ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 59
·88882-88893
·
IF 5.19
Wang Yinghui,Chen Yuantao,Zhao Meng,Zhang Lili,Zhou Changyou,Wang Haiyang
Radioactive iodine in nuclear waste is increasingly harmful to the human body and the environment because of its strong radioactivity, high fluidity, easy solubility in water, and long half-life. It is very important to find clean and economical materials to recover and fix radioactive iodine. In this paper, the amino-metal-organic framework was covalently modified to obtain composite materials to improve the recycling of iodine in the environment. These adsorbents are used to adsorb iodine in water, showing outstanding adsorption performance. The adsorption data are in good agreement with the Langmuir isothermal adsorption model and pseudo-second-order kinetic model, indicating that the adsorption process is mainly monolayer adsorption and chemical adsorption. The two materials showed selective adsorption capacity for iodine in the solution containing multiple competing ions. The adsorption capacity of the covalently modified composite increased from 949.52 to 2157.44 mg/g. Compared with the amino-metal-organic framework, the modified composite contains more electron-rich groups as active sites, and forms charge transfer compounds with iodine to realize chemical adsorption. Through the simulated adsorption of ultra-high-pressure micro-jet, the material has certain working ability under high pressure, which provides a theoretical basis for the future recovery and utilization of iodine under high pressure. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Kairong Yang,Pei Jia,Jinjie Hou,Shuang Zhao,Li Wang
To achieve facile and rapid detection of tetracyclines (TCs), herein, we fabricated an ingenious turn-on ratiometric fluorescence sensor (Ru@ZIF-8) based on embedding red-emitting Ru(bpy) 3 2+ into zeolitic imidazolate framework-8 (ZIF-8). With the introduction of TCs, Ru@ZIF-8 system held the impervious red fluorescence, and generated green fluorescence which originated from the interaction between ZIF-8 and TCs, thereby achieving ratiometric fluorescence strategy through turn-on response signal and stable reference signal. Moreover, the ratiometric response accompanied discernible color change from red to green-yellow, which facilitated detection by naked eyes. The developed sensor exhibited prominent specificity and sensitivity, with detection limits of 2.4, 4.2, 1.6 and 7.2 nM for tetracycline, chlortetracycline , oxytetracycline and doxycycline , respectively. In addition, the satisfactory recoveries were obtained during detecting TCs in drink water, milk and beef, and the test paper-based sensor was successfully applied in real-time visual detection of TCs. All results indicated the feasibility and potential application of Ru@ZIF-8.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
·
2022
·Vol. 12
·期 7
·513
·
IF 5.743
Xingyue Chen,Lulan Yang,Jiaming Tang,Xu Wen,Xiaoling Zheng,Lingling Chen,Jiaqi Li,Yong Xie,Tao Le
Herein, we developed a novel truncation technique for aptamer sequences to fabricate highly sensitive aptasensors based on molecular docking and molecular dynamics simulations. The binding mechanism and energy composition of the aptamer/sulfaquinoxaline (SQX) complexes were investigated. We successfully obtained a new SQX-specific aptamer (SBA28-1: CCCTAGGGG) with high affinity (Kd= 27.36 nM) and high specificity determined using graphene oxide. This aptamer has a unique stem-loop structure that can bind to SQX. Then, we fabricated a fluorescence aptasensor based on SBA28-1, gold nanoparticles (AuNPs), and rhodamine B (RhoB) that presented a good linear range of 1.25–160 ng/mL and a limit of detection of 1.04 ng/mL. When used to analyze water samples, the aptasensor presented acceptable recovery rates of 93.1–100.1% and coefficients of variation (CVs) of 2.2–10.2%. In conclusion, the fluorescence aptasensor can accurately and sensitively detect SQX in water samples and has good application prospects.Keywords:molecular docking;molecular dynamics simulations;aptamer truncation;fluorescence aptasensor;gold nanoparticles
