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Chinese Chemical Letters 2023年第2期34卷 372-375页

作者： Yue Zhang Wei Zhou Ning Xu Guangying Wang Jin Li Kai An Wenchao Jiang Xuelian Zhou Qinglong Qiao Xindong Jiang Zhaochao Xu Liaoning&Shenyang Key Laboratory of Functional Dye and Pigment Shenyang University of Chemical TechnologyShenyang 110142China CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

The unique structure of fluorescent proteins in which the fluorophore is encapsulated by the protein shell to restrict rotation and emit light inspired the screening of chromophores that selectively bind to biomolecules to generate fluorescence. In this paper, we report a curcuminoid-BF2-like fluorescent dye NBF2containing 4-dimethylaniline as an electron-donating group. When this dye is combined with HSA or BSA, the fluorescence is enhanced 90/112-fold, and the fluorescence quantum yield increases from aniline moiety caused by charge transfer after the fluorophore is excited by light. N-BF2has fast and strong binding to HSA or BSA and was found to be reversible in solution and intracellularly. Since N-BF2also has the ability to target lipid droplets, the complex of N-BF2/HSA realizes the regulation of reversible lipid droplet staining in cells.

关键词： Fluorogen aniline TICT HSA Methine dyes

Degradation kinetics and mechanism of aniline by heat-assisted persulfate oxidation

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Journal of Environmental Sciences 2012年第5期24卷 821-826页

作者： Xiaofang Xie Yongqing Zhang Weilin Huang Shaobing Huang College of Environmental Science and Engineering and the Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education South China University of Technology Guangzhou 510006 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou 510275 China Department of Environmental Sciences Rutgers The State University of New Jersey New Brunswick NJ 08901 USA

Oxidation of aniline by persulfate in aqueous solutions was investigated and the reaction kinetic rates under different temperature, persulfate concentration and pH conditions were examined in batch experiments. The results showed that, the aniline degradation followed pseudo first-order reaction model. aniline degradation rate increased with increasing temperature or persulfate concentration. In the pH range of 3 to 11, a low aniline degradation rate was obtained at strong acid system （pH 3）, while a high degradation rate was achieved at strong alkalinity （pH 11）. Maximum aniline degradation occurred at pH 7 when the solution was in a weak level of acid and alkalinity （pH 5, 7 and 9）. Produced intermediates during the oxidation process were identified using liquid chromatography-mass spectrometry technology. And nitrobenzene, 4-4’-diaminodiphenyl and 1-hydroxy-1,2-diphenylhydrazine have been identified as the major intermediates of aniline oxidation by persulfate and the degradation mechanism of aniline was also tentatively proposed.

关键词： persulfate oxidation kinetic mechanism aniline

Degradation and mineralization of aniline by O_3/Fenton process enhanced using high-gravity technology

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Chinese Journal of Chemical Engineering 2018年第7期26卷 1444-1450页

作者： Yuejiao Qin Shuai Luo Shuo Geng Weizhou Jiao Youzhi Liu Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering North University of China Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University

The degradation and mineralization of aniline （AN） using ozone combined with Fenton reagent （O3/Fenton） in a rotating packed bed （RPB） was proposed in this study, and the process （RPB-O3/Fenton） was compared with conventional O3/Fenton in a stirred tank reactor （STR-O3/Fenton） or single ozonation in an RPB （RPB-O3）, Effects of high gravity factor, H2O2 dosage, H2O2 dosing method and initial pH on the AN mineralization efficiency were investigated in the RPB-O3/Fenton process, In addition, the behavior of Fe（Ⅱ） was monitored at different H2O2 dosing methods and pH values. Finally, the optimal operation conditions were determined with high gravity factor of 100, initial pH of 5, Fe（Ⅱ） concentration of 0.8 mmol·L-1 and H2O2 dosage of 2.5 ml. Under these conditions, for aniline wastewater at the volume of I L and concentration of 200 mg· L- 1 ,a fast and thorough decay of AN was conducted in 10 min, and the TOC removal efficiency reached 89% in 60 min. The main intermediates of p-benzoquinone, nitrobenzene, maleic acid and oxalic acid were identified by liquid chromatography/mass spectroscopy （LC/MS）, and the degradation pathways of AN in RPB-O3/Fenton system were proposed based on experimental evidence. It could be envisioned that high-gravity technology combined with O3/Fenton processes would be promising in the rapid and efficient mineralization ofwastewater.

