INTERNATIONAL BIODETERIORATION & BIODEGRADATION
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2017
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IF 2.962
Weiwei Chen,Junde Li,Xiangnan Sun,Jun Min,Xiaoke Hu
A bacterial strain , CN-3, was isolated from petroleum-contaminated sediment in Bohai Bay, China. Morphological, physiological and phylogenetic analyses indicated that the strain belonged to the genus Dietzia . It was capable of utilizing a wide range of alkanes (C 14 –C 31 ), aromatic compounds and crude oil as the sole carbon and energy sources. The bacterium showed high degradation rate (>80%) of the saturated hydrocarbons of crude oil in the pH range of 6–9. The degradation rate was hardly affected at a NaCl concentration up to 85 g L −1 , indicating that the strain can tolerate high salinities . The real-time quantitative Polymerase Chain Reaction (PCR) results showed that the CYP153 genes could be significantly induced by C 14 , C 15 , C 16 , C 26 and pristane, whereas the transcription level of alk B gene was increased moderately with C 14 , C 15 , C 16 , C 26 and pristane induction condition. A high degradation extent, wide substrate range and facile conditions enhanced the potential for this bacterial strain to be used in the bioremediation of crude oil pollution.
研究领域:
微生物学
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环境科学
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Yu Wang,Yao Yu,Yi-Ping Hou,Xue-Wei Mao,Zong-Liang Liu,Jian Cui,Bi Wang,Shu Xu,Yi-Yun Qian,Yan-Qin Jiang,Min Wei,Ping-Ping Song
Botrytis cinerea causes gray mold in many fruit and vegetable crops. We previously found that Seselin (SL) displayed antifungal activity against B. cinerea (EC50 = 6.1 μg·mL–1), and this study investigated the effects of Ca2+ and the Ca2+/CN signaling pathway on its antifungal activity against B. cinerea. The results indicated that exogenous Ca2+, Cyclosporine A, and Verapamil reduced the sensitivity of SL against B. cinerea; SL significantly reduced the intracellular Ca2+ concentration in the hyphae; the sensitivity of strains ΔbcCCH1 and ΔbcMID1 to SL were significantly increased; and the expressions of CCH1, MID1, CNA, PMC1, and PMR1 genes of the Ca2+/CN signaling pathway were significantly downregulated by SL treatment. Hence, SL is a potential compound for developing fungicides against B. cinerea. SL dramatically reduces intracellular Ca2+ concentration and disturbs Ca2+ homeostasis, leading to cell death. The Ca2+/CN signaling pathway plays an important role in the antifungal activity of SL against B. cinerea.
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JOURNAL OF HAZARDOUS MATERIALS
·
2020
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IF 9.038
Y.L. Zhao,G.G. Li,H.M. Hou,J.C. Shi,S.N. Luo
We investigate atomic and molecular emission of laser-ablated nitromethane in an Ar or N 2 buffer gas, with fs laser-induced breakdown spectroscopy. The electronic bands of CN, C 2 , and NH molecules and the atomic transition lines of C I, N I, and H α are identified. The time series of the emissions are obtained, and the formation mechanisms of CN and C 2 are deduced. The CN violet system, the B 2 Σ + -X 2 Σ + (0-0) band, is chosen to extract plasma temperature from the experimental spectra.
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Analytical Methods
·
2019
·Vol. 11
·期 22
·2868-2874
·
IF 2.378
Lifei Ji,Xian Zhou,Jian Zhang,Xin Zhang,Weidong Kang,Fengchun Yang
Organic dye detection requires high sensitivity, low-cost equipment, simplified procedures, and real-time capabilities; thus, electrochemical methods are gradually emerging in this field instead of chromatography. However, much attention has been paid to toxic and complex metal or noble-metal hybrid materials for constructing electrochemical sensors, which is extremely limiting for practical applications. In this study, a metal-free electrocatalyst, MWNTs with carboxylic groups (MWNTs–COOH), was prepared through surface oxidation in a piranha solution and a simple hydrothermal treatment. The obtained MWNTs–COOH possessed superior hydrophilicity, increased conductivity and substantial active carbon or carboxylic group sites, as determined by characterization using Raman spectroscopy, contact angle measurements, electrochemical surface area analysis, and X-ray photoelectron spectroscopy. The above advantages enabled MWNTs–COOH to exhibit excellent electrochemical activities, with a satisfactory utilization for determining trace Rhodamine B (RhB), showing a lower calculated detection limitation of 2.66 nM and a wider linear range from 0.05 to 850 μM with outstanding specificity and reproducibility. Furthermore, it was found that the carboxyl group on the MWNTs would probably have triggered the electron redistribution and exposed more adjacent active carbon sites, which facilitate the electrocatalytic function to CN on the RhB directly.
