FOOD CHEMISTRY
·
2024
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IF 8.5
Chen Yin,Xin Ding,Zhihao Lin,Jiayong Cao,Weiye Shi,Jian Wang,Dan Xu,Donghui Xu,Yuan Liu,Guangyang Liu
Fresh strawberries are easily contaminated by microorganisms after picking. Therefore, how to effectively store and keep fresh strawberries has been a hot topic for scientists to study. In this study, we prepared a leaf shaped metal organic framework nanomaterial loaded with quercetin (Quercetin@ZIF-L) at first, which can achieve effective loading of quercetin (96%) within 45 min and has a controlled release effect under acidic conditions. In addition, by cleverly combining satellite graphene oxide @ silver nanoparticles (GO@AgNPs) with slow precipitation performance, Quercetin@ZIF-L/GO@AgNPs nanocomposite film with larger pore size and larger specific surface area was prepared by scraping method. The characterization data of water flux , retention rate, flux recovery rate and water vapor permeability show that the composite film has good physical properties. The experiment of film packaging showed that the fresh life of strawberry could be extended from 3 to 8 days, which significantly improved the storage and freshness cycle of strawberry. At the same time, the metal migration test proved that the residual amount of silver ion in strawberry met the EU standard and zinc ions are beneficial to the health, enriching the types of high-performance fresh-keeping materials and broadening the application.
研究领域:
食品科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
2D Materials
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2019
·Vol. 7
·期 1
·015001
·
IF 7.343
Hong Jiang,Na Zhou,Ze-Xian Low,Yefei Liu,Weihong Xing,Huanting Wang,Rizhi Chen
A novel sheet-on-sheet Pd-ZIF/GO (Pd/ZG) catalyst is synthesized by constructing ZIF-L with GO and PVP-Pd nanoparticles (NPs) via a facile in situ method. The in situ introduction of GO promotes the formation of ZIF-L, leading to a higher yield of Pd/ZG, about three times higher than Pd/ZIF-L. We ascribe this to the possible interaction of the oxygen-containing groups on the GO surface with the Zn2+ cations in ZIF nodes and the PVP wrapped on the Pd surface, resulting in the formation of sheet-on-sheet Pd-ZIF/GO with good Pd dispersion. The Pd/ZG shows superior catalytic performance in the reduction of nitroarenes, and its turnover frequency (TOF) value is five times higher than Pd/ZIF-L. The superior catalytic activity can be ascribed to the uniformly dispersed tiny Pd NPs between ZIF-L and GO nanosheets, fast mass transfer in porous structure, and excellent electron conductivity due to strong interactions among ZIF-L, GO and PVP-Pd. These findings provide new opportunities for rational design of catalysts and their applications in the reduction of nitroarenes, important processes for industrial synthesis of pesticides, dyes, medicines, etc.
研究领域:
材料科学
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催化化学
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工业化学
✓ 已验证
DOI
高影响因子
MATERIALS LETTERS
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2015
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IF 2.489
Ling Li,Ya Q. Wu,Ke K. Sun,Run Zhang,Lu Fan,Ke K. Liang,Le B. Mao
By exploring the layer-by-layer self-assembly method and the changes of content of graphene oxide (GO), controllable preparation of a new core–shell microsphere Fe 3 O 4 @MOFs/GO was achieved in this work. The prepared composite material was characterized by the XRD , FTIR, and TEM analysis. The application of Fe 3 O 4 @MOFs/GO as drug carrier for ibuprofen was studied. The results suggested that the properties of drug loading and release can be tuned by different layers and content of GO.
