Nanoscale Research Letters
·
2015
·Vol. 10
·期 1
·1-9
·
IF 2.779
Zhang Li,Jamal Ruxangul,Zhao Qin,Wang Minchao,Abdiryim Tursun
The nanocomposite materials of poly(3,4-ethylenedioxythiophene)/graphene oxide (PEDOT/GO), poly(3,4-ethylenedioxythiophene)/MnO 2 (PEDOT/MnO 2 ), and poly(3, 4-ethylenedioxythiophene)/graphene oxide/MnO 2 (PEDOT/GO/MnO 2 ) were successfully prepared by facile and template-free solution method. The structure and morphology of nanonanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible absorption spectra (UV–vis), field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX), respectively. The catalytic activities of nanocomposites were investigated through the degradation processes of methylene blue (MB) solution under dark, UV light, and nature sunlight irradiation, respectively. The results displayed that nanocomposites were successfully synthesized, and PEDOT/GO had higher conjugation length and doped degree than pure PEDOT. However, the introduction of MnO 2 could lead to the reduction of conjugation length and doped degree in PEDOT/MnO 2 and PEDOT/GO/MnO 2 nanocomposites. The field emission scanning electron microscope (FESEM) analysis also showed that both MnO 2 and GO had some effect on the morphology of nanocomposites. The catalytic activities of pure PEDOT and nanocomposites were in the order of PEDOT/GO/MnO 2 > PEDOT/MnO 2 > PEDOT/GO > pure PEDOT. Besides, the catalytic results also showed that the highest degradation efficiency of MB after 7 h occurred in the PEDOT/GO/MnO 2 composite in three irradiation.
研究领域:
材料化学
·
环境催化
·
纳米材料科学
·
高分子化学
·
光催化
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 2
·183
·
IF 4.329
Xiaoyan Liu,Handuo Jie,Ruidan Liu,Yanqi Liu,Tianyu Li,Kai Lyu
Due to its special two-dimensional lamellar structure, graphene possesses an excellent shielding effect, hydrophobic characteristics and large specific surface area, which can effectively isolate the internal structure from the external corrosive media. However, lamellar graphene is easy to stack and agglomerate, which limits its anti-corrosion performance. In this paper, cerium oxide-graphene oxide (CeO2-GO) nanocomposites were prepared by a hydrothermal synthesis method. Field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) were applied for microstructure examination, showing that a large number of nanoscale granular cerium oxide grew on the lamellar graphene oxide surface, which improved the dispersion performance of graphene inside the matrix. The anti-corrosion properties of the coating were analyzed and illustrated by open circuit potential (OCP), frequency response analysis, Tafel curve and Mott–Schottky curve. The results indicated that the CeO2-GO (4:1) nanocomposite not only eliminated the agglomeration of graphene to some extent, but also prepared the graphene epoxy coating with good dispersion, which further promoted its anti-corrosion performance. The paper proposed a feasible solution for GO dispersion in cement-based materials and lays a solid theoretical foundation for the engineering application of cerium oxide-graphene oxide modified anticorrosive coating.Keywords:CeO2;GO;CeO2-GO;dispersion;anti-corrosion performance
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhiren Zhou,Lina Zou,Ping Zhang,Chunmei Li,Ye Zhu,Huanyu Ren,Zheng Li,Huiru Niu,Hao Liao,Xiaojing Zhang,Shanshan An,Fei Ren,Xiuhong Ge,Lang Cheng,Feiyan Yang,Hongzhi Pan,Shengzhong Rong,Dong Chang,Hongkun Ma
Survivin serves as a crucial biomarker for bladder cancer, so exploring the detection method is essential. Therefore, a sensitive ratiometric electrochemical immunosensor was developed. In brief, a double-layered amino graphene oxide (NH 2 -GO) sandwich enhanced by Fe-Ni@Ti 3 C 2 T x (NH 2 -GO/Fe-Ni@Ti 3 C 2 T x /NH 2 -GO) significantly amplified the detection signal. ferrocene@Au nanoparticles (Fc@AuNPs) provided a reference signal, and Ab 1 was anchored via an Au-N bond. Moreover, AuPt-methylene blue (AuPt-MB) served not only as a secondary signal but also anchored Ab 2 through Au-NH 2 and Pt-NH 2 bonds. Black phosphorus nanoplates (BPNPs) improved conductivity and provided additional binding sites for AuPt-MB. The immunosensor exhibited a broad detection range (0.001~1000 ng/mL) and a low detection limit (0.00065 ng/mL), facilitating successful survivin detection in human urine samples with promising clinical analysis applications.