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Jove-Journal of Visualized Experiments
·
2021
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IF 1.355
Zitaiyu Li,Yinghao Yin,Kancheng He,Kun Ye,Jun Zhou,Hao Qi,Yihong Zhou,Yingbo Dai,Yuxin Tang
The bilateral cavernous nerve (CN) injury rat model has been extensively used to simulate clinical cavernous nerve injury associated with erectile dysfunction (ED) for evaluating the effect of clinical therapeutic methods. However, the methods of CN injury model construction are flawed and varied in the ED research field. It is CN crush injury that is the most commonly used method in recent years. This study aims to provide a detailed description of the procedure of bilateral CN injury rat model construction and measurement of intracavernous pressure (ICP) recording, providing a reliable and reproducible CN injury rat model. This work successfully developed the CN injury method of hemostat crush injury using a syringe needle as hard support and a hemostat with a rubber sleeve. Also, this method concludes that a voltage of 1.0 V, frequency of 20 Hz, and pulse-width of 5 ms are the optimized stimulation parameters for ICP recording in a bilateral CN injury rat model.
研究领域:
泌尿学
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神经科学
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生理学
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
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IF 4.098
Wei Pan,Guo-Guo Chen,Zhen-You Zhang,Xiao-Qun Cao,Shi-Li Shen,Xian-Hong Pang,Yan Zhu
Cyanide (CN − ) is a highly toxic compound that exists in many substances and is harmful to the environment and human health. Therefore, it is of great significance to develop excellent CN − ion probes, especially solvent-induced on–off fluorescent probes. Based on the condensation reaction of indolo[2,1-b][1,3]oxazine molecules with aldehydes, probes ( E )-13a-(2-(9-ethyl-9 H -carbazol-3-yl)vinyl)-14,14-dimethyl-10-nitro-13a,14-dihydro-8 H -benzo[e]benzo[5,6][1,3]oxazino[3,2-a]indole (NCO) and ( E )-13a-(2-(9-benzyl-9 H -carbazol-3-yl)vinyl)-14,14-dimethyl-10-nitro-13a,14-dihydro-8 H -benzo[e]benzo[5,6][1,3]oxazino[3,2-a]indole (NBO) were synthesized to detect CN − . Compared with other cyanogen ion probes, NCO and NBO have special carbazole ring structures and large conjugate systems. When CN − is added to the probe-detection solution, color changes that are visible to the naked eye can occur. The UV–vis spectrum test using differential spectroscopy shows that the probe (i) has excellent solvent-induced switching characteristics and stability (CH 3 OH–H 2 O) and (ii) high selectivity, anti-interference ability, and sensitivity for the detection of CN − . The fluorescence limit of detections (LODs) are 1.05 µM for NCO and 1.34 µM for NBO. The UV LODs are 0.83 µM for NCO and 0.87 µM for NBO. Fluorescence spectroscopy shows that the probe has remarkable fluorescence properties. Fluorescence titration experiments, liver cancer cell (Hep G2) imaging, and cytotoxicity experiments all show that the probes have high biocompatibility, low toxicity, high cell permeability, and high sensitivity for the detection of CN − in cells. In addition, NCO and NBO have been successfully used for the detection of cyanogenic glycosides in the seeds of ginkgo, crabapple, apple, and cherry. Test strips were fabricated to detect CN − . After adding CN − , the color of the test strip changed significantly—from brown to light yellow; thus, the test strips have a high application value in the fields of drug quality control, drug safety testing, and pharmacological research.
