INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 32
·16970-16984
·
IF 3.9
Li Lingfeng,Xiong Yongzhi,Huang Yuxin,Zhang Yiling,Li Chenge,Liu Qi,Zhou Junfang,Wang Yihan,Chen Changzhou,Wang Kui,Jiang Jianchun
In this study, we present a straightforward synthesis
strategy
to prepare transition metal sulfide electrocatalysts supported on
sulfonated carbon nanotube-chitosan-derived carbon aerogel. Highly
dispersed Ni 3 S 2 @CNT, Cu 7 S 4 @CNT, and Co 4 S 3 @CNT were successfully fabricated
and applied for 5-hydroxymethylfurfural (HMF) electrooxidation to
2,5-furandicarboxylic acid (FDCA). Among them, Co 4 S 3 @CNT exhibited remarkable electrocatalytic activity, delivering
a current density of 100 mA cm –2 at a low potential
of 1.367 V (vs RHE) while attaining 99.82% HMF conversion, 99.97%
FDCA selectivity and a Faradaic efficiency of 83.75%. Electrochemical
measurements revealed that Co 4 S 3 @CNT possesses
an electrochemical active surface area (ECSA) of 0.781 μF cm –2 , which is higher than those of Ni 3 S 2 @CNT and Cu 7 S 4 @CNT, implying an increased
population of active sites and enhanced catalytic activity. In-situ
Raman spectroscopy reveals that Co 4 S 3 @CNT undergoes
a progressive reconstruction from Co(OH) 2 to CoOOH under
anodic conditions, with CoOOH formation being significantly delayed
in the presence of HMF, confirming its role as the active phase. Density
functional theory (DFT) calculations further indicate that the excellent
performance of Co 4 S 3 @CNT originates from the
lowest energy barrier (1.84 eV) for the rate-determining catalyst
activation dehydrogenation step, coupled with its pronounced charge-polarization
capability that facilitates HMF preactivation. This work gives a promising
design approach for developing efficient nonprecious metal electrochemical
catalysts toward biomass valorization.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yi Liu,Xingyu Gao,Yongfeng Liu,Rongjun Qu
The design and preparation of adsorbents are crucial in the field of wastewater treatment. The composite adsorbents with chitosan (CTS) and metal organic framework (MOF) were fabricated to enhance the diffusion degree of MOF and acid stability of CTS by heating reflux method and effect of ratio of CTS, Cu 2+ and 2-aminoterephthalic acid of the composite adsorbents on adsorption was investigated. The diffusion degree of MOF on the composite adsorbent (CTS-MOF) was enhanced on the basis of FESEM images. The acid instability of CTS on the CTS-MOF was improved as CTS can partly dissolve in solution with pH lower than 4.0, while the composite was stable. The composite material was used to remove anionic dye methyl orange (MO) from contaminated aquatic environments. The adsorption kinetics showed that the adsorption capacities of CTS-MOF, CTS and MOF for MO with concentration of 200 mg/L were 135.49, 34.84 and 58.95 mg/g, respectively, and the adsorption capacity of CTS-MOF increased to 3.89 and 2.30 times, accordingly, compared to that of CTS and the MOF, due to synergetic effect of CTS and MOF. The adsorption process of CTS-MOF followed pseudo-second-order kinetic model and Langmuir model. In addition, the adsorption was endothermic. For CTS-MOF, the solution pH exhibited slightly small fluctuation on MO adsorption. The presence of NaCl exhibited positive effect for MO adsorption onto the MOF while negative effect for MO onto CTS-MOF, and the influence on the CTS-MOF was much less than that onto the MOF, indicating the salt tolerance of CTS-MOF was better. Adsorption mechanism was analyzed by the FTIR spectra before and after adsorption and quantum chemical calculation by means of independent gradient model based on Hirshfeld partition (IGMH) analysis. And IGMH analysis showed the relative magnitude of coordination effect, hydrogen bonding and π-π stacking involved in the adsorption process. This study provided a valuable method to design and prepare adsorbents with high adsorption efficiencies for organic dyes from aqueous solution.