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
Defence Technology
·
2021
·
IF 3.172
Yu-lan Song,Qi Huang,Bo Jin,Ru-fang Peng
To improve the safety of HMX, HMX/NH 2 -GO composite was prepared with aqueous ammonia functionalized graphene oxide (NH 2 -GO). The composite was characterized by SEM, Zeta potential, XPS, Raman spectrum, XRD, HPLC, DSC and BAM sensitivity test. The results indicated that the functionalization with aqueous ammonia can enhance the interaction between GO and HMX, and more efficiently desensitize the explosive. The optimal impact sensitivity of the HMX/NH 2 -GO composite can be not less than 40 J, which is also the most insensitivity compared to the previous reports prepared by coating desensitization with non-energetic desensitized material. Moreover, the potential reason for the different impact and friction sensitivity was also discussed, which may bring a novel perspective to achieve the desensitization of energetic material.
研究领域:
材料科学
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爆炸物安全
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化学工程
✓ 已验证
DOI
高影响因子
BIOMATERIALS
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2014
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IF 8.312
Jing Bai,Yuwei Liu,Xiue Jiang
The synergistic therapy, the combination of photothermal therapy and chemotherapy, has become a potential treatment in the battles with cancer. Here, we developed a synergistic therapy tool that based on CuS nanoparticles-decorated graphene oxide functionalized with polyethylene glycol (PEG-GO/CuS) for cervical cancer treatment. The as-synthesized PEG-GO/CuS nanocomposites with excellent biocompatibility was revealed to have high storage capacity for anticancer drug of doxorubicin (Dox) and high photothermal conversion efficiency, and were effectively employed for the ablation of tumor. In addition, the therapeutic efficacy of Dox-loaded PEG-GO/CuS (PEG-GO/CuS/Dox) nanocomposites was evaluated in vitro and in vivo for cervical cancer therapy. In vitro cell cytotoxicity tests of PEG-GO/CuS/Dox demonstrate about 1.3 and 2.7-fold toxicity than PEG-GO/CuS and free Dox under 5 min irradiation with NIR laser at 1.0 W/cm 2 , owing to both PEG-GO/CuS-mediated photothermal ablation and cytotoxicity of light-triggered Dox release. In mouse models, mouse cervical tumor growth was found to be significantly inhibited by the chemo-photothermal effect of PEG-GO/CuS/Dox nanocomposites, resulting in effective tumor reduction. Overall, compared with chemotherapy or photothermal therapy alone, the combined treatment demonstrates better therapeutic efficacy of cancer in vitro and in vivo . These findings highlight the promise of the highly versatile multifunctional nanoparticles in biomedical application .
研究领域:
生物医学工程
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肿瘤学
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纳米医学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2017
·
IF 5.401
Bing Zhang,Hongyun Meng,Xue Wang,Honghong Chang,Wenlong Wei
Mercuric ion (Hg 2+ ) as one kind of environmental pollutants has attracted more and more attentions due to its persistence, mobility and biological enrichment. In this study, a novel photoelectrochemical biosensor for Hg 2+ detection was constructed based on dye sensitization effect induced by Y-shaped DNA transformation as signal amplification strategy. Firstly, graphene oxide-ZnO-CdS nanohybrid (GO-ZnO-CdS) as photoelectric material was synthesized by simple hydrothermal method, and was employed to modify ITO electrode. Secondly, Y-shape DNA was labeled by Au NPs in the solution, and which crosslinked on the surface of GO-ZnO-CdS modified ITO electrode by carbodiimide coupling method, which resulted in the excitation energy transfer (EET) effect between Au NPs and CdS. Finally, in the presence of Hg 2+ , the structure of DNA on the modified electrode changed from Y-shape into hairpin accompanying the proximity of dye molecule based on T-Hg 2+ -T, which eliminated EET effect and triggered dye sensitization effect for enhancing photocurrent response. Under optimal conditions, the photocurrent linearly increased with the increasing of Hg 2+ levels in the range of 5 pM − 500 pM with the detection limit of 1:5 pM(LOD = 3σ blank / s ). More importantly, the developed biosensor showed the advantages of acceptable selectivity, repeatability and stability.
