CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Pengfei Wang,Linghua Xu,Lianjie Zhao,Xuefei Cao,Shaoni Sun
Severe environmental risks from oil extraction leaks and solvent-containing wastewater have created an urgent need for efficient oil-water separation materials. Cellulose nanofibril (CNF) aerogels are regarded as promising candidates for oil-water separation owing to their low weight, high porosity, and excellent adsorption capabilities. However, the limited surface functionality of CNF restricts their development in functional aerogel materials. Herein, three types of surface-quaternized CNF (CCNF-Q 16 , CCNF-Im 8 , and CCNF-BnMe 2 ) were synthesized via surface chloroacetylation, followed by quaternization with different tertiary amines. Antibacterial results showed that all the prepared quaternized CNFs possessed excellent antibacterial activity, and the antibacterial rate of CCNF-Q 16 achieved 100% against both Escherichia coli and Staphylococcus aureus . CCNF-Q 16 was cooperated with sodium alginate to fabricate an aerogel, which was further hydrophobically modified using methyltrimethoxysilane. The aerogel exhibited low density (0.027 g cm −3 ), high mechanical strength (138.2 kPa), and excellent adsorption capacity for oils (up to 48.1 g g −1 ). Moreover, it had long-term antibacterial activity and retained an antibacterial rate of 94.3% even after 15 consecutive oil-water separation cycles. This work provides a new strategy for synthesizing surface-quaternized CNFs and highlights the potential of the modified CNFs as sustainable and reusable antibacterial aerogel materials for oil-water separation and environmental remediation.
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PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Wenbo Sui,Yijing Chen,Yingnan Wang,Han Feng,Chunhong Zhang,Lei Su,Lei Shang
Commercial epoxy resins (EP) face key challenges such as flammability, brittleness, poor processability, and incompatibility, limiting their widespread use. This study presents the synthesis of phosphorus-based ionic liquid curing agents using n-Octyl phosphonic acid (OPA) and various imidazole derivatives through a supramolecular assembly strategy. The design of these curing agents aims to improve the flammability, brittleness, and processing performance of EP. The results show that ZMI, 1-ZMI, and B-ZMI, due to the inherent properties of ionic liquids, exhibit excellent compatibility with EP. Compared to EP/IM, EP/1-EIM, and EP/BIM, the mechanical and flame-retardant properties of EP/ZMI, EP/1-ZMI, and EP/B-ZMI are significantly enhanced, with all samples achieving UL-94 V-0 ratings. Additionally, the ionic bonds exhibit a “molecular switch” effect, extending the processing time of EP/ZMI, EP/1-ZMI, and EP/B-ZMI. Notably, EP/1-ZMI, where only the nitrogen at the 3-position of imidazole participates in the curing reaction, remained unchanged for 360 min at 60 °C, but rapidly gelled in just 4.5 min at 150 °C. This effect was not observed with other imidazole derivative curing agents with different substituents. In conclusion, all three curing agents effectively enhanced the mechanical and flame-retardant properties of EP, with 1-ZMI demonstrating superior processability. This approach offers a simple yet effective strategy for enhancing flame retardancy and toughness, with strong potential for industrial applications.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·289
·
IF 38.5
Pan Weichun,Wu Jihuai,Pan Jiexi,Wei Shanyue,Tan Lina,Li Wenjing,Wang Deng,Liu Xuping,Xie Yiming,Lin Jianming,Lan Zhang