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yan Wang,Tao Yang,Jing Chen,Shaobin Wen,Die Li,Bingyu Wang,Qiang Zhang
A novel ferrocene-based nanofiltration membrane is prepared to combine filtration and photo-Fenton reaction for water treatment. Membranes containing ferrocene groups are successfully fabricated via an integration of layer-by-layer interfacial polymerization and ion exchange reaction. Rejection performance towards bisphenol S (BPS) increases with the growth of the interfacial polymerization layer, and the optimal membrane shows the highest rejection rate of 98.1%. For the optimal photo-Fenton system with H 2 O 2 , UV and ferrocene-based membrane (PS/HTCC-3/FcSO 3 ), the degradation rate of k is 0.092 min −1 , which is 1.8 times higher than that of the system with only H 2 O 2 and UV. Meanwhile, the salinity of BPS in the optimal system is 2 times higher than that of the system with H 2 O 2 and UV. After the heterogeneous photo-Fenton process, PS/HTCC-3/FcSO 3 can reject 65.6% of the BPS degradation by-products based on the variation of total organic carbon (TOC). In addition, quenching experiments prove that ·OH is the primary active radical, and the yield of ·OH in the optimal system is the highest compared with the system with H 2 O 2 and UV. The outstanding performance of ferrocene-based membrane demonstrates its potential for micropollutants treatment.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Xu Zhang,Bowen Tan,Yanting Wu,Min Zhang,Xi Xie,Jinfeng Liao
Hydrogels can mimic extracellular matrix and provide a suitable microenvironment for accelerating wound healing. Nevertheless, the complicated wound condition, the disturbance of external forces, and the manufacturing process of the dressing were still difficult problems. An injectable self-healing hydrogel with mild photothermal therapy (MPTT) was developed for wound healing via dynamic Schiff bonds. After covalently incorporating GO-BPEI (branched polyethyleneimine grafting graphene oxide), an observable mechanical strength improvement and photothermal conversion property of GO-BPEI/carboxymethylated chitosan (CMCS) /aldehyde terminated polyethylene glycol (PEG-CHO) (GCP) hydrogel has been witnessed. MPTT induced by near-infrared (NIR) irradiation could accelerate NIH-3 T3 cells proliferation in vitro . Moreover, in vivo wound defect healing and histological analysis suggested that GCP hydrogels incorporated with MPTT significantly accelerated wound healing by improving collagen fibers deposition, enhancing re-epithelialization, and promoting granulation tissue neogenesis. The GCP hydrogels provide a unique route for wound dressing and present new inspirations for complicated wound management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMATERIALS
·
2022
·
IF 15.304
Xiaoxue Ge,Meng Gao,Bairong He,Nannan Cao,Kerun Li,Yong Liu,Sanmei Tang,Kai Liu,Jing Zhang,Fang Hu,Lei Zheng,Bo Situ
The increasing resistance among fungi to antimicrobials are posing global threats to health. Early treatment with appropriate antifungal drugs guided by the antifungal susceptibility testing (AFST) can dramatically reduce the mortality of severe fungal infections. However, the long test time (24–48 h) of the standard AFSTs cannot provide timely results due to the slow growth of the pathogen. Herein, we report a new AFST that is independent of growth rate analysis using a luminogen with aggregation-induced emission characteristics (AIEgen) named DMASP. DMASP is a water-soluble small-molecule probe that can readily penetrate the dense fungal cell wall . Based on its mitochondria-targeting ability and AIE characteristics, fungal activity can be dynamically indicated via real-time fluorescence monitoring. This allows fungal susceptibility to various antimicrobials to be assessed within 12 h in a wash-free, one-step manner. This method may serve as a promising tool to rapidly detect possible drug-resistant fungal strain and guide the precise use of antimicrobial against fungal diseases.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2022
·Vol. 12
·期 8
·901
·
IF 4.501
Huaigang Su,Ze Zong,Wenjing Lou,Qin Zhao,Xiaobo Wang,Xiang Feng,Yanxing Qi,Zhaoning Song
