Sun,Cheng Xie,Yanran Cheng,Yuanyuan Che
Nanofiltration holds promise for treating dyeing and printing wastewater on account of its key merits: low consumption, easy manipulation, and absence of secondary contamination. In this study, the fabrication of a uniform permselective ZIF-8@GO composite membrane in the alumina ceramic tube by the continuous flow combined with in situ self-assembly way was investigated. Subsequently, the properties of ZIF-8@GO membrane were examined in relation to reaction time, reaction temperature, flow rate, and GO concentration. Furthermore, the durability of the membrane was tested. It was observed that under optimal conditions, the rejection rate and permeation flux of methyl blue solutions remained essentially constant during 24 hours of continuous operation, with values of 98.39% and 38.27 L/(m 2 ·h·bar), respectively. This work aims to simplify and smoothly implement the industrialized production of MOF-based composite membranes and offers a potential solution for the low-cost and efficient treatment of organic dye wastewater in the printing and dyeing industry.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xinyan Li,Teng Wang,Guilan Zhang,Xin Wen,Xinchuan Ma,Gang Xie,Lan Ma,Liyun Zhang
Developing an anti-fouling and multifunctional membrane with efficient separation performance is great potential for alleviating water crisis. Here, combining the heterogeneous β-FeOOH/Ag catalyst layer, intercepted GO nanosheets layer, and porous polyvinylidene fluoride (PVDF) substrate, a multi-layer composite membrane (β-FeOOH@GO/AgNWs) was designed and fabricated by the polyphenol (TA)-metal (Fe 3 + ) crosslinking and inductive effect. Hence, the β-FeOOH@GO/AgNWs membrane possesses robust physical and chemical stability, superhydrophilicity (water contact angle ∼0°) and underwater superoleophobicity (underwater oil contact angle >150°). Due to the construction of heterojunctions of β-FeOOH/Ag, the β-FeOOH@GO/AgNWs membrane achieved the degradation of various dyes under the photo-Fenton system, the degradation rate constant is 0.0986 min −1 . Meanwhile, the synergistic effect of multi-layer structure can efficiently intercept the various soluble dyes by electrostatic effect, π-π action and layered channels, the reject rate recached above 97.89 % under the acidic and neutral environment. Faced the membrane fouling phenomenon during the separation process, the flux and rejection of fouled membrane recovered to above 95.1 % and 97.9 % after photo-Fenton cleaning for 10 min. Moreover, the β-FeOOH@GO/AgNWs membrane also realized efficient separation performance for various oil-in-water emulsions, the flux reached 329.2 ± 25–486.1 ± 15 L m −2 h −1 bar −1 , the corresponding separation efficient was above 99 %. Similarly, the photo-Fenton cleaning strategy also regenerated the fouled composite membrane, the flux recovery rate was above 95 %. Therefore, we think that β-FeOOH@GO/AgNWs membrane can bring a new thinking of developing the multifunctional membrane to achieve complex wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Haoye Wang,Aijuan Xie,Shuji Li,Jiajun Wang,Kaixuan Chen,Zilong Su,Ningning Song,Shiping Luo
A three-dimensional g-C 3 N 4 /MWNTs/GO hybrid modified electrode was constructed as an electrochemical sensor for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). Due to the high conductivity of MWCNTs and the strong synergy between g-C 3 N 4 and GO , the combination of the three effectively improved the electrocatalytic activity of the modified electrode for the oxidation of AA, DA, and UA, and solved the problems such as overlapping anodic peaks. The electrochemical performance of the as-constructed sensor was investigated and optimized by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The linear response range of AA, DA, and UA in the optimal condition was 0.2–7.5 mM, 2–100 μM, and 4–200 μM, respectively. The detection limits (S/N = 3) of AA, DA, and UA were 96, 0.22, and 1.36 μM, respectively. The recoveries of AA, DA and UA in serum samples from three groups were 92.82–106.50%, and the relative standard deviations were less than 2%. The results show that the as-constructed g-C 3 N 4 /MWNTs/GO modified electrode has the advantages of simplicity, high sensitivity and good selectivity , and can simultaneously determine AA, DA, and UA.