关键词： O3/Fenton process High-gravity technology aniline Degradation mechanisms

Improved photocatalytic activity of surface charge functionalized ZnO nanoparticles using aniline

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Journal of Materials Science & Technology 2021年第17期76卷 1-10页

作者： Chatchai Rodwihok Korakot Charoensri Duangmanee Wongratanaphisan Won Mook Choi Seung Hyun Hur Hyun Jin Park Jin Suk Chung School of Chemical Engineering University of Ulsan680-749.South ICorea Department of Biotechnology College of Life Sciences andBiotechnologyKorea University145 Anam-roSeongbuk-guSeoul02841South Korea Research Center in Physics andAstronomy Faculty of ScienceChiang Mai UniversityChiang Mai50200Thailand

Functionalization of aniline molecules on zinc oxide(ZnO)nanoparticles is reported using a simple impregnation *** ZnO samples were systematically characterized based on morphology,surface and optical properties,and photocatalytic performance towards methyl orange(MO).aniline functionalization increased the surface charge of the modified *** to pristine ZnO,the aniline-functionalized ZnO yielded faster photodegradation of MO,degrading 98.29%of MO in 60 min and superoxide radicals were the major species during the MO photodegradation *** results indicate that the improvement of photocatalytic degradation could be attributed to opposite charge-induced surface ***,protonated amine as a positively charged molecule was expected to increase the surface adsorption of MO(as an anionic dye)on ZnO nanoparticles surfaces,thereby increasing their photocatalytic degradation performance.

关键词： Photocatalysts Surface charge ZnO aniline Methyl orange

Environment-friendly synthesis of N-phenylpiperidine from aniline and 1,5-pentanediol overγ-Al_2O_3 catalyst

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Journal of Natural Gas Chemistry 2008年第4期17卷 383-386页

作者： Wei Tan Chunmei Li Jiacong Zheng Lei Shi Qi Sun Yuhong He Institute of Chemistry for Functionalized Materials Liaoning Normal University Dalian 116029 Liaoning China Liaoyuan Health School Liaoyuan 136200 Jilin China

An efficient environment-friendly synthesis of N-phenylpiperidine was developed from aniline and 1,5-pentanediol over γ-Al2O3 catalyst under atmospheric pressure. The conversion of 1,5-pentanediol reached 97% and the selectivity for N-phenylpiperidine attained 94%. The structure of the catalyst was characterized by NH3-TPD and BET. The influences of calcination temperature of the catalyst and reaction temperature on activity and selectivity of the catalyst were investigated.

关键词： γ-Al2O3 catalyst N-phenylpiperidine aniline 1,5-pentanediol

An internal circulation iron-carbon micro-electrolysis reactor for aniline wastewater treatment:Parameter optimization,degradation pathways and mechanism

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Chinese Journal of Chemical Engineering 2023年第11期63卷 96-107页

作者： Yanhe Han Han Xu Lei Zhang Xuejiao Ma Yang Man Zhimin Su Jing Wang Department of Environmental Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China SUEZ Environmental Technology(Beijing)Company Limited Beijing 100026China Beijing Ecological Environment Assessment and Complaint Center Beijing 100006China

