RADIOCHIMICA ACTA
·
2022
·Vol. 111
·期 1
·63-71
·
IF 2.083
Peng Liu,Zhuang Shen,Jiaxian Cheng,Zhen Han,Wenda Xu,Mingbo Ji,Fuqiu Ma
Due to the relative abundance, long half-life and high mobility of radioactive cesium (Cs), new adsorbents are urgently needed to treat Cs to ensure public health. In this study, a graphene oxide (GO) based adsorbent for Cs(I) adsorption was prepared by 1-aza-18-crown-6 ether modification. XRD, FT-IR, XPS and SEM results showed that the properties of 1-aza-18-crown 6 ether modified GO (18C6-GO) changed dramatically compared with that of raw graphite. The adsorption properties of 18C6-GO for Cs(I) were studied by batch static adsorption experiments. The results showed that the adsorption equilibrium time of 18C6-GO was 20 h. Kinetic study revealed that the adsorption rate of Cs(I) conformed to pseudo-second-order kinetic model. Langmuir adsorption isotherm simulation indicated that the adsorption arises at homogeneous adsorption sites on 18C6-GO. Therefore, crown ether modified GO may have implications for the treatment of wastewater.
✓ 已验证
DOI
高影响因子
Journal of Zhejiang University-SCIENCE B
·
2021
·
IF 3.066
Meilin CUI,Yuchang MA,Youwei YU
Ganoderic triterpenoids (GTs) are the primary bioactive constituents of the Basidiomycotina fungus, Ganoderma lucidum . These compounds exhibit antitumor, anti-hyperlipidemic, and immune-modulatory pharmacological activities. This study focused on GT accumulation in mycelia of G. lucidum mediated by the heme oxygenase-1 (HO-1)/carbon monoxide (CO) signaling. Compared with the control, hemin (10 μmol/L) induced an increase of 60.1% in GT content and 57.1% in HO-1 activity. Moreover, carbon monoxide-releasing molecule-2 (CORM-2), CO donor, increased GT content by 56.0% and HO-1 activity by 18.1%. Zn protoporphyrin IX (ZnPPIX), a specific HO-1 inhibitor, significantly reduced GT content by 26.0% and HO-1 activity by 15.8%, while hemin supplementation reversed these effects. Transcriptome sequencing showed that HO-1/CO could function directly as a regulator involved in promoting GT accumulation by regulating gene expression in the mevalonate pathway, and modulating the reactive oxygen species (ROS) and Ca 2+ pathways. The results of this study may help enhance large-scale GT production and support further exploration of GT metabolic networks and relevant signaling cross-talk.
✓ 已验证
DOI
PubMed
高影响因子
Biomaterials Advances
·
2022
·
IF 0
Ruimin Tang,Chunsheng Shao,Liangjian Chen,Li Yi,Bo Zhang,Jiangjie Tang,Weina Ma
Osseointegration between implants and bone tissue lays the foundation for the long-term stability of implants. The incorporation of a porous structure and local slow release of siRNA to silence casein kinase-2 interacting protein-1 (CKIP-1), a downregulator of bone formation, is expected to promote osseointegration. Here, porous implants with a porous outer layer and dense inner core were prepared by metal coinjection molding (MIM). Mg-doped calcium phosphate nanoparticles (CaPNPs)-grafted arginine-glycine-aspartate cell adhesion sequence (RGD) and transcribed activator (TAT) (MCPRT)/CKIP-1 siRNA complex and polylysine (PLL) were coated onto the surface of the porous implants by layer-by-layer (LBL) self-deposition. The in vitro results showed that the MCPRT-siRNA coating promoted MG63 cell adhesion and proliferation, enhanced the protein expressions (ALP and OC) and bone formation-related gene expression (OPN, OC and COL-1α) in vitro. The in vivo results demonstrated that the porous structure enhanced bone ingrowth and that the local slow release of MCPRT-siRNA accelerated new bone formation at the early stage. The porous structure coupled with local CKIP-1 siRNA delivery constitutes a promising approach to achieve faster and stronger osseointegration for dental implants.