研究领域:
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
·
IF 4.1
Lin He,Jiabin Zhou,Dan Liu,Yajie Wen,Yuxin Gan
The combination of photocatalysis and Fenton oxidation technology is an efficient strategy to improve the efficiency of oxytetracycline hydrochloride (OTC-HCl) degradation. Herein, a Fe 3 O 4 @GO@MIL-101 composite catalyst bridged with graphene oxide (GO) was obtained by a two-stage hydrothermal method . The introduced graphene oxide layer could inhibit the recombination of electron hole (e − - h + ) pairs by attracting photo-generated electrons from MIL-101 and transferring them to Fe 3 O 4 , observably enhancing the photocatalytic performance of the composite Fe 3 O 4 /MOFs. Under the optimal conditions (initial pH, 10 mmol H 2 O 2 , 0.01 g/L catalyst), the Fe 3 O 4 @GO@MIL-101 + H 2 O 2 +Vis system could achieve a degradation effect of 97.26 % on 70 mg/L OTC-HCl within 50 min Fe 3 O 4 @GO@MIL-101 nanocomposites exhibited good recyclability , were easy to recover after multiple uses, and maintained excellent removal efficiency for pollutants. A series of data demonstrated that in Fe 3 O 4 @GO@MIL-101 + H 2 O 2 +Vis system, the primary active substances involved in OTC-HCl degradation were holes and superoxide radicals , while the contributions of hydroxyl radicals and photo generated electrons were relatively weak. Finally, based on various characterization results and catalyst activity performance, a feasible mechanism for the removal of OTC-HCl by Fenton-like system was proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS TECHNOLOGY
·
2020
·
IF 1.738
Yusong Pan,Minyuan Yin,Hongjun Fang,Linfeng Xu,Haixian Yan,Chengling Pan
A novel ternary ZnO/CdS/GO heterostructure with boosting photocatalytic performance and stability was prepared by a simple hydrothermal method. The morphology, crystal structure, chemical composition and optical properties of the composite were thoroughly investigated. Results show that the obtained ZnO/2CdS/10GO composite exhibits the optimal activity towards RhB removal under sunlight irradiation, which is higher than that of pristine ZnO and CdS. The enhanced photocatalytic performance of the composite is attributed to the close heterostructure and excellent conductivity of GO. Besides, the radical trapping experiments revealed that superoxide radical (•O2−) and holes (h+) were the vital active species in the photocatalytic process. Meanwhile, the corresponding photocatalytic mechanism was also investigated. In all, this work supplies a facile route to design highly efficient and stable photocatalysts for water purification.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2017
·Vol. 8
·期 2
·632-641
·
IF 5.773
Xuli Miao,Xiaoyang Yue,Xiaoping Shen,Zhenyuan Ji,Hu Zhou,Guoxing Zhu,Jiheng Wang,Lirong Kong,Miaomiao Liu,Chunsen Song
In this paper, an all solid Z-scheme Ag3PO4/GO/NCD photocatalyst has been prepared through anchoring nitrogen-doped carbon dots (NCDs) on the Ag3PO4/GO (GO = graphene oxide) composite. The Ag3PO4/GO/NCD photocatalyst exhibits excellent photocatalytic activity for the degradation of organic pollutants, methylene blue (MB), rhodamine B (RhB) and phenol, under visible-light irradiation. The pollutants MB (10 mg L−1), RhB (10 mg L−1) and phenol (50 mg L−1) could be efficiently degraded within 2.5 min, 5 min and 120 min, respectively, which are much better than that over Ag3PO4 and Ag3PO4/GO, indicating that the introduction of NCDs can further improve the photocatalytic activity of Ag3PO4/GO. Moreover, after four photocatalytic cycles, the photocatalytic activity of Ag3PO4/GO/NCDs shows only a slight decrease, demonstrating high photocatalytic stability. It is revealed that GO in the photocatalyst acts as a semiconductor and forms a Z-scheme heterojunction with Ag3PO4, while NCDs improve the oxygen activation, enhance the light harvesting capacity and serve as the reaction sites during the photocatalytic process. This study highlights the potential application of highly efficient NCD-modified photocatalysts in waste water purification.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 21
·5097
·
IF 4.2
Zifang Zhang,Junhua Bai,Yan Gong,Lifang Zhang
Ascorbic acid (AA) plays an important role in many physiological and biochemical processes. Adequate quantification of AA is required for controlling the intake of AA for health management. In this study, a portable probe was fabricated based on the assembled FePO4@GO nanozyme by homogeneous precipitation. FePO4@GO exhibits excellent peroxidase (POD) activity. As an efficient free radical scavenger, ascorbic acid scavenges1O2free radicals produced by hydrogen peroxide catalyzed by peroxidase enzymes and then inhibits the color reaction of 3,3′,5,5′-tetramethylbenzidine (TMB). A good linear relationship between the color of the reaction system and the concentration of AA in the range of 2.5–75 μM was presented, and the detection limit is 1.25 μM. Furthermore, a visual colorimetric detection platform was constructed using a smartphone. The AA content is accurately reflected by intelligent recognition of color changes in the reaction system. It provides an alternative approach for portable and visual rapid detection of Vitamin C (VC) in medicine. Meanwhile, it also provides a reference for the assembly of an intelligent detection platform based on nanozymes.