研究领域:
环境科学
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生物传感
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8540-8547
·
IF 3.119
Guohai Yang,Daqing Zhang,Gen Zhu,Tingrong Zhou,Manting Song,Lulu Qu,Kecai Xiong,Haitao Li
The instability of graphene oxide (GO) membranes in aqueous solutions restricts their application in wastewater treatment through the membrane separation technology. In this work, a nanocomposite membrane (Sm-MOF/GO) composed of samarium metal–organic frameworks (Sm-MOFs) and GO nanosheets was successfully fabricated via the filtration of the corresponding Sm-MOF/GO dispersions. The in situ growth of Sm-MOF with aqueous stability on the GO sheets prevented the adjacent GO layers from expanding in aqueous solutions, thus endowing the prepared Sm-MOF/GO membrane with a stable membrane skeleton structure. Besides, the successful loading of Sm-MOF enlarged the layer space of the composite membrane, which was beneficial for higher permeance. The optimization of the Sm-MOF loading contents was also investigated to prepare M-X (where X represents the mass ratio of the MOF raw material to the total mass of the reactants). Subsequently, the fabricated M-0.31 possessed a high permeance of 26 L m−2 h−1 bar−1, which was 3 times higher than that of a pure GO membrane; moreover, high rejections (>91%) to rhodamine B and methylene blue were obtained. After continuous 5.5 h filtration, the excellent rejection was still maintained as expected, indicating the long-term stability of M-0.31.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Linfa Bao,Jingjing Han,Huifang Wang,Renrong Liu,Muqing Qiu,Baowei Hu
In this study, a novel synergistic photocatalyst (Fe 3 O 4 /GO/g-C 3 N 4 composites) were constructed by chemical precipitation of Fe 3 O 4 nanoparticles on surface of GO/g-C 3 N 4 suspension. The characterization results indicated that Fe 3 O 4 /GO/g-C 3 N 4 composites exhibited high efficient separation of photogenerated electron–hole pair, narrow bandgap (∼2.38 eV) and wide absorption range. The incorporation of Fe 3 O 4 significantly increased the photocatalytic performance of GO/g-C 3 N 4 composites due to synergistic effect. More than 90% of U(VI) was photo-reduced by Fe 3 O 4 /GO/g-C 3 N 4 composites within 2 h under visible light irradiation. The trapping experiments and XPS analysis indicated that the photogenerated electrons and superoxide ( ⋅ O 2 ) radicals are responsible for U(VI) removal. These findings indicated that magnetic g-C 3 N 4 composites can be used as excellent candidates for the high efficient removal of U(VI) in actual environmental cleanup.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2019
·Vol. 319
·期 3
·737-748
·
IF 1.186
Feng Sheng,Ni Ziqiu,Feng Shanshan,Zhang Zhihui,Liu Shuguang,Wang Runbai,Hu Jiawei
In this study, the UiO-66/Fe 3 O 4 /GO composite was prepared by one step method for removal of cesium ions (Cs + ) in water and exhibited excellent adsorption capacity for Cs + (62.07 mg g −1 ), which can be attributed to the size compatibility of nanosized cavities and the addition of GO. As supporting matrix, GO decreased particle aggregation and increased the surface area of the adsorbent. The composite had good acid and alkali resistance, thermal stability, rapid adsorption rate and can be separated from water by magnetic separation rapidly.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 18
·3234
·
IF 5.719
Tianen Chen,Allen Yang,Wei Zhang,Jinhui Nie,Tingting Wang,Jianchao Gong,Yuanhao Wang,Yaxiong Ji
