Materials
·
2026
·Vol. 19
·期 17
·3673
·
IF 3.7
Caimei Ma,Jiangbing Li,Xinlu Fan,Qingyang Yu
Aiming at the problem that the selectivity of heterogeneous catalysts is difficult to be controlled and the active components are easy to be lost in the acetylene double carbonylation reaction, this paper constructs a highly efficient Pd-based catalyst through the combination of carrier morphology engineering and surface basicity regulation. Using melamine/urea as a precursor, tubular carbon nitride (TCN) was constructed by hydrothermal calcination, and then Pd/TCN-series catalysts were prepared by ultrasonic-assisted impregnation loading 5 wt% Pd and heat treatment in a N2atmosphere. At the same time, bulk g-C3N4(BCN) and activated carbon (AC), TiO2, and ZSM-5 supported systems were used as controls. The characterization results show that compared to BCN, TCN-500 (calcined at 500 °C) has a higher specific surface area (40.19 m2/g vs. 12.47 m2/g) and pore volume (0.1850 cm3/g vs. 0.0792 cm3/g), which provides abundant anchoring sites and efficient mass-transfer channels for Pd nanoparticles. After the introduction of Pd, the total base amount of the catalyst increased significantly from 0.4866 to 1.7172 mmol/g, and the strong Lewis-base center was significantly enhanced. TEM/XRD confirmed that Pd was uniformly dispersed on TCN-500 and mainly exposed the (111) crystal plane. XPS further revealed that there was a stronger electron-coupling effect between Pd and the support. Under the reaction conditions of 70 °C and 5 h, the selectivity of Pd/TCN-500 to dimethyl butenedioate was up to 83.7% (acetylene conversion was 59.6%), which was significantly better than that of the contrast carrier system. The cycle test showed that the selectivity and conversion of the catalyst were reduced to 54.4% and 41.1%, respectively, on the third use. The performance degradation was mainly attributed to the oxidative damage of the TCN nanotube skeleton and the passivation of the surface active defect sites. In this study, the synergistic effect of tubular morphology and surface Lewis basicity effectively stabilized the Pd active center and regulated the product selectivity, which provided a new idea for the development of efficient heterogeneous catalysts for acetylene double carbonylation in non-petroleum routes.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 33
·15973-15983
·
IF 5.8
Ke Wei,Jiao Gongao,Xi Linqing,Li Guangbin,Zhang Hao,Zhu Liang,Zhang Dongzhi
Carbon disulfide (CS 2 ),
a highly toxic volatile
sulfur-containing industrial gas, poses serious risks to industrial
safety, occupational health, and the environment, creating an urgent
demand for highly sensitive and reliable detection. In this work,
hierarchical ZnO/Fe 2 O 3 nanomaterials were synthesized
via the pyrolysis of a nanosized ZIF-8 precursor for CS 2 detection. The optimized nanoheterostructures exhibited superior
CS 2 -sensing performance compared with their single-component
counterparts, benefiting from efficient interfacial charge modulation
within the n – n nanoheterojunctions
and abundant active sites provided by the hierarchical nanoarchitecture.
The optimized ZnO/Fe 2 O 3 sensor enabled highly
sensitive CS 2 detection with a theoretical LOD of 0.66
ppm. To suppress humidity-induced signal fluctuations, a CSA-optimized
CatBoost model was developed for humidity compensation and achieved
the highest prediction accuracy among the multiple metaheuristic optimization
strategies. This work provides an effective strategy for the rational
design of hierarchical nanoheterostructures with enhanced gas-sensing
performance and demonstrates an intelligent humidity compensation
approach for reliable CS 2 detection under practical operating
conditions.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Ma Jing,Li Jiali,Wang Xiejun,Yang Ziyan,Yue Yifan,Zhao Fuying,Zhang Zhaobang,Tao Ran,Zhu Jing
Conventional H 4 PMo 11 VO 40 (HPAV)
catalysts for the selective oxidation of methacrolein (MAL) to methacrylic
acid (MAA) are limited by insufficient active-site accessibility and
poor mass transport. Herein, hollow porous core–shell UF-CsPAV
catalysts were prepared using SiO 2 microspheres, PEO–PS
copolymer, and urea-formaldehyde (UF) resin as a dual-template/organic
precursor system. The optimized catalyst exhibited a specific surface
area of 438.0 m 2 · g –1 and well-developed
mesoporous channels. During calcination, NH 4 + species generated from the UF resin regulated the heteropolyacid
environment, increasing acidity, the V 4+ /V 5+ ratio, and terminal oxygen species. At 335 ° C and a space velocity
of 1020 h –1 , the catalyst prepared with 1 μm
SiO 2 microspheres and 50 wt % CsPAV achieved 88.1% MAL
conversion, 91.2% MAA selectivity, and MAA space-time yield (STY)
of 1.54 mmol·cm –3 ·h –1 over 100 h. This work demonstrates an integrated strategy for coupling
porous-architecture control with acid-redox regulation in MAL oxidation.
