JOURNAL OF APPLIED MICROBIOLOGY
·
2016
·Vol. 121
·期 6
·1616-1626
·
IF 2.156
Huang X.,Shi J.,Cui C.,Yin H.,Zhang R.,Ma X.,Zhang X.
AimsWe aimed to investigate the phenanthrene degradation characteristics and possible phenanthrene degradation pathways of Rhizobium petrolearium SL‐1.Methods and ResultsUsing high‐performance liquid chromatography (HPLC), UV‐visible and gas chromatography‐mass spectrometry (GC‐MS) analysis, the phenanthrene‐degrading properties and metabolites of Rh. petrolearium SL‐1 were analysed, and then combined with genome‐based analysis to elucidate the possible biodegradation pathway of phenanthrene in Rh. petrolearium SL‐1. The results of the analyses showed that phenanthrene (100 mg l−1) was completely degraded by strain SL‐1 at 35°C, 0·02% salinity and pH 9·0 within 3 days. A wide range of polycyclic aromatic hydrocarbons, including naphthalene, fluorene, anthracene and pyrene, could also be degraded by this strain.ConclusionsBased on the identified metabolites, the utilization of probable intermediates and the presence of putative phenanthrene catabolic genes, we concluded that phenanthrene was degraded via two different routes, namely the ‘naphthalene’ and the ‘phthalic acid’ routes.Significance and Impact of the StudyFor the first time, this study shows the degradation pathway of phenanthrene by a Rhizobium strain. Because of its excellent stress resistance, metabolic versatility, high degradation efficiency and potential application in phytoremediation, Rh. petrolearium SL‐1 is a potential candidate for the bioremediation of polycyclic aromatic hydrocarbons‐contaminated areas.
研究领域:
环境微生物学
·
分子生物学
·
生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Jiao Yan,Zhenzhen Li,Chengye Yang,Ke Xu,Ying Tang
A novel gel-templated strategy, featuring the unique employment of cationic worm-like micelles as a 3D gel template, was developed to fabricate hierarchically porous MgFe-layered double hydroxide (BTAC-MgFe-LDH) monoliths with ultra-high adsorption capacity toward sulfonated lignite (SL). Specifically, behentrimonium chloride (BTAC) and sodium salicylate self-organize into such cationic worm-like micelles, which serve as a 3D gel scaffold to mediate the co-precipitation of metal ions. After subsequent removal of this gel network, interconnected meso- and macropores (5–80 nm) are formed-these pores boost the specific surface area to 103.93 m² g⁻¹ (over double that of conventional LDH) and the pore volume to 0.63 cm³ g⁻¹ (four times higher than conventional LDH). For the resulting monolithic gel-derived adsorbent, 97.1% SL removal is achieved within 20 min at pH 3 and 25°C; its adsorption follows pseudo-second-order kinetics, with a Langmuir maximum capacity of 64.93 mg g⁻¹ (experimental result: 92.1 mg g⁻¹). Thermodynamic parameters (ΔH = - 21.08 J mol −1 ; ΔS = - 44.61 J mol −1 k −1 ) confirm spontaneous, exothermic adsorption dominated by electrostatic interactions and interlayer anion exchange. The BTAC-MgFe-LDH still retains over 64% of its capacity after five cycles, this result confirms that the gel-based approach provides a scalable, eco-friendly route to fabricate robust monolithic materials, which are effective at removing macromolecular organic pollutants from oilfield wastewater.