✓ 已验证
DOI
PubMed
MicrobiologyOpen
·
2018
·Vol. 8
·期 1
·e00619
·
IF 2.682
Adnan B. Al-Hawash,Xiaoyu Zhang,Fuying Ma
Graphical Aspergillus sp. RFC-1 was obtained and its degradation ability for petroleum hydrocarbons was evaluated through surface adsorption, cell uptake, hydrophobicity, surface tension, biosurfactant production and emulsification activity. In addition, the degradation mechanism was investigated. The results indicated the strain RFC-1 showed high removal activity for PHs, including biodegradation, adsorption and emulsifiability. Petroleum pollution inevitably occurs at any stage of oil production and exerts a negative impact on the environment. Some microorganisms can degrade petroleum hydrocarbons (PHs). Polluted sludge of Rumaila oil field was use to isolate the highly efficient hydrocarbon-degrading fungal strain. Aspergillus sp. RFC-1 was obtained and its degradation ability for petroleum hydrocarbons was evaluated through surface adsorption, cell uptake, hydrophobicity, surface tension, biosurfactant production, and emulsification activity. In addition, the degradation mechanism was investigated. The results indicated the strain RFC-1 showed high removal activity for PHs, including biodegradation, adsorption, and emulsifiability. On the day 7 of incubation, the removal efficiencies of crude oil, naphthalene (NAP), phenanthrene (PHE), and pyrene (PYR) reached 60.3%, 97.4%, 84.9%, and 90.7%, respectively. Biodegradation efficiencies of crude oil, NAP, PHE, and PYR were 51.8%, 84.6%, 50.3%, and 55.1%, respectively. Surface adsorption and cell absorption by live mycelial pellets followed a decreasing order: PYR ≥ PHE > NAP > crude oil. Adsorption by heat-killed mycelial pellets increased within 40 and 10 min for crude oil and PAHs, respectively, and remained constant thereafter. Effects of cell surface hydrophobicity, surface tension, and emulsification index were discussed. Intra- and extracellular enzymes of strain RFC-1 played important roles in PHs degradation. The strain RFC-1 is a prospective strain for removing PHs from aqueous environments.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 2
·期 6
·1795-1801
·
IF 0
Ling Li,Xiao Lan Liu,Ming Gao,Wei Hong,Gui Zhen Liu,Lu Fan,Bin Hu,Qing Hua Xia,Li Liu,Gong Wu Song,Zu Shun Xu
The adsorption processes of methylene blue from aqueous solution on Fe3O4/HKUST-1 and Fe3O4/HKUST-1/GO composites were compared. The addition of GO has greatly decreased the surface area and pore volume, led to smaller pore size, and enhanced the adsorption capacity of Fe3O4/HKUST-1/GO. The different interesting phenomena and the effect of GO were analyzed. The high adsorption capacity, excellent reusability and stability make Fe3O4/HKUST-1/GO attractive for the removal of MB from aqueous solution.
✓ 已验证
DOI
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 17
·3929-3940
·
IF 7
Lei Fang,Yingjie Chen,Wei Shan,Tiankun Hui,Mokni Ilham,Jie Wu,Chuanli Zhou,Liangmin Yu,Meng Qiu
The drug resistance of bacteria seriously reduces the recovery rate of general disease and endangers human health. Consequently, it is urgent to investigate a non-antibiotic antibacterial material. Recently, two-dimensional MXene has shown good antibacterial properties and received extensive attention due to the large number of active sites, extremely high thermal conversion efficiency, excellent cytocompatibility and ability to penetrate pellicula. However, the antibacterial activity of Ti3C2Tx is greatly affected by the morphology and concentration. Herein, an organic–inorganic hybrid of HKUST-1@Ti3C2Tx with high specific surface area and photothermal effect was designed and fabricated. By adjusting the content of Cu(CO2CH3)2·H2O and 1,3,5-benzenetricarboxylic acid, the photothermal properties of the material can be adjusted, and the release of Cu2+ can be easily reduced. The morphological characterization and fluorescent staining of bacteria which were co-incubated with HKUST-1@Ti3C2Tx confirmed that Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) had adhered to the material. NIR irradiation has enabled induced hyperthermia and the release of Cu2+ ions, causing the disruption of the bacterial membrane, resulting in cytoplasmic leakage. Furthermore, HKUST-1@Ti3C2Tx with synergistic antibacterial effect not only exhibits an excellent bactericidal rate (over 99%) but also greatly improves cytocompatibility with the reduction of the Cu2+ ion release. Therefore, organic–inorganic composites have potential for synergistic effects and non-antibiotic antibacterial activity.
