COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yun-Xi Jiang,Shu-Fei Yin,You-Lin Zhang,Pan Liu,Hao Li,Lian-Kui Wu,Fa-He Cao
Conventional epoxy coatings rely primarily on passive barrier effects and therefore lack the ability to regulate interfacial corrosion processes after local damage. Here, a physicochemically regulated active/passive epoxy coating is developed by incorporating a phytic acid–loaded cerium-based metal–organic framework (CeMOF-P) as a functional colloidal additive. Owing to the confinement and coordination effects of the CeMOF framework, phytic acid is stably immobilized and uniformly dispersed, resulting in improved coating compactness and interfacial adhesion. Electrochemical impedance spectroscopy shows that the CeMOF-P–modified coating exhibits markedly enhanced corrosion resistance and, more importantly, a characteristic non-monotonic impedance evolution with pronounced impedance recovery upon damage, indicating an interfacial regulation mechanism beyond passive shielding. Mechanistic analyses reveal that corrosion-triggered, coordinated release of Ce 3+ /Ce 4+ species and phytic acid leads to the in situ formation of a compact cerium–phosphate–rich interfacial film, which simultaneously suppresses anodic dissolution and cathodic reactions. These results demonstrate that Ce–P synergy enables continuous interfacial regulation rather than transient passivation, providing mechanistic insight into the role of coordination chemistry and colloidal confinement in governing interfacial electrochemical behavior and stability in protective coating systems.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2026
·
IF 9.2
Wei Liu,Zhengtong You,Shiqi Qin,Zhipeng Hu,Jiaxin Mu,Zhijun Zhang,Yanjun Xie,Qingwen Wang,Charles U. Pittman
Developing sustainable carbon materials with both dye adsorption and electrochemical properties offers a promising strategy for carbon neutrality. Herein, a coupled carbonization strategy was employed to prepare porous carbon with high-level heteroatom doping and hierarchical pores, involving the co-hydrothermal treatment of wood flour with phytic acid and melamine, followed by K 2 CO 3 activation. Phytic acid and melamine act as P/N sources and structural builders, promoting hydrochar formation via phosphate coordination and condensation reactions, resulting in a stable cross-linked network rich in N, P, and O. The resulting N, P co-doped hierarchical porous carbon (NP-PC) exhibits an ultrahigh surface area (2792 m 2 g −1 , a 344 % increase compared to pure wood flour-derived carbon), suitable mesoporosity (36 %), and tailored surface chemistry (19.86 at% heteroatom content). At room temperature, NP-PC demonstrates an exceptionally high adsorption capacity for methylene blue (3028 mg g −1 after 6 h contact) and rapid adsorption kinetics (90 % removal within 5 min), outperforming most reported carbon-based adsorbents. NP-PC retains an adsorption capacity above 2500 mg g −1 even after five regeneration cycles. As a supercapacitor working electrode, NP-PC electrode also shows excellent electrochemical performance, delivering a specific capacitance of 380 F g −1 at 0.5 A g −1 and retaining 273 F g −1 at 25 A g −1 . This study achieves the conversion of low-value biomass into high-performance functional carbons, providing a sustainable solution for integrated environmental and energy applications.