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Environments
·
2026
·Vol. 13
·期 2
·91
·
IF 4.3
Zheng Tang,Naixing Kang,Dajun Ren,Yongyuan Yang
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been identified as forever chemicals and pose a serious threat to the environment due to their stable C–F bond. The current methods are ineffective or costly for PFAS remediation. In response, this study develops a dielectric barrier discharge (DBD) air plasma system capable of simultaneously treating perfluorooctanoic acid (PFOA)-contaminated wastewater and enhancing waste-activated sludge (WAS) solubilization through the subsequent use of plasma-activated water (PAW). Air plasma achieved 94% PFOA degradation and 32% defluorination within 40 min—substantially outperforming Ar and N2plasma—due to the co-generation of hydrated electrons (eaq−),•OH, and reactive nitrogen species (RNS). Scavenging experiments confirmed that eaq−is the primary initiator of C–F bond cleavage, while H2O2and NO2−synergistically form peroxynitrous acid (ONOOH), further promoting chain-shortening reactions. UPLC-MS identified PFHpA, PFHxA, PFPeA, and PFBA as key intermediates. The air plasma effluent contained high concentrations of NO2−-N and H2O2under acidic conditions, enabling PAW to induce strong oxidative stress on WAS, resulting in significant extracellular polymeric substance (EPS) release (DOC up to 134 mg/L), improved sludge filterability (capillary suction time (CST) reduced by ~85%), and shifts in microbial community. This study presents a dual-functional air plasma approach that enables both PFAS degradation and sludge treatment, improving the overall competitiveness and applicability of plasma technology for advanced wastewater treatment.
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APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Jing Wang,Jingru Liang,Li Jin,Yuxuan Zhou,Yue Gui,Mingxuan Chen,Minmin Wang,Tongming Sun,Yanfeng Tang
The Cu₂O/CoO/FeOOH heterostructure achieves high Faradaic efficiency and ammonia yield at low applied potential. • Further analysis reveals heterointerface‑tuned electronic structure and accelerated synergistic electron transfer. • The Cu₂O/CoO/FeOOH heterostructure exhibits excellent long‑term durability. Electrochemical nitrate into ammonia is a feasible and promising wastewater recovery strategy. In this work, a ternary Cu 2 O/CoO/FeOOH heterogeneous structure catalyst with rich interface has been reasonably designed. In the complex system, the electron-rich Cu active center enhances the adsorption of nitric acid radical ions, while Co and Fe species promote the generation of reacted hydrogen (H*) intermediates. The synergistic effect between multiple active sites effectively reduces the energy barrier of the eight-electron nitrate reduction reaction. Therefore, the optimized catalyst achieved a high Faradaic efficiency (FE) of 95.75% and a significant NH 3 yield of 9.83 mg h −1 cm −2 under the condition at −0.4 V vs. RHE. This study confirms the key role of interface electronic regulation in improving the electroreduction performance of nitrates, and provides a simple and reliable strategy for the rational design and construction of high-efficiency heterogeneous structural electrocatalysts. Download: Download high-res image (151KB) Download: Download full-size image A rationally designed ternary Cu 2 O/CoO/FeOOH heterostructured catalyst abundant in heterogeneous interfaces is reported, in which electron-enriched Cu sites strengthen nitrate adsorption and Co/Fe species facilitate the formation of reactive H* intermediates; the multi-site synergism substantially lowers the energy barrier for the eight-electron nitrate-to-ammonia reduction.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Hao-Peng Lu,Xiao-Cheng Long,Ying-Ge Xu,Zutao Pan,Lei Xian,Ling-Bin Kong
Electrocatalytic nitrate reduction to ammonia can not only effectively help realize the nitrogen cycle in the natural environment, but also be used for the industrial production of ammonia and the treatment of sewage containing nitric acid, thereby achieving wastewater reuse and environmental purification. Converting nitrate to ammonia involves the transfer of eight electrons and is a complex step. With the generation of by-products, exposure to an air environment increases the side reactions, thereby reducing the catalytic efficiency and limiting the application scenarios of the material. Therefore, it is crucial to select a nitrate reduction catalyst that is practical and can be applied to various scenarios. In this work, it is reported that CoSe catalysts have a high ammonia yield of 30.53 ± 3.15 mg h-1 cm-2 in an alkaline medium containing 0.5 mol L-1 NO3- exposed to air, and have a Faraday efficiency of up to 82.80 ± 2.64%, which is even higher than that of argon exposure. In this work, it was found that this phenomenon is due to the substitution of the oxygen reduction reaction (ORR) for the hydrogen evolution reaction (HER), which improves the catalytic efficiency through the modulation of side reactions.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·196