The improvement in efficiency and stability of inverted perovskite solar cells (PSCs) is primarily constrained by the charge-carrier and energy losses at the interface of perovskite active layer/charge-carrier transport layers. Herein, a kind of dipolar molecule, 4-aminocyclohexanone hydrochloride (ACHCl), is introduced to the surface of perovskite films in PSCs with p-i-n structure. This surface modification ingeniously utilizes the surface defects of perovskite films to anchor the dipolar molecule, thus inducing surface polarization, which not only effectively reduces interfacial defects but also optimizes the energy-level alignment between the interfaces. Specifically, the carbonyl group and chloride ion on ACHCl anchors on the uncoordinated lead ion defects and fills in the halide vacancies on perovskite surface, respectively, which effectively alleviates the trap-state density, thereby reducing the carrier losses caused by defect-assisted recombination at the interface of perovskite layer/hole transport layer. Meanwhile, the anchoring effect of ACHCl facilitates the formation of a relatively ordered cation-dipole layer and induces surface polarization, resulting in more favorable energy-level alignment and enhanced charge-carrier extraction, ultimately reducing interfacial energy losses. Consequently, the effective reduction in interfacial losses facilitates the ACHCl-modified devices to achieve a power conversion efficiency of 26.12% and improved stability.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Tianle Zhang,Changqing Chu,Wenjuan Bai,Yan He
CO 2 -assisted oxidative dehydrogenation of propane (CO 2 –ODHP) is a promising route to overcome the thermodynamic limitations of conventional propane dehydrogenation while enabling CO 2 utilization. However, PtSn/SiO 2 catalysts still suffer from rapid deactivation under CO 2 –ODHP conditions, the origin of which remains poorly understood. Herein, we systematically elucidate the deactivation mechanism of PtSn/SiO 2 catalysts and propose a silica encapsulation strategy to simultaneously suppress metal sintering and refractory coke formation. Although the introduction of CO 2 significantly reduces overall coke deposition, the PtSn/SiO 2 catalyst exhibits accelerated deactivation due to severe nanoparticle sintering and the accumulation of highly graphitized carbon species. By applying a controlled SiO 2 overcoating via a modified Stöber method, PtSn nanoparticles are effectively stabilized through the formation of robust Sn–O–Si anchoring linkages. An optimal silica loading of 5 wt% affords the Si(5)@PtSn/SiO 2 catalyst with a dramatically reduced deactivation rate constant (0.007 h⁻¹), while maintaining high propylene selectivity. Comprehensive TGA, Raman, and GC–MS analyses reveal that long-chain organosilane species (C 29 H 62 O 2 Si) constitute the key precursor for soluble coke species associated with silanol sites under CO 2 –ODHP conditions. The formation of these species is strongly correlated with the density of isolated surface silanol groups, which promote Si–O–C bond formation and permanently anchor coke precursors on the catalyst surface. The silica overcoating effectively modulates isolated silanol environment via enhanced hydroxyl condensation, thereby suppressing the generation of organosilane-derived coke nuclei. This work provides molecular-level insight into coke evolution on silica-supported Pt catalysts and demonstrates that balancing metal confinement with surface hydroxyl chemistry is critical for designing durable Pt-based catalysts for CO 2 -assisted propane dehydrogenation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Riji Qiu,Nong Jiang,Qiuwen Mao,Mei Chen,Xiaofeng Fang,Fang Li,Xingran Zhang
The development of membranes with effective biofouling resistance is crucial for advancing membrane technologies in water and wastewater treatment. In this study, we successfully developed a series of nanorod-patterned polyvinylidene fluoride membranes, and systematically investigated the effects of nanorod height on their physicochemical properties and antibiofouling behaviors. The modified membranes demonstrated enhanced hydrophilicity, decent water permeability and rapidly antimicrobial ability against Escherichia coli . Notably, the membrane with the highest nanorods of 408 nm (HH) reduced bacterial viability