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Case Studies in Thermal Engineering
·
2026
·
IF 6.4
Lin Zhou,Zhe Wang,Qi Zhao,Wenwei Wang,Xianfeng Chen
Wheat dust poses a significant hazard to grain processing safety due to its high explosion sensitivity. To develop an inhibitor combining high-efficiency explosion suppression with environmentally friendly and edible properties, this study innovatively employed an aqueous phase condensation-freeze-drying method to successfully synthesize a phytic acid-adenine complex (PA-A) using naturally edible phytic acid (PA) and adenine as raw materials. Characterization analyses employing laser particle size analyzer, field-emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FE-SEM/EDS) confirmed the formation of a lamellar microstructure with highly dispersed phosphorus elements. The suppression effect of PA-A on a 300 g/m 3 wheat dust explosion was systematically investigated evaluated in a vertical tube combustion apparatus (1000 × 80 × 80 mm). Results demonstrated that increasing inhibitor concentration (0 vol%-12.5 vol%) progressively suppressed flame propagation, evidenced by color transition from bright yellow to dark red, morphological fragmentation, and discontinuity. Quantitative analysis revealed peak flame propagation velocity decreased from 27.6 m/s to 10.9 m/s (a reduction of 60.5 %), maximum temperature declined from 993 °C to 367 °C (a reduction of 63.1 %), and the maximum explosion pressure attenuated from 48.3 kPa to 20.1 kPa (a reduction of 59 %), with a significant delay (>80 %) in the time to reach these peak parameters. Comprehensive analysis based on Thermogravimetry-Differential Scanning Calorimetry (TG-DSC), X-ray Photoelectron Spectroscopy (XPS), and Fourier Transform Infrared Spectroscopy (FTIR) elucidated a multi-level synergistic suppression mechanism involving endothermic cooling, gas-phase dilution, surface isolation, and free radical quenching. This study provides a safe, environmentally friendly, and edible new strategy for controlling grain dust explosions.
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CARBON
·
2026
·
IF 11.6
Chunlei Chi,Guanwen Wang,Xinhou Yang,Bin Qi,Zhiyuan Li,Baoyi Mu,Zheng Liu,Tong Wei,Guojun Xu,Zhuangjun Fan
Hard carbon (HC) possesses large interlayer spacing, abundant defects, and porous structures, enabling efficient storage of large-radius K + ions. Nevertheless, its highly disordered nature renders the microstructure challenging to precisely regulate, which disrupts electronic conductivity and introduces irreversible active sites. Herein, conjugated poly(bithiophene) and phytic acid were employed as ligands to construct a lamellar precursor with reinforced interlayer support through Fe 3+ coordination and crosslinking. Upon optimized pyrolysis, the derived HC exhibits a high reversible capacity of 407 mAh g −1 , long-term cycling stability (1800 cycles at 1 A g −1 ), and excellent rate capability (200 mAh g −1 at 1 A g −1 ) in potassium-ion batteries. Thermogravimetry-mass spectrometry (TG-MS) analysis was conducted to investigate the structural evolution mechanisms of the precursor during pyrolysis. Furthermore, ex-situ characterization combined with density functional theory (DFT) calculations elucidated the intrinsic origin of the superior reversibility and activity associated with S–C and P–C doped configuration. These findings offer new insights into precursor engineering and controlled heteroatom doping for the development of high-performance HC anodes, providing both fundamental understanding and practical guidance for next-generation energy storage and conversion.
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GREEN CHEMISTRY
·
2026
·
IF 9.2
Yi Xu,Fanshu Yuan,Xiaotian Xie,Jinhui Tong,Cheng Min,Qian Zhang,Jie Tang,Jie Liu,Tingting Lv,Qianli Zhang
Activating lattice oxygen in oxygen evolution reactions (OER) serves as an effective strategy to overcome the inherent limitations of the traditional adsorbate evolution mechanism (AEM). Molybdenum dioxide (MoO2), which has attracted attention due to its high electrical conductivity and other metallic properties, exhibits excessive adsorption of oxygen-containing intermediates at its elevated molybdenum d-band center. This leads to the formation of stable Mo–O bonds, thereby hindering the lattice oxygen mechanism (LOM). This study demonstrates that phosphorus doping serves as a more direct strategy for intrinsic electronic structure modulation. DFT calculations predict that phosphorus doping effectively lowers the d-band center of molybdenum and softens Mo–O bonds, thereby enabling lattice oxygen participation in the reaction mechanism. Consistent with the computational results, experimental kinetic studies (e.g., pH-dependent experiments) and chemical probe tests confirm that P-MoO2 follows the LOM pathway. The prepared P-MoO2 catalyst exhibits an overpotential of only 247 mV at 10 mA cm−2 current density while maintaining stability for up to 100 hours. Furthermore, through various characterization techniques (TEM, XPS, in situ Raman spectroscopy), it was observed that the catalyst underwent significant potential-induced surface reconstruction during the reaction process, forming an amorphous MoO(OH)x layer rich in Mo5+. This reconstructed layer is considered the true active phase, where Mo5+ has been confirmed as the dominant valence state in the OER process.