✓ 已验证
DOI
PubMed
高影响因子
MACROMOLECULES
·
2021
·
IF 5.985
Hanyu Wu,Fengxian Xu,Guanzhen Gao,Xunda Feng
Polymerization of bicontinuous cubic (Q) liquid crystals (LCs) can be utilized to produce technologically useful polymeric materials with 3-D interconnected nanopores of ∼1 nm. However, their practical applications have been hindered by the exceptionally complicated syntheses of the needed polymerizable amphiphiles and the susceptible morphological destruction upon polymerization. Here, we present a scalable strategy to fabricate polymeric membranes with 3-D interconnected nanopores by photo-crosslinking of easily accessible Q LCs. We leverage a readily synthesized, cost-effective zwitterionic monomer as the building block to construct “normal” lyotropic double gyroid (G1) mesophases that afford radical polymerization. Although self-assembly of the amphiphile in neat water forms no Q LCs, additional phosphoric acid can drive the emergence of G1 mesophases by inducing the non-constant interfacial curvature. An intriguing advantage exhibited by this polymerizable G1 system is the ability to persist upon swelling by large volumes of commercially available cross-linkers, thereby effectively facilitating structural lock-in through photo-initiated cross-linking. High-brilliance synchrotron small-angle X-ray scattering has unambiguously confirmed the excellent retention of periodic G1 morphologies in the mechanically robust polymers. Transmission electron microscopy further provides unprecedented, detailed visualization of the spacing and symmetry in the cross-linked G1 assemblies over large areas. The exceptionally easy access to the building blocks and the high-fidelity structural preservation enable the scalable fabrication of nanoporous membranes for applications such as ionic transportation, as preliminarily demonstrated.
✓ 已验证
DOI
高影响因子
Frontiers in Plant Science
·
2019
·
IF 4.106
Hussain Sajid,Bai Zhigang,Huang Jie,Cao Xiaochuang,Zhu Lianfeng,Zhu Chunquan,Khaskheli Maqsood Ahmed,Zhong Chu,Jin Qianyu,Zhang Junhua
Salt stress in soil is a critical constraint that affects the production of rice. Salt stress hinders plant growth through osmotic stress, ionic stress, and a hormonal imbalance (especially ethylene), therefore, thoughtful efforts are needed to devise salt tolerance management strategies. 1-Methylcyclopropene (1-MCP) is an ethylene action inhibitor, which could significantly reduce ethylene production in crops and fruits. However, 1-MCPs response to the physiological, biochemical and antioxidant features of rice under salt stress, are not clear. The present study analyzed whether 1-MCP could modulate salt tolerance for different rice cultivars. Pot culture experiments were conducted in a greenhouse in 2016–2017. Two rice cultivars, Nipponbare (NPBA) and Liangyoupeijiu (LYP9) were used in this trial. The salt stress included four salt levels, 0 g NaCl/kg dry soil (control, CK), 1.5 g NaCl/ kg dry soil (Low Salt stress, LS), 4.5 g NaCl/kg dry soil (Medium Salt stress, MS), and 7.5 g NaCl/kg dry soil (Heavy Salt stress, HS). Two 1-MCP levels, 0 g (CT) and 0.04 g/pot (1-MCP) were applied at the rice booting stage in 2016 and 2017. The results showed that applying 1-MCP significantly reduced ethylene production in rice spikelets from LYP9 and NPBA by 40.2 and 23.9% (CK), 44.3 and 28.6% (LS), 28 and 25.9% (MS), respectively. Rice seedlings for NPBA died under the HS level, while application of 1-MCP reduced the ethylene production in spikelets for LYP9 by 27.4% compared with those that received no 1-MCP treatment. Applying 1-MCP improved the photosynthesis rate and SPAD value in rice leaves for both cultivars. 1-MCP enhanced the superoxide dismutase production, protein synthesis, chlorophyll contents (chl a, b, carotenoids), and decreased malondialdehyde, H2O2, and proline accumulation in rice leaves. Application of 1-MCP also modulated the aboveground biomass, and grain yield for LYP9 and NPBA by 19.4 and 15.1% (CK), 30.3 and 24% (LS), 26.4 and 55.4% (MS), respectively, and 34.5% (HS) for LYP9 compared with those that received no 1-MCP treatment. However, LYP9 displayed a better tolerance than NPBA. The results revealed that 1-MCP could be employed to modulate physiology, biochemical, and antioxidant activities in rice plants, at different levels of salt stress, as a salt stress remedy.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Haijian Tong,Yuting Yang,Fengyan Shi,Mengna Ding,Liulin Luo,Yingchun Miao,Yuning Huo,Hexing Li
The serious threat of environmental microbial contamination to the health of human beings has drawn wide attentions. In this work, a series of bimetallic Co x Cu y -CAT-1 metal-organic frameworks (MOFs) with tunable Co/Cu molar ratio was prepared by one-pot route. All of Co x Cu y -CAT-1 samples were in the shape of nanorods with the strong interaction of Co and Cu centers. In addition to the less surface electronegativity and high specific surface area, which were beneficial for the contact of MOFs materials with bacteria, the bimetallic coordination in Co x Cu y -CAT-1 realized the synergistic contribution of photocatalytic-photothermal effect to the effective bacterial inactivation for E. coli , comparing to the photothermal and photocatalytic effect. The thermal effect and the intrinsic antibacterial nature of metal ions in MOFs were difficult to induce the efficient destroy of bacteria. The photocatalytic effect could not remain the stable antibacterial rate and realize the obvious mineralization effect via the photo-induced holes on Co x Cu y -CAT-1. However, the synergistic photocatalytic-photothermal effect could lead to the promoted photo-thermal conversion efficiency by the efficient visible-light absorption and electron separation/transfer, and the strong and stable photothermal effect simultaneously promoted the light absorption and electron transfer . As a result, the more efficient generation of photo-induced holes were beneficial for forming more ·OH radicals, and then ·OH radicals efficiently reacted with bacteria without the surface coverage in MOFs, leading to the stable antibacterial rate and highly effective mineralization of bacteria . This work showed the significance on the synergistic photocatalytic-photothermal contribution of bimetallic MOFs materials to the environmental sterilization in the future.