aniline is a vital industrial raw ***,highly-toxic aniline wastewater usually deteriorated effluent quality,posed a threat to human health and ecosystem ***,this study reported a novel internal circulation iron-carbon micro-electrolysis(ICE)reactor to treat aniline *** effects of reaction time,pH,aeration rate and iron-carbon(Fe/C)ratio on the removal rate of aniline and the chemical oxygen demand were investigated using single-factor *** process exhibited high aniline degradation performance of approximately 99.86% under optimal operating conditions(reaction time=20 min,pH=3,aeration rate=0.5 m3·h^(-1),and Fe/C=1:2).Based on the experimental results,the response surface method was applied to optimize the aniline removal *** Box–Behnken method was used to obtain the interaction effects of three main *** result showed that the reaction time had a dominant effect on the removal rate of *** highest aniline removal rate was obtained at pH of 2,aeration rate of 0.5 m^(3)·h^(-1)and reaction time of 30 *** optional experimental conditions,the aniline content of effluent was reduced to 3 mg·L^(-1)and the removal rate was as high as 98.24%,within the 95% confidence interval(97.84%-99.32%)of the predicted *** solution was treated and the reaction intermediates were identified by high-performance liquid chromatography,ultraviolet-visible spectroscopy,Fourier-transform infrared spectroscopy,gas chromatography-mass spectrometry,and ion *** main intermediates were phenol,benzoquinone,and carboxylic *** were used to propose the potential mechanism of aniline degradation in the ICE *** results obtained in this study provide optimized conditions for the treatment of industrial wastewater containing aniline and can strengthen the understanding of the degradation mechanism of iron-carbon micro-electrolysis.

关键词： aniline Iron-carbon micro-electrolysis Circulating fluidized bed Waste water Degradation

ELECTROCHEMICAL COPOLYMERIZATION OF aniline AND AZURE B

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Chinese Journal of Polymer Science 2001年第5期19卷 483-492页

作者： Dan Shan Shao-lin Mu Bing-wei Mao Yong-fang Li Department of Chemistry School of Science, Yangzhou University Yangzhou 225002, China State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University Xiamen 361005 China Center for Molecular Science. Institute of Chemistry Chinese Academy of Sciences, Beijing 100080 China Yangzhou Univ Sch Sci Dept Chem Yangzhou 225002 Peoples R China Xiamen Univ State Key Lab Phys Chem Solid Surface Xiamen 361005 Peoples R China Chinese Acad Sci Inst Chem Ctr Mol Sci Beijing 100080 Peoples R China

The electrochemical copolymerization of aniline and N,N,N'-trimethylthionin (azure B) in aqueous solutions has been carried out using the potential sweep method. The optimum conditions for the coelectrodeposition are that the pH value and the temperature of the electrolytic solution are controlled at 5.57 and 30 degreesC, respectively, and the scan potential range is set between -0.25 and 1.10 V (versus SCE). The copolymerization rate of aniline and azure B is about 3 times larger than that of aniline in the absence of azure B. The copolymerization of aniline and azure B was verified from the results of visible spectra during electrolysis, FTIR spectra and the atomic force microscopy (AFM) images of the polymers. The in situ visible spectrum for the electrolysis of the solution containing aniline and azure B is different from that of the respective aniline and azure B. The FTIR spectrum of the copolymer is not a superposition of that of polyaniline and poly(azure B). The AFM image of the copolymer is different from those of polyaniline and poly(azure B) and is not a mixture of individual polymers. The conductivity of the copolymer synthesized at pH 5.57 is four orders of magnitude higher than that of polyaniline synthesized under the same conditions, but in the absence of azure B. The electrochemical properties of the copolymer are mainly attributed to polyaniline, but the copolymer has a better electrochemical reversibility and a much faster charge transfer than those of polyaniline.

