INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Jiahui Xu,Jia-qi Bai,Wenjie Si,Yunhai Zhang,Jiazhao Tan,Mengdie Cai,Qin Cheng,Song Sun
Non-noble metals have attracted worldwide attention for the catalytic hydrogenation of halonitrobenzene due to their high activity, low price, and abundance on Earth. However, the construction of effective and stable non-noble-metal catalysts for the selective hydrogenation of halonitrobenzene to haloaniline by a simple method remains challenging. Herein, we report a facile one-pot method for the synthesis of N,S-co-doped mesoporous carbon-supported non-noble-metal catalysts through carbonization of a mixture of metallic precursors and 2-aminothiazole in molten ZnCl2. The prepared Co-NSPC catalyst showed excellent activity and selectivity with a turnover frequency of 84.4 h–1 in the hydrogenation of p-chloronitrobenzene to p-chloroaniline. Furthermore, Co–Nx was found to be the main active site for this reaction on the basis of characterization and experimental data, and the introduction of S promoted the formation of Co–Nx sites. Moreover, the Co-NSPC-800 catalyst can be reused at least four times and applied to the hydrogenation of 10 kinds of halogenated nitrobenzenes with excellent selectivity.
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高影响因子
ACS Omega
·
2022
·
IF 4.132
Xiaoyun Zhang,Yinhang Zhang,Yuxin Su,Xiaoyang Wang,Renqing Lv
Heterocyclic Mannich bases, N-(3-oxo-3-phenylpro-pyl)thiazol-2-aminium chloride (DTZA) and N-(3-oxo-3-phenylpropyl)-1H-pyrazol-3-aminium chloride (DPZA), were developed for the corrosion inhibition of N80 steel in a 15 wt % lactic acid solution. Weight loss measurements, electrochemical techniques, surface characterization, and theoretical calculations were combined to investigate their anticorrosion performance and mechanism. The results showed that DTZA exhibited a satisfactory inhibitor efficiency of 97.56% with a dosage of 0.15% at 363 K, while DPZA achieved only 58.3% under the same conditions. Adsorptions of both inhibitors on the metal surface followed the Langmuir model with physical and chemical adsorptions. Based on X-ray photoelectronic spectroscopy (XPS) analysis, DFT calculations, and molecular dynamics (MD) simulations, stronger interactions between DTZA and iron than those in the case of DPZA were revealed, leading to the formation of a compact protective film on the metal surface, which is attributed to the presence of a thiazole ring in the DTZA chemical structure.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Pei Chen,Hui Zhu,Tianhao Na,Yong Yi,Jian Zhou,Tao Duan,Jiehong Lei
The efficient and specific capture of radioiodine vapor during the post-fuel processing is essential for the sustainable development of nuclear energy. In this study, Density Functional Theory (DFT) calculations were employed to investigate the adsorption capabilities and mechanisms of iodine vapor by composite materials (Pyrimidine@ACF, Pyrazole@ACF, and Thiazole@ACF) obtained through functionalization of activated carbon fiber (ACF) with pyrimidine, pyrazole and thiazole moieties. The DFT results indicate that the nitrogen heterocycle 3-aminopyrazole exhibits the highest iodine adsorption energy (-11.06 kJ/mol). Among the active groups on the ACF, the carbonyl moiety (C = O) demonstrates the utmost iodine adsorption energy (-45.04 kJ/mol). The designed composite functional materials show a substantial enhancement in iodine adsorption capability, with Pyrazole@ACF displaying the maximum iodine adsorption energy of -63.53 kJ/mol. The experiments demonstrate that the iodine vapor capture capacity of composite functional materials is significantly enhanced compared to ACF (1.010 g/g). Notably, Pyrazole@ACF demonstrates an iodine vapor capture capacity of 2.586 g/g. The iodine capture mechanism of the composite materials is primarily attributed to the active functional groups on ACF, as well as the charge transfer between the nitrogen heterocycles introduced through functionalization and iodine molecules. This ultimately leads to the capture of iodine molecules by the formation of I 3 - polyiodides. Consequently, the nitrogen heterocycles functionalized activated collagen fiber composite material can be considered as an ideal candidate for efficient and specific capture of iodine vapor in radioactive gaseous effluents.