Herein, we present an innovative graphene oxide (GO)-induced strategy for synthesizing GO-based metal-organic-framework composites (Co-BTC@GO) for high-performance supercapacitors. 1,3,5-Benzene tricarboxylic acid (BTC) is used as an inexpensive organic ligand for the synthesis of composites. An optimal GO dosage was ascertained by the combined analysis of morphology characterization and electrochemical measurement. The 3D Co-BTC@GO composites display a microsphere morphology similar to that of Co-BTC, indicating the framework effect of Co-BTC on GO dispersion. The Co-BTC@GO composites own a stable interface between the electrolyte and electrodes, as well as a better charge transfer path than pristine GO and Co-BTC. A study was conducted to determine the synergistic effects and electrochemical behavior of GO content on Co-BTC. The highest energy storage performance was achieved for Co-BTC@GO 2 (GO dosage is 0.02 g). The maximum specific capacitance was 1144 F/g at 1 A/g, with an excellent rate capability. After 2000 cycles, Co-BTC@GO 2 maintains outstanding life stability of 88.1%. It is expected that this material will throw light on the development of supercapacitor electrodes that hold good electrochemical properties.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 86
·54898-54910
·
IF 3.108
Quanling Xie,Wenyao Shao,Shishen Zhang,Zhuan Hong,Qiuquan Wang,Birong Zeng
In this work, novel thin-film nanocomposite (TFN) nanofiltration (NF) membranes were developed through modification with maleic anhydride functionalized graphene oxide (MAH-GO) via interfacial polymerization (IP). First, MAH-GO was synthesized by linking MAH molecules to the electrophilic groups (C–OH) of GO nanosheets. The resulting materials were characterized in depth by FT-IR, TEM, SEM, AFM, XPS and Raman spectroscopy. Subsequently, the MAH-GO and GO nanosheets were individually introduced into the polypiperazine-amide (PPA) active layer of TFN NF membranes via IP between piperazine (PIP) and trimesoyl chloride (TMC). The influence of the MAH-GO or GO concentrations on the morphology and performance of TFN NF membranes was systematically investigated. Compared with TFC-blank, the TFN-MG-60 and TFN-GO-80 membranes demonstrated significantly enhanced separation performance without reduction of the salt rejection. Particularly, the water flux of TFN-MG-60 and TFN-GO-80 was found to be 49.3 L m−2 h−1 and 42.0 L m−2 h−1, respectively, corresponding to 176.7% and 150.5% of TFC-blank. Moreover, TFN-MG-60 demonstrated superior water permeability, antifouling capability and chlorine resistance to TFN-GO-80, which was attributed to the incorporation of MAH-GO nanosheets having more hydrophilic carboxyl groups. Meanwhile, TFN-MG-60 retained a high salt rejection rate of 97.6% to Na2SO4, comparable to that of TFC-blank. The MAH-GO nanosheets show great potential in developing high-performance TFN NF membranes to overcome the trade-off effect of conventional thin-film composite membranes.
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
CHEMOSPHERE
·
2022
·
IF 8.943
Liangdi Zhu,Yuxing Zhou,Lingyun Fei,Xunlong Cheng,Xixi Zhu,Lanqing Deng,Xin Ma
CuO/Fe 3 O 4 /GO, as a Z-scheme heterojunction catalyst, was successfully synthesized and used as a photocatalyst for removing tetracycline from aqueous solution. The CuO/Fe 3 O 4 /GO heterogeneous catalyst combines the narrow bandgap semiconductor CuO, oxygen vacancies of Fe 3 O 4 , and oxygen-containing reaction sites of GO. Without the addition of activators (persulfate or H 2 O 2 ), the photocatalytic performance on decomposing tetracycline is very excellent. Compared with GO, Fe 3 O 4 , and CuO, CuO/Fe 3 O 4 /GO exhibits superior photocatalytic performance. Under visible light radiation , CuO/Fe 3 O 4 /GO generates h + and ⋅O 2 − , which are the mainly responsible active groups for TC degradation . The effects of various pH, catalysts, and reuse on the degradation performance are evaluated, and the optimal conditions for CuO/Fe 3 O 4 /GO removal of tetracycline are obtained at pH 7, catalyst dosage 20 mg⋅L −1 , TC at a concentration of 30 mg/L, nearly 97.3% of tetracycline is decomposed. This study has great potential in the treatment of wastewater containing various antibiotics.
研究领域:
环境科学
·
材料科学
✓ 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）