International Journal of Electrochemical Science
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2023
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IF 1.5
Weipeng Zhang,Zhe Zhang,Wenwu Li,Xiaodong Huang,Le Ruan,Ling Wu
The synergistic corrosion inhibition effect of phytic acid (PA) and benzyltrimethyl ammonium bromide (BAB) on 1045 carbon steel (CS) in 0.5 M HCl is reported. Electrochemical measurements showed that PA and BAB can reduce the corrosion rate of 1045 CS in HCl solution and act as excellent corrosion inhibitors. The best inhibition efficiency n i of the combination inhibitor of PA with BAB is 90.6%. SEM images of the corroded steel surfaces suggest that the PA and BAB are simultaneously adsorbed on the CS surface to inhibit the corrosion of iron. The synergistic inhibition mechanism is investigated by dynamic simulations and quantum chemistry.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2022
·Vol. 98
·期 2
·498-505
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IF 3.709
Qingping Du,Zuanjia Zhong,Ting Zhang,Yanbin Xu,Guoqing Zhang,Shangquan Wu,Jiaxin Xu
Background Biotricking filtration (BTF) based on absorption and biodegradation of waste gas by microorganisms in a biofilm can be used to degrade with difficulty hydrophobic volatile pollutants. Photocatalysis is a promising technology for the abatement of gaseous contaminants because of its nonselective oxidation of volatile organic compounds; however, photocatalysis technology has the limitations of high energy consumption and low mineralization efficiency. This study, therefore, aimed to investigate the synergistic effects of UV/TiO 2 photocatalysis (PCO) pretreatment and BTF in treating gaseous m -xylene. Results BTF incubated with a mold, Aspergillus sp. S1, was acclimated with m -xylene as the sole carbon source. A combined system of PCO with BTF was developed to remove gaseous m -xylene. The results showed that the startup period was shortened by 3 days in the PCO-BTF combined system compared to that with BTF alone. The removal efficiency reached 73% and 91% for the BTF and PCO-BTF systems respectively when the empty bed residence time was extended to 90 s. In addition, PCO-BTF could withstand transient shock loading of m -xylene of 5000 mg m −3 and gradually restore its decontamination performance. Conclusions PCO pretreatment was effective in the enhancement of the removal capacity of BTF for m -xylene. The PCO-BTF system proposed in this study provides an attractive alternative to abate hydrophobic volatile pollutants. The integration of PCO essentially prompted the capability of Aspergillus sp. S1 in the BTF unit, which paves the way for the treatment of gaseous waste at an industrial scale. © 2022 Society of Chemical Industry (SCI).
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CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Wenqing Du,Yongqian Zheng,Xueyi Liu,Jie Cheng,R. Chenna Krishna Reddy,Akif Zeb,Xiaoming Lin,Yifan Luo
Transition metal oxide anode materials have recently been losing their importance as advanced functional and smart materials due to early capacity decay and sluggish kinetics. In order to address this issue, vacancy engineering approach can be adapted, which can effectively manipulate the electronic structure of transition metal oxide (TMO)-based electrode materials. Herein, a series of MOF-derived oxygen-rich vacancy MFe 2 O 4 /C (M = Ni, Mn, Co) materials are synthesized on a large scale via solvothermal and subsequent calcination treatment for energy storage applications in lithium-ion batteries. All the synthesized O V -NFO (NiFe 2 O 4 ), O V -MFO (MnFe 2 O 4 ) and O V -CFO (CoFe 2 O 4 ) electrodes achieve excellent electrochemical performance, superior multiplier performance and incredible lithium-ion diffusion rate, which was found to be superior than their counterpart electrodes. The oxygen vacancy (O V ) enrichment contribution to higher conductivity was realized by experimental and density functional theory (DFT) calculations results, where it has been established that O V provides additional active sites, accelerates Li + diffusion and improves pseudocapacitive contribution. This vacancy-engineering strategy for modulating electronic structure and reaction kinetics enabled new ideas for the design and execution of other advanced transition metal-based electrode materials.
