Metals
·
2024
·Vol. 14
·期 1
·87
·
IF 2.6
Yuantao Yang,Junli Wang,Xuanbing Wang,Jinlong Wei,Xiaoning Tong,Ruidong Xu,Linjing Yang
The electrolytic refining of crude tin is generally carried out in the fluorosilicic acid (H2SiF6) system with the assistance of bone glue and β-naphthol. However, the high saturated vapor pressure and low stability of H2SiF6present environmental concerns and do not align with sustainable development goals. In this paper, the electrochemical behavior of tin on a glassy carbon (GC) electrode was studied in a relatively green and environmentally friendly methanesulfonic acid (MSA) system. Bone glue, sodium lignosulfonate, and β-naphthol were used as additives to make the deposit morphology smooth and to ensure grain refinement. The electrochemical reduction process of Sn2+in an MSA system is a quasi-reversible process controlled by diffusion. The apparent activation energyEa= 14.189 kJ/mol for the ion diffusion of Sn2+was further calculated. The results of chronoamperometry showed that the electrocrystallization of Sn2+on the GC electrode gradually tended to three-dimensional instantaneous nucleation with the increase in applied potential. The morphology and phase of the deposits were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results showed that the deposits were uniform and dense pure tin. This work elucidates the electrochemical behavior of tin in a methanesulfonic acid system.
研究领域:
电化学
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材料科学
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高影响因子
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
·
2015
·
IF 1.202
Yong H. Qi,Hui C. Zhang,Rui T. Xu,Jin Liu,Lei Zhang,Jian P. Wang
The objective of the present study was to develop a multi-analyte immunoassay for the determination of eight red dyes in food samples. Two dye intermediates (2-hydroxy-1-naphthoic acid and 1-amino-2-naphthol) were used as the haptens to produce the monoclonal antibodies. The obtained monoclonal antibodies recognized Sudan 1–4, Para red, Sudan red G, Sudan red B and Acid orange II simultaneously. After evaluation of different antibody/coating antigen combinations, a heterologous indirect competitive enzyme linked immunosorbent assay was developed to determine the eight red dyes in food samples (chili oil, chili powder, tomato sauce, hotpot seasoning). The crossreactivities to the eight analytes were in the range of 61%–79% (with β-naphthol as 100%), and the limits of detection were in the range of 1.3–1.9 ng/mL. The recoveries of the eight analytes from the fortified blank samples were in the range of 84.2%–115% with coefficients of variation lower than 18.3%. Therefore, this method could be used as a rapid and simple tool to detect the residues of the eight red dyes in foods.
研究领域:
分析化学
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免疫学
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PubMed
高影响因子
CHROMATOGRAPHIA
·
2016
·Vol. 79
·期 5
·327-333
·
IF 1.332
Peng Xiaofeng,Wang Huawen,Yang Binbin,Zhan Xin,Wu Yiwei
To improve the sensitivity of capillary electrophoresis, field-amplified sample injection (FASI) was developed to determine bisphenol A (BPA), α -naphthol ( α -NAP) and β -naphthol ( β -NAP) in drinks and lake water. Parameters (sample matrix, concentration of NaCl, water plug length, sample injection time and voltage) affecting FASI have been systematically investigated. Under optimum conditions, the sensitivity was improved 17.1-, 15.8- and 9.9-fold for BPA, α -NAP and β -NAP, respectively. The detection limits of BPA, α -NAP and β -NAP were 0.071, 0.038 and 0.081 μg mL −1 and the proposed method has been successfully applied to detect BPA, α -NAP and β -NAP in drinks and lake water with recoveries of 82.0–109.3 %.
