CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Kaidi Guo,Mei Hong,Jianzhong Jiang
C₁₄N-TCA, as a kind of carboxylate surfactant, could response to CO 2 below pH 8.6. • Unique bond cleavage mechanism enables faster and more efficient CO₂-induced demulsification. • Benefited from hydrogen bonds, C₁₄N-TCA possesses high solubility and surface activity Alkaline environments are widely encountered in fields such as metal cleaning, textiles and papermaking. However, it remains a challenge to develop temporarily stable emulsions that can not only maintain satisfactory stability in alkaline media but also achieve rapid demulsification under the similar alkaline conditions. In this paper, a cleavable carboxylate surfactant (sodium N-tetradecyl-1-carboxylate-1-hexylene-2-carboxamide, abbreviated as C 14 N-TCA) was synthesized. C 14 N-TCA stabilized O/W emulsions at only 0.03 mM and exhibited excellent foaming properties (initial volume 58 mL, half-life 40 h at 5 mM in 10 mL samples), owing to its intramolecular amide groups that formed intermolecular hydrogen bonds. Unlike other carboxylate surfactants that required a pH below 5 to convert from carboxylate to carboxylic acid, C 14 N-TCA underwent structural dissociation at approximately pH 8.6 upon brief CO₂ bubbling, thus enabling rapid demulsification. The CO₂ response rate of C 14 N-TCA was 5-fold and 30-fold faster than that of sodium palmitate (SP) and sodium 3,3′-(dodecylazanediyl) dipropionate (Di-NDBIa), respectively. C 14 N-TCA was applicable to the cleaning of oil-contaminated alkaline soil, as it not only exhibited superior washing efficiency to the conventional surfactant sodium dodecyl sulfate (SDS), but also allowed demulsification and surfactant recovery through CO₂ trigger post-cleaning. This study provided insights into the structural design of CO₂-responsive carboxylate surfactants and held potential applications in fields requiring the temporary stabilization of emulsions or foams under alkaline conditions. Download: Download high-res image (242KB) Download: Download full-size image
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高影响因子
CRYSTAL GROWTH & DESIGN
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2021
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IF 4.076
Lei Wang,Xudong Liu,Xiaoguo Bi,Zhixin Ma,Jinsheng Li,Xudong Sun
(Ln + Nb) co-doped TiO2 polycrystalline ceramics possess remarkable dielectric behaviors, but their origin is still not fully understood. Compared to ceramic materials, a single crystal could keep most of the original material’s properties and eliminate interference due to grain boundaries and pores, thereby useful for exploring the origin of the material’s properties. Here, Ga3+ with a radius close to that of the Ti4+ ion was selected as an acceptor ion to study the properties. To this end, rutile single crystals and (Nb + Ga) co-doped rutile single crystals were prepared by the Verneuil method. The permittivity of the doped single crystal at frequencies from 20 Hz to 2 MHz was found to be greater than 15,000, and the dielectric loss was kept below 0.08. The latter value was much smaller than the reported values of rutile single crystal samples. Electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy indicated significantly enhanced dielectric properties, mainly attributed to the highly localized electron-pinned defect dipoles rather than the surface barrier layer capacitor effect. The electrons tightly bounded by the local electric dipole defect clusters can only range over a very small distance, which made the doped crystal have a large dielectric constant over a wide frequency range and maintain a low dielectric loss. In sum, the use of single crystals as a research object greatly provided insights into the origin and optimization of giant dielectric properties of TiO2-based materials.