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ACS Applied Polymer Materials
·
2026
·
IF 4.7
Kaili Gong,Lian Yin,Xiaodong Qian,Zilong Wu,Huafei Liu,Jie Zhang,Keqing Zhou,William W. Yu
The rapid advancement of portable electronics and wireless communication technologies has intensified electromagnetic pollution, creating a pressing need for lightweight, flexible, and safe electromagnetic interference (EMI) shielding materials. In this study, we developed a mechanically robust and flexible composite film by integrating MXene into an aramid nanofiber (ANF) matrix with dual-doped polyaniline (DPANI)-encapsulated MXene nanohybrids (MXene–DPANI, codoped with phytic acid and copper ions). The resulting ANF/MXene/MXene–DPANI (AMP) films exhibited high tensile strength, accompanied by superior fire resistance. Systematic evaluation revealed the superior EMI shielding performance of AMP films in the X-band range (8.2–12.4 GHz). Remarkably, a 30 μm-thick film with a 1:1 filler ratio of MXene to MXene–DPANI achieved an impressive EMI shielding effectiveness (SE) of 31 dB, surpassing commercial benchmarks. Further increasing the film thickness to 70 μm enhanced the EMI SE to 35 dB. Furthermore, optimizing the filler ratio to 3:1 (MXene:MXene–DPANI) significantly improved the EMI SE to 40 dB (30 μm thickness). The AMP films also displayed a controllable Joule heating performance, attaining a stable temperature of over 76 °C at 6 V with outstanding cycling stability. These findings underscore the potential of MXene-based nanofiller-decorated ANF composite films as high-performance EMI shielding materials for multifunctional applications.
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POLYMER BULLETIN
·
2026
·Vol. 83
·期 5
·215
·
IF 4
Wang Song,Ma Rumeng
Coating polyethylene terephthalate (PET) fabrics by flame-retardant polyacrylate (PAc) is considered as a convenient and efficient method for improving the flame retardancy of PET fabrics. In this study, melamine (MEL) was reacted with phytic acid (PA), leading to the successful synthesis of a PA-based flame retardant, MP. Subsequently, aluminum diethylphosphinate (ADP) and MP were compounded at a mass ratio of 18:2 and incorporated into the PAc coating to prepare a flame-retardant PAc coating. When this flame-retardant PAc coating was coated to the surface of PET fabric, PET-ADP-MP 18:2 was obtained. The PET-ADP-MP 18:2 fabric exhibited excellent flame-retardant performance, achieved fire rating B 1 in the Vertical flammability test (VFT), with a limiting oxygen index (LOI) of 26.3%. Compared to the untreated PET fabric, the peak heat release rate (PHRR) was reduced by 70.81%. Moreover, the mechanical properties of PET-ADP-MP 18:2 were also improved. The tensile strength in the warp direction increased by 41.7%, while that in the weft direction increased by 57.7%. The flame retardant obtained by the combination of ADP and MP is therefore considered to hold significant potential for application in the field of flame-retardant PET fabrics (FR-PETs).