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Nature Communications
·
2026
·
IF 18.1
Guo Xin,Cui Chen,Li Kai-Xin,Zhuang Ze-Yong,Zhu Meng-Han,Zhao Fu-Xing,Ye Jing-Tong,Pan Qian-Hao,Wang Yu-Tao,Chen Chen,Huang Zong-Ying,Wang Mei-Hua,Qiu Xiao-Jing,Yu Bang,Zhang Li-Wen,Wang Jin-Long,He Zhen,Yu Shu-Hong
Echoing the regenerative powers of living organisms, self-healing materials can recover from damage, extending their lifespan and enhancing dependability, thus holding broad applications promise across diverse fields, including biological tissue engineering, soft robotics, flexible electronics, and automotive industries. Nonetheless, self-healing materials typically suffer from poor mechanical properties, a limitation stemming from the inherent trade-off between mechanical robustness and self-healing capability. Inspired by dental enamel, we report a composite featuring an aligned array of hydroxyapatite nanowires (HAP NWs) interwoven with dynamic borate bond networks by a bidirectional freeze-drying method, boasting favorable mechanical robustness and high self-healing capabilities. Benefiting from the distinct enamel-like microstructure coupled with the strong interactions between the polymer matrix and the HAP NWs, this composite can effectively transmit stress and dissipate energy to prevent crack propagation. Therefore, an impressive mechanical modulus of 4.43 ± 0.09 GPa, strength of 173.47 ± 6.36 MPa, and toughness of 2.18 ± 0.20 MPa m 1/2 are achieved while maintaining a self-healing efficiency of 97.7%. This approach paves the way for preparing materials that blend superior mechanical attributes with the intrinsic ability to self-repair.
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Jie Zhao,Hongyang Wang,Zhisheng Jia,Ruopu Bai,Chaofan Song,Huixuan Zhang
The addition of CuS could enhance the catalytic activity of FeOCl. • The FeOCl/CuS/PMS can completely degrade ciprofloxacin within 4 min. • The FeOCl/CuS/PMS could work efficiently at pH 3–9. • FeOCl/CuS/PMS system contained reactive species (·OH, SO 4 ·- and O 2 ·- ). FeOCl serves as an effective iron-based catalyst in peroxymonosulfate (PMS) activation for antibiotic removal. However, its catalytic efficiency is hindered by the sluggish redox cycling between Fe 3+ and Fe 2+ . To overcome this limitation, a composite catalyst of FeOCl/CuS was synthesized to enhance catalytic activity. At an optimal mass ratio of FeCl 3 ·6H 2 O to CuS of 1:2, the FeOCl/CuS system achieved complete degradation of ciprofloxacin (CIP) within 4 min. Notably, the catalyst exhibited high degradation efficiency across a broad pH range, demonstrating strong environmental adaptability. Although common co-existing anions and humic acid exerted inhibitory effects on CIP degradation to varying extents, the system remained robust under complex water matrices. Radical quenching experiments and electron paramagnetic resonance (EPR) analyses confirmed that hydroxyl radicals (·OH), sulfate radicals (SO 4 ·- ), and superoxide anions (O 2 ·- ) were the dominant reactive species responsible for pollutant degradation. The incorporation of CuS significantly accelerated the Fe 3+ /Fe 2+ redox cycle, thereby improving PMS activation efficiency. Reaction pathway analysis revealed that CIP was degraded via two primary routes, generating 16 intermediate products, the majority of which showed reduced ecotoxicity compared to the parent compound. Furthermore, the FeOCl/CuS catalyst maintained excellent stability and reusability, retaining over 93% CIP degradation efficiency after four consecutive cycles. These results collectively highlight the promising potential of the FeOCl/CuS/PMS system for practical wastewater treatment applications.