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ACS Applied Materials & Interfaces
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2016
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IF 7.145
Xubo Zhao,Mingzhu Qi,Shuo Liang,Kun Tian,Tingting Zhou,Xu Jia,Jiagen Li,Peng Liu
Novel photo- and pH dual-sensitive amphiphilic copolymers containing photolabile o-nitrobenzyl (NB) groups were designed via combination of ATRP, hydrolyzation, and simple esterification reaction and self-assembled into stimuli-regulated amphiphilic micelles in aqueous solution. On the basis of the optimization of the morphology and particle size of the micelles via modulating the number of the photocleavable o-nitrobenzyl acrylate (NBA) units, the unique ones assembled from PEG43-b-P(AA76-co-NBA35-co-tBA9) with an average hydrodynamic diameter (Dh) of 163 nm was selected as a potential drug delivery system (DDS) for UV-triggered delivery of doxorubicin (DOX). The micelles possessed a favorable drug-loading capacity (DLC) of 27.5%, with the hydrodynamic diameter of 213 nm after DOX-loading. Most importantly, the DOX-loaded PEG43-b-P(AA76-co-NBA35-co-tBA9) micelles exhibited a cumulative DOX release ratio of only 3.69% in the simulated physiological medium within 6 days without UV-irradiation, indicating their potential as leakage-free DDS. As in the acidic media mimicking the tumor microenvironment, a high cumulative DOX release ratio of 74.70% was achieved within 6 days after UV-irradiation for 20 min, showing a sustained release behavior. Under UV-irradiation, the photolabile o-nitrobenzyl moieties were cleaved off, the amphiphilic copolymer transformed into a water-soluble polymer, favoring the metabolism of drug carriers, and the micelles were demicellized to accelerate the drug release in a triggered or on-demand manner.
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PubMed
高影响因子
ANALYST
·
2015
·Vol. 140
·期 13
·4626-4635
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IF 4.107
Zian Lin,Ruifang Yu,Wenli Hu,Jiangnan Zheng,Ping Tong,Hongzhi Zhao,Zongwei Cai
Combining free radical polymerization with click chemistry via a copper-mediated azide/alkyne cycloaddition (CuAAC) reaction in a “one-pot” process, a facile approach was developed for the preparation of a poly(3′-azido-3′-deoxythymidine-co-propargyl methacrylate-co-pentaerythritol triacrylate) (AZT-co-PMA-co-PETA) monolithic column. The resulting poly(AZT-co-PMA-co-PETA) monolith showed a relatively homogeneous monolithic structure, good permeability and mechanical stability. Different ratios of monomers and porogens were used for optimizing the properties of a monolithic column. A series of alkylbenzenes, amides, anilines, and benzoic acids were used to evaluate the chromatographic properties of the polymer monolith in terms of hydrophobic, hydrophilic and cation-exchange interactions, and the results showed that the poly(AZT-co-PMA-co-PETA) monolith exhibited more flexible adjustment in chromatographic selectivity than that of the parent poly(PMA-co-PETA) and AZT-modified poly(PMA-co-PETA) monoliths. Column efficiencies for toluene, DMF, and formamide with 35 000–48 000 theoretical plates per m could be obtained at a linear velocity of 0.17 mm s−1. The run-to-run, column-to-column, and batch-to-batch repeatabilities of the retention factors were less than 4.2%. In addition, the proposed monolith was also applied to efficient separation of sulfonamides, nucleobases and nucleosides, anesthetics and proteins for demonstrating its potential.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Longlong Jiang,Yanjun Li,Donghua Liu,Yue You,Jin Chen,Donghai Ding,Guoqing Xiao