研究领域:
环境科学
·
材料化学
·
吸附技术
·
废水处理
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2017
·
IF 3.012
Hongming Zhou,Demin Xiao,Chengjie Yin,Zhaohui Yang,Kaiwen Xiao,Jian Li
The electrolytes based on lithium difluoro(oxalate)borate (LiODFB) and sulfolane (SL) including LiODFB-ethylene carbonate (EC)/dimethyl carbonate (DMC) and LiPF 6 -EC/DMC as the references have been studied on electrochemical performance and interfacial stability in Li/LiNi 0.5 Mn 1.5 O 4 cells. LiODFB-containing electrolytes show outstanding electrochemical stability within 5.5 V due to the passivation phenomenon on the cathodes, while LiPF 6 -containing electrolytes undergo continuous decomposition beyond 4.5 V. The initial charge/discharge profiles and cyclic voltammetry (CV) curves prove that the cell with LiODFB-SL/DMC(2:1 by vol.) electrolyte has lower degree of polarization and better reversibility. The cathode with LiODFB-SL/DMC(2:1 by vol.) electrolyte displays the best cycling performance and the cathode with LiPF 6 -EC/DMC(1:1 by vol.) electrolyte displays the worst cycling performance. AC impedance shows that the cell cycling with LiODFB-SL/DMC(2:1 by vol.) electrolyte has much smaller resistance of charge transfer on cathode/electrolyte interface than the cell cycling with LiODFB-EC/DMC(1:1 by vol.) electrolyte. The characterization of the cathode surfaces indicates that a more homogeneous and compact passivation layer forms on the cathode cycling with LiODFB-SL/DMC(2:1 by vol.) electrolyte to greatly improve the interfacial stability for the reason that SL motivates the passivation reaction of LiODFB and itself participates the formation of the passivation layers. Therefore, LiODFB-SL/DMC(2:1 by vol.) is a promising electrolyte for LiNi 0.5 Mn 1.5 O 4 cathode.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yi Wang,Huanhuan Guo,Xiaohan Xing,Can Wang,Xuefeng Zhang,Xiumin Li,Fengfeng Gao,Xiaogang Hao
A lithium aluminum iron layered double hydroxides/multiwalled carbon nanotubes/quaternized chitosan (LiAlFe-LDHs/MWCNTs/QCS) composite membrane with lithium-ion vacancies (Li + -trap) was fabricated through vacuum filtration method and pre-desorption process. The Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane had been developed for the selective extraction of Li + within the ship lock-type ion selective permeability (SL-ISP) system. In the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane, the Li + -trap within LiAlFe-LDHs was pivotal for achieving selective Li + extraction. This selectivity was realized through the cyclic intercalation of Li + into the Li + -trap sites within the interlayer structure of LiAlFe-LDHs, a process that also facilitates the permeation of Cl - . The interference of impurity ions was further eliminated by the SL-ISP system, thus facilitating the selective extraction of Li + . Upon investigation, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane was found to achieve a Li + flux of 0.055 mol·m −2 ·h −1 and a separation factor of 8.3 at an equimolar concentration ( C Mg, Li = 0.05 M) within the SL-ISP system. Additionally, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane demonstrated excellent separation performance in simulated brine, with a calculated Li + permeation flux of 0.053 mol·m −2 ·h −1 . The separation factors of Li + /Mg 2+ , Li + /K + , Li + /Na + and Li + /Ca 2+ reached values of 91.84, 69.75, 81.51 and 17.99, respectively. Therefore, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane could be effectively applied in the SL-ISP system for the selective extraction of Li + .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 23
·13830-13837
·
IF 3.119
Ruifen Peng,Yuxia Pang,Xueqing Qiu,Yong Qian,Mingsong Zhou
In the formulation of pesticide Suspension Concentrate (SC), some photosensitive pesticides are easily decomposed in the preparation. In this study, a hindered amine modified lignosulfonate (SL-Temp) with anti-photolysis function was synthesized using 4-amino-2,2,6,6-tetramethylpiperidine (Temp) and Sodium Lignosulfonate (SL) to solve this problem. The obtained SL-Temp was used as a dispersant to prepare 5% SC of avermectin, which shows good physical stability. The decomposition rate of the avermectin in SC after accelerating hot storage is 0%, which is much lower than 6.1% when SL was used as the dispersant. After being exposed to UV irradiation for 60 hours, the highest retention rate of avermectin is 87.1% when SL-Temp was used as the dispersant, which is much higher than 73.6% when SL was used as the dispersant, and also higher than 76.3% when a small molecule antioxidant (BHT) was added to the formulation. QCM-D studies revealed that the SL-Temp adsorption layer on avermectin particles can compete to absorb partial ultraviolet rays, hinder the penetration of ultraviolet light, and scavenge the free radicals produced by photooxidation, so as to protect avermectin from degradation.