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Journal of Cleaner Production
·
2018
·
IF 5.651
Guo Lin,Shixing Wang,Libo Zhang,Tu Hu,Jinhui Peng,Song Cheng,Likang Fu,C. Srinivasakannan
A bioadsorbent was synthesized by modifying corn bract with 2-aminothiazole for the selective recovery of gold. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to characterize the bioadsorbent with the aim of understanding the mechanism of adsorption. Adsorption isotherms and kinetics data were determined and modeled. The adsorption capacity of Au(III) was 1668 mg/g, much higher than the values reported in the literature due to the ion exchange and chelation between the amino/thiol groups and Au(III). Additionally, the effect of pH and other ions on the Au(III) adsorption capacity were assessed. The adsorption isotherm was found to be consistent with the Langmuir isotherm model, and the kinetic was consistent with the pseudo-second-order kinetic model . Further regeneration and cyclic adsorption tests were performed to ensure the effectiveness of the bioadsorbent in commercial applications.
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高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 40
·20244-20253
·
IF 7.443
Gui-lin Zhuang,Jia-qi Bai,Xin-yong Tao,Jian-min Luo,Xin-de Wang,Yi-fen Gao,Xing Zhong,Xiao-nian Li,Jian-guo Wang
S,N-co-doped porous carbon (SNPC) materials are good candidates for the cathodic oxygen-reduction reaction (ORR) and lithium-ion batteries (LIBs). However, SNPC gives low yield and is expensive. Herein, we report a new and efficient method for synthesizing a S,N-co-doped mesoporous carbon material through the carbonization of S,N-containing precursors in molten ZnCl2, where ZnCl2 served as the ionic solvent and Lewis acid catalyst. The resultant SNPC-800 showed a mesoporous structure with a specific surface area of 1235 m2 g−1 and a mesopore-size range of 10–45 nm, which were considerably larger than those obtained through the carbonization of ionic liquids and fabrication of graphene oxides. Furthermore, ORR measurements indicated good catalytic activity, comparable to the commercial Pt/C catalyst. Also the SNPC-800 material exhibited excellent catalytic stability, and high methanol tolerance compared to the commercial Pt/C catalyst. Density functional theory calculation results revealed that the catalytic properties originated from the synergistic effect of the S/N dopant and that the main catalytic reaction path followed an associative mechanism. LIB tests further showed high reversible capacity, as well as excellent cycling stability and rate performance.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 41
·期 2
·747-754
·
IF 3.277
Binghai Wang,Juanqiang Wang,Qian Shao,Xingjun Xi,Qiao Chu,Genlai Dong,Yun Wei
A thiazole group containing two kinds of heteroatoms N and S has a large conjugated π bond and strong electronic ability, and it easily binds with metal ions to form metal complexes. In this paper, thiazole as an affinity group was designed to achieve the selective adsorption of heme proteins which have an iron-containing heme group. Thiazole-functionalized magnetic microspheres (Fe3O4@SiO2@AT) were synthesized by immobilizing 2-aminothiazole onto the surface of aminopropyl modified magnetic microspheres through a crosslinking reaction in which glutaraldehyde was a crosslinking agent. The elemental analysis and thermogravimetric data confirmed and quantified the immobilization of the thiazole group. Due to the covalent coordination between the thiazole group (lone pair electrons of the N atom) and the iron ion in the heme group, Fe3O4@SiO2@AT exhibited a high binding capacity for hemoglobin (2.02 g g−1) and a relatively low binding capacity for other proteins (lysozyme as a model protein) without a heme group. Moreover, the whole separation process required only 15 minutes, which was favorable for the separation of unstable proteins. In addition, Fe3O4@SiO2@AT was successfully applied to selectively separate hemoglobin from a binary protein mixture and human blood samples. These results demonstrated that the microspheres had potential use in the separation of heme proteins.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
·
IF 3.615
Gui-lin Zhuang,Jia-qi Bai,Xin-yong Tao,Jian-min Luo,Xiang Zhou,Wen-xian Chen,Xing Zhong,Xiao-nian Li,Jian-guo Wang