关键词： aniline azure B electrochemical copolymerization characterization of copolymer electrochemical property

Unraveling weak interactions in aniline-pyrrole dimer clusters

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Science China Chemistry 2016年第10期59卷 1270-1276页

作者： Chengqian Yuan Pan An Jing Chen Zhixun Luo Jiannian Yao Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of Sciences Beijing 100049China

Weak intermolecular interactions in aniline-pyrrole dimer clusters have been studied by the dispersion-corrected density functional theory(DFT) calculations. Two distinct types of hydrogen bonds are demonstrated with optimized geometric structures and largest interaction energy moduli. Comprehensive spectroscopic analysis is also addressed revealing the orientation-dependent interactions by noting the altered red-shifts of the infrared and Raman activities. Then we employ natural bond orbital(NBO)analysis and atom in molecules(AIM) theory to have determined the origin and relative energetic contributions of the weak interactions in these systems. NBO and AIM calculations confirm the V-shaped dimer cluster is dominated by N.H···N and C.H···π hydrogen bonds, while the J-aggregated isomer is stabilized by N.H···π, n→π* and weak π···π* stacking *** noncovalent interactions are also demonstrated via energy decomposition analysis associated with electrostatic and dispersion contributions.

关键词： weak intermolecular interactions aniline pyrrole dimer cluster hydrogen bonding nature bond orbital energy decomposition

Competitive and cooperative adsorption behaviors of phenol and aniline onto nonpolar macroreticular adsorbents

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Journal of Environmental Sciences 2005年第4期17卷 529-534页

作者： ZHANGWei-ming CHENJin-long PANBing-cai ZHANGQuan-xing StateKeyLaboratoryofPollutionControlandResourcesReuse SchooloftheEnvironmentNanjingUniversityNanjing210093China

The adsorption behaviors of phenol and aniline on nonpolar macroreticular adsorbents(NDA100 and Amberlite XAD4) were investigated in single or binary batch system at 293K and 313K respectively in this study. The results indicated that the adsorption isotherms of phenol and aniline on both adsorbents in both systems fitted well Langmuir equation, which indicated a favourable and exothermic process. At the lower equilibrium concentrations, the individual amount adsorbed of phenol or aniline on macroreticular adsorbents in single-component systems was higher than those in binary-component systems because of the competition between phenol and aniline towards the adsorption sites. It is noteworthy, on the contrast, that at higher concentrations, the total uptake amounts of phenol and aniline in binary-component systems were obviously larger than that in single-component systems, and a large excess was noted on the adsorbent surface at saturation, which is presumably due to the cooperative effect primarily arisen from the hydrogen bonding or weak acid-base interaction between phenol and aniline.

关键词： macroreticular adsorbent phenol aniline competitive adsorption cooperative adsorption

Biodegradation of aniline by Candida tropicalis AN1 isolated from aerobic granular sludge

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Journal of Environmental Sciences 2011年第12期23卷 2063-2068页

作者： Dianzhan Wang Guanyu Zheng Shimei Wang Dewei Zhang Lixiang Zhou Department of Environmental Engineering College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 China Department of Biology Hong Kong Baptist University Hong Kong 999077 China

aniline-degrading microbes were cultivated and acclimated with the initial activated sludge collected from a chemical wastewater treatment plant. During the acclimation processes, aerobic granular sludge being able to effectively degrade aniline was successfully formed, from which a preponderant bacterial strain was isolated and named as AN1. Effects of factors including pH, temperature, and second carbon/nitrogen source on the biodegradation of aniline were investigated. Results showed that the optimal conditions for the biodegradation of aniline by the strain AN1 were at pH 7.0 and 28–35°C. At the optimal pH and temperature, the biodegradation rate of aniline could reach as high as 17.8 mg/（L·hr） when the initial aniline concentration was 400 mg/L. Further studies revealed that the addition of 1 g/L glucose or ammonium chloride as a second carbon or nitrogen source could slightly enhance the biodegradation efficiency from 93.0% to 95.1%–98.5%. However, even more addition of glucose or ammonium could not further enhance the biodegradation process but delayed the biodegradation of aniline by the strain AN1. Based on morphological and physiological characteristics as well as the phylogenetic analysis of 26S rDNA sequences, the strain AN1 was identified as Candida tropicalis.

关键词： aniline aerobic granular sludge biodegradation Candida tropicalis AN1