研究领域:
分析化学
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环境科学
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高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Haiyang Fan,Guiyun Yi,Zhengting Zhang,Xiuxiu Zhang,Peng Li,Chuanxiang Zhang,Lunjian Chen,Yulong Zhang,Qi Sun
Herein, we successfully fabricated the Ag deposited BiVO 4 (ABVO) electrode via the combination of electrodeposition and photodeposition for efficient photoelectrocatalytic degradation of β-naphthol under visible-light illumination (λ > 420 nm). The photocurrent density of ABVO photoanode was around 1.6 times higher than that of BiVO 4 (BVO) under visible-light irradiation at 1.5 V vs. Ag/AgCl, which was ascribed to the reduced recombination rate of photoinduced electron-hole pairs, as confirmed by electrochemical impedance spectroscopy (EIS) and Mott-Schottky plots. Additionally, the photoelectrocatalytic (PEC) degradation rate of β-naphthol (10 mg L −1 , 300 mL) by ABVO could approximately reach 80%, whose corresponding kinetic constant was 1.56 times higher than BVO. Based on the radical quenching experiments and EPR results, the •OH and •O 2 - radicals played crucial roles in PEC degradation of β-naphthol. The enhanced PEC performance of ABVO can be ascribed to the synergy of photocatalysis , electrocatalysis and the localized surface plasmon resonance (LSPR) effect of deposited Ag particles, which can effectively suppress the recombination of photoinduced electron-hole pairs, thereby prolonging the photo-excited charges lifespans and promoting the PEC performance. Furthermore, the ABVO photoanode possesses excellent recyclability , outstanding stability and strong resistance to acid and alkali, which can be a promising candidate for PEC organic contaminants degradation.
研究领域:
环境科学
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材料科学
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COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
·
2022
·Vol. 25
·期 12
·2026-2032
·
IF 1.714
Che Zhiping,Zhang Song,He Jiaxuan,Sun Di,Guo Xiaolong,Li Yuanhao,Zhu Lina,Guo Yihao,Liu Yibo,Tian Yuee,Huang Xiaobo,Liu Shengming,Chen Genqiang
Background: Developing new, efficient, and environment-friendly small molecule fungicides is the key to effectively prevent and control plant pathogenic oomycetes. α/β-Naphthol is an important raw material for drug synthesis. Due to its special structure, α/β-naphthol
and its analogs possess significant biological activity. The preparation and anti-oomycete activity of novel sulfonate derivatives based on α/β-naphthol against Phytophthora capsici have not been reported yet. Methods: Thirty-two sulfonate derivatives of α/β-naphthol
(4a-p and 5a-p) were prepared. The structure of all title compounds was identified by 1H NMR, MS, and m.p. The anti-oomycete activity of 4a-p and 5a-p against P. capsici was determined using the mycelial growth rate method. Results: With our ongoing research aimed
at the discovery and development of fungicidal agents, 4a-p and 5a-p were designed and synthesized, and their anti-oomycete activity against P. capsici was evaluated in vitro. Two compounds 4a and 5a were found to have good anti-oomycete activity against P. capsici, and their corresponding
EC50 values were 63.41 and 65.21 mg/L, respectively. Conclusion: It has been observed that the substituent R in these derivatives is aliphatic, which is very important for maintaining their anti-oomycete activity. The results lay a foundation for further design
and development of sulfonate derivatives of α/β-naphthol as fungicidal agents. The structure- fungicidal activity relationship of α/β-naphthol derivatives is under investigation in our laboratory.