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Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 34
·6514-6531
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IF 7.571
Yong-liang Jiang,Shiwei Niu,Zhi Lin,Limei Li,Ping Yang,Peng Rao,Lin Yang,Lihong Jiang,Lin Sun
Myocardial infarction (MI) is a common cardiovascular disease that seriously endangers human health and complex pathophysiology (e.g., coronary artery obstruction, myocardial apoptosis, necrosis, inflammation, fibrosis, etc.) is involved. Therein, the loss of cardiomyocytes after MI in adults leads to gradual heart failure, which probably brings irreparable damage to the patient. Unfortunately, due to a cluster of limitations, currently used MI repair approaches always exhibit simple functions, low efficiency, and can hardly match the myocardial ischemia environment and clinical needs. In this study, we selected oncostatin M (OSM), a pleiotropic cytokine belonging to the interleukin-6 family that possesses an important role in cardiomyocyte dedifferentiation, cell proliferation, and regulation of inflammatory processes. Moreover, an injectable hydrogel with pH- and temperature-responsive behavior that can react with the acidic microenvironment of the ischemic myocardium was developed to deliver OSM locally. The functional hydrogel (poly (chitosan-co-citric acid-co-N-isopropyl acrylamide), P(CS–CA–NIPAM)) was fabricated by the facile reversible addition-fragmentation chain transfer polymerization and can be injected into the lesion site directly. After the gelation in situ, the OSM-loaded hydrogel exhibited continuous and localized release of OSM in response to specific pH and changes in MI rats, thereby accelerating angiogenesis and proliferation of cardiomyocytes, inhibiting myocardial fibrosis and improving cardiac function effectively. This study may provide a new perspective for the application of dual-sensitive hydrogels clinically, especially in tissue engineering for MI repair and drug delivery.
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INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Jingfang Zhou,Pifu Gong,Mingjun Xia,Aimin Ji,Lifang Zhang,Huiqiang Wu,Qian Wu
Replacing alkali metals (K, Na atoms) by an alkaline-earth metal (Ba atom), α-Ba3Sc2(BO3)4 (high-temperature phase) is successfully obtained by a molten salt method, taking Ba2K1.6Na0.4Sc2(BO3)4 as the parent template. Although both of them exhibit similar layered structures composed of ScO6 and BO3 units, α-Ba3Sc2(BO3)4 shows largely distorted ScO6 octahedra (Δd = 0.56) forced by the uniform tension of a larger space effect from BaO12 polyhedrons, rather than regular ScO6 octahedra like in Ba2K1.6Na0.4Sc2(BO3)4. Experimental measurements and calculated analyses elucidate that distorted ScO6 octahedra in α-Ba3Sc2(BO3)4, displaying a second-order Jahn–Teller (SOJT) effect, enlarge the experimental birefringence up to 0.14@550 nm, while Ba2K1.6Na0.4Sc2(BO3)4 with regular ScO6 octahedra only shows Δn = 0.11 under the same condition. In addition, other optical and thermal properties of the two title compounds were characterized. The experimental results indicate that Ba2K1.6Na0.4Sc2(BO3)4 and α-Ba3Sc2(BO3)4 are promising birefringent materials.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
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IF 3.764
Tao Wang,Xi Zheng,Yajun Wang,Luyao Zhang,Zhenzhen Zhao,Jiding Li
In this research, polypiperazine-amide (PA) thin film composite (TFC) nanofiltration membranes were successfully prepared via an interfacial polymerization technique atop poly(m-phenylene isophthalamide) (PMIA) supports, which were prepared via the phase separation method. The systematical effects of PMIA substrates’ properties on TFC membranes were first investigated by varying the PMIA concentration. The morphological structure, physicochemical characteristics, and filtration performance of substrates and TFC membranes were evaluated by a series of analytical technologies. Also, results revealed that the changes in PMIA substrate properties had a significant influence on PA barrier layer formation, mainly including PA thickness, topography, pore size, and separation performance. In addition, considering both flux and retention ability to different salts, TFC membranes developed upon the substrate with 14% PMIA concentration exhibited excellent performance.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Min Fan,Jianxu Zhang,Sen Yin,Jingya Li,Ting Gao,Li Li,Yanyan Zhou,Hongfeng Li