Aiming to prepare high performance zirconia fibers efficiently, a novel yttria-alumina co-doped zirconia (YADZ) fiber with improved flexibility, outstanding thermal stability and insulation performance was fabricated by centrifugal spinning. High efficiency for preparing ceramic fiber was achieved by the centrifugal spinning, in which the spinnable solution was dropped into rotating spinning disc. The zirconia was stabilized as the t-ZrO 2 and the grain size was decreased, because of the co-doping of yttria and alumina. The cyclic loading and thermal insulation tests indicated that the YADZ fibers has excellent compression resilience, high temperature resistance and thermal insulation performances. This work provides a feasible measure for the fabrication of zirconia fibers high efficiently with improved performance that can be applied to thermal insulation.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
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IF 4.1
Zutao Zhang,Peiyuan Xiao,Jinping Mei,Xinyu Zhang,Duoduo Chen,Chenlu Jiang,Rong Huang,Qiufang Yao,Shiqing Sun
To address the challenge of high energy consumption (EC) in electrocatalytic nitrate reduction (ERN) for ammonia (NH 3 ) synthesis, this study proposes a dual strategy: engineering advanced anode materials and replacing the sluggish oxygen evolution reaction (OER) with the thermodynamically favorable urea oxidation reaction (UOR). A three-dimensional nanosheet Co-doped Ni 3 S 2 /NF (Co-Ni 3 S 2 /NF) self-supporting anode was prepared via a facile hydrothermal method. Co doping transformed the morphology from rod-like (Ni 3 S 2 /NF)) to nanosheet flower-like (Co-Ni 3 S 2 /NF), which quantitatively increased the BET surface area and electrochemical active surface area (ECSA) by approximately 7.6 and 14 times, respectively, thereby exposing a greater number of active sites. XRD revealed a ∼ 0.4° positive shift due to lattice contraction (Co 3+ radius 0.545 Å < Ni 2+ radius 0.69 Å), while a 3.1 cm −1 Raman shift indicated strengthened Ni S bonds and enhanced charge transfer. Consequently, the anode exhibited a large electrochemical active surface area (119.54 cm 2 ) and low charge-transfer resistance. It delivered superior catalytic activity, with an OER overpotential 86 mV lower than commercial Pt at 10 mA cm −2 , and a further 149 mV reduction when switched to UOR. Turnover frequency (TOF) analysis revealed that the enhanced performance originated predominantly from the increased density of active sites rather than their intrinsic activity. In combination with a Mn-CoNiP/NF cathode, UOR substitution reduced EC by 21.7 % while maintaining high NH 3 Faradaic efficiency (FE > 98 %), selectivity (SE > 95 %), and a yield rate of 1289.8 mg h −1 g −1 at −0.58 V vs. RHE. The system also demonstrated stable performance over 76 h. These findings highlight the potential of anode modulation via morphology engineering to lower energy demand in ERN, offering a sustainable strategy for efficient NH 3 production and nitrate remediation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yi Wang,Pei Liu,Zhen Ding,Shuai Yin,Zhiqiang Li,Zhanpeng Liu,Fenghua Liu
To address the problem of narrow bandwidth in conventional electromagnetic wave (EMW) absorbing materials, which severely limits their practical applications. We proposed an integrated strategy that combined microstructural regulation of multi-dimensional composites with macroscopic structural design. A ternary Co/HNTs/GO composite was fabricated, in which one-dimensional halloysite nanotubes (HNTs) acted as a lightweight framework, two-dimensional graphene oxide (GO) established a conductive network, and Co nanoparticles introduced magnetic loss. This multi-dimensional synergistic architecture enhanced interfacial polarization, conductive pathways, and magnetic loss. After calcination optimization, the composite achieved a minimum reflection loss (RL min ) of −57.52 dB with an effective absorption bandwidth (EAB) of 5.02 GHz. Moreover, the absorption frequency was tuned across 4–18 GHz by varying the sample thickness from 2 to 5 mm. In addition, a step-pyramid structure optimized by electromagnetic simulation further expanded the EAB to 12.4 GHz (5.6–18 GHz), fully covering the X and Ku bands. This integrated material-structure strategy provided a promising paradigm for the rational design of broadband and high-performance EMW absorbers.