研究领域:
植物病理学
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有机化学
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农药科学
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PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Yali Yang,Jia Chen,Xiaojing Liang,Bei Liu,Kaijun Quan,Xiuhui Liu,Hongdeng Qiu
In this paper, three imidazole- and C18- bifunctional silica stationary phases (Sil-Im-C18) were prepared by adjusting introduction interval of octadecyltrichlorosilane (ODS) and 3-imidazol-1-ylpropyl(trimethoxy)silane (TMPImS), which can be used for reversed-phase liquid chromatography (RPLC) and ion exchange chromatography (IEC) with adjustable performance. The successful preparation of Sil-Im-C18 were confirmed by the characterizations of elemental analysis, infrared spectroscopy (FTIR) and contact angle (CA). Chromatographic performance of Sil-Im-C18 were evaluated by the separation of Tanaka test mixture, alkylbenzenes, linear PAHs and a set of analytes with different properties (uracil, phenol, 1,2-dinitrobenzene and naphthalene), and compared with commonly used C18 column. It was found that the chromatographic performance of Sil-Im-C18 changed significantly with the difference in bonding amount of imidazole and C18. Sil-Im-C18 demonstrated the excellent separation performance towards polycyclic aromatic hydrocarbons (PAHs), phenylesters, phenylamines , phenols and inorganic anions, and notably, nucleobases and nucleosides can be separated using pure water as mobile phases . The van Deemter plot showed that the column efficiency of Sil-Im-C18-3 was 64,933 plate· m − 1 for naphthalene, indicated that Sil-Im-C18 was reasonably chromatographic columns. The RSD values of retention time were 0.22 %-0.61 % for 10 needles alkylbenzenes injected continuously at 50 °C to investigate thermal stability and repeatability, all the fluctuations of k of naphthalene were less than 2.3 % for Sil-Im-C18-1 during flushing 24 h with the mobile phase at different pH values (pH = 3 and 8), the retention time of alkylbenzenes were almost same for Sil-Im-C18-1 at different time, the RSD values of retention time of alkylbenzenes were 0.45 %-2.28 % for two batches Sil-Im-C18-1, revealing the excellent repeatability, thermal stability, durability and reproducibility of Sil-Im-C18, and implying a commercial prospect.
研究领域:
分析化学
·
色谱技术
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高影响因子
Microorganisms
·
2025
·Vol. 13
·期 1
·202
·
IF 4.2
Xinyue Sui,Likun Guo,Zixian Bao,Mo Xian,Guang Zhao
Phenolic compounds are industrially versatile chemicals that have been successfully produced in microbial cell factories. Unfortunately, most phenolic compounds are highly toxic to cells in specific cellular environments or above a particular concentration because they form a complex with iron and promote hydroxyl radical production in Fenton reactions, resulting in the ferroptosis of cells. Here, we demonstrated that overexpression of efflux pumps and porins, including porins LamB and OmpN, and efflux pumps EmrAB, MdtABC, and SrpB, can enhanceEscherichia coliphloroglucinol (PG) tolerance by inhibiting the generation of hydroxyl radicals. In addition, LamB and OmpN overexpression improved the bioproduction of PG. Furthermore, efflux pumps and porins can enhance bacterial tolerance to various phenolic compounds, including phenol, catechol, resorcinol, pyrogallol, and 2-naphthol. LamB and MdtABC confer a generalized tolerance to phenols. However, EmrAB, OmpN, and SrpB showed inconsistent effects of bacterial tolerance to different phenolic compounds. Our results will theoretically support the construction of phenolic compound-tolerant bacteria strains, which should be more efficient in the biosynthesis of phenols.
研究领域:
微生物学
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生物技术
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生物工程
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PubMed
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Chengxin Zhang,Lulu Yang,Lin Zhao,Yu Liu,Dongfeng Hong,Xiaoyuan Shi,Shaolei Wang,Guangshan Zhu
Various porous adsorbent materials have shown excellent adsorption performance for the removal of organic micro-pollutants in water. However, the practical application was hindered by the high cost or slow adsorption kinetics for most of porous adsorbents. Therefore, it is of great significance to develop economic adsorbent materials with characteristic like low-cost, easier preparation method, excellent adsorption kinetics etc . Herein, based on the Friedel-Crafts alkylation reaction, we reported three novel hydrophilic organic porous adsorbent frameworks (PAF-210, PAF-211 and PAF-212) with high Brunauer-Emmet-Teller (BET) surface area (956 ∼ 1384 m 2 /g) for phenolic micro-pollutants (bisphenol A (BPA), 2,4-dichlorophenol (2,4-DCP) and 2-naphthol (2-NO)) adsorption in water, which were prepared by using cheap trimethyl orthoformate (TMOF) as crosslinker and one-step simple ball milling synthetic method under room temperature within 15 min. Rich oxygen content promotes the resulting polymers to possess excellent hydrophilicity and wettability through water vapor adsorption and water contact