to 48.6 ± 2.5% relative to the pristine membrane within 10 min. The rapid effect was associated with the triggered production of intracellular reactive oxygen species (ROS) upon short-term contact with the nanorod-patterned surfaces by stimulating antioxidative systems. In long-term antibiofouling tests, the HH membrane achieved a flux recovery rate of 93.1 ± 3.3%, substantially higher than that of the control membrane (i.e., 77.5 ± 4.6%), mainly attributed to rapid antibacterial activity imparted by nanorod pattern and competing membrane basic properties. Differentially expressed proteins (DEPs) analysis and morphological observations revealed that initial bacterial inhibition stemmed predominantly from ROS-mediated physiological stress rather than immediate physical disruption. Our study provided a new dimension for design and long-term application of nanopatterned membrane in water and wastewater treatment.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Qingyuan Song,Jinshou Yao,Liujun Jin,Peiyang Gu,Ye Wang,Ping Liu,Congping Chen,Guohong Dai
Dibutyl phthalate (DBP), a ubiquitous plasticizer pollutant, poses severe risks to environmental and human health, yet its high chemical stability makes valorization highly challenging. Herein, we report a one-pot, mild, and green strategy that directly upcycles DBP as an organic ligand to construct a ferroferric oxide functional Ni-based MOF framework nanocomposite (Fe3O4-Ni-MOF(DBP)) on nickel foam (NF), enabling the simultaneous detoxification of DBP and fabrication of a high-performance electrocatalyst. The in-situ integration of Fe3O4 nanoparticles with the Ni-MOF(DBP) endows the hybrid catalyst with accelerated charge-transfer kinetics, enhanced electrical conductivity, and abundant accessible active sites, leading to remarkable bifunctional activity for overall water splitting. In an alkaline electrolyte, Fe3O4-Ni-MOF(DBP)/NF exhibits outstanding bifunctional electrocatalytic performance, delivering low overpotentials of 233 mV for the OER and 42 mV for the HER at 10 mA cm -2 , along with excellent durability over continuous operation exceeding 40 h. In-situ Raman analysis reveals that the superior catalytic performance of Fe3O4-Ni-MOF(DBP)/NF is attributed to the dynamic reconstruction of surface metal sites into active (oxy)hydroxide intermediates. This work presents an innovative strategy for the valorization of toxic plastic pollutants, thus advancing the cross integration of environmental remediation and clean energy technologies.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122300
·
IF 7.5
Wenqian Zhao,Ming Geng,Jing Li,Xuan Li,Xiaobing Li,Xuehua Li,Mian Wu
Layered double hydroxide (LDH) membranes, featuring uniform interlayer nanochannels, hold substantial potential for molecular sieving in aqueous solutions. In this study, polyethyleneimine (PEI) rich in amino groups is used as bridging unit to develop a robust PEI-bridged-LDH composite membrane with enhanced molecular sieving performance. The introduction of PEI bridges adjacent nanosheets, strengthens the interlayer bonding strength, creating a continuous LDH nanosheet membrane with high selectivity. Owing to the well-designed lamellar structure ans excellent hydrophilicity, the PEI-bridged-LDH composite membrane achieves high water permeance (864.5 L m −2 h −1 bar −1 ) and superior dye/salt separation performance, with outstanding dye rejections (e.g., Congo Red: 99.1%, Methyl Blue: 99.3%, Victoria Blue B: 99.7%) and low salt rejections (e.g., Na 2 SO 4 : 5.7% and NaCl: 2.2%). Moreover, the PEI-bridged-LDH composite membranes show high mechanical strength due to the hydrogen bond interactions between PEI and LDH nanosheets, thereby exhibiting robustness against mechanical damage and under high trans-membrane pressure of 5 bar. Besides, the composite membrane also demonstrates outstanding anti-fouling properties and long-term operation durability for dye/salt mixtures, suggesting its great potential in treating practical textile wastewater. This work opens a new avenue for developing robust LDH membranes for continuous and stable dye/salt separation.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Li Wang,Liwei Wang,Yuhang Que,Ling Xin,Fugang Xu