研究领域:
分析化学
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生物医学
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环境科学
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高影响因子
DESALINATION
·
2026
·
IF 9.9
Ying Wang,Qingliang Wang,Xiaohui Kang,Mengfan Wang,Shusen Chen,Yan Song,Hongqiang Wang
Square-wave voltage enables rapid, efficient uranium removal, outperforming constant-voltage methods. • The rGO/CuSA-CN electrode achieves 3.34 mg/g/h uranium extraction in brine—the highest reported value. • Chlorella-pretreated biofouling quadruples uranium extraction rate, electrode maintaining 100% efficiency over 24 cycles. • Bridges desalination brine valorization with strategic uranium recovery, advancing nuclear energy circular economy. Uranium extraction from seawater is widely regarded as the most promising approach for uranium resource acquisition. However, the extremely low uranium concentration in seawater (3.3 μg/L) presents significant technical challenges. This work develops a novel rGO/CuSA-CN electrophoto-catalytic composite electrode, achieving remarkable breakthroughs in uranium recovery from desalination concentrated brine—a typical desalination brine valorization practice that converts an environmental waste stream into a strategic resource supply. Remarkably, under natural seawater pH (pH 8), the application of square wave voltage enables 98.0% uranium removal from a 10 mg/L solution within 5 min, a performance far outperforming constant voltage methods; square wave voltage enables rapid uranium deposition and sustained electrode activity by periodically reversing the potential, which inhibits passivation, promotes U(V) re-oxidation and prevents active site blockage. Furthermore, by simulating biofouling conditions with Chlorella pretreatment, we discovered an unexpected synergy that quadrupled the uranium extraction rate, reaching 3.34 mg/g/h from the pretreated brine—a rate significantly higher than most reported values for direct seawater extraction and suggesting practical viability for high-throughput processing. This finding offers a new perspective for adapting extraction technologies to real-world desalination plant conditions. In selectivity experiments, the electrode exhibited exceptional performance, with a uranium-to‑magnesium distribution coefficient ratio (K d (U)/K d (Mg)) reaching 72.6 even against the strongest interference. This work establishes a new paradigm for desalination brine valorization, transforming a problematic waste stream into a strategic resource and advancing the circular economy of nuclear energy materials. Download: Download high-res image (115KB) Download: Download full-size image
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 12
·730
·
IF 3.5
Feng Xiao-qiang,Hou Jing-wen,Dong Xiao-ning,Li Xiao-fang
The present work constructs a novel Ag₂S/CN composite photocatalyst via in-situ hydrothermal method. The photocatalytic performance of the obtained Ag₂S/CN composite was meticulously evaluated through the degradation of methyl orange (MO) under visible light irradiation. Compared to pure CN and Ag₂S, the Ag₂S/CN composite exhibited significantly enhanced photocatalytic performance. Specifically, the optimal Ag₂S/CN (0.4) sample achieved activities that were 70 and 5 times higher than those of Ag₂S and CN, respectively. This remarkable enhancement can be attributed to the reduced band gap and expanded light absorption range of CN when combined with Ag₂S. Additionally, the surface plasmon resonance (SPR) effect of Ag 0 nanoparticles generated during photodegradation further improves photocatalytic performance by facilitating the separation of photogenerated carriers. Based on photoelectrochemical properties and active species trapping experiments, a plausible mechanism involving hydroxyl radicals (·OH) and superoxide radicals (·O₂⁻) is proposed. The combination of wide-bandgap and narrow-bandgap semiconductors offers a promising strategy for developing efficient photocatalysts for wastewater treatment.
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ACS Sustainable Chemistry & Engineering
·
2025
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IF 7.3
Xiaoxue Cheng,Chenchen Li,Qifan Ling,Xinyu Wang,Jiangshan Zhang,Kexin Zhang,Naparat Kasetsomboon,Shuang Wang,Ding Jiang
Vanillonitrile (VN), a valuable pharmaceutical intermediate, is traditionally synthesized through toxic cyanide-based routes. Herein, we report a green, two-step approach for VN synthesis starting from vanillin (VL), a lignin-derived platform molecule. The process integrates solvent-assisted condensation and catalytic pyrolysis, supported by mechanistic insights from density functional theory (DFT). In the first step, vanillin azine (VA) is selectively synthesized in ethanol, with solvent polarity and noncovalent interactions governing reaction kinetics and selectivity. Pyrolysis experiments and quantum chemical calculations reveal that hydrogen-transfer-induced N–N bond cleavage is the dominant route for VA conversion. A heterostructured Ni/NiO@CN catalyst featuring interfacial Ni–N sites was developed to lower activation energy and promote electron redistribution, enhancing VN selectivity to 57.2%. Surface potential and spin polarization analysis further confirmed efficient electron transfer pathways. This work provides a sustainable and efficient route to nitrogen-containing fine chemicals from renewable lignin and offers mechanistic guidance for future biomass-based catalytic designs.