angle analysis. The excellent hydrophilicity and proper porous properties made the resulting frameworks suitable as porous organic adsorbents to rapidly remove organic phenolic micro-pollutants from water. Among the resulting polymers, the PAF-210 exhibited ultra-fast adsorption (>94.0 % within 5 s), ultra-rapid adsorption kinetics with pseudo-second-order rate constants (K 2 , up to 7.72g/mg min −1 for 2,4-DCP), high pollutant adsorption capacity (up to 867.03 mg g −1 for BPA) and excellent recyclability (10 cycles with slight loss in adsorption capacity) through systematically characterization. The adsorption performances of PAF-210 are much better than these of the commercial activated carbons and β-cyclodextrin-based porous adsorbents (K 2 = 1.50g/mg min −1 for P-CDP) etc . The favorable hydrophilicity, surface wettability, and adsorption performance of PAF-210 were significantly better than the comparative material constructed by using benzene and formaldehyde dimethyl acetal (FDA) through conventional thermal synthetic method, which is a very classic synthesis strategy in the field of porous materials. More importantly, the PAF-210 exhibited relatively superior adsorption performance on BPA, and it still presented excellent adsorption performance (removal efficiency ≥ 96.8 % within 5 s after 10 cycles) even at the safe range of BPA quantified in drinking water (BPA≤10 μg L −1 , Standards for drinking water quality, GB5749-2022, China). XPS analysis and theoretical simulations proved that the excellent adsorption performance and ultra-fast adsorption rate stem from interactions including π-π interactions, hydrogen bonding and van der Waals interactions between PAF-210 and micro-pollutants.
研究领域:
环境科学
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材料科学
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Wenchao Jia,Tianyuan Xiao,Yanzhu Guo,Pedram Fatehi,Yanning Sun,Meihong Niu,Haiqiang Shi
Condensed lignin formed during eucalyptus woodchip pre-hydrolysis adversely affects subsequent enzymatic saccharification , and phenolic additives are popular lignin condensation inhibitors. The goal of this project was to reveal the mechanisms of lignin modification by phenolic additives during woodchip pre-hydrolysis and its effects on subsequent enzymatic saccharification. The HSQC and 31 P NMR analyses confirmed that resorcinol with three electrophilic substitution of active sites could act as a cross-linking agent to promote the formation of condensed lignin, whereas 2-naphthol and sodium 2-naphthol-7-sulfonate could block benzyl carbocations and reduce the formation of condensed lignin. Interestingly, the introduction of sulfonic acid groups increased the electrostatic repulsion between enzyme and lignin as well as increased the hydrophilicity of lignin, thereby greatly reducing non-productive adsorption and physical obstacle effects. Sodium 2-naphthol-7-sulfonate as an efficient benzyl carbocations scavenger reduced the non-productive adsorption and physical obstacle effects of lignin by 82.4% and 13.3%, respectively.
研究领域:
生物化学
·
林产化学工程
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Ruomu Chen,Yumeng Niu,Nan Li,Jingrui Peng,Ziqian Xia,Chenyang Wang,Jiandong Jiang,Kai Chen
Nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) are toxic and persistent environmental contaminants of increasing concern because of their widespread occurrence and ecological risks. Nitronaphthalene, a representative nitro-PAH, occurs as positional isomers, yet microbial degradation studies have mainly focused on 1-nitronaphthalene (1-NN), leaving the basis for biodegradation of 2-nitronaphthalene (2-NN) largely unresolved. In this study, Burkholderia pseudomultivorans M3 was isolated from river sediment in Anhui Province, China, and was found to efficiently degrade both 1-NN and 2-NN, indicating an expanded degradation range for nitronaphthalene isomers. Genome analysis identified a novel nitronaphthalene degradation gene cluster ( nnd ) that is phylogenetically related to reported nin - and nag -type gene clusters but differs functionally from both. Gene knockout and complementation experiments demonstrated that nndAc , encoding the catalytic α-subunit of a Rieske-type dioxygenase, is essential for degradation of both isomers. Heterologous expression and metabolite identification further showed that the NndAB system transforms 1-NN and 2-NN into 1,2-dihydroxynaphthalene via the corresponding nitro-dihydrodiol intermediates, with concomitant nitrite release. Site-directed mutagenesis revealed that the ability of NndAc depends on the coordinated effects of multiple active-site residues, with F200 being particularly important for 2-NN transformation. Moreover, strain M3 maintained substantial removal efficiency in synthetic wastewater containing mixed nitro-, carboxyl-, and hydroxyl-substituted naphthalene compounds, supporting its applicability in complex contaminated matrices. These findings reveal the molecular basis underlying the broadened substrate range of nitronaphthalene degradation and highlight the potential of strain M3 for remediation of wastewater containing mixed substituted naphthalene pollutants.