·
IF 5.4
Yue Xiaoyue,Hao Chenxu,Ji Jinhua,Zhang Hui,Peng Yuewen,Bai Yanhong
A dual-mode sensor integrating colorimetric and fluorescent functionalities was constructed to enable sensitive, on-site visual detection of nitrite in food matrices, with CoFeMn hydroxide nanoflowers (CoFeMn HNFs) serving as a novel oxidase-mimicking nanozyme. First, the successful synthesis of CoFeMn HNFs was confirmed through a series of characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Then, the synthesized CoFeMn HNFs, which exhibit remarkable oxidase-like activity, effectively catalyzed the oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB) to its blue oxidized form (ox-TMB) via the generation of superoxide anion radicals (O 2 • ⁻). Its K m and V max values reached 0.399 mM and 2.8 × 10 −7 M·s −1 , respectively, demonstrating not only significantly higher catalytic activity than horseradish peroxidase (HRP) but also efficient catalysis without the requirement of H 2 O 2 . In the presence of nitrite, ox-TMB undergoes a diazotization reaction to form yellow diazo products, accompanied by a distinct fluorescence quenching effect. In the colorimetric mode, the sensor exhibited an excellent linear response to nitrite over the concentration range 0.2 to 40 µg/mL, accompanied by a limit of detection (LOD) as low as 0.063 µg/mL. For the fluorescence mode, a superior linear range of 0.3 to 40 µg/mL was achieved, with a LOD of 0.223 µg/mL nitrite. The results generated by this dual-mode sensor for real food samples were highly consistent with the reference values from the national standard method, thereby confirming its accuracy and practical utility. This work presents a versatile, reliable, and cost-effective nanozyme-based platform that addresses a critical need for sensitive, rapid, and on-site nitrite monitoring in food products, with broad implications for improving food safety surveillance and protecting public health.
Section
Graphical
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COLORATION TECHNOLOGY
·
2026
·
IF 2.6
Lin Cai,Zhaoyong Gao,Benzhi Ju,Wei Ma,Bingtao Tang,Shufen Zhang
Disperse dyes are virtually insoluble in water, necessitating the addition of substantial quantities of dispersants and extensive grinding to produce commercially viable dyes suitable for polyester fabric dyeing. In this study, a series of 2,4-bis(4-sulfonylanilino)-1,3,5-triazin-6-yl starch ethers (BSATS) with varying molecular weights were prepared through non-directive sulfonation of acid-degraded starch in an aqueous medium for application as disperse dye dispersants. The dispersing performance and underlying mechanisms of these dispersants were analysed. The results showed that the BSATS series of dispersants exhibited superior dispersing ability for disperse dyes. Compared with the commercial dispersant NNO (dye filtration time 68 s after treatment, dispersibility rating C, particle size change 68% after high temperature treatment), the dispersants BSATS 3–7 with molecular weights ranging from 13.2 × 10 4 to 21.0 × 10 4 g-mol −1 showed superior dispersibility (dispersibility rating B) and thermal stability (particle size change only 12% after high temperature treatment). Additionally, the BSATS dispersants were employed to disperse C.I. Disperse Orange 30 primary dyes, yielding uniformly dispersed dye liquors for polyester fabric dyeing. In terms of dyeing performance, the dye suspension containing BSATS dispersant achieved a dye uptake of 90% and colour fastness grades of 4–5. This study presents a methodology for the preparation of starch-based high-performance dye dispersants, thereby expanding the efficient utilisation of biomass starch in the printing and dyeing industry.
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Food Science and Technology
·
2023
·
IF 2.602
ZHANG Wanjia,WANG Suya,LAN Man
Powders were prepared from fresh Phyllostachys pubescens bamboo shoots (P. pubescens), Dendrocalamopsis oldhami bamboo shoots (D.oldhami) and Dendrocalamus latiflorus bamboo shoots (D.latiflorus), and their physical, chemical, adsorption and powder properties were determined. All three of these powders were high in dietary fiber and protein, with P. pubescens powder containing the highest concentration of dietary fiber (50.34 ± 0.65 g∙100 g-1). The water holding, oil holding, and swelling capacities of this powder were all higher than those of the other two kinds of powders. The P. pubescens powder also showed the highest capacity to adsorb glucose, cholesterol and nitrite. In addition, the measured repose and slip angles of this powder were lower than those of the other two powders, indicative of it having good fluidity. And the bulk density and tap density of this powder were significantly higher than those of the others as well, indicative of its superior filling property.