In this study, Zr active species were implanted into a ZSM-5 zeolite framework to form a solid acid catalyst through steam treatment and the liquid-solid isomorphous substitution process. The as-synthesized Zr-ZSM-5-st catalyst ensured excellent esterification of trimethylolpropane and fatty acids (FAs) to achieve a polyol ester production yield of 94.41%. Combined with N2physisorption, X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, transmission electron microscopy mapping, X-ray photoelectron spectroscopy, NH3temperature-programmed desorption, and inductively coupled mass plasma spectroscopy were conducted. The results revealed that the excellent performance of Zr-ZSM-5-st catalyst could be attributed to the enhanced acidity and the developed surface area and pore structure.Keywords:Zr-containing solid acid catalyst;ZSM-5 zeolite;polyol ester;esterification;lubricating ester oils
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 24
·19331-19343
·
IF 2.779
Li Weiyin,Zhao Tongtong,Ding Lingling
Au@BSA was prepared at pH 8, pH 9, pH 10, pH 11, pH 11.4, and pH 12 as the working electrode of the non-enzymatic glucose sensor by biological template method. The six kinds of gold-cluster film working electrodes sintered by Au@BSA show golden color, especially the golden films corresponding to pH 8 and pH 12 are obvious. The gold-cluster films at pH 8, pH 9, pH 10, and pH 11 showed mono-layer gold nanoparticles, while the gold-cluster film at pH 11.4 showed porous structure. The gold-cluster film prepared at pH 12 presents a multi-layer 3D structure composed of a large number of gold nanoparticles. The linear detection range of the non-enzymatic glucose sensor prepared at pH 8 is the widest among the six sensors, and its sensitivity is also better than the other four sensors except the sensor prepared at pH 12. The sensor with the gold-cluster film-modified working electrode prepared at pH 12 show the highest sensitivity (330.002 μA mM −1 cm −2 ), because multi-layer 3D structure can bring more electric catalytic active site for this sensor. The electrochemical impedance spectroscopy showed that the specific surface area of the sensor prepared at pH 12 was much larger than that of the other five sensors. We provide a pH cycling method for once shaping preparation that can be extended to other metal films or metal-oxide films electrochemical interfaces. The Au@BSA non-enzymatic glucose sensor prepared in this paper is stable and can resist the toxicity of excessive chloride ions without losing activity.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 13
·2287
·
IF 5.719
Jiabei Wang,Hong Zhang,Wenjing Hu,Jiusheng Li
Nanomaterials exhibit intriguing tribological performance and have received particular attention in the lubrication field. However, little research has been found that surveyed the application of nanometer Ni in lithium grease. In this study, nanometer Ni with an average size of 100 nm was synthesized by the direct reduction method and dispersed in lithium grease. The feasibility of nanometer Ni as a grease additive in different lubrication scenarios was evaluated by a four-ball friction tester and a TE77 reciprocating friction tester. The lubrication mechanism was analyzed based on the evaluated physical properties of lithium grease and the characterization of the wear surface. The tribology test results showed the tribological properties of lithium grease were enhanced after introducing nanometer Ni. When the dosage was 0.2 wt%, the friction-reducing and anti-wear properties of point-to-point contact increased by 34.8% and 35.2%, respectively, while those of the point-to-flat contact increased by 28.8% and 38.7%, respectively. Our work not only provides theoretical guidance and practical reference for the utilization of nanometer Ni in grease, but also explains several possible lubrication mechanisms of nanomaterials in grease.Keywords:nano-lubrication;lithium grease;additives;nanometer Ni;tribological performance
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
·
2022
·
IF 7.419
Chenchen Wang,Hao Lu,Xiaodan Li,Yongwei Zhu,Yueyue Ji,Wenjia Lu,Gaoyan Wang,Wenqi Dong,Manli Liu,Xiangru Wang,Huanchun Chen,Chen Tan