✓ 已验证
DOI
高影响因子
Biomass Conversion and Biorefinery
·
2022
·
IF 4.05
Li Keying,Zhu Hengji,Zhao Yu,Yan Jingwei,Zhang Jiajian,Lin Xiuhua,Fan Liwei,Lu Zexiang
The solvent has an important impact on liquefaction conversion from biomass to efficiently obtain fuels and chemicals. In this paper, the catalytic liquefaction of woody biomass was studied using fir sawdust as raw material and concentrated sulfuric acid as catalyst in GVL/1-octanol mixed solvent with mechanical stirring and oil bath heating. The influence of GVL on liquefaction yield was discussed, and the liquefaction productions were characterized by some analysis methods to analyze the liquefaction mechanism. The results show that adding GVL benefits to improving liquefaction yield and generating high value-added monophenol because of the enhancement of the surface wettability of biomass and the inhibition of polymerization of mononuclear aromatics with other degradation products. The maximum liquefaction yield of 76.07% was obtained under the suitable conditions of fir sawdust 10 g, temperature 150 ℃, reaction time 60 min, mass ratio of sawdust/solvent 1:6, catalyst concentration 0.6 mol·L −1 , and mass ratio of GVL/1-octanol 4:6. The mechanism study reveals that aromatics originated by lignin degradation as well as small molecule ketones from cellulose and hemicellulose degradation. GVL/1-octanol as an eco-friendly solvent system exhibits a promising prospect of application in woody biomass conversion. Graphical abstract
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2014
·
IF 2.045
Lijuan Peng,Qinbo Wang,Binwei Shen,Chuxiong Chen,Zhenhua Xiong
Liquid–liquid equilibrium (LLE) data for the ternary system water + ethylbenzene + acetophenone and water + ethylbenzene + 1-phenylethanol were determined at temperatures T = (298.2, 308.2, 318.2, and 328.2) K and atmospheric pressure. The immiscibility region was found to be relatively small and not sensitive to the change of temperature. The Othmer–Tobias and the Bachman correlations were used to test the consistency of the LLE data. The experimental data were correlated by both the nonrandom two-liquid and the universal quasichemical activity coefficient models. The relevant model interaction parameters were regressed by data fitting. The model correlated results show good agreement with the measured data. The obtained interaction parameters can be used in the calculation of LLE for the ternary system water + ethylbenzene + acetophenone and water + ethylbenzene +1-phenylethanol as well as for the design and optimization of the related separation process.
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2018
·
IF 3.972
Xiaodong Feng,Yufei Wang,Faheem Muhammad,Fuxing Sun,Yuyang Tian,Guangshan Zhu
It has been widely recognized that nanosized metal–organic frameworks (nano-MOFs) possess prominent advantages over bulky MOFs in both chemical and physical aspects, while the synthesis of nano-MOFs with well-tuned crystal sizes and shapes still remains a challenge. Herein, with the aid of microwave heating and growth modulation, we successfully synthesized the nanosized counterpart of medi-MOF-1. Cubic-shaped, nanosized medi-MOF-1 with the length of 200 nm has been produced by adding a certain amount of capping ligands which cause competitive coordination interactions during the crystal growth process. It is found that crystal sizes and morphology were controlled by changing the concentration of the capping ligand. Furthermore, hierarchical porosity was introduced to nanosized medi-MOF-1 due to the existence of defects. It is believed that the nanosized counterpart of medi-MOF-1 would have remarkable potential applications in gas storage as well as the medical and pharmaceutical fields.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）