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PEST MANAGEMENT SCIENCE
·
2023
·Vol. 79
·期 9
·3133-3140
·
IF 4.1
Rong Ma,Yue-Dan Zheng,Han-Wen Tian,Meng-Meng Chen,Yu-Xin Yue,Qiang Bian,Hua-Bin Li,Dong-Sheng Guo
BACKGROUND Pesticides are indispensable in agriculture and can effectively improve the yields and quality of crops. Due to their weak water solubility, most pesticides need to be dissolved by adding solubilizing adjuvants. In this work, based on molecular recognition of the macrocyclic host, we developed a novel supramolecular adjuvant, called sulfonated azocalix[4]arene (SAC4A), which significantly improves the water solubility of pesticides. RESULTS SAC4A presents multiple advantages, including high water solubility, strong binding affinity, universality, and simple preparation. SAC4A showed an average binding constant value of 1.66 × 10 5 M −1 for 25 pesticides. Phase solubility results indicated that SAC4A increased the water solubility of pesticides by 80–1310 times. The herbicidal, fungicidal, and insecticidal activities of supramolecular formulations were found to be superior to those of technical pesticides, and the herbicidal effects were even better than those of commercial formulations. CONCLUSION Overall results revealed the potential of SAC4A to improve the solubility and effectiveness of pesticides, providing a new development idea for the application of adjuvants in agriculture. © 2023 Society of Chemical Industry.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 8
·e53507
·
IF 3.057
Lilan Huang,Lankun Ma,Haimei Chen,Lei Qiao,Leitao Zhang,Jian Pan,Jinwei Li,Yuzhong Zhang
Developing dislysis membranes with outstanding hemocompatibility is the key of hemodialysis used for curing the kidney malfunction. Herein, polylactic acid (PLA) membrane with high water flux (640.2 L m −2 h −1 ) and bovine serum albumin (BSA) rejection (>97%) is prepared and subsequently modified by heparin-mimetic sulfonated graphene oxide (SGO) via modified mussel-inspired method. The (NH 4 ) 2 Fe(SO 4 ) 2 serves as Fenton catalyst significantly accelerates the oxidized polymerization of dopamine (DA) in DA- g -SGO to form polydopamine- g -SGO (PDA- g -SGO). The uniform immobilization of SGO significantly improves the hydrophilicity and electronegativity of the PLA membranes, inhibiting platelets adhesion. Moreover, the sulfonic group of SGO plays the role of anticoagulant as heparin. The obtained PLA/PDA- g -SGO membrane exhibits excellent hemocompatibility with longer recalcification time (230 s) and lower hemolysis ratio (1.6%) than those of original PLA membrane (120 s, 10.7%). This study demonstrates a potential way to improve the hemocompatibility of polymeric membranes.
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JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Jie Liu,Jinsheng Li,Jingsen Bai,Zhao Jin,Junjie Ge,Changpeng Liu,Wei Xing
Membrane electrode assembly (MEA) is the core component of a proton exchange membrane fuel cell (PEMFC), which largely dictates the final performance of the device. When PEMFCs are in operation, the internal water migration greatly affects the performance output, so better water management in MEA is necessary. Herein, an additional membrane layer containing sulfonic acid-functionalized multi-walled carbon nanotubes (SO 3 -MCNT) has been sandwiched between the commercial Nafion proton exchange membrane and the anode catalyst layer . The newly added composite membrane is able to optimize the water electro-osmotic drag (EOD) and back diffusion (BD) and as well as accelerate the proton transfer , which leads to a substantial improvement in the performance of the MEA. This method is practicable with obvious advantages under the conditions closer to the actual operation of PEMFC.
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ACS Omega
·
2022
·
IF 4.132
Xiaolu Xiong,Chengwang Guo,Gengyang Yan,Bingxin Han,Zan Wu,Yueqian Chen,Shiqi Xu,Peng Shao,Hong Song,Xiyan Xu,Junfeng Han
Water quality guarantee in remote areas necessitates the development of portable, sensitive, fast, cost-effective, and easy-to-use water quality detection methods. The current work reports on a microfluidic paper-based analytical device (μPAD) integrated with a smartphone app for the simultaneous detection of cross-type water quality parameters including pH, Cu(II), Ni(II), Fe(III), and nitrite. The shapes, baking time, amount, and ratios of reaction reagent mixtures of wax μPAD were optimized to improve the color uniformity and intensity effectively. An easy-to-use smartphone app was established for recording, analyzing, and directly reading the colorimetric signals and target concentrations on μPAD. The results showed that under the optimum conditions, the current analytical platform has reached the detection limits of 0.4, 1.9, 2.9, and 1.1 ppm for nitrite, Cu(II), Ni(II), and Fe(III), respectively, and the liner ranges are 2.3–90 ppm (nitrite), 3.8–400 ppm (Cu(II)), 2.9–1000 ppm (Ni(II)), 2.8–500 ppm (Fe(III)), and 5–9 (pH). The proposed portable smartphone-app integrated μPAD detection system was successfully applied to real industrial wastewater and river water quality monitoring. The proposed method has great potential for field water quality detection.
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