研究领域:
催化化学
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绿色化学
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生物质转化
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有机合成
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计算化学
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材料化学
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药物化学
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Xin-jie Zhao,Ying-jie Sun,Wei-hong Chai,Xiao-jing Wang,Jun Zhao,Yu-pei Li,Fa-tang Li
The spatial photoinduced charge separation and atomic H 2 evolution active site is decisive in the operating efficiency of the photocatalytic hydrogen evolution reaction, yet its rational design and synthesis remain a grand challenge. Here, a series of Hofmann-type coordination polymers (HCPs) with planar anionic block [Ni(CN) 4 ] 2- units were found to effectively enhance the photocatalytic H 2 evolution reaction (PHER) activity of transition metal sulfides (TMSs). This proof-of-concept study investigated four HCPs with planar anionic block [Ni(CN) 4 ] 2- units combined with different central transition metal ion (M 2+ : Ni, Co, Fe, and Mn). All four HCP-modified TMSs exhibited remarkable PHER activity of more than 20.0 mmol g −1 ·h −1 and an apparent quantum yield of ∼20 %, surpassing that of optimized Pt/Zn 0.5 Cd 0.5 S by more than 1.5-fold. Through spectroscopic characterization, Kelvin probe force microscopy (KPFM), and density functional theory (DFT) simulations, we confirmed that the [Ni(CN) 4 ] 2- units potentially bridged with the TMSs via an M-S bond forming an electronic transmission channel, thus eliminating the interface energy barrier. Due to the appropriate band structure, the photogenerated electrons converged to the [Ni(CN) 4 ] 2- units, consequently facilitating the conversion of H + to H 2 . This work demonstrates a rational synthetic route for creating PHER photocatalysts that possess mild synthesis conditions, efficient electronic transmission interfaces, and an active center that can be finely manipulated.
研究领域:
材料化学
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光催化
·
无机化学
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能源科学
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纳米材料
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表面科学
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物理化学
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高影响因子
Surfaces and Interfaces
·
2025
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IF 6.3
Xiaomei Yu,Wei Shi,Min Li,Linlin Wang,Jin You Zheng,Jianmeng Wu,Peng Zhu,Songjie Li
The pursuit of enhanced photoelectrochemical (PEC) water-splitting performance in carbon nitride (CN) photoanodes has led to numerous strategies due to its visible light responsiveness, affordability, and stability. Nonetheless, the rapid electron-hole recombination, poor conductivity, and sluggish surface reaction kinetics remain significant challenges for its applications. In this study, we successfully introduced ternary CoNiFe layered double hydroxide (LDH) nanocages onto carbon nanotubes (CNTs)-doped CN photoanodes. Improved crystallinity and accelerated charge transfer were achieved after CNTs doping for enhanced charge separation during the PEC reactions. Besides, the electronic band structure of CN/FTO photoanode was modulated for increased carrier concentration. The decoration of CoNiFe LDH nanocages not only provides more efficient reaction active sites but also accelerates the catalytic reaction kinetics for lower onset potential and improved PEC performance. The photocurrent density for CoNiFe-LDH/CN-CNTs/FTO photoanode increased around 4 times higher than that for the in-situ fabricated CN/FTO without any sacrificial agent in alkaline. The synergy corporation of LDH and CNTs brings more available holes with a longer lifetime and more active sites for water oxidation. This innovative approach establishes a new avenue for designing highly efficient water oxidation cocatalysts on semiconductor photoanodes, promising rational advancements in PEC applications.
研究领域:
材料科学
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能源科学
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化学工程
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高影响因子
INORGANIC CHEMISTRY
·
2025
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IF 4.7
Jinchang Zhang,Xuefeng Cheng,Jicai Jiang,Apiladda Pattanateeradetch,Shuai Shi,Chanat Chokejaroenrat,Qingfeng Xu,Jianmei Lu
Selective enrichment of cesium ions (Cs+) at ultralow concentrations is essential for resource recovery and radioactive waste disposal, yet efficient adsorbents are lacking. Herein, we reported a Prussian blue analogue (K2Cu3(Fe(CN)6)2, Cu-PBA) decorated on MXene nanosheets by in situ fabrication, forming a composite material termed PMX, for enhanced adsorption of Cs+ in acidic solutions and seawater. The stable, negatively charged MXene effectively anchors Cu2+ precursors and promotes Cs+ adsorption. The synergistic interaction between MXene and the in situ-synthesized Cu-PBA significantly enhances the adsorption performance and water stability of PMX in both acidic solutions and seawater. PMX achieves rapid adsorption equilibrium within 5 min, with a high adsorption capacity of 408.2 mg/g at pH 1, surpassing conventional adsorbents. Moreover, PMX shows excellent Cs+ selectivity (Kd = 68,361.7 mL/g), cycle stability, and notable anti-irradiation ability, demonstrating superior efficiency in Cs+ enrichment from complex matrices. The adsorption mechanism involves electrostatic attraction and K+/Cs+ ion exchange, facilitated by MXene’s functional groups and the Cu-PBA structure. These findings underscore the excellent potential of PMX as an efficient adsorbent for resource enrichment and the removal of radioactive elements such as Cs+.
研究领域:
材料科学
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环境科学
·
核化学
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PubMed
高影响因子
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