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Wen Yu,Weizhou Chai,Zhenhua Chen,Haitao Li,Yu Qiao,Hangcheng Yang,Guiyin Xu,Hengda Sun,Yu Chen,Hongkang Wang
Na 3 (VO) 2 (PO 4 ) 2 F (NVOPF) has been recognized as a promising cathode of sodium-ion batteries (SIBs) owing to its high working potential and high energy density, but its practical application is hindered by the poor electronic conductivity and difficulty in structure regulation. Herein, we adopt the phytic acid (PA) as a new phosphorus source to chelate VO 2+ and Na + /F − ions under hydrothermal condition, leading to the successful fabrication of cuboid-like NVOPF with average length of 1.96 μm, while introduction of citric acid (CA) results in the formation of truncated cube-like NVOPF with uniform and smaller average length of 0.81 μm, which exhibits enhanced reaction kinetics and superior sodium storage performance. To overcome the poor conductivity of NVOPF, reduced graphene oxide (rGO) nanosheets are introduced during hydrothermal synthesis, leading to the formation of rGO-wrapped NVOPF microcubes (NVOPF/rGO) with tunable rGO contents. The optimized NVOPF/rGO demonstrates significantly improved electronic conductivity and excellent sodium storage performance, displaying a theoretically high reversible capacity of 130.3 mAh g −1 at 0.2C and outstanding cycling stability with a capacity retention of 100.0 mAh g −1 after 3500 cycles at 10C (corresponding a decay rate of 0.0043% per cycle). Operando synchrotron analysis reveals that Na 3 (VO) 2 (PO 4 ) 2 F undergoes complete solid solution reaction with V 4+ /V 5+ redox couples upon sodiation/desodiation, and the Na 3 (VO) 2 (PO 4 ) 2 F displays highly reversible lattice parameters with a small overall volume change of 2.28%, which almost completely recovers with a negligibly variation of 0.038%, indicating the robust structure stability of NVOPF. Moreover, the full cell with NVOPF/rGO cathode and hard carbon anode also demonstrates superior cycling stability for practical application.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Qian Chen,Xiaoke Li,Size Zheng,Lie Zou,Wei Xie,Xinrong Huang,Hongbing Wang,Mingming Zheng,Yingtang Zhou
Solar-driven brine desalination faces two critical challenges: the high energy barrier of water vaporization and severe salt accumulation. To address these, we designed a lotus-seed-pod inspired hydrogel evaporator with a hierarchical structure and heterogeneous interface. By precisely patterning hydrophobic domains on a hydrophilic network on heterogeneous interface, the interface actively reconfigures hydrogen-bonding, enriching weakly bonded intermediate water and reducing the vaporization enthalpy by 26.6%. This thermodynamic advantage, coupled with synergistic thermal and solutal Marangoni convection, yields robust, self-regulating salt resistance. Consequently, the evaporator achieves a high evaporation rate of 2.82 kg·m −2 ·h −1 at 92.2% efficiency in 20 wt% brine, maintaining zero salt crystallization over 240 h of continuous operation. Numerical simulations further confirm that precise regulation of the spatial distribution, strength, and connectivity of hydrogen bonds simultaneously optimizes water transportation. This work reveals that bio-inspired interfacial design with patterned wettability and confinement domains lowers the phase-change energy barrier, enabling efficient, salt-resistant solar evaporation for sustainable water technologies.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yang Liu,Jiyuan Han,Ke Shang,Zhen Huang,Sheng Zhang,Junsheng Wang
Nowadays, endowing water-based intumescent fireproof coatings with balanced thermal insulation and char layer strength is highly desirable in the field of steel structures fire prevention. Herein, a novel water-based intumescent fireproof coating with desired thermal insulation, fire resistance, and char layer strength was developed based on the traditional “APP-PER-MEL” intumescent flame-retardant system and epoxy resin latex, in which the organic-modified titanium dioxide containing B/Si ceramic precursors (MTi) and expandable graphite bearing γ-aminopropyltriethoxysilane (MEG) were added into the above system as functional fillers. Specifically, MTi served as an inorganic reinforcing component to strengthen the intumescent barrier layer, while MEG worked as an expanding component to compensate for the inhibition of the expansion ratio by MTi. Benefiting from the good synergistic flame-retardant effect between MTi/MEG and “APP-PER-MEL” intumescent