Abstract l-Cysteine (Cys) levels are linked to many health issues and serve as critical diagnostic criteria for various diseases. However, their highly specific recognition and determination from complex biological matrices remain challenging due to interference from biothiol-containing analogs, such as homocysteine (Hcy) and glutathione (GSH). Herein, by strategically positioning eight aldehyde groups at the periphery of a dinuclear Eu(III) helicate, we achieved the specific determination of l-Cys via an induced negative circularly polarized luminescence (CPL) signal (gmax ≈ −1.22, 595 nm). 1H NMR and ESI-MS combined with single-crystal X-ray crystallography and DFT calculations revealed that the size match between the periphery pocket in the helicate and the thiazolidine ring formed by l-Cys and aldehyde cyclization contributed to this CPL response, which creates a large energy difference (∼37.6 kcal/mol) between diastereoisomers and a M-helical preference. While the L-Hcy only resulted in a weak and positive signal (glum ≈ 0.15) due to the larger ring size, the GSH was CPL silent due to the non-cyclization reaction. Benefiting from the large glum value, the probe exhibited the high sensitivity for l-Cys in water or bovine serum albumin (BSA), with a detection limit lower than 8.11 × 10–7 M. Additionally, to facilitate commercial applications, a “test strip-like” hydrogel hybrid film was prepared, which still retains sensing capability to l-Cys. This work therefore provides a strategy for l-Cysteine detection by virtue of induced helical chirality of metallosupramolecules and strong lanthanide CPL.
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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2023
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IF 2.7
Shuo Shan,Jie Li,Xuan Zhao,Siwen Pi,Saisai Ma,Qing Wang,Hui Liu,Bangqi Wei,Yuhan Zhang
The primary objective of this study is to enhance the overall magnetic properties of pure barium ferrite through the addition of trace amounts of the light rare earth element Sm. This approach is more cost-effective compared to using heavy rare earth elements. The M-shaped barium ferrite, denoted as Ba 1− x Sm x Fe 12 O 19 , was synthesized using a combination of solid-phase sintering method and high-energy ball milling. The high purity of samples was confirmed by determining their crystal structure using XRD. The internal structure of samples was examined using FTIR, and it was observed that the samples contained tetrahedral and octahedral clusters with corresponding bands at 599 cm −1 and 445 cm −1 , respectively. The appearance of samples was examined using FESEM, and it was found that grains had hexagonal structures. EDS was used to characterize the elemental content of samples, and it was found that the content of Ba decreased with an increase in the content of Sm. The magnetic properties of samples were examined using VSM, and the coercivity reached a maximum value of 3096.22 Oe at a dopant fraction of 0.06, and the saturation magnetization reached a maximum value of 73.115 emu/g. The synthesized material has the potential for utilization in magnetic recording applications.
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BIORESOURCE TECHNOLOGY
·
2023
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IF 11.4
Jiajie Wang,Yu Wu,Caiyun Zhang,Anqi Geng,Zhuqiu Sun,Jiawei Yang,Jinying Xi,Liping Wang,Bairen Yang
The microbial electrolysis cell coupled with the biotrickling filters (MEC-BTF) was developed for enhancing the biodegradation of gaseous m -dichlorobenzene ( m -DCB) through weak electrical stimulation. The maximum removal efficiency and elimination capacity in MEC-BTF were 1.48 and 1.65 times higher than those in open-circuit BTF (OC-BTF), respectively. Weak electrical stimulation had a positive impact on the characteristics of the biofilm. Additionally, microbial community analysis revealed that weak electrical stimulation increased the abundance of key functional genera ( e . g ., Rhodanobacter and Bacillus ) and genes ( e . g ., catA/E and E1.3.1.32), thereby accelerating reductive dechlorination and ring-opening of m -DCB. Macrogenomic sequencing further revealed that electron transfer pathway in MEC-BTF might be mediated through extracellular electroactive mediators and cytochromes.