研究领域:
农药科学
·
材料化学
✓ 已验证
DOI
高影响因子
Sensor Letters
·
2016
·Vol. 14
·期 11
·1067-1073
·
IF 0
Wu Wenwen,Wang Sui
In this work, we reported a luminol electrochemiluminescence (ECL) sensor using a composite material compounded by ZnO nanoparticles and reduced graphene oxide (ZnO/RGO) as electrode membrane and in situ generated hydrogen peroxide as coreactant. The composite material was characterized
by fourier transform infrared spectroscopy analysis (FTIR) and X-Ray powder diffraction (XRD). Then this ZnO/RGO modified electrode was used to determine tetracaine hydrochloride (TA· HCl). Results show that the inhibition of ECL intensity increased with logarithm of TA · HCl
concentration within a linear range from 10–4
μg/mL to 10–2
μg/mL and the detection limit (S/N) was 3.3 × 10–5
μg/mL. In addition, the recoveries of real samples were 85.0%–104.0% (urine),
95.0%–127.4% (serum) and 87.0%–104.6% (raw material drug) respectively, demonstrating an acceptable reproducibility of this method.
研究领域:
分析化学
·
药物分析
✓ 已验证
DOI
Sensor Letters
·
2017
·Vol. 15
·期 8
·682-689
·
IF 0
Li Yueqi,Hu Jingfang,Zou Xiaoping,GuoweiGao
In this paper, a simple and highly sensitive sensing interface of graphene film for hexavalent chromium (Cr(VI)) determination has been prepared by controllable electrochemical deposition on the gold electrode surface. The graphene film was obtained by direct electroreduction of graphene
oxide (GO) in suspension solution. The investigations on deposition parameters of this controllable preparation, such as potential and deposition time, were carried out by the potentiostatic method to study the effects of them on the graphene film. The fabrication process and electrochemical
properties of graphene film were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM) and electrochemical techniques, respectively. The conditional parameters, including detection potential, the concentration of supporting electrolyte and pH, were optimized
for Cr(VI) analysis. Without preconcentration, chronoamperometry method was used for Cr(VI) fast detection. Under the optimized conditions, the graphene film modified electrode provided a fast detection process, a wide linear range from 5 μg/L to 2000 μg/L, and a low detection
limit of 0.5 μg/L (S/N ≥ 3). Also, the developed graphene film showed a good stability and anti-interference for Cr(VI) determination. The reported work holds promise for practical application due to its simple, fast, environment-friendly and economical natures.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
Sensor Letters
·
2016
·Vol. 14
·期 9
·859-863
·
IF 0
Ding Yu,Li Yibin,Wu Huimin,Wang Shengfu,Xia Qinghua
20 wt% PtFe/C catalysts were prepared by a chemical reduction method at high temperature. The catalysts were characterized by X-ray diffraction, transmission electron microscopy, and electrochemical testing. The sensor based on PtFe/C showed a detection limit of 0.03 mM and high
sensitivity with linear range from 0.1 mM to 13.5 mM. The sensor still had high selection for glucose in the presence of commonly interfering species, such as ascorbic acid, acetamidophenol, and uric acid. The as-prepared glucose sensor has good anti-interference performance.
研究领域:
材料科学
·
电化学
·
生物传感
✓ 已验证
DOI
Sensor Letters
·
2016
·Vol. 14
·期 4
·369-375
·
IF 0
Youwang Hu,Chengzhi Xu,Ji'an Duan,Jiwen Xiang,Shu Wang,Xiaoyan Sun
Surface Acoustic Wave (SAW) sensors have received great attention because of their compact design and excellent sensing performance, including high sensitivity, low detection limits. However, SAW sensors generally suffer from low quality of the solid thin films which has a significant
effect to the detection performance of the sensors. To solve this problem, three different methods (spin coating, drop coating and spray coating) for fabricating thin films have been investigated for gaseous nitrogen dioxide (NO2) SAW sensors in this work. Spray coating method showed
its advantages in improving the solid film quality of the sensing layer and the performance of the sensors. SEM characterization shows that the spray coating films are more uniform and poly-porous. Sensors with spray coating film can detect NO2 range from sub ppm to hundreds ppm
with high sensibility and stability. Its sensitivity is 42.31 Hz/ppm and its sensing limit is down to 57.2 ppb.