研究领域:
生物化学
·
医学检测
·
纳米材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 11
·115075
·
IF 1.449
Shaofeng Zhou,Haoran Liu,Shuzhan Wang,Lin Gan,Jin Huang,Guizhe Zhao,Yaqing Liu
Designing and fabricating novel nanomaterials with good dispersion as lubricant additives through green and simple method has remarkably potential for reducing the industrial energy consumption and engineering material loss. This study introduced a electrostatic self-assembly method to prepare graphene-load ZrO2 nanocomposites (ZrO2@GO), and their dispersion characteristics and tribological performance were investigated using as lubricant additives in paraffin oils. ZETA potential, FTIR spectra, Raman spectra, XPS and TEM characterization confirmed ZrO2 nanoparticles had been anchored on the surface of GO nanosheets. With the introducing of polar functional groups and loading function of GO, the as-prepared ZrO2@GO nanocomposites indicated good dispersion stability in paraffin oil. Thus, compared with pure paraffin oil, friction coefficient and wear rate of ZrO2@GO added paraffin oil were reduced by 20.7% and 21.5% respectively. Optical microscope photograph, 3D morphology and rough results further presented ZrO2@GO exhibited good friction reduction and wear resistance performance than single ZrO2 or GO in paraffin oil. The possible tribological mechanisms were described by a tribological model that the ZrO2@GO nanocomposites could play a synergistic role of bearing frictional load of ZrO2 nanoparticles and forming transfer film of GO on the worn surface.
研究领域:
材料科学
·
摩擦学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2024
·
IF 1.2
Qinghua YANG,Zhimin HE,Yilan SHI,Jinxin WANG,Qianying QIU,Honghai DENG,Wenhui PING
In this study, a new technique was developed which combines magnetic solid phase extraction (MSPE) and gas chromatography-mass spectrometer (GC–MS), for the analysis of 17 phthalate esters (PAEs). First, a composite of iron (used as the magnetic part) and graphene oxide (GO) was synthesized for application in MSPE. Scanning electron microscop, X-ray diffraction and infrared spectroscopy were used to characterize this material. Finally, magnetic graphene oxide (Fe₃O₄@GO) was used to extract PAEs from water samples. Various parameters relevant to the extraction were optimized, such as the amount of adsorbent employed, adsorption time, luent solvent types and volume, and sample pH. These optimum conditions resulted in calibration curves for the 17 PAEs, showing linear relationships between concentration and response at concentrations of 25 to 2500 µg L⁻¹ with correlation coefficients from 0.9983 to 1.000. Limit of detection and limit of quantitationfor the PAEs ranged from 0.030 to 0.12 µg L⁻¹ and 0.10–0.40 µg L⁻¹, respectively. The recovery rates for these compounds in spiked samples were ranging from 81.5% to 109% with relative standard deviation less than 6.12%. The effectiveness of method was further demonstrated by its use in detecting 17 PAEs in samples of drinking and bottled water. Compounds such as DEP, DIBP, DBP, and DCHP were identified. These results thus highlight the suitability of Fe₃O₄@GO as an adsorbent for concentrating and purifying PAEs in water samples.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-12
·
IF 5.3
Zhao Zexu,Hou Yang,Zhang Hao,Guo Jiahao,Wang Jinyi
Rapid and accurate in situ determination of dopamine is of great significance in the study of neurological diseases. In this work, poly (3,4-ethylenedioxythiophene): poly (styrenesulfonic acid) (PEDOT: PSS)/graphene oxide (GO) fibers were fabricated by an effective method based on microfluidic wet spinning technology. The composite microfibers with stratified and dense arrangement were continuously prepared by injecting PEDOT: PSS and GO dispersion solutions into a microfluidic chip. PEDOT: PSS/GO fiber microelectrodes with high electrochemical activity and enhanced electrochemical oxidation activity of dopamine were constructed by controlling the structure composition of the microfibers with varying flow rate. The fabricated fiber microelectrode had a low detection limit (4.56 nM) and wide detection range (0.01–8.0 µM) for dopamine detection with excellent stability, repeatability, and reproducibility. In addition, the PEDOT: PSS/GO fiber microelectrode prepared was successfully used for the detection of dopamine in human serum and PC12 cells. The strategy for the fabrication of multi-component fiber microelectrodes is a new and effective approach for monitoring the intercellular neurotransmitter dopamine and has high potential as an implantable neural microelectrode. Graphical abstract
研究领域:
生物医学工程
·
神经科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）