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Molecular Catalysis
·
2023
·
IF 4.6
Yuanning Yue,Ying Liao,Jiarong Lu,Yue Pan,Meiyu Zhang,Guiyue Chen,Xin Zhou,Xinyu Kuang,Hui Zhao,Xiaobo Chen,Xiang Feng,Hao Yan,Yibin Liu,Chaohe Yang
Recognizing and modifying the acid property-dependent catalytic characteristics of catalysts are of great importance for Prins condensation reaction. Herein, a series of metal-doped M-NH 4 -PW catalysts ( M =Pt, Fe, Ir, Ru) are successfully synthesized for Prins condensation reaction of formaldehyde and propylene to produce 4-methyl-1,3-dioxane. Our findings demonstrate that the catalytic performance of M-NH 4 -PW catalysts is influenced by the chemical nature of metal site properties with different electron transfer abilities. Specifically, the new Lewis acid decorated by Pt metal on 4-H site is more favorable for the selective adsorption of formaldehyde and activation of its C O bond. Additionally, the synergistic effect between Pt metal sites and nearby O in [PW 12 O 40 ] 3− promotes the formation of C C bonds between protonated formaldehyde and propylene. Consequently, the Pt-NH 4 -PW catalyst exhibits high conversion (> 80 %) and simultaneous selectivity towards 4-methyl-1,3-dioxane selectivity (65 %). This strategy may provide valuable insights for developing efficient multifunctional catalysts for Prins condensation reactions.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2021
·Vol. 27
·期 35
·9031-9037
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IF 5.236
Yibo Zhang,Yuying Zheng,Hongbo Geng,Yang Yang,Minghui Ye,Yufei Zhang,Cheng Chao Li
Graphical Novel structured M 2 P 2 O 7 /C (M=Fe, Co, Ni) nanoflake composites are prepared via an organic-phosphors precursor assisted solvothermal method and a post high temperature annealing process, which could deliver superior potassium storage performance. Metal phosphates have been widely explored in lithium ion batteries and sodium ion batteries owing to high theoretical capacities, mild toxicity and low cost. However, their potassium ion battery applications are less reported due to the limited conductivity and the slow diffusion kinetics. Considering these drawbacks, novel structured M 2 P 2 O 7 /C (M=Fe, Co, Ni) nanoflake composites are prepared through an organic-phosphors precursor-assisted solvothermal method and a subsequent high temperature annealing process. The designed Co 2 P 2 O 7 /C composite exhibits the highest rate capacity with 502 mAh g −1 at 0.1 A g −1 and good cyclability for 900 cycles at 1 A g −1 and 2 A g −1 when compared with Ni and Fe based composites. The superior electrochemical performance can be attributed to their unique nanoparticle-assembled nanoflake structure, which can afford enough active sites for K + intercalation. In addition, the robust pyrophosphate crystal structure and the in situ formed carbon composition also have positive effects on enhancing the long-term cycling performance and the electrode's conductivity. Finally, this organic-phosphors precursor induced simple approach can be applied for easy fabrication of other pyrophosphate/carbon hybrids as advanced electrodes.
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CHINESE JOURNAL OF CHEMISTRY
·
2020
·Vol. 38
·期 12
·1703-1708
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IF 3.826
Yuxin Wang,Ling Zhang,Jiaying Bi,Hao Yang,Zhikun Zhao,Daobin Mu,Borong Wu
Summary of main observation and conclusion We successfully prepared the Li-VO 2 (M) nanosheets via a facile lithiation method. After compositing with conductive carbon fibers, the sulfur host (Li-VO 2 (M)@CFs) combines the efficient adsorption ability of the VO 2 (M) with superior electronic conductivity of the carbon fibers. Besides, carbon fiber cloth used as the current collector can provide the 3D electronic channels. Therefore, the coin cells exhibited the superior reversible capacity of 1250 mA h g –1 at 0.2 C and a low capacity decay value of 0.068% per cycle within 416 cycles at 1 C, indicative of the favorable cycling stability. Moreover, even at a high rate of 5 C, it also kept at a high discharge capacity of 401 mA h g –1 . In conclusion, this work discloses an attractive route to reduce the dissolution loss of lithium polysulfides (LiPSs) and enhance the overall performance of Li-S batteries.
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