The persistent incidence of high levels of multidrug-resistant (MDR) bacteria seriously endangers global public health. In response to MDR-associated infections, new antibacterial drugs and strategies are particularly needed. Screening to evaluate a potential compound to reverse antibiotic resistance is a good strategy to alleviate this crisis. In this paper, using high-throughput screening methods, we identified that oxyclozanide potentiated tetracycline antibiotics act against MDR bacterial pathogens by promoting intracellular accumulation of tetracycline in resistant bacteria. Furthermore, mechanistic studies demonstrated that oxyclozanide could directly kill bacteria by disrupting bacterial membrane and inducing the overproduction of bacterial reactive oxygen species. Oxyclozanide effectively reduced the production of virulence proteins in S. aureus and neutralized the produced α-hemolysin, thereby effectively alleviating the inflammatory response caused by bacteria. Finally, oxyclozanide significantly reversed tetracycline resistance in animal infection assays. In summary, these results demonstrated the capacity of oxyclozanide as a novel antibiotic adjuvant, antibacterial and anti-virulence multifunctional compound to circumvent MDR bacteria and improve the therapeutic effect of persistent infections caused by MDR bacteria worldwide.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 29
·15698-15707
·
IF 14.511
Yuan Hu,Yuan-Yuan Yue,Chan Wang,Hai-Bo Zhu,S. Ted Oyama,Xiao-Jun Bao
Hierarchical zeolites show great promise in green chemical and petrochemical processes, but their syntheses usually involve the use of nitrogen-/halogen-containing templates whose removal from the as-synthesized zeolites via calcination inevitably leads to serious environmental pollution, high energy consumption and sometimes destruction of zeolite frameworks. We report an eco-friendly and acid-degradable polymer denoted as PK3 as a multifunctional template to synthesize single-crystal hierarchical zeolites. It is shown that by strongly interacting with zeolite aluminosilicate gel precursors, PK3 acts as a structure-directing agent for the nucleation and crystallization of the amorphous gel into protozeolite crystals, and via its adsorption on the surfaces of protozeolite crystals, PK3 greatly inhibits their growth and thereby results in the formation of zeolitic nanocrystals. Furthermore, these thermodynamically unstable nanocrystals encapsulating PK3 spontaneously aggregate, then align in an oriented manner, and at last ripen, leading to the formation of single-crystal zeolite particles with interconnected mesopores. Importantly, the removal of PK3 from the as-synthesized zeolites can be achieved by a simple acid treatment. Thanks to these unique characteristics of PK3, a nitrogen-/halogen-free and combustion-free route is successfully achieved for synthesizing hierarchical MFI, MOR and GME zeolites. Moreover, the synthesized MFI zeolite exhibits superior catalytic activity in cracking low-density polyethylene.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Sha Yan,Wenqian Wang,Wen Zhao,Wenli Tian,Xuan Wang,Liming Wu,Xiaofeng Xue
Mature honeys that brew naturally in the hive develop distinct bioactive components, and thus carry a higher premium due to their superior quality. However, how to identify mature honeys remains difficult. Trace oligosaccharides are a likely source of biomarkers to indicate maturity. Here, we profiled trace oligosaccharides in acacia honey by GC–MS and used a metabolomics strategy to screen oligosaccharides that distinguish honeys with different maturities. Turanose content increased gradually in acacia honey samples and was closely related to the days stored in the hive ( p < 0.05). To accurately quantify turanose, a UPLC-ELSD method was developed. Using the established method, honeys with ≥1.20 g/100 g of turanose could be classified as mature acacia honey. Based on the preliminary study, 500 commercial acacia honeys were analyzed, and only 77.2 % of these samples had a satisfactory level of turanose. This work offers a potential method to evaluate the quality of honeys.
✓ 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）