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ELECTROANALYSIS
·
2026
·Vol. 38
·期 4
·e70149
·
IF 2.6
Haixu Wang,Xiaonan Qi,Shunli Zhou,Rongsong Cao,Xi Yang,Le Li,Zhen Sun
Gallic acid (GA) is a natural polyphenol known for its significant biological activity and widespread presence in food, medicine, and various other fields. The accurate and rapid detection of GA is crucial for ensuring food quality control and conducting pharmaceutical analyses. In this study, we successfully developed a novel electrochemical sensor based on a ZIF-67/pomelo carbon (ZIF-67/PC) composite through a simple and environmentally friendly synthetic route. The results indicated that the glassy carbon electrode (GCE) modified with ZIF-67/PC exhibited remarkable electrocatalytic activity towards GA oxidation. The pore-like structure of ZIF-67/PC accelerates the diffusion of GA, the carbon matrix enhances electron transfer, and the Co-N-C sites catalyze the oxidation of GA, thereby achieving excellent detection performance. Under optimal conditions, the sensor demonstrated an extensive linear response range of 8–1000 μM for GA, accompanied by a low detection limit of 0.25 μM (S/N = 3). Furthermore, this sensor displayed excellent selectivity as well as good stability-retaining 91.27% current after 15 days and satisfactory reproducibility with a relative standard deviation below 2%. When applied to detect GA in green tea samples, recovery rates ranged from 95.2% to 102.1%, underscoring its practical application potential. This work presents a viable strategy for developing low-cost yet high-performance electrochemical sensors by integrating metal–organic frameworks with biomass-derived carbon materials.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123082
·
IF 7.5
Zhe Xu,Jiantong Zhou,Chengfeng Liu,Weilan Zhen,Taicheng An
The peroxodisulfate (PDS)-based oxidation systems are promising for Cu(II) complex decomplexation owing to its capacity to harness the self-enhanced decomplexation (SED) effect of Cu(II) complexes. This phenomenon was conventionally attributed to liquid-phase autocatalysis via Fenton-like reactions between daughter Cu(II) species and PDS. However, this frequently adopted hypothesis is inconsistent with the actual catalytic activity of Cu(II) species and has been challenged by our preliminary results. Herein, we revisit the decomplexation of copper(II)-ethylenediaminetetraacetate (Cu(II)-EDTA) in UV/PDS system, with particular emphasis on correcting the catalytic behaviors of Cu species and clarifying the indispensable role of UV-irradiation in SED effect. Both acidic and alkaline conditions exhibit significant SED effect, but we reveal a pH-dependent SED mechanism that is fundamentally different from the prevailing liquid-phase autocatalysis mechanism. Under acidic conditions, Cu(II) complexes exhibit enhanced catalytic capacity with decreasing ligand coordination strength, primarily stemming from the activation of PDS by Cu(I) species produced via the irradiation-induced intramolecular charge transfer; In alkaline environments, only liberated Cu(II) substantially contribute to SED effect via spontaneous hydrolysis, forming nanostructured CuO after aging, which activates PDS through heterogeneous Fenton-like processes. While acidic conditions demonstrate faster decomplexation, alkaline-generated solid products facilitate multi-cycle treatment efficiency and alkaline conditions also exhibits stronger resistance to chloride. This work corrects the misinterpretation of SED mechanism in UV/PDS/Cu(II)-EDTA system, and provides a fundamental and accurate mechanistic basis for the efficient treatment of copper-containing organic wastewater by PDS-based processes.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Cheng Liu,Yawen Liu,Shuyu Ouyang,Junyi Yang,Ruihan Huang,Renren Wang,Lin Zhu,Kai Du,Xin Chen,Tao Duan
A MOF-based dual-network fibrous membrane is prepared via one-step electrospinning. • The membrane exhibits excellent superhydrophobicity and self-cleaning function. • Structure–performance relationship of fiber size effect and filtration is revealed. • Excellent iodine aerosol removal efficiency is preserved under elevated humidity. The efficient remediation of radioactive iodine aerosols is crucial for nuclear pollution control. However, existing technologies struggle to simultaneously capture radioactive iodine vapors and aerosols while maintaining performance under high-humidity conditions. Herein, a facile and scalable one-step electrospinning strategy is used to fabricate a superhydrophobic dual-network MOF-based