RSC Advances
·
2021
·Vol. 11
·期 30
·18448-18457
·
IF 3.361
Ying Zhao,Xi He,Han Wang,Jiufu Zhu,Huimin Wang,Yan Zheng,Song Zhu,Zhanchen Cui
Hydrolysis resistance is essential to the durability of the dentin bonding interface. Urushiol is a natural monomer that has been used in different fields over thousands of years but has the disadvantage of a long drying time. In this study, we evaluated a novel photocurable derivative of urushiol as the main monomer for polymerization in dentin adhesive and its effect on hydrolysis resistance. The derivative was characterized by Fourier transform infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy. Compared with the Adper Single Bond 2, the experimentally synthesized adhesives had higher contact angles. In particular, the water sorption/solubility of the experimental samples were significantly lower than that of Adper Single Bond 2. The microtensile bond strengths of the test groups were higher than that of the control group, even after 5000 thermocycles. Cytotoxicity test results showed that adhesives based on the original derivative induced low toxicity to L929 cells. The results of this study may shift the focus of future research to natural monomers and even their derivatives which may perform well in dentistry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2021
·
IF 4.833
Ying Su,Pengyu Li,Dangge Gao,Bin Lyu,Jianzhong Ma,Jiahao Zhang,Leihong Lyu
Leather is easy to breed colonies or mildew during the storage process , destroy the fiber structure, and affect human health. The antibacterial treatment of leather is usually through adding antimicrobials during the re-tanning process. However, traditional leather antibacterial agent has benzene, sulfur and other harmful substances. In recent years, they have been banned in the process of making leather. In this study, poly(dimethyl diallyl ammonium chloride-methacrylic acid)/silver deposited ZnO composite was prepared by in-situ method and used in leather re-tanning process. The self-assembly behavior occured between silver deposited ZnO and polymer with the flower-like morphology formed via the situ polymerization. After re-tanning process, Ag/ZnO and N + in the composite provide leather with efficient antibacterial, anti-mildew and physical properties. Meanwhile, there were no harmful substances in the composite compared with traditional leather antibacterial agent, which was a kind of “friendly” antimicrobial material.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Song Ma,Yanzheng Ji,Yongjie Dong,Siqi Chen,Yingjie Wang,Shaoyu Lü
Stimulus-responsive pesticide or fertilizer systems have been emerged to improve the use efficiency of agrochemicals , reduce over-application and ensuing environmental problems. However, environmental-friendly synthesis of these systems still remain challenging. In this work, an environmental-friendly synthesis strategy has been developed to form a pesticide and fertilizer combination to achieve the integration of plant protection and nutrient supply. This pesticide-fertilizer combination system was fabricated using ammonium zinc phosphate (ZNP) and in-situ synthesized zeolitic imidazolate framework-8 (ZIF-8) as nutrients resources, and dinotefuran (DNF) as a pesticide. DNF was encapsulated in-situ (loading capacity of 12.32 ± 0.46%) during the ZIF-8 crystal synthesis process, rather than loaded by further adsorption, which improved its stability and prevented premature or rapid release. The hydrophobic ZIF-8 provided a pH-responsive slow-release behavior. The cumulative released DNF within seven days at pH 4.0, 7.0 and 10.0 was 66.30%, 40.41%, and 37.44%, respectively. The pesticide-fertilizer combination system showed significant effects on corn seed pre-cultivation, soil cultivation and pest control. This work provides a strategy for the integration of pesticide and fertilizer, which will reduce negative environmental effects caused by their over-applications and have great potential in modern sustainable agriculture.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Energy Research
·
2021
·
IF 4.008
Yang Yi-Wen,Song Bing-Ye
Carbon-based materials hybridized with metal sulfides have gained growing attention as catalytic materials for oxygen reduction reaction (ORR) due to their synergistic effects in terms of richer structural features and higher electrochemical activities. Here, a series of Zn/Co/Fe-based metal-organic frameworks (MOFs) as the precursors, which can be adopted as efficient ORR catalysts, were synthesized through a sulfuration–calcination treatment. The effects of precursor composition, heteroatom doping, and pyrolysis temperature on the structure and electrochemical performance of the catalysts were discussed in detail. It is found that well-grown carbon nanotubes (CNTs) on the surface of graphitic carbon matrix are formed under the synergy effect of trimetallic-based species during pyrolysis. Benefiting from the three-dimensional unique structure with appropriate dopants and high porosity, the catalyst derived from the optimized Zn/Co/Fe-MOFs achieves a half-wave potential of 0.87 V in an alkaline medium for ORR, which is comparable with commercial electrocatalysts. In addition, an outstanding ORR durability of the proposed catalyst in alkaline media was also demonstrated. This work highlights the potential to rationally design and fabricate high-performance ORR catalysts for commercialization.