flame-retardant system, the target fireproof coating obtained excellent fire resistance and heat insulation performance as well as char layer strength. As expected, the target fireproof coating exhibited remarkable thermal reliability and char residue (51.2 wt%), its backside temperature was lowered to 257.9 °C after 20 min of heat insulation test. Importantly, the intumescent char layer of the target fireproof coating could withstand a 100 g weight without collapsing or breaking, its compressive strength reached 10.25 kPa, which was 1267% higher than that of the blank sample. Moreover, the PHRR, THR, and PSPR values of the target fireproof coating declined by 23.8%, 16.7%, and 35.7%, respectively, compared to the blank coating. This work put forward a viable strategy for the fabrication of intumescent fireproof coatings with ideal thermal insulation performance and char layer strength, which can effectively improve the fire safety of steel structural components.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Tian Yuan,Shiyu Lv,Xueyan Zhang,Weilin Fu,Pu Yang,Kerong Fu,Qiuxian Zhang,Xia Yao,Yanli Luo,Feng Wang
Phosphate ore reserves are insufficient for sustained human use, and the resource recovery of condensed phosphates in water bodies remains challenging. Herein, nanomagnesia (AA-MgO) with coexisting magnesium and oxygen vacancies was synthesized via the sacrificial template method using metal–organic frameworks. AA-MgO achieved efficient condensed-phosphate catalysis and simultaneous orthophosphate recovery in an electrocatalytic coupling adsorption system. Its unique dual-vacancy structure considerably enhanced its electrocatalytic performance. Under optimal conditions, AA-MgO showed adenosine triphosphate (ATP) and pyrophosphate (P ∼ P) removal rates of 98.75% and 98.20%, respectively, exhibiting 2.06–13.23 times better pseudo-first-order kinetics than commercially available MgO. After being regenerated thrice, AA-MgO maintained a > 70% removal rate, demonstrating excellent structural stability. Quenching and radical-trapping experiments confirmed that the catalytic process involved radical and nonradical pathways, with ·OH playing a dominant role in catalyzing ATP, while the nonradical pathway involving 1 O₂ contributed more significantly to P ∼ P degradation. Density functional theory calculations showed that the ATP adsorption energy was higher on the V Mg + V o surface than on the V o surface. Moreover, the energy barrier of the rate-determining step in P ∼ P degradation was lower on the former, indicating that this surface favored condensed-phosphate degradation. Finally, differential charge and electrochemical characterization revealed that AA-MgO exhibited superior electron transfer rates than MgO.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 33
·16075-16088
·
IF 5.8
Xia Junkun,He Zhongyi,Lei Juanhong,Long Qiyang,Xiong Liping,Li Lili,Liu Feng,Ouyang Laizhao,Zeng Xiangqiong
Carbon dots are attractive lubricant nanoadditives because
their
nanoscale size and tunable surface chemistry allow them to interact
with confined friction interfaces. However, achieving effective antiwear
protection under high contact loads requires surface structures that
can couple physical filling with interfacial film formation. Here,
N, S, and P-modified carbon dots (NSP-CDs) were prepared from glucose-derived
carbon using taurine and phytic acid as heteroatom sources. The resulting
NSP-CDs had an average size of about 2.5 nm and exhibited abundant
oxygen-, nitrogen-, sulfur-, and phosphorus-containing functional
groups. When used as nanoadditives, 0.3 wt % NSP-CDs markedly improved
the antiwear performance of steel-to-steel contacts. At 392 N and
1400 rpm, the average wear scar diameter decreased by 47.5% compared
with the base oil, while the wear volume and apparent wear rate both
decreased by about 92.4%. Wear scar morphology, elemental mapping,
and X-ray photoelectron spectroscopy showed that NSP-CDs formed a
composite protective film containing a carbonaceous adsorption layer,
iron oxides/hydroxides, P–O/Fe–O–P-related phosphates,
and oxidized sulfur species. The antiwear effect is attributed to
the combined action of nanoparticle filling, rolling-polishing, and
N, S, and P-assisted interfacial film formation. These results suggest
that multielement surface modification is an effective strategy for
designing carbon dot nanoadditives for high-load antiwear lubrication.
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危险品化学品经营许可证（带存储）