composite fibrous membrane (ZIF-8@PVP/MK). The hierarchical dual-network structure construction and tunable fiber diameters are achieved by regulating spinning voltage. An organosilicon resin rich in low-surface-energy Si–CH 3 groups is used to ensure superhydrophobicity. Through in-situ blending, ZIF-8 nanoparticles are embedded within and on the fibers, significantly increasing the purification performance for radioiodine aerosols with iodine adsorption capacity of 1981 mg/g and high filtration efficiency over 99%. Spectroscopic analysis reveals that the C O bonds in PVP and the C N bonds in ZIF-8 ligands provide electrons for iodine capture, facilitating charge transfer and strong chemisorption. Moreover, ZIF-8 loading creates abundant surface defects and enhances roughness, providing numerous active sites and pathways for aerosol capture. Notably, the superhydrophobic membrane exhibits excellent self-cleaning capability and water resistance, ensuring long-term stability and recyclability. This work presents a promising material for the efficient purification of radioactive iodine aerosols and offers a practical strategy for nuclear waste management in high-humidity environments. Download: Download high-res image (193KB) Download: Download full-size image
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INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Qianyu Shang,Pengfei Fei,Jun Wang,Hongxia Chen,Bei Wang,Jiying Shan,Keju Guo,Fu Li,Yunhui Zhang,Jingang Yao,Yang Zhang
One-step flax degumming and simultaneous bleaching were achieved by TA-PDS. • High degumming efficiency was obtained while fiber properties were preserved. • Selective lignin degradation was promoted by electrophilic •OH. • Wastewater loads, water footprint, and life-cycle burdens were reduced. In this study, a thermal-alkaline activated peroxydisulfate (TA-PDS) process with integrated degumming and bleaching functions was developed for flax fiber treatment. Under the optimized conditions of a NaOH/PDS molar ratio of 6:1, a PDS concentration of 8.8 g/L, and a reaction time of 2.7 h, the residual gum content of the treated fibers was as low as 5.8%, while the fiber retained a tenacity of 2.1 cN/dtex, a whiteness of 48.7%, and a fiber yield of 75.0%. Compared with the traditional alkaline degumming process, TA-PDS achieved more effective removal of non-cellulosic components while preserving favorable fiber properties. Mechanistic investigation demonstrated that radical oxidation and alkaline hydrolysis played synergistic roles in lignin degradation, with electrophilic •OH acting as the dominant oxidative species. The preferential attack of •OH on the electron-rich structures of lignin, together with OH⁻-promoted cleavage of β-O-4 ether linkages, contributed to selective lignin removal and preservation of fiber integrity. Environmental assessment further demonstrated that TA-PDS reduced water consumption from 45.0 to 15.0 m 3 per ton of raw flax and lowered the global warming potential from 766.2 to 285.4 kg CO₂ eq, together with reductions in wastewater pollutant load, and overall environmental burdens. These findings indicate that TA-PDS provides a feasible strategy for simultaneously achieving efficient degumming and favorable fiber properties while improving the environmental sustainability of the process. Download: Download high-res image (182KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Jie Lei,Yue Lu,Rongxin Gao,Peining Lin,Yan Xiao,Jiandong Lin,Yong Yan,Wei Yan,Jiujun Zhang
Photocatalytic hydrogen production from methanol suffers from the sluggish reaction kinetics and low photocatalytic selectivity, as well as the inaccessible on-demand hydrogen production due to the intermittent nature of solar energy. Here, we present a polyoxometalates (POMs)-mediated strategy, acting as photocatalysts and electron-coupled-proton buffers, which not only yields value-added formaldehyde products with high selectivity of almost 100%, but also enables the spatiotemporally decoupled hydrogen production. The photo-reduced POMs exhibit an ultra-low onset oxidation potential (<0 V vs. NHE), thus enabling the direct photocatalytic hydrogen production from methanol in the presence of POMs and Pt/C catalysts with the hydrogen evolution rates of 0.431 mmol h −1 mg −1 Pt and 0.407 mmol h −1 mg −1 Pt in the H 4 SiW 12 O 40 -based and H 6 ZnW 12 O 40 -based systems, respectively. Moreover, an “indirect” methanol fuel cell based on the POM-mediated system can be constructed with an open-circuit voltage of ∼0.9 V and a maximum power density of 33 mW cm −2 .