研究领域:
生物医学工程
·
分析化学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Hongbin Li,Wenying Shi,Xianhua Zeng,Shoufa Huang,Haixia Zhang,Xiaohong Qin
Hydrophobic nanofibers have attracted great attention in the membrane distillation (MD) process because of their extremely high specific surface area. In this study, hydrophobic nanofibrous composites for vacuum membrane distillation (VMD) consisting of a hydrophobic polyvinylidene fluoride (PVDF) nanofibrous layer and a hydrophobic polypropylene (PP) nonwoven fabric (NWF) substrate were presented. PVDF nanofibrous layer was directly fabricated on the surface of PP NWF substrate by electrospinning technique. 1 H , 1 H , 2 H , 2 H -perfluorooctyltriethoxysilane (FTES) functionalized GO nanosheets were incorporated in the PVDF nanofiber layer during the electrospinning process to enhance the hydrophobicity and permeation water flux for VMD. Membrane surface morphology and composition were characterized through SEM and FTIR. The effects of FTES-GO nanosheets content on the VMD desalination properties were investigated. And the transfer mechanism of water vapors through the FTES-GO incorporated nanofibrous layers was also proposed. Compared with the original PVDF nanofibrous layer, the surface hydrophobicity, liquid entry pressure ( LEP ) and water permeability of the FTES-GO incorporated nanofibrous layers had all been improved. When FTES-GO content was 4 wt%, the WCA increased from 104.0° for the neat PVDF nanofibrous layer to 140.5° for the modified nanofibrous layer. The permeation water flux reached a maximum value of 36.4 kg m −2 h −1 . It was two times the water flux of the original membrane and meanwhile the salt rejection remained above 99.9% (50 °C, 3.5 wt% NaCl aqueous solution and permeation pressure of 31.3 kPa). No obvious wetting phenomenon was observed for FTES-GO incorporated membrane during the continuous VMD experiment for 60 h.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Guang-Yu Cui,Wei Zhang,Ji-Min Yang
Metal−organic framework (MOF)@graphene oxide (GO) composite materials possess the advantages of both GO and MOFs, and thus, they can be employed as effective dye adsorbents. This paper proposes a simple strategy for the preparation of MIL-101 @GO composite materials to effectively adsorb anionic dyes (Congo red, o-cresolsulfonphthalein, methyl orange, and acid chrome blue K) by adding GO to MIL-101 to form a nano-packed structure. The maximum adsorption uptakes of MIL-101 @GO were 2734.9, 484.5, and 1762.8 mg g –1 for Congo red, o-cresolsulfonphthalein, and methyl orange, respectively. These values significantly exceed the corresponding values of the original MIL-101 because of additional factors that promoted adsorption, namely hydrogen bonding and the presence of agglomerate pores. Only the maximum adsorption uptake for acid chrome blue K was lower than that of MIL-101, because of steric hindrance . Our analysis showed that the adsorption behavior of MIL-101 @GO toward Congo red, o-cresolsulfonphthalein, and methyl orange is governed by a synergistic interplay of hydrogen bonding, electrostatic interactions, π–π interactions, the adsorption space, and agglomerate pores in the composite, whereas the adsorption behavior toward acid chrome blue K is mainly limited by steric hindrance. Understanding these interactions may contribute to the development of improved sustainable composite adsorbents.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Biomaterials and Tissue Engineering
·
2023
·Vol. 13
·期 6
·753-764
·
IF 0.1
Cheng Xu-Mei,Ma Rui,Zhou Yan-Bing,Li Tao,Lei Sheng-Nan,Zheng Xin,Zhang Hui-Xiao,Liu Mei-Tian,Zhou Jian-Ye,Li Zhi-Qiang
Bone defect repair is a hot topic in tissue engineering, and the development of economical and effective bone scaffold materials to achieve the goal of repairing bone defects is an important task for researchers. In this experiment, fresh bovine cancellous bone was used as a xenogeneic
bone material. After two high-temperature calcinations, β-tricalcium phosphate (β-TCP) material was obtained. An in-situ co-precipitation method was employed to prepare hydroxyapatite+graphene oxide (HA+GO) composite material. Then, the β-TCP material
was immersed in the HA+GO composite material solution to prepare β-TCP+HA+GO composite material. The surface modification of β-TCP material with HA and GO improved the elastic modulus of the raw material. In vitro cell showed that the composite material was non-toxic,
biocompatible, and promoted the proliferation of MC3T3-E1 cells on the β-TCP+HA+GO material. Finally, it was found that β-TCP+HA+GO composite material effectively stimulated the actin and mineralization behavior of MC3T3-E1 cells, and promoted the expression of bone-related
factors such as Alkaline phosphatase (ALP), Collagen I (COLI), Osteocalcin (OCN), Bone Morphogenetic Protein-2 (BMP-2), and Bone Morphogenetic Protein-7 (BMP-7) in MC3T3-E1 cells In conclusion, β-TCP+HA+GO composite material can be applied in the biomedical field as a bone substitute
or repair material.
