ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 13
·19913-19917
·
IF 5.19
Zhang Jun,Zhong Shu-shu,Zhao Ke-meng,Liu Ze-hua,Dang Zhi,Liu Yu
Steroid arylsulfatase is an important enzyme in human, which plays an important role in dynamic equilibrium of natural estrogens. On the other hand, sulfite can be endogenously produced as a consequence of human body’s metabolism of sulfur-containing amino acids, while its main sources to human are mainly derived from food as it is a widely used additive. Sulfite-sensitivity is a well-known phenomenon to a small proportion of populations. However, its potential adverse effects on healthy individuals have been hardly reported. It was for the first time reported in this study that sulfite could effectively inhibit arylsulfatase, and its IC50 values for the snail- and human urine–derived arylsulfatase were determined to be 71.9 and 142.8 µM, which were lower than the concentration of sulfite in some healthy population. Consequently, it appears that sulfite might disrupt estrogen homeostasis in human, and this deserves further investigation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2022
·Vol. 13
·期 18
·16887-16898
·
IF 4.05
Wang Fei,Lai Jinhua,Liu Zixuan,Wen Sha,Liu Xianxiang
Spinel copper–manganese oxide catalysts were prepared via the co-precipitation method to be used for the catalytic selective oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA). Morphological characterization revealed that the primary particles of the as-synthesized catalysts were irregular nanoparticles aggregated with each other. The effects of reaction conditions such as time, temperature, and the dosage of oxidant on the catalytic activity were investigated. The experimental results show that the CuMn 2 O 4 showed superior catalytic performance in HMF selective oxidation reaction. In the presence of acetonitrile and tert-butyl hydroperoxide as oxidant, the catalytic reaction can achieve complete conversion of HMF, and the FDCA selectivity reached to 96.4%. The catalyst exhibited good recyclability and recoverability in a three-run recycling test. Mechanism studies reveal that Mn 3+ has a significant influence on the catalytic oxidation and the synergistic interaction between Mn and Cu can facilitate the mobility of oxygen thus improving the catalytic activity. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 8
·6043-6058
·
IF 2.779
Dong Xiyuan,Huang Xianqing,Wang Dongbo,Lei Ye,Han Juncheng,Liang Xiaofang,Wei Qianlan
Constructing homojunction is one of the effective methods to accelerate electron transport and enhance the photocatalytic performance of semiconductors. Here, we combined two carbon nitride, poly triazine imide (PTI) and graphitic carbon nitride (g-C 3 N 4 ), to form homojunction PTI/g-C 3 N 4 photocatalysts by molten salt method, using guanidine hydrochloride and melamine-cyanuric acid supramolecular self-assembled polymer as precursors, respectively, and LiCl–KCl mixture as reaction medium. The photocatalytic degradation rate of tetracycline hydrochloride (TC-HCl) with the prepared homojunction 2.0MG reached up to 68% and was significantly higher than that of the single component. The photocatalyst maintained outstanding stability after five cycles. The excellent performance was derived from the enhanced light absorption, increased specific surface area, efficient charge separation and stable optical performance of PTI/g-C 3 N 4 homojunction. Moreover, the needle-mushroom-like crystalline PTI were loaded on amorphous g-C 3 N 4 nanosheets or inserted between the nanosheets layers, which inhibited nanosheets stacking and was favorable for carrier transmission. The radicals trapping experiment revealed the dominant role of superoxide radicals for TC-HCl degradation. Finally, the possible photocatalytic mechanism of the PTI/g-C 3 N 4 homojunction was proposed. The transfer of photogenerated electrons and holes followed the "type II heterojunction" path between two carbon nitride components, which effectively accelerated carriers transfer and enhanced photocatalytic performance.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 40
·61446-61456
·
IF 5.19
Zhao Zheng-Yin,Xiong Jun,Wang Yuan,Cui Caixi