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DESALINATION
·
2026
·
IF 9.9
Ruijun Zhang,Jiaxu Ning,Yanei Xue,Huimin Yan,Zhengshuang Han,Jiayu Tian,Junyong Zhu
Fossil solvent is replaced with edible vegetable oil in interfacial polymerization. • Soya-bean oil is optimal due to its well film-forming ability and low viscosity. • Soya-bean oil-based NF membrane exhibits thick PA layer with high salt rejection. • Soya-bean oil can act as green substitute for greener TFC membrane production. Despite the prevalent use as organic phase in interfacial polymerization (IP), conventional fossil solvents such as n-hexane are toxic, volatile and flammable, raising growing concerns about their safety. Regarding this issue, hereon we employ edible vegetable oils as a green organic phase to replace fossil solvents for the preparation of thin film composite (TFC) nanofiltration (NF) membranes. Five candidates including soya-bean oil, peanut oil, corn oil, flaxseed oil and olive oil were selected for exploration. Characterization demonstrates that soya-bean oil is the optimal selection, which can be attributed to its superior film-forming ability, low viscosity and facile removability. The selectivity of the soya-bean oil-based TFC NF membrane can be further improved by regulating IP parameters. Compared to the membranes fabricated with n-hexane and Isopar G, the soya-bean oil-based NF membrane exhibits a much thicker polyamide (PA) layer with thickness around 161 nm. This structural characteristic enables excellent desalination performance, with salt rejection exceeding 98% for MgSO 4 and 99% for Na 2 SO 4 . However, the increased thickness also results in a relatively lower water permeability of about 3.5 L m −2 h −1 bar −1 . Our study demonstrates the feasibility of using soya-bean oil as a substitute for conventional fossil solvents in IP reaction. It thereby offers a promising alternative for enabling greener production processes in TFC NF membrane manufacturing. Download: Download high-res image (180KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Wenhui Jiang,Xingyu Ji,Xiaoping Zeng,Hui Chen,Dawei Wang,Jiangping Xu,Qianqian Liu,Hongyang Zhao,Jiangyu Wu
Superhydrophobic sponge materials offer a promising solution for treating oily wastewater. To address the challenges of hydrophobic modifier leaching and process complexity, this study developed a composite sponge by immobilizing hydrophobically modified mesoporous silica nanoparticles (H-DMNH) onto a polydopamine (PDA)-modified melamine sponge (MS) framework. Hydrophobic long-chain siloxanes were grafted onto the mesoporous silica nanoparticles (DMNH) via hydrothermal synthesis, and the resulting H-DMNH was firmly anchored onto the PDA coated MS sponge through electrostatic interactions, hydrogen bonding, and hydrophobic interactions. The obtained H-DMNH/PDA@MS sponge exhibits integrated and durable superhydrophobicity with a water contact angle (WCA) of 154°, antifouling properties, high oil absorption capacity (36.2–118 g/g), efficient separation of oil/water mixtures and emulsions (>97%), and good recyclability. Under simulated solar irradiation, the H-DMNH/PDA@MS sponge surface temperature rapidly rises to 65 °C within 1 min, achieving a photothermal conversion ability of 88.3%, thereby promoting adsorption through reducing oil viscosity. Furthermore, the H-DMNH/PDA@MS sponge shows certain flame-retardant characteristics (loss rate is 25.6%), which substantially enhance operational safety in flammable environments. With this multifunctional attribute, the H-DMNH/PDA@MS sponge emerges as a robust and sustainable material for practical oil-water separation applications.
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