研究领域:
组织工程学
·
生物医学材料
·
细胞生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Kai Zhou,Changsheng Guo,Feng Gan,John H. Xin,Hui Yu
In existing separation membranes, it is difficult to quickly produce large-area graphene oxide (GO) nanofiltration membranes with high permeability and high rejection, which is the bottleneck of industrialization. In this study, a pre-crosslinking rod-coating technique is reported. A GO-P-Phenylenediamine (PPD) suspension was obtained by chemically crosslinking GO and PPD for 180 min. After scraping and coating with a Mayer rod , the ultra-thin GO-PPD nanofiltration membrane with an area of 400 cm 2 and a thickness of 40 nm was prepared in 30 s. The PPD formed an amide bond with GO to improve its stability. It also increased the layer spacing of GO membrane, which could improve the permeability. The prepared GO nanofiltration membrane had a 99 % rejection rate for dyes such as methylene blue, crystal violet, and Congo red. Meanwhile, the permeation flux reached to 42 LMH/bar, which was 10 times that of the GO membrane without PPD crosslinking, and it still maintained excellent stability under strongly acidic and basic conditions. This work successfully solved the problems of GO nanofiltration membranes, including the large-area fabrication, high permeability and high rejection.
研究领域:
材料科学
·
纳米技术
·
膜技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2024
·
IF 2.9
Yu Cao,Mingji Wu,Yu Chen,Xiaomiao Feng
Flexible two-dimensional nickel-cobalt metal-organic frameworks/graphene oxide/carbon nanotubes hybrid films (2D NiCo-MOF/GO/CNTs) have been designed and prepared as high-performance supercapacitor electrode materials via vacuum filtration. The 2D NiCo-MOF nanosheets serve as the main source of capacitance for the hybrid films, while CNTs function as both the conductive network, enhancing the electrical conductivity of the MOFs, and the binder, linking the 2D NiCo-MOF nanosheets and GO. When the mass ratio of 2D NiCo-MOF, GO, and CNTs is 2:1:0.5, the hybrid film exhibits a high specific capacitance of 40.3 F g-1 at 0.4 A g-1. Furthermore, the film electrode demonstrates outstanding cycling stability, with a capacitance retention of 96.3% after 2000 cycles at 1 A g-1. Notably, the CV curves of the asymmetric supercapacitor (ASC) show almost no change after multiple bending, indicating excellent flexibility. Additionally, two devices connected in series can light an LED, demonstrating significant potential for practical applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Gongduan Fan,Chongguo Chen,Xiaolei Chen,Zhongsheng Li,Shulei Bao,Jing Luo,Dingsheng Tang,Zhongsen Yan
Ultrafiltration is an environmentally friendly water treatment technology, but membrane fouling significantly impacts membrane performance and service life. Photocatalytic modification of membrane is regarded as an effective way for membrane fouling control. In this study, graphite oxide (GO), Ag 3 PO 4 and Ag 3 PO 4 -GO nanomaterials were applied in polyvinylidene fluoride (PVDF) ultrafiltration membranes modification, and the membranes was denoted as P-GO, P-AgP and P-AgP@GO, respectively. Filtration of humic acid (HA) at different operating conditions was adopted in evaluation of membrane performance. Among them, P-AgP@GO had the best permeation, rejection and antifouling performances, and could maintain excellent properties when operation conditions (HA concentration, operation pressure, pH and ionic strength) were changed. Furthermore, the effect of photocatalysis on the self-cleaning performance and its mechanism were revealed. The overall performance of P-AgP@GO could be enhanced by visible light irradiation, and extending the visible illumination time during the filtration was conducive to the reusability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2023
·Vol. 48
·期 7
·e202200317
·
IF 1.8
Jian Guan,Huan Peng,Yulan Song,Bo Jin,Rufang Peng
The thermal decomposition of Hexanitrohexaazaisowurtzitane CL-20/HMX-ammonium formate functionalized graphene oxide (Am-GO) composites was studied using an isothermal decomposition dynamics research instrument to explore the effects of Am-GO on the stability of CL-20/HMX co-crystal. The gas pressure-time curve generated by thermal decomposition reaches the decomposition inflection point at a decomposition degree of 85 %. Compared with CL-20/HMX co-crystal, the decomposition extent corresponding to the inflection point of the thermal decomposition curve of the composites increases. The activation energies of the composites before and after the inflection point of the pressure-time curve were 161.3 kJ/mol and 171.0 kJ/mol, respectively. The residual substances produced by the thermal decomposition of the composites were characterized by HPLC and FTIR. Results showed that CL-20 and HMX were decomposed before the inflection point of the decomposition pressure-time curve. However, the decomposition of CL-20 was completed before the inflection point, whereas that of HMX ran through the thermal decomposition process. The calculation results of thermal decomposition kinetics show that the addition of coating material increases the activation energy of co-crystal and stabilizes CL-20/HMX co-crystal.