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高影响因子
FUEL
·
2025
·
IF 7.5
Guoyang Zhao,Yafei Guo,Pu Huang,Zhouzhou Zhang,Chuanwen Zhao
Developing highly efficient and robust catalysts for low-temperature CO oxidation is essential for CO abatement in sintering flue gas. CuO-Co 3 O 4 catalysts incorporated with transition metal oxides (TMOs) of CeO 2 , ZrO 2 , NiO or Fe 2 O 3 were synthesized using the sol–gel method. The crystalline structure, morphology, electronic structure, surface active sites and redox properties of the composite catalysts were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), CO temperature-programmed desorption (CO-TPD), H 2 temperature-programmed reduction (H 2 -TPR), and O 2 temperature-programmed oxidation (O 2 -TPO). The influence of incorporating TMO on CO oxidation performance of the composite catalysts was thoroughly investigated. Results indicated that incorporating CeO 2 and ZrO 2 enhanced the CO oxidation activity of CuO-Co 3 O 4 significantly, achieving notably low T 100 temperatures of 134 °C and 150°C. The desired CuO-Co 3 O 4 -CeO 2 and CuO-Co 3 O 4 -ZrO 2 composite catalysts also showed outstanding CO oxidation kinetics performance with low activation energies of 25.36 and 26.41 kJ/mol, and remarkable time-on-stream stability, sustaining a near 100 % CO conversion rate for up to 25 h. The superior CO oxidation performance was associated with the smaller crystallite sizes, uniformly dispersed active sites, abundant oxygen vacancies, and enhanced redox properties, all of which stemmed from the strengthened interfacial interactions among the metal oxides upon CeO 2 and ZrO 2 incorporation. These findings offer valuable insights into the structure–property-activity relationships of the CuO-Co 3 O 4 -TMO composite catalysts, positioning the CuO-Co 3 O 4 -CeO 2 and CuO-Co 3 O 4 -ZrO 2 samples as promising candidates for low-temperature CO oxidation in sintering flue gas treatment.
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高影响因子
BIOMASS & BIOENERGY
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2026
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IF 7
Yanjun Hu,Chong Yang,Fan Yu,Qianqian Guo,Xingxuan Zhang,Wei Bao,Kitae Baek,Rufei Lu,Frederik Ronsse
Co-pyrolysis is an effective way to achieve high-value utilization of biomass and waste plastics. To overcome the limitations of asynchronous heat transfer in traditional co-pyrolysis processes, a ternary molten carbonate system (Li 2 CO 3 –Na 2 CO 3 –K 2 CO 3 ) was used as the reaction medium to study the effects of temperature (450–550 °C) and feedstock ratio (CS:PE = 3:1–1:3) on the co-pyrolysis products of corn stover (CS) and polyethylene (PE) plastic. The molten-salt environment facilitated synchronized decomposition of CS and PE plastic, effectively suppressing polycondensation and coking reactions while promoting hydrodeoxygenation of functional groups and C–O bond cleavage. Moreover, alkaline sites provided by alkali-metal cations catalyzed more complete secondary cracking and reforming of volatiles, resulting in an increase in gas production and a decrease in bio-oil and biochar production. Meanwhile, the fractions of H 2 and CO in the syngas were enriched, the hydrocarbon content in the pyrolysis bio-oil increased, and oxygenated compounds such as alcohols, aldehydes, and ketones were markedly reduced. Additionally, the templating and etching effects of the molten salt improved the structural ordering of the biochar, lowered its O/C ratio, and promoted a transition from microporous to mesoporous architecture. Notably, the synergistic effect between CS and PE was most pronounced at 550 °C with a 1:1 blending ratio, where the H 2 content reached 29.26 vol% (108.11 mL g −1 ) and the hydrocarbon fraction in the bio-oil increased to 62.52%. Overall, molten salt-assisted co-pyrolysis provides a promising strategy for the targeted production of H 2 /CO-rich syngas, low-oxygen bio-oil, and structurally optimized biochar from biomass and waste plastics.