研究领域:
材料科学
·
环境监测
·
传感器技术
✓ 已验证
DOI
Sensor Letters
·
2016
·Vol. 14
·期 7
·656-664
·
IF 0
Dong Yan,Wang Lu,Nie Fei,Zheng Jianbin
A novel polypyrrole-fullerene-didodecyldimethylammonium bromide (PPy-C60-DDAB) was synthesized by an in situ chemical oxidative polymerization method. Scanning electron microscopy (SEM) study showed the morphologies of the nanocomposites. The direct electrochemistry
of hemoglobin (Hb) immobilized on the designed PPy-C60-DDAB composite film modified carbon ionic liquid electrode (Nafion/Hb/PPy-C60-DDAB/CILE) and its biosensing for hydrogen peroxide (H2O2) were investigated. The results indicated that direct electron
transfer of Hb was realized on the underlying electrode with the usage of the PPy-C60-DDAB nanocomposite film. Moreover, the Nafion/Hb/PPy-C60-DDAB/CILE based sensor showed prominent electrocatalytic activity for the detection of H2O2. The current
response was linearly related to the H2O2 concentration in the range from 1 to 114 μM, with a sensitivity of 936 μA mM–1 cm–2 and a second range from 114 to 1479 μM with a sensitivity of 299 μA
mM–1 cm–2. The detection limit was 0.3 μM at a signal-to-noise ratio of 3. Thus the PPy-C60-DDAB composite provided by simple synthesis technique will have potential application in studying the electron transfer of enzyme and the design
of novel electrochemical biosensors.
研究领域:
材料科学
·
电化学
·
纳米技术
·
生物传感器
·
分析化学
✓ 已验证
DOI
Sensor Letters
·
2016
·Vol. 14
·期 6
·623-629
·
IF 0
Li Liping,Liu Xiaojia,Xiao Qian,Zheng Yizhi,Wang Suiping,Feng Bo
A novel antibody immobilization method was developed for enzyme-linked immunosorbent assay (ELISA). The proposed method utilizes amine-bearing polymer macromolecules, namely, polyamidoamine (PAMAM) or polyethylenimine (PEI) to enhance antibody binding on polystyrene (PS) microwells,
as well as staphylococcal protein A (SPA) to realize orientation immobilization. After carboxylating the PS microwells with the solution of potassium permanganate (KMnO4) in diluted sulfuric acid (H2SO4), the PS surface was activated by 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide
hydrochloride and N-hydroxysuccinimide and then grafted with PAMAM or PEI to introduce free amino groups. Glutaraldehyde was subsequently added to conjugate the amino groups and SPA prior to antibody adsorption. X-ray photoelectron spectroscopy and atomic force microscopy were performed to
investigate the morphology of the PS surfaces before and after different treatments. The immunoglobulin binding sites were confirmed through anti-Fab and anti-Fc ELISA kits. Results from the alpha fetoprotein ELISA kit showed that the use of both PAMAM and SPA is the optimal method for antibody
immobilization. In this treatment, absorbance exhibited an evident gradient with antigen concentrations and reached higher values over 200 ng/mL antigen compared with the ones of other methods.
研究领域:
生物化学
·
分子生物学
·
分析化学
✓ 已验证
DOI
Sensor Letters
·
2014
·Vol. 12
·期 11
·1607-1612
·
IF 0.558
Cai Meizhi,Shi Wenxiu,Zhu Lei,Du Xiaoyan,Chang Dong
An electrochemical sensor was developed based on hyaluronic acid (HA)-doped polypyrrole (PPy) modified glassy carbon electrode (GCE), and applied to the determination of vitamin C. The HA-PPy modified GCE was constructed by doping HA during the electropolymerization of PPy on GCE. The
modified electrode was characterized by scanning electron microscope, cyclic voltammetry and electrochemical impedance spectroscopy. Several important parameters of the sensor were investigated and optimized. The results showed that doping HA in the polymerization of pyrrole could induce the
linear polymerization process of pyrrole and a perfect nanowire of PPy was obtained. The results also showed that the electrochemical performance of the HA-PPy modified electrode significantly depended on the doping dose of NaHA as a dopant. Compared with bare GCE and PPy modified GCE, HA-PPy
modified GCE revealed higher redox current to the electroactive compounds and smaller resistance in K3 [Fe(CN)6] solution. Under the optimal conditions, the HA-PPy modified GCE showed a wide linear range from 1.0 × 10–4 to 1.0 × 10–1
mol/L with a detection limit of 6.9 × 10–6 mol/L for the voltammetric determination of vitamin C. The HA-doped PPy modified electrodes showed significant improvement for the electrochemical characteristics, and this sensor is successfully applied to determination of
vitamin C.
研究领域:
电化学
·
传感器与生物传感器
·
分析化学
·
纳米材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）