Donut-like Cu-Zn-MOF@CuNPs were synthesized via facile two-step approaches. • Cl − amplifies Cu signal via formation of highly electroactive CuCl. • Ag + inhibits the signal by competitive binding with Cl − to form AgCl. • The sensor detects Ag + with a low LOD of 1.4 nM and wide linear range. • It shows good selectivity, stability, and real water sample recovery. Silver ions (Ag + ) are highly toxic heavy metal pollutants. Conventional electrochemical methods for Ag + detection typically involve complex ionophore preparation, long preconcentration/stripping steps, or costly biorecognition agent. Here, we report a Cu-Zn-MOF supported CuNPs composite (Cu-Zn-MOF/CuNPs) for Ag + detection. The composite is prepared via a two-step room temperature mixing process. The nest-like Cu-Zn-MOF, composed of stacked two-dimensional nanosheets, provides a high specific surface area and accessible active sites for CuNPs deposition, which improves conductivity and generates a detectable redox signal. The presence of Cl − enhances the Cu redox signal due to the formation of electroactive CuCl. In the presence of Ag + , this signal enhancement is suppressed due to the competitive binding that forms AgCl precipitates. Leveraging this “amplification-inhibition” response, the Cu-Zn-MOF/CuNPs modified electrode allows for Ag + detection with two linear ranges (5 nM–100 nM and 100 nM–1100 nM), a detection limit of 1.4 nM, and recoveries ranging from 96.5% to 104.5% in spiked real water samples. The preparation procedure and detection protocol are relatively straightforward, and the sensing mechanism offers an alternative pathway for heavy metal ion detection. A donut-like Cu-Zn-MOF/CuNPs composite enables sensitive and selective electrochemical detection of Ag + via a novel amplification-inhibition mechanism: Cl − enhances the Cu redox signal through CuCl formation, while Ag + competitively binds Cl − to suppress the signal. The sensor achieves a low detection limit of 1.4 nM and good performance in real water samples. Download: Download high-res image (121KB) Download: Download full-size image
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 28
·14910-14919
·
IF 3.9
Yang Qiqi,Hu Minglv,Zhang Wenkang,Zhou Ke,Liang Zheng,Gu Qilin,Zhong Zhaoxiang,Xing Weihong
Janus
ceramic membranes with asymmetric wettability have
proven
highly effective for preparing water-in-diesel (W/D) emulsions. Therefore,
the fabrication of such tubular membranes for continuous emulsification
processes is of significant interest. In this study, tetraethyl orthosilicate
(TEOS) and methyltriethoxysilane (MTES) were used as precursors, with
ammonia serving as the catalyst, to achieve the controlled synthesis
of hydrophobic silica (SiO 2 ) particles. Subsequently, these
hydrophobic SiO 2 particles were coated onto the inner walls
of tubular silicon carbide (SiC) membranes (mean pore size = 1.2 μm)
via a simple dip-coating process. Results indicate that controlling
the ammonia concentration allows for the synthesis of SiO 2 particles with sizes that appropriately match the pore dimensions
of the tubular SiC membranes. As the SiO 2 solid content
was increased from 0.10 to 2.00 wt %, the average pore size of the
tubular SiC membranes decreased from 1.2 to 0.52 μm. Concurrently,
the apparent water contact angle on the inner walls increased significantly
from 15 ° to 142 ° , while the outer surface remained hydrophilic.
Among the membranes with various surface wettability, the configuration
featuring a hydrophobic inner wall and a hydrophilic outer surface
proved most effective for emulsion production, yielding W/D emulsions
with smaller average droplet diameter and uniform size distribution.