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2021
·Vol. 36
·期 6
·1459-1468
·
IF 2.464
Shiyan Lu,Guangzhi Yuan,Yongfei Zhu,Shujuan Yu
For environmental protection, organic dyes and solvents of industrial wastewater must be eliminated. Here, a citric acid-based carbon dots (CA-CDs) crosslinked chitosan/microcrystalline cellulose (CS/MCC/CA-CDs) sponge was synthesized to study its adsorption performance for methyl blue (MB) dye. The morphology of the sponge was a tangled fibre with a bundle formed by hydrogen bonds between CA-CDs and the CS/MCC composite matrix. The abundant amount of tangled fibre bundle units can offer plentiful active adsorption sites to collect the dye molecules. The adsorption capacity of the CS/MCC/CA-CDs sponge toward MB was 306.8 mg/g at pH 10 and a temperature of 298 K. In addition, the pseudo-second-order kinetic model was matched with the adsorption kinetic experimental data, and the adsorption isotherm data can be described by the Langmuir models. This study proposed that the CS/MCC/CA-CDs sponge adsorbent creates tremendous potential application value in wastewater treatment due to its fast kinetics, high adsorption capacity, simple preparation, and eco-friendly properties.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2021
·Vol. 328
·期 3
·1161-1172
·
IF 1.371
Cui Mingzhu,Xiang Siyu,Zhang Siyu,Long Ting,Luo Zhenghang,Yang Haijun
In this paper, an amidoximated polyorganophosphazene (PCCP-AO) adsorbent was concizely synthesized via poly(cyclotriphosphazene- co -polyethyleneimine) (PCCP) prepared from hexachlorocyclotriphosphazene (HCCP) and polyethyleneimine (PEI). PCCP and PCCP-AO were characterized by FTIR, SEM, BET and TGA. SEM images showed that both adsorbents had a morphorlogy of microsphere. The influences of pH values, contact times, initial U(VI) concentrations, temperatures and co-existing ions on the U(VI) adsorption properties of PCCP and PCCP-AO were studied. Data showed that PCCP and PCCP-AO exhibited high U(VI) adsorption capacities of 293.2 mg g −1 and 319.1 mg g −1 respectively. PCCP-AO has a higher adsorption capacity, a faster adsorption rate and a better U(VI) selectivity than PCCP. Besides, PCCP-AO exhibited good reusability.
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Wei Xu,Jiayi Yang,Shuangshuang Liu,Yan Meng,Di Feng,Lingjie Jia,Sida Liu,Baolong Wang,Xiuhan Li
Liquid-solid triboelectric nanogenerator (LS-TENG) has emerged as a powerful tool in energy harvesting and motion detecting. There is a recognized need for improving the power output and signal-to-noise ratio of LS-TENG. The instantaneous discharging mechanism of LS-TENG is studied and experimentally realized by a controllable switch structure in this paper. The peak short circuit current and peak power output (at 1 MΩ) are increased by over 26 and 1700 times, respectively, with respect to the control LS-TENG working in the single electrode mode. This research provides a fresh insight in designing sensors with high signal-to-noise ratio and energy harvestors that have a superior performance in driving devices with low load resistance.