It is significant to explore the advanced oxidation process (AOP) for antibiotic degradation. Herein, a peroxymonosulfate (PMS) activator, Sr 2 FeO 4 /SBA-15 (SFS) heterogeneous catalyst, was synthesized by in situ growth of Sr 2 FeO 4 on the surface of SBA-15. In SFS/PMS catalytic system, Sr atom provided electrons to Fe(II) ↔Fe(III) ↔Fe(II) redox cycle through Sr-O-Fe bonds for PMS activation. The SFS catalyst could activate PMS to generate a free radical coexistence system, including sulfate radical (SO 4 ∙ − ) and hydroxyl radicals (∙OH). The catalyst possessed high catalytic activity and high stability. The degradation efficiency of sulfapyridine (SAD) over the SFS/PMS catalytic system could reach 99.0% after 90 min reaction. After the 5th reuse, the degradation efficiency of SAD was still more than 94.0%, and the phase structure of the catalyst did not alter. The low ion leaching concentration would be more conducive to reuse and avoiding secondary pollution, in comparison to homogeneous catalysts. This catalyst can be widely applied to organic wastewater treatment.-->
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 1
·271-284
·
IF 2.936
Faizan Muhammad,Zhang Ruirui,Liu Ruixia
Recently, global warming is proving to be an increasing challenge for the sustainable human survival on planet earth. Worldwide, researchers are putting their efforts into controlling carbon emissions and have set the aim to achieve levels of overall carbon neutrality. Different industrial processes, especially oil refinery processes, release large amounts of low-carbon alkanes as gaseous byproducts directly into the air and pollute clean environments, which is one of the major reasons for sudden climate changes, ocean acidification, loss of biodiversity, and rising sea levels. The conversion of lighter alkanes, especially n-butane, into value-added chemicals can be beneficial for green economies and green environments. Presently, heterogeneous vanadium phosphorus oxide catalysts (VPOs) are considered potential candidates for n-butane selective oxidation toward maleic anhydride (MA). In this research, we developed a VPO catalyst with the assistance of copper-based ionic liquids (Cu-ILs), including [Bmim][OAc]–[Cu(OAc) 2 ], [Bmim][Cl]–[CuCl], and [Bmim][Cl]–[CuCl 2 ]. We observed significant improvement in the MA selectivity; meanwhile, the CO x (CO and CO 2 ) selectivity was decreased. Compared to the unpromoted catalyst (Blank-VPO), the Cu-IL-promoted catalyst, i.e., [Bmim][Cl]–[CuCl 2 ]-VPO remarkably increased the MA selectivity (11%) and n-butane conversion (9.2%) and minimized the CO x selectivity (11%). In addition to this the ratio of CO/CO 2 has been reduced from 2.01 to 1.32. Therefore, this can be a helpful process for achieving carbon neutrality goals. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 3
·1-8
·
IF 6.408
Jin Yuting,Yan Rongfang,Wang Shuo,Wang Xianghong,Zhang Xuemei,Tang Yiwei
A novel fluorescence platform was fabricated for enrofloxacin determination by using cDNA-modified dipeptide fluorescence nanoparticles (FDNP-cDNA) and aptamer-modified magnetic Fe 3 O 4 nanoparticles (Fe 3 O 4 -Apt). The FDNP were prepared via tryptophan-phenylalanine self-assembling. When magnetic Fe 3 O 4 -Apt incubated with standard solution or sample extracts, the target enrofloxacin was selectively captured by the aptamer on the surface of the Fe 3 O 4 nanoparticles. After removing interference by washing with phosphate-buffered saline, the FDNP-cDNA was added, which can bind to the aptamer on the surface of the Fe 3 O 4 nanoparticles not occupied by the analyte. The higher the concentration of the target enrofloxacin in the standard or sample solution is, the less the FDNP-cDNA can be bound with the Fe 3 O 4 nanoparticles, and the more the FDNP-cDNA can be observed in the supernatant. Fluorescence intensity (E x /E m = 310/380 nm) increased linearly in the enrofloxacin concentration range 0.70 to 10.0 ng/mL with a detection limit of 0.26 ng/mL (S/N = 3). Good recoveries (88.17–99.30%) were obtained in spiked lake water, chicken, and eel samples with relative standard deviation of 2.7–6.2% ( n = 3). Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 3
·1-9
·
IF 6.408
Gao Huanli,Xu Tingting,Zhou Jiahuan,Rojas Orlando J.,He Ming,Ji Xingxiang,Dai Hongqi