This work introduces an effective method for simultaneously tuning
the surface wettability and pore structure of tubular SiC ceramic
membranes, thereby establishing a foundation for the continuous membrane
emulsification of diesel fuel.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124519
·
IF 7.5
Lin Zhou,Wei Zhang,Xiangyu Xi,Jiao Zhang,Mengyu Zhou,Gaofeng Wang,Jianxi Zhu,Faqin Dong
Uranium-contaminated sites are frequently characterized by high-intensity radiation, which poses a substantial challenge to traditional bioremediation technologies. While microbial interactions with uranium are extensively studied, their efficiency and mechanisms under radiation remain poorly understood. Here, we present a radiation-tolerant microbe, Kocuria rosea , and its removal mechanism for U(VI) in an irradiated system. We reveal remarkable tolerance of Kocuria rosea to radiation and uranium, showing 40.9% of cells survive after 6000 Gy irradiation (25 Gy/min) in 50 mg/L uranium stress. We demonstrate a radiation-dependent shift in the removal mechanism of U(VI)—from biosorption and biomineralization forming H 2 (UO 2 ) 2 (PO 4 ) 2 ⋅8 H 2 O and CaU(PO 4 ) 2 in non-irradiated systems to enhanced reduction and inhibited biomineralization under irradiation—responsible for 42% and 7.23% improvement in U(VI) immobilization and reduction capacities, reaching 238.12 mg/g removal capacity. This work advances our understanding of the removal mechanism of microorganisms for uranium under irradiation, offering a new, efficient microbial remediation strategy for radionuclides.
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ENERGY & FUELS
·
2026
·Vol. 40
·期 29
·15979-15989
·
IF 6
Ji Yun,Li Zhishan,Cheng Yi-Bing,Jiang San Ping
Carbon
deposition is a significant issue for hydrogen
(H 2 ) production from alcohol-based hydrogen carriers such
as methanol
(CH 3 OH) and ethanol (C 2 H 5 OH). In
this work, we propose an ammonia (NH 3 )-assisted decomposition
strategy for short-chain alcohols and investigate the catalytic performance
of a gadolinium-doped ceria-supported Ni–Fe catalyst (denoted
as Ni–Fe/GDC) for CH 3 OH or C 2 H 5 OH decomposition with NH 3 assistance. The results show
that the presence of NH 3 effectively suppresses the carbon
deposition typically associated with alcohol decomposition and increases
the H 2 production rate by 131% in CH 3 OH/NH 3 and 185% in C 2 H 5 OH/NH 3 feed
gases as compared to the individual CH 3 OH and C 2 H 5 OH decompositions at 800 ° C, respectively. There
exists a synergistic effect between the alcohol decomposition and
NH 3 decomposition reactions. This work demonstrates the
promising potential of H 2 production via the ammonia-assisted
decomposition of short-chain alcohols and provides a valuable reference
for other coking-prone scenarios.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 30
·21320-21331
·
IF 12.2
Ma Likun,Sun Peng-Fei,Deng Yuling,Zhu Zhiyang,Liang Huaxing,Yang Yi,Lu Xinglin
Achieving stringent boron compliance in seawater desalination
has
long depended on energy-intensive multipass reverse osmosis (RO) with
alkaline dosing, creating a trade-off between energy consumption and
water quality. This work breaks this bottleneck by developing a hybrid
single-pass multistage (HSPM) system with selectivity-optimized loose
RO membranes. Tailoring commercial RO membranes into high-flux variants
via a 5 h controlled chlorination achieves an optimal balance, whereas
an extended 20-h modification causes an impractical 24.1-fold increase
in boron passage. Mechanistic analysis reveals that the 4-fold increase
in apparent activation energy ( E a ) for
B(OH) 4 – transport at pH 11 fails to fully
offset the intrinsic loss of steric selectivity under neutral conditions.
To overcome this material-level limitation, a multidimensional performance
map identifies the operational sweet spot of the HSPM system, enabling
membranes with moderate boron rejection and high water permeance to
meet the 1.0 mg L –1 threshold via multistage blending
and energy recovery. Coupling the 5 h chlorinated membrane with an
optimized 3-stage configuration theoretically yields a ∼42.5%
energy saving versus conventional two-pass RO. This research establishes
a novel paradigm for application-specific membrane selection and process
synergy, offering a scalable, low-carbon blueprint for desalination
and water reuse.
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