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PubMed
高影响因子
BIOMASS & BIOENERGY
·
2026
·
IF 7
Jinlei Guo,Sheng Su,Song Guo,Xiaoyang Zhang,Juan Wang
This work examines how phosphoric acid–hydrogen peroxide (PHP) pretreatment influences the pyrolysis behavior of pine biomass and the characteristics of the resulting products. The results indicate substantial removal of hemicellulose and lignin from the biomass following PHP pretreatment, resulting in a looser biomass structure, decreased surface oxygen-containing functionalities, and a reduced apparent activation energy during pyrolysis. After pretreatment, the bio-oil yield increases from 15.16% to over 30%, and the bio-oil yield of the sample pretreated with a concentrated phosphoric acid–hydrogen peroxide mixture at a concentration ratio of 50.0–10.0 wt% reaches 34.64%. Meanwhile, acid and carbonyl contents are substantially decreased, while phenolic species become more prevalent, reflecting a pronounced enhancement in fuel quality. In situ FTIR analysis reveals that PHP pretreatment accelerates the cleavage and transformation of hydroxyl and carbonyl groups, promoting the formation of oxygenated intermediates. Regarding biochar, PHP pretreatment enhances the specific surface area and microporous structure, enriches active functional groups, including hydroxyl, carboxyl, and thus increases the adsorption capacity for 2-naphthol by 18.66 times.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Zhima Yangcuo,Xiaodan Zheng,Yajuan Zhang,Xin Yang,Xinyi Zheng,Hang Zhu,Wenhui Chen,Qihong Cai
Under alkaline conditions with sodium hydroxide (NaOH), both 1-naphthol (1-NAP) and 2-naphthol (2-NAP) transitioned from their molecular forms to ionic forms, resulting in redshifts of their fluorescence spectra. Thus, not only the interference of 2-NAP raman peak was eliminated, but the fluorescence intensity of two naphthols was also enhanced, thereby improving the selectivity and sensitivity of their analysis. Due to their structural similarity, the conventional fluorescence spectra of 1-NAP and 2-NAP overlapped and interfered with each other, precluding their simultaneous measurement without prior separation. In this study, the wavelength difference (Δλ) = 140 nm was selected for synchronous fluorescence spectrometry (SFS) scanning to simplify the spectra. However, the interference of 2-NAP on 1-NAP remained significant. So, the second-order derivative technique combined with SFS was adopted. The method that eliminated the severe interference between 1-NAP and 2-NAP and wastewater background by utilizing spectral parameters. Finally, a new second-order derivative SFS for simultaneous determination of 1-NAP and 2-NAP was first established. The detection limits were 0.0850 ng·mL −1 for 1-NAP and 0.1066 ng·mL −1 for 2-NAP, with linear ranges of 0.5–80 ng·mL −1 and 0.5–50 ng·mL −1 , respectively. Recoveries of two naphthols in wastewater were 87.53%–93.50% (1-NAP) and 89.85%–104.00% (2-NAP). The new SFS established in this research has been successfully applied to the analysis and detection of 1-NAP and 2-NAP residues in wastewater, achieving satisfactory results. It is expected to become a new routine detection method for 1-NAP and 2-NAP.
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