A system for the rapid and ultra-sensitive detection of Staphylococcus aureus ( S. aureus ), a prevalent foodborne pathogen is introduced. Limitations of typical electrochemical sensing, often subjected to interference from non-specific protein adsorption are addressed. A dual-aptamer-based sandwich immunobiosensor is shown for its benefits regarding specificity and anti-fouling capacity, endowed by a sulfonated polyaniline layer combined with signal amplification via highly conductive gold nanoparticles. EIS spectra (Nyquist plots) were recorded at pH 7.4 PBS containing 5 mM Fe(CN) 6 3− /Fe(CN) 6 4− , in order to verify the possibility of the electrochemical sensing for detection of S. aureus. Results demonstrated that the constructed immunobiosensor presents an extended detection range (1 × 10 1 to 1 × 10 5 CFU/mL) and detection limit as low as 2 CFU/mL. The resistance values of the immunobiosensor developed maintain at a stable value during 2 weeks. Besides, the specificity of the system is highlighted by testing raw milk, and the results of which demonstrate the excellent prospects of the system for monitoring foodborne pathogens. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 29
·44732-44745
·
IF 5.19
Wang Zhijie,Bao Jianguo,Du Jiangkun,Luo Liting,Xiao Guangfeng,Zhou Ting
Pollutant degradation via periodate ( \({\text{IO}}_{4}^{-}\) ) and transitional metal oxides provides an economical, energy-efficient way for chemical oxidation process in environmental remediation. However, catalytic activation of periodate by manganese dioxide and the associated mechanism were barely investigated. In this study, four MnO 2 polymorphs (α-, β-, γ- and δ-MnO 2 ) were synthesized and tested to activate \({\text{IO}}_{4}^{-}\) for the degradation of sulfamethoxazole (SMX). The reactivity of different MnO 2 structures followed the order of α-MnO 2 > β-MnO 2 > γ-MnO 2 > δ-MnO 2 , suggesting that the particular crystalline structure in α-MnO 2 would exhibit higher activities via \({\text{IO}}_{4}^{-}\) activation. Herein, in α-MnO 2 / \({\text{IO}}_{4}^{-}\) system, 91.1% of SMX was eliminated within 30 min with degradation rate constant of 0.0649 min −1 , and the neutral pH exhibited higher efficiency in SMX degradation compared with acidic and alkaline conditions. Singlet oxygen ( 1 O 2 ) was unveiled to be the dominant ROS according to the results of electron paramagnetic resonance, chemical probes and radical quenching experiments, whereas \({\mathrm{O}}_{2}^{\bullet -}\) and • OH were mainly acted as a free-radical precursor. Six oxidation products were identified by LC–MS, and the elimination of sulfonamide bond, hydroxylation and direct oxidation were found to be the important oxidation pathways. The study dedicates to the mechanistic study into periodate activation over alpha-MnO 2 and provides a novel catalytic activation for selective removal in aqueous contaminants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 5
·1-11
·
IF 3.061
Jing Lian Peng,Yang Fa Rong,Gu Li Li,Li Guo Dong,Li Zeng Liang,Tang Xu Yu,Shi Jun Li
In this paper, computer simulation technology was used to design the pre-polymerization system of Tebuconazole Molecularly Imprinted Polymer (TBZ-MIPs). The simulation results illustrated that the best functional monomer was MAA, the polymerization solvent was acetonitrile, and the ratio of TBZ to MAA was 1:3. Thermodynamic analysis showed that the self-assembly process of TBZ-MAA was a non-spontaneous endothermic reaction, and the appropriate pre-polymerization temperature was 30 ℃. Based on the computer simulation results, the TBZ-MIPs nanospheres were prepared by precipitation polymerization with TBZ as template molecule, MAA as functional monomer, EGDMA as crosslinking agent, AIBN as initiator, and acetonitrile as solvent. The nanospheres had a uniform particle size, and the average diameter was 188.83 nm. Adsorption experiments indicated that the TBZ-MIPs had good specific adsorption capacity for TBZ and its structural analogs, the maximum dynamic adsorption capacity could reach to 1.8 mg/g in 60 min. Further, the TBZ-MIPs nanospheres were used as the filler of the solid phase extraction tube to pretreat the tobacco samples, and the method of TBZ-MISPE-UHPLC-MS/MS was established to detect trace tebuconazole, myclobutanil and triadimenol in tobacco leaves simultaneously. Their average recovery rates and RSD were 70.5% ~ 110.17%, and 0.78% ~ 12.71% (n = 3) respectively, which realized trace detection of triazole fungicides in tobacco leaves.