S, N-co-doped porous carbon (SNPC) exhibit potential application in fuel cell, supercapacitors and lithium-ion batteries (LIBs) because of synergistic effect of S and N atom. However, SNPC prepared by one-pot method usually features the drawback of low S-content and thereby weakens the synergistic effect both geometrically and electronically. Herein, we reported one facile synthetic approach to prepare high S-content SNPC. In this regard, the introduction of NaH 2 PO 4 into the pyrolysis of S, N-containing precursor is beneficial to confine S atoms in carbon framework. It is found that S-content is 25.05% for SNPPC-700, 12.58% for SNPPC-800, higher than previously reported results. Structural characterizations indicate that NaH 2 PO 4 salt plays an important role. Furthermore, LIBs test shows high S-content SNPPC-800 features the higher capacities of 977.68 mAh g −1 after 50 cycles than those of low S-content SNPC-800 at 100 mA g −1 . Moreover, ORR activity measurements show a slight better performance and cycling durability than low S-content SNPC. In addition, the SNPPC-800 also reveals excellent supercapacitor performance with an specific capacitance of 227.5 F g −1 at 0.5 A g −1 , and kept 160.29 F g −1 via the measurement of 6000 cycles at 10 A g −1 .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Shihui Qiu,Gang Liu,Wei Li,Haichao Zhao,Liping Wang
Impermeable and rigid graphene nanosheet is regarded as the thinnest corrosion protection layer and superior solid lubricant up to now, and has been largely reported and used for metal anticorrosion and wear reduction in both academic and industrial field. Here, we obtain few-layers graphene functionalized by poly (2-aminothiazole) (PAT) with free basal plane defects in organic solvent on the basis of π−π interaction between them. The barrier performance of composite coating with PAT-G hybrids is evaluated by water uptake and electrochemical measurement in 3.5 wt % NaCl solution compared to neat epoxy coating and PAT-based coating. The wear reduction of PAT-functionalized graphene-based coating is investigated via friction test. Composite coating with PAT-G hybrids exhibited excellent anticorrosion performance and wear reduction thanks to the multifunctional graphene and passive effect of PAT. The optimized specimen PAT-G 0.5% shows a superior barrier property during 80 days' immersion and exhibits the lowest wear rate, which is reduced by 69.48% relative to neat epoxy.
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Polymers
·
2018
·Vol. 10
·期 2
·159
·
IF 2.935
Chao Xiong,Shixing Wang,Libo Zhang,Ying Li,Yang Zhou,Jinhui Peng
A new adsorbent(A-PGMA) has been synthesized via functionalizing poly(glycidyl methacrylate) microsphere with 2-aminothiazole and used to adsorb gold ions from aqueous solutions. The adsorbent was characterized by X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), Zeta potential, scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR). The influence factors such as the pH value of the solution, the initial gold ion concentration and the contact time were examined. Simultaneously, the adsorption process of the gold ion on A-PGMA fitted well with the Langmuir and pseudo-second-order models, respectively. The results showed that the maximum adsorption capacity was 440.54 mg/g and the equilibrium time of adsorption was about 3 h under pH 4. Moreover, the adsorbent has a high reusability after five cycles and good selectivity from coexisting ions, including Zn(II), Mg(II), Cu(II), Ge(IV) and B(III). The adsorption mechanisms of gold ions were ion exchange and chelation between the sulfur and nitrogen groups on the surface of A-PGMA and AuCl4−. Therefore, the adsorbent has a great potential for adsorption of gold ions from aqueous solutions.Keywords:adsorption;gold;reusability;mechanism;selectivity
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PubMed
高影响因子
Catalysis Science & Technology
·
2024
·Vol. 14
·期 5
·1167-1180
·
IF 4.4
Jiahui Xu,Xianlang Chen,Jia-qi Bai,Zhengan Miao,Yuan Tan,Nannan Zhan,Huangfei Liu,Mei Ma,Mengdie Cai,Qin Cheng,Song Sun
The selective hydrogenation of halonitrobenzenes (HNBs) to haloanilines (HANs) is an efficient method to prepare key intermediates in the fine chemical industry. It is still a challenge to develop non-noble metal-based heterogeneous hydrogenation catalysts to achieve high activity and selectivity for this reaction. Herein, we reported a N, S co-doped mesoporous carbon supported Co catalyst for hydrogenation of HNBs, the prepared 5%Co/NSPC-800 catalyst showed superior catalytic performance with a TOFs of 203 h−1 and >99.9% selectivity to p-chloroaniline (p-CAN), and it also exhibited wide substrate applicability and can be reused at least 4 times. Furthermore, the reaction mechanism of p-CNB hydrogenation over 5%Co/NSPC-800 was proposed on the basis of kinetic studies, spectroscopic studies, and DFT calculations. The hydrogenation of p-CNB over 5%Co/NSPC-800 followed the condensation route, and Co0 and Co–Nx were the main active sites for this reaction.
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