ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 35
·47618-47628
·
IF 7.8
Zhang Zhao,Li Renjie,Ding Zhao,Wang Sa,Du Aoxuan,Wang Dan,Xie Wei
The development of efficient and reversible ammonia (NH 3 ) adsorbents is crucial for advancing ammonia fuel cell technology. Key challenges in the ammonia adsorption–desorption process include achieving high uptake/release efficiency, favorable kinetics, and stable cycling lifetime. Herein, we report a strategy to prepare high-performance ammonia adsorbents by partially etching metal–organic frameworks (MOFs) with tannic acid (TA). Partial etching by protonated TA not only exposes metal active sites but also chelates metal ions, significantly enhancing both the adsorption capacity and the stability during adsorption–desorption cycles. This strategy retains the high specific surface area of the micropores and the chelating functional groups while alleviating premature pore blockage caused by capillary condensation of ammonia on the material surface, thereby improving adsorption kinetics. The partially etched ZIF-67 achieves a reversible capacity as high as 58 mmol g –1 at 298 K and 7 bar, theoretically corresponding to a hydrogen content of 7.5%. The generated hierarchical pore network facilitates ammonia desorption, reducing the temperature and energy required for regeneration, with complete desorption achieved at 364 K. Moreover, the partially etched MOF exhibits excellent ammonia adsorption selectivity, offering a new approach for the purification of industrial exhaust gases. In situ infrared spectroscopy and theoretical calculations reveal that the enhanced adsorption arises from weak chemisorption, benefiting from an increased density of adsorption sites within the engineered pore environment. This strategy provides a new avenue for designing integrated, efficient, and safe systems for ammonia fuel storage and release.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Yajing Liu,Yijia Huangliang,Ruiyan Wang,Yu Shen,Changyin Zhu,Rongting Ji,Jianming Xue,Hu Cheng
The coactivation of biomass using different metal salts remains underexplored despite its potential to engineer hierarchical porosity in biochar. Herein, we report a sustainable and innovative strategy for converting bamboo waste into meso/microporous biochar (MMB) through simultaneous activation with K 2 CO 3 and CaCO 3 . The resulting MMB features a high specific surface area of 1811.31 m 2 /g and a total pore volume of 1.01 cm 3 /g. When evaluated for diethyl phthalate removal, MMB achieves a maximum sorption capacity of 930.56 mg/g according to the Sips model, considerably exceeding those of conventional biochars and commercial activated carbons. More importantly, MMB also demonstrates high performance toward sulfamethoxazole, a representative antibiotic, with a maximum sorption of 676.27 mg/g according to the Sips model. Mechanistic analyses reveal that pore filling, hydrophobic partitioning, hydrogen bonding, and π–π stacking collectively govern the sorption of organic pollutants. Furthermore, MMB exhibits excellent reusability over five cycles, growth-stimulating properties, and robust performance in real water matrices (tap water, lake water, and domestic sewage). The preliminary material-and-energy cost of MMB is estimated to be 9.52 $/kg, which is lower than that of activated carbon prepared via KOH activation. This coactivation paradigm offers a facile, cost-effective, and scalable route for upgrading biowaste into high-performance sorbents, addressing the simultaneous challenges of emerging pollutant remediation and waste valorization. Download: Download high-res image (175KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Weiyi Xu,Yutong Meng,Fan Yu,Huanfeng Ye,Xuejiao Xu,Jie Chen,Xianrui Liang,Sheng Fang
This study evaluated Osmanthus fragrans fruit (OFF) peel as a potential source of anthocyanin-based natural colorants. Anthocyanins were extracted using acidified ethanol and purified by macroporous resin adsorption, yielding a pigment-rich extract with a recovery of 10.4 ± 0.2% from dried peel. HPLC–MS/MS analysis indicated that cyanidin-3-O-rutinoside (C3R) was the predominant anthocyanin in the extract. The molar absorptivity of C3R was experimentally determined to enable more accurate quantification of C3R-rich systems. The purified extract exhibited typical pH-dependent color behavior, maintaining a stable red coloration under acidic conditions (pH 2.0–4.0). Thermal stability experiments showed that C3R degradation was strongly influenced by temperature and pH, and the degradation behavior followed first-order kinetics. In addition, the extract displayed measurable antioxidant capacity in DPPH and FRAP assays. These results demonstrate that O. fragrans fruit peel is a promising source of C3R-rich anthocyanins with potential applications as natural colorants in acidic food systems.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shuo Gao,Wanru Feng,Junsu Jin,Jianguo Mi,Hong Meng