研究领域:
材料科学
·
化学动力学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2020
·Vol. 21
·期 12
·4224
·
IF 4.556
Wenxiu Yang,Yonggui Li,Long Feng,Yimiao Hou,Shuo Wang,Bo Yang,Xuemin Hu,Wei Zhang,Seeram Ramakrishna
Photothermal conversion materials have attracted wide attention due to their efficient utilization of light energy. In this study, a (GO)/Bi2S3-PVDF/TPU composite nanofiber membrane was systematically developed, comprising GO/Bi2S3nanoparticles (NPs) as a photothermal conversion component and PVDF/TPU composite nanofibers as the substrate. The GO/Bi2S3NPs were synthesized in a one-step way and the PVDF/TPU nanofibers were obtained from a uniformly mixed co-solution by electrospinning. GO nanoparticles with excellent solar harvesting endow the GO/Bi2S3-PVDF/TPU membrane with favorable photothermal conversion. In addition, the introduction of Bi2S3NPs further enhances the broadband absorption and photothermal conversion properties of the GO/Bi2S3-PVDF/TPU composite membrane due to its perfect broadband absorption performance and coordination with GO. Finally, the results show that the GO/Bi2S3-PVDF/TPU composite membrane has the highest light absorption rate (about 95%) in the wavelength range of 400–2500 nm. In the 300 s irradiation process, the temperature changes in the GO/Bi2S3-PVDF/TPU composite membrane were the most significant and rapid, and the equilibrium temperature of the same irradiation time was 81 °C. Due to the presence of TPU, the mechanical strength of the composite film was enhanced, which is beneficial for its operational performance. Besides this, the morphology, composition, and thermal property of the membranes were evaluated by corresponding test methods.Keywords:graphene oxide/bismuth sulfide;solar distillation;nanofiber membrane;photothermal conversion
研究领域:
材料科学
·
纳米技术
·
太阳能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 6
·4432-4442
·
IF 3.201
Dongshu Sun,Minjia Meng,Yao Lu,Bo Hu,Yongsheng Yan,Chunxiang Li
An hybrid membranes based on functional GO nanosheet for selective adsorption lithium from compound was great potential. Here, a simple and efficient methodology was reported to obtain high stability, selectivity, and antifouling properties. More importantly, we studied the selective adsorption capacity of the fabricated membranes to lithium under a high magnesium and low lithium environment. The results showed that the fabricated membrane exhibited excellent lithium adsorption and highly selective adsorption efficiency. The fabricated membranes presented a relatively lower contact angle (67.226°) and a higher membrane flux (13.62 mL cm−2 min−1), which indicated that the fabricated membrane had a high hydrophilicity because the presence of carboxylic and hydroxyl groups of GO could enhance the interaction between the membrane and water. Moreover, the perm-selectivity results (β values were greater than 7) and regeneration ability (90.9% of the maximum adsorption capacity was retained after 10 cycles) were shown. The overall results suggested that functional GO can be considered as an effective additive for inorganic–organic composite membranes for the selective adsorption of lithium. It is worth mentioning that this methodology can be applied to selectively identify and adsorb lithium and is environmentally friendly, as it does not lead to secondary pollution.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）