✓ 已验证
产品关联
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2021
·
IF 6.291
Zhiying Zhang,Ting Pan,Chunrong Liu,Xiaoyun Shan,Zeqiong Xu,Huachang Hong,Hongjun Lin,Jianrong Chen,Hongjie Sun
The widespread use of cyclophosphamide (CP) in medical treatment had caused ubiquitous contamination in the environment. To data, many studies have been carried out on the toxic effect of CP. However, among these toxic effects of CP, which are the most sensitive remains unclear. Present study aimed to investigate the toxicity of CP on mice and evaluate the sensitivity of physiological-biochemical parameters upon exposure of mice to CP. Results showed that as compared with the control group, CP caused significant reduction in body weight (p < 0.01), spleen coefficient (p < 0.01), leukocyte density (p < 0.01) and alanine transaminase (ALT) in kidney (p < 0.01); However superoxide dismutase (SOD), malondialdehyde (MDA), ALT in liver and creatinine (Cr) in kidney significantly (p < 0.05) increased. Among the suppressed physiological and biochemical parameters, the sensitivity to CP toxicity was generally ranked as body weight > leukocyte density > ALT in kidney > spleen coefficient; while among the stimulated parameters, the sensitivity was ranked as MDA (liver) > Cr (kidney) > ALT (liver). Overall, the most sensitive parameters to CP toxicity may be associated with growth, immune system and the normal function of liver and kidney.
✓ 已验证
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2021
·Vol. 10
·期 8
·2001953
·
IF 9.933
Qikun Cheng,Lu Liu,Mingzhi Xie,Hang Li,Dong Ma,Wei Xue
Probiotics are closely related to human health. However, it is hard to find an appropriate disintegration mode for encapsulation to balance the survival, release, and adhesion of probiotics simultaneously during the current colon-targeted oral delivery, which leads to limited colonization. In this study, an enzyme-triggered fuse-like microcapsule is constructed using alginate and protamine via the electrostatic droplet combined with the layer by layer self-assembly. The multilayer microcapsule can protect the probiotics in the stomach and disintegrate layer by layer under the catalysis of trypsin in the intestine. The formulation with two protamine layers showed the best protection for Escherichia coli MG1655 (EM) during the oral delivery; as well the minimal release at the gastric pH value but a burst release after 1 h at the intestinal pH value. In particular, the adhesion strength of EM is improved with the increase of the layer number. In vivo experiments demonstrate that the EM enters into the stationary phase within 12 h in the colon. Moreover, the blood biochemistry and histological analysis demonstrates the safety of the microcapsule formulation. It can be concluded that this microcapsule can help the probiotics survive during the delivery, then release and colonize in the colon.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Biomaterialia
·
2020
·
IF 7.242
Ying Wang,Xiaowen Xu,Xuan Zhao,Zongning Yin
Pathological thrombosis within a vessel hampers blood flow and is the mainspring of numerous fatal cardiovascular complications. In order to specifically image and dissolve a thrombus, we rationally designed a functionalized polymeric hybrid micelle (PHM) system self-assembled from amphiphilic polycaprolactone-polyethylenimine (PCL-PEI) and polycaprolactone-polyethylene glycol (PCL-PEG). Based on a biological component of thrombi, activated coagulation factor XIII (FXIIIa), which is responsible for fibrin crosslinking, we further developed FXIIIa-targeted near infrared imaging and thrombolytic nanoparticles , termed IR780/FPHM/LK NPs, through chemical conjugation of peptides to the system. In a ferric chloride (FeCl 3 )-induced mouse carotid thrombosis model, IR780/FPHM/LK NPs specifically targeted the thrombus and significantly enhanced the photoacoustic signal for an accurate diagnosis. When loaded with the fibrinolytic drug lumbrokinase (LK), FPHM remarkably dissociated the thrombus accompanied by an increase in the d -dimer level, a fibrin degradation product , and alleviation of fatal nonspecific hemorrhagic risk. Given its thrombus-specific imaging along with potent therapeutic activities, IR780/FPHM/LK NPs hold promise for developing nanotheranostic agents in preclinical thrombotic vascular disease models.