Structured adsorbents capable of combining strong low-pressure CO 2 affinity, high selectivity, and humidity tolerance are highly desired for low-concentration CO 2 capture, yet remain difficult to realize because shaping often compromises porosity and mass transport. Here, we report a solvent-directed and nanoconfined crystallization strategy to construct millimeter-sized polyacrylate (PA)-supported Zn 2 (Mtz) 2 Ox-EG sphere (Zn 2 (Mtz) 2 Ox-EG@PA). Ethylene glycol modulates the ultramicroporous environment of Zn 2 (Mtz) 2 Ox, enhancing its low-pressure CO 2 affinity, while the confined macroporous network of the PA matrix promotes heterogeneous nucleation and suppresses free crystal growth, sharply reducing the size of the micrometer-scale MOF bulk crystals by nearly 100-fold. The resulting Zn 2 (Mtz) 2 Ox-EG@PA composite exhibits a high CO 2 uptake for 1.68 mmol g −1 at 0.05 bar and 313 K, while N 2 and CH 4 adsorption are strongly suppressed. Consequently, high IAST selectivities of 3447 for CO 2 /N 2 and 1275 for CO 2 /CH 4 are achieved at a 5/95 gas ratio. The hydrophobic MOF framework and PA matrix endow the composite with excellent hydrothermal durability, retaining framework integrity after hot-water treatment at 403 K for 7 days. Dynamic breakthrough experiments further demonstrate efficient CO 2 /N 2 separation from a 5 vol% CO 2 stream at 90% RH, highlighting the potential of nanoconfined MOF crystallization for robust structured adsorbents under humid dilute-CO 2 conditions.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Wei Zhang,Jinhui Wang,Jialu Xu,Yulong Xu,Haiyan Li,Yujun Jiang
The environmental persistence and inherent biodegradation resistance of pesticide residues pose a serious threat to ecosystems and human health, necessitating the development of efficient monitoring strategies. Herein, we decipher the fluorine-fluorine (F···F) interaction within an AIE-active, trifluoromethyl-functionalized covalent organic framework (PEFA-COF) and exploit this molecular recognition motif for the selective detection of trifluralin (TFR). Benefiting from abundant trifluoromethyl moieties and superior luminescence properties, the PEFA-COF enables specific TFR recognition through a synergistic interplay of electrostatic forces, hydrogen bonding, and F···F interactions. This recognition event triggers a pronounced fluorescence quenching response via the internal filtration effect (IFE), facilitating highly sensitive and selective TFR quantification. The constructed PEFA-COF-based fluorescent sensing platform was successfully validated in complex water and milk matrices, achieving an excellent fluorescence quenching coefficient and a detection limit as low as 0.06 μmol/L. Collectively, this work not only deciphers the critical role of F···F interaction in pesticide recognition but also advances the function-led design of AIE-active COFs toward practical and robust pesticide residue monitoring in food supply chains.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Jiasen Shi,Sineng Yan,Yi Zhang,Man Yang,Zeyao Chen,Runjie Li,Yuyin Zhang,Peng Li,Qi Sui
A dipole engineering strategy was employed to construct ionic redox TP-X-COFs . • By varying the alkyl chain length, the local electrostatic microenvironment of TP-X-COFs was finely modulated. • TP‑P‑COF gives 16.28 mmol g⁻¹ h⁻¹ H₂ in seawater (2.6 times that in water), the highest enhancement factor for COFs. • The strong Cl⁻ affinity of the ionic framework optimizes polarization and promotes seawater splitting. Covalent organic frameworks (COFs) are promising photocatalysts for hydrogen evolution, yet their rational design for efficient high-salinity seawater splitting remains a considerable challenge. Here, a dipole engineering method was proposed in the construction of ionic redox TP-X-COFs by systematically varying the alkyl-chain length. Among them, TP-P-COF with propyl linkers achieves an optimal balance between charge separation and migration, delivering a superior hydrogen evolution rate of 6.25 mmol·g⁻ 1 ·h⁻ 1 in pure water. Strikingly, it further exhibits an enhanced photocatalytic activity of 16.28 mmol·g⁻ 1 ·h⁻ 1 in natural seawater, a 2.6-fold increase that marks the highest boost factor reported for COF-based photocatalysts. Detailed experimental and theoretical