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高影响因子
Nanoscale
·
2026
·
IF 5.2
Yaxin Xu,Zhongshuang Xu,Huanran Miao,Zhimao Yang,Chuncai Kong,Qikui Fan
Controlled phase evolution in catalytic architecture design remains challenging for selective CO2-to-formate conversion using non-precious metals. We present a sequential plasma-electrochemical strategy converting BiOCl precursors into nanoporous Bi networks. Plasma treatment of BiCl3-C yields metastable BiOCl with atomic disorder and mesopores; subsequent electrochemical activation reconstructs it into interconnected Bi nanoporous structures (20-50 nm pores) for efficient CO2 reduction. The catalyst affords 93.4% formate Faradaic efficiency at 300 mA cm -2 , >90% selectivity over 100-500 mA cm -2 , and only 3.2% FE loss in 10 h-outperforming thermal Bi catalysts by ~13.3 points in retention. Operando spectroscopy and simulations show plasma-induced lattice distortions lower the reconstruction barrier, creating electric field-enhanced porous Bi that concentrates K + and stabilizes *OCHO -, promoting formate while suppressing HER. This work establishes a paradigm for metastable electrocatalyst design via coupled non-equilibrium synthesis and electrochemical reconstruction, enabling scalable CO2 conversion at industrially relevant currents.2
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122002
·
IF 7.5
Qian Zhang,Shiyun Xu,Qingjun Fan,Jiaojiao Zhang,Xiaofeng Zhou,Tianran Sheng,Fuying Hao,Liangquan Sheng,Zhaodi Liu,Huajie Xu
Lattice strain is commonly acknowledged as an effective strategy for tuning the catalytic activity of transition metals, yet its direct impact on Fenton-like reactions remains not fully understood. Herein, we introduce compressive strain into CoMn 2 O 4 via thermal expansion effects in conjunction with a component regulation strategy to enhance peroxymonosulfate (PMS)-based Fenton-like activation. Structural analysis reveals that the compressively strained features enhance metal-oxygen bond coupling and induces the formation of a substantial amount of oxygen vacancies, which promote PMS adsorption and interfacial charge transfer. The obtained CoMn 2 O 4 (2:1)/PMS system demonstrates efficient and stable removal of organic pollutants via dominant nonradical pathways ( 1 O 2 ), and the reaction kinetics was enhanced from 0.078 min −1 to 0.264 min −1 , and the removal rate for sulfadiazine (SD) was as high as 99.8% within 30 min after five cycles. Furthermore, the remarkable feasibility of the CoMn 2 O 4 (2:1)/PMS system for practical wastewater treatment in real river water and pharmaceutical effluents was demonstrated, particularly through the development of a catalytic membrane filtration system and an in-situ floating water treatment device. This study offers new insights into the design of high-performance PMS activation catalysts via lattice strain engineering.
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Zhen Meng,Huoxing Huang,Shurui Xu,Hang Chen,Xiaobo Fu,Junling Tu,Baizeng Fang,Wenbo Liao,Guoyu Zhong
Precise monitoring is of great significance for diabetes management. In contrast to enzyme-based glucose sensors, nonenzymatic ones offer advantages such as improved stability, higher sensitivity, and reduced manufacturing expenses. In the present research, nitrogen-doped carbon nanotube-encapsulated cobalt particles (Co@NCTs-800) were synthesized via a high-temperature pyrolysis and applied to high-efficiency glucose detection. This material benefits from a large number of Co 4+ active sites formed by electrooxidation, along with the high surface area and conductivity of the N-doped carbon nanotube matrix. As a result, Co@NCTs-800 showed outstanding electrocatalytic properties, achieving remarkable sensitivity reaching up to 141.3 μA mM −1 cm −2 , a rapid response duration of merely 1.9 s, along with a minuscule detection threshold of 2.3 μM. The sensor also demonstrated strong resistance to various interfering substances, good stability and reproducibility (RSD = 3.24%). Furthermore, reliable glucose detection in real beverage samples confirmed the practical applicability of the proposed sensor. The successful fabrication of cobalt particles encapsulated in nitrogen-doped carbon nanotubes offered in-depth understanding regarding the advancement of highly efficient non-enzymatic electrochemical glucose sensing.
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高影响因子
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