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2022
·Vol. 23
·期 4
·944-953
·
IF 2.347
Xu Qingbo,Ying Lili,Wang Xinyu,Zhang YanYan,Wang Peng
Cotton fabric is easy to breed bacteria due to its porous structure and easy wettability, resulting in poor quality of cotton fabric and harm to human health. In order to prepare antibacterial and antifouling cotton fabric, the present work developed a new strategy. The acryloyl chloride (AC) was covalently linked to the surface of cotton fabric by nucleophilic substitution reaction, leading the surface of fabric to have the C=C bonds. Then, the C=C bonds on the treated fabric surface were polymerized with the allyltrimethylammonium chloride (ATAC) via mist polymerization technology, thus making the poly(allyltrimethylammonium chloride) (PTAC) was grafted onto the cotton fabric via grafting through method. As a result, the finished fabric showed excellent antibacterial effect against E. coli and S. aureus , with the bacterial reduction (BR) rates were higher than 99.0 %. Moreover, even after 50 laundering cycles, the BR rates of treated fabric against E. coli and S. aureus were also remained 95.8 %, exhibiting excellent durability. The finished cotton fabric was also showed outstanding antifouling for both bacterial and protein. The antibacterial and antifouling cotton fabric prepared by mist polymerization technology and grafting through method has a great potential application in the household and consumer textiles.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 8
·3209-3217
·
IF 4.705
Han Xiaolong,Jin Yujuan,Huang Jian,Tian Huafeng,Guo Maolin
Hyperbranched polymer with flexible long chains (Ɛ-CL) were synthesized based on hydroxyl terminated hyperbranched polyesters (HBPEs). The prepared HBP-CLs were used to toughen poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by melt-blending. Comparing with pure PHBV, the crystallinity (X c ) of the PHBV/3.0phr HBP-CLs blends decreased by 10.2% (from 67.8 to 60.9%), the impact strength increased by 533.3% (from 5.1 kJ·m − 2 to 32.3 kJ·m − 2 ), and the elongation at break increased by 160.5% (from 1.62 to 4.22%). With the increase of HBP-CLs, the fracture surface of the PHBV/HBP-CLs blends became rough and a significant decrease in crystallization area can be seen from POM images. Even filamentous structures and tiny holes was formed, which further demonstrated that HBP-CLs acted as an excellent toughening effect on PHBV.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Yao Jie,He Yingluo,Zeng Yan,Feng Xiaobo,Fan Jiaqi,Komiyama Shoya,Yong Xiaojing,Zhang Wei,Zhao Tiejian,Guo Zhongshan,Peng Xiaobo,Yang Guohui,Tsubaki Noritatsu
Reduction process is a key step to fabricate metal-zeolite catalysts in catalytic synthesis. However, because of the strong interaction force, metal oxides in zeolites are very difficult to be reduced. Existing reduction technologies are always energy-intensive, and inevitably cause the agglomeration of metallic particles in metal-zeolite catalysts or destroy zeolite structure in severe cases. Herein, we disclose that zeolites after ion exchange of ammonium have an interesting and unexpected self-reducing feature. It can accurately control the reduction of metal-zeolite catalysts, via in situ ammonia production from ‘ammonia pools’, meanwhile, restrains the growth of the size of metals. Such new and reliable ammonia pool effect is not influenced by topological structures of zeolites, and works well on reducible metals. The ammonia pool effect is ultimately attributed to an atmosphere-confined self-regulation mechanism. This methodology will significantly promote the fabrication for metal-zeolite catalysts, and further facilitate design and development of low-cost and high-activity catalysts.
✓ 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）