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Heng Liu,Qiulin Li,Bing-Huan Zhang,Long-Cheng Zhang,Guo-Rong Hou,Maowen Xu,Shu-Juan Bao
Fe–N–C catalysts exhibit promising activity toward the catalytic oxygen reduction reaction (ORR). However, applicability of such catalysts is limited by serious oxidative corrosion via the Fenton reaction. In this feature work, we prepared manganese–nitrogen species by pyrolyzing a bimetal CdMn and P-phenylenediamine organic complex (CdMn–PPD) under different atmospheres for the first time. The experimental results suggest that the carbonized atmosphere deeply affects the graphitization degree, pore structure of carbon, and the formation of Mn–N active sites. Of the three prepared catalysts, Mn@NPC–NH3 exhibited the greatest Mn–N and pyridinic N content and delivered excellent ORR activity (Eonset: 0.95 V, E1/2: 0.83 V). Even more impressive, the Fenton reaction was substantially restrained by this catalyst. Overall, the Mn@NPC–NH3 offers superior stability to that of Fe–N–C catalysts, providing new insight for further explorations of excellent non-noble metal ORR catalysts.
✓ 已验证
产品关联
DOI
高影响因子
ONCOLOGY REPORTS
·
2020
·Vol. 44
·期 5
·2231-2240
·
IF 3.417
Jinhong Feng,Ting Zheng,Zhaohua Hou,Cui Lv,Anqi Xue,Tingting Han,Beibei Han,Xin Sun,Yunbo Wei
Estrogen receptor (ER)‑negative breast tumors are associated with low survival rates, which is related to their ability to grow and metastasize into distal organs. The aryl hydrocarbon receptor (AhR), a ligand‑activated transcription factor that is involved in several biological processes, is a promising anti‑metastatic target. Luteolin, a non‑toxic naturally occurring plant flavonoid with diverse biological activities, has been demonstrated to be effective against certain types of cancer, and has also been described as a ligand of AhR. In the present study, various cancer cell lines were first investigated following treatment with luteolin, and luteolin exhibited the lowest IC50 in MDA‑MB‑231 cells. Then, the efficiency of luteolin in suppressing the metastasis of ER‑negative breast cancer in vitro was assessed. MDA‑MB‑231 cells were treated with luteolin in vitro. Subsequently, MTT assay and flow cytometry were used to detect cell viability, the cell cycle and apoptosis, and a Transwell assay was used to evaluate cell invasion. In addition, reverse transcription‑semi‑quantitative PCR and western blot were performed to detect the mRNA and protein expression levels of matrix metalloproteinase (MMP)‑2 and MMP‑9. In addition, the number of surface tumor nodules was measured in vivo, in mice bearing B16‑F10 tumors, following treatment with luteolin. Luteolin inhibited the viability and induced the apoptosis of MDA‑MB‑231 cells, which was accompanied by cell cycle arrest. This was associated with a decrease in the expression of the pro‑metastatic markers C‑X‑C chemokine receptor type 4 (CXCR4), MMP‑2 and MMP‑9, which was reversed by AhR inhibition. Furthermore, it was identified that luteolin could inhibit the metastasis in a B16F10 mouse xenograft model, and the levels of MMP‑9, MMP‑2 and CXCR4 were significantly decreased in the lung tissues isolated from tumor‑bearing nude mice following luteolin treatment. In conclusion, luteolin is a potential molecule for inhibiting breast cancer invasion and metastasis, which could have promising clinical applications.
✓ 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）