analyses reveal that the moderate dipole moment of TP-P-COF facilitates efficient exciton dissociation and charge carrier migration. Critically, its ionic framework displays a strong affinity toward Cl⁻ (adsorption energy: −1.56 eV), generating pronounced regional polarization and further optimizing the local electrostatic microenvironment for enhanced seawater-splitting activity. This work demonstrates that dipole engineering, together with the rational utilization of ionic components in seawater, provides a powerful strategy for the rational design of high-performance COF photocatalysts tailored for working in saline environments. Download: Download high-res image (163KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Qiong Shang,Huixia Feng,Jingpeng Liao,Shiyan Zhu,Haibin Wang,Yuan Zhao,Min Xie,Na Wen,Hongjing Wu
A series of PANI@ZIF-67 derivative/SEP composites are rationally designed via a stepwise optimization strategy. • The “reinforcing skeleton/skin” structure simultaneously constructs rich conductive networks and interfacial polarization while effectively avoid agglomeration of ZIF-67 derivative and PANI nanoparticles. • The optimized sample achieves a RL min of −57.67 dB at 2.09 mm, and with EAB of up to 4.87 GHz at 1.72 mm. • This work offers a feasible strategy for high-performance sepiolite-based microwave absorbers. Microwave absorbers with strong attenuation, broad bandwidth and thin matching thickness are highly desired for electromagnetic (EM) protection and stealth applications. Herein, sepiolite-supported PANI@ZIF-67 derivative ternary composites with a reinforcing skeleton/skin heterostructure were fabricated through room-temperature precipitation, thermal conversion and in-situ chemical oxidative polymerization. Sepiolite acted as a one-dimensional internal skeleton and heterogeneous nucleation platform, suppressing the agglomeration of ZIF-67 derivative nanoparticles and promoting multiple scattering of incident EM waves. The conductive PANI skin introduced continuous conductive pathways and abundant interfaces, enhancing conductive loss and interfacial polarization. By regulating the sepiolite content, the EM parameters were optimized, enabling a favorable balance between impedance matching and attenuation capability. The optimized composite delivered a minimum reflection loss of −57.67 dB at 12.16 GHz with a thickness of 2.09 mm and an effective absorption bandwidth of 4.87 GHz at only 1.72 mm. This work offers a feasible strategy for high-performance sepiolite-based microwave absorbers. Download: Download high-res image (567KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Ying Yan,Qianwen Zhang,Yuxin Shu,Zeyu Zuo,Shuoyue Li,Mama Embalo Samba,Wenxuan Xu,Lankun Cai
Photocathodic protection (PCP) provides a sustainable strategy for corrosion control, but conventional TiO 2 /CdS photoanodes remain limited by inefficient interfacial charge transfer and CdS photocorrosion. Herein, TiO 2 /Mn-CdS composite photoanodes were fabricated via anodic oxidation combined with the successive ionic layer adsorption and reaction (SILAR) method for the photocathodic protection of Q235 carbon steel (Q235 CS). The optimized photoanode, prepared using a 0.04 M Mn precursor solution (denoted as TiO 2 /Mn-CdS-0.04), exhibited a photocurrent density of 1590 μA·cm −2 . When coupled with Q235 CS, it induced a cathodic shift of the open-circuit potential to −1.30 V (vs. SCE) under visible-light irradiation. During a 24-day stability test, the photocurrent density remained above 1000 μA·cm −2 and the coupled potential remained approximately −0.95 V (vs. SCE). First-principles calculations indicated that Mn-induced electronic states facilitated carrier separation and interfacial charge transfer, suggesting that Mn incorporation promotes cascade charge transfer within the composite photoanode. This study demonstrates the potential of TiO 2 /Mn-CdS as a non-noble-metal photoanode for durable photocathodic protection of Q235 CS.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Chong Tan,Xin Lyu,Xiaole Weng,Kun Yang,Lifeng Cao
Per- and polyfluoroalkyl substances (PFAS) in firefighting foams represent a persistent source of groundwater contamination due to their extreme environmental stability and toxicological properties. This study provides a comprehensive characterization of PFAS in eleven in-use firefighting foams collected from China's Yangtze River Delta, integrating non-targeted screening with total oxidizable precursor (TOP) assays. A total of 185 distinct PFAS compounds were identified, including 119 anionic, 100 cationic, and 34 zwitterionic species, representing the most diverse PFAS profile reported to date for firefighting foams in the Yangtze River Delta. Parallel analysis detected 139 hydrocarbon surfactants, underscoring the chemical complexity of real-world foam residues. QSAR-ToxPi modeling classified the identified PFAS into three tiers, with 95 compounds (51.4%) falling into the high-hazard category. TOP assays demonstrated that ostensibly PFAS-reduced formulations contained precursor reservoirs capable of generating terminal PFOA at concentrations up to 5198.4 mg/L, nearly 30-fold above initial measurements. These findings demonstrate that expanding water-quality monitoring programs to include PFAS precursors is essential to improve risk assessments for AFFF-impacted groundwater and drinking water sources.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Ziteng Huang,Yaru Li,Yuyang Hu,Qiankun Xu,Danya Li,Juzhou Zhang,Xianbiao Wang
Friedel–Crafts acylation yields β-diketone polymer superior to Claisen condensation. • The probe exhibits a vivid green-to-blue shift and intensity enhancement with Al 3+ . • Conformation restriction by Al 3+ coordination enables fluorescence change. • Dual-mode sensing enables both visual screening and precise quantification. • Results in wheat food samples show high consistency with standard ICP-MS methods. Aluminum additives in flour-based foods pose safety concerns and require rapid monitoring. This study presents a high-performance β-diketone main-chain polymer fluorescence sensor synthesized via Friedel–Crafts acylation for specific aluminum detection. This preparation method yielded a polymer with superior sponge-like porosity and extended π-conjugation. Upon Al 3+ coordination, the probe exhibits a distinct fluorescence transition from dim green to brilliant deep blue, enabling visual identification. The response follows a positive cooperative logistic model, achieving a limit of detection of 1.78 μmol/L. Mechanistic studies attribute signal enhancement to a synergistic effect, where coordination restricts the conformational relaxation of the polymer backbone to suppress non-radiative decay while simultaneously increasing radiative oscillator strength. Validated in wheat derivatives with a calibration strategy, the method achieved quantitative results consistent with inductively coupled plasma mass spectrometry. This work highlights the value of backbone-integrated recognition sites and conformational restriction for sensing. A β-diketone main-chain polymer fluorescence sensor addresses the challenge of monitoring aluminum in wheat-based foods. The probe exhibits a positive cooperative logistic response to Al 3+ , characterized by a vivid green-to-blue emission shift. By leveraging a coordination-induced restriction of main-chain conformational relaxation mechanism, the sensor achieves excellent selectivity and sensitivity, allowing for both naked-eye inspection and precise instrumental quantification in real samples. Download: Download high-res image (140KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Qiankun Xu,Rui Wang
MOF-derived NiCo/NPC electrocatalyst was constructed with tailored M-N 4 coordination environments. • Ni incorporation regulated Co electronic structures for accelerated oxygen evolution reaction. • DFT calculations elucidated the electronic modulation mechanism and optimized OER energetics. The development of efficient, low-cost, and scalable oxygen evolution reaction (OER) catalysts is crucial for practical water electrolysis. Herein, a MOF-derived NiCo/NPC electrocatalyst containing predominantly atomically dispersed Co–N 4 /Ni–N 4 sites is prepared by controlled Ni incorporation into ZIF-67-derived porous carbon. The optimized 50% NiCo/NPC exhibits an overpotential of 207 mV at 10 m⋅A cm⁻ 2 , a Tafel slope of 51.6 mV⋅dec⁻ 1 , and stable operation for over 100 h, outperforming Co/NPC and commercial RuO 2 . Aberration-corrected HAADF-STEM directly visualizes atomically dispersed Co and Ni species, while synchrotron X-ray absorption spectroscopy confirms the Co–N 4 coordination environment and reveals that Ni incorporation modifies the electronic environment of the Co sites. Density functional theory calculations further show that Ni incorporation shifts the Co d -band center toward the Fermi level and lowers the energy barrier of the rate-determining step, accounting for the enhanced OER activity. In an anion exchange membrane water electrolyzer, the catalyst delivers current densities of 1000 and 4000 mA ⋅cm⁻ 2 at 2.02 and 2.46 V, respectively. This work provides an effective strategy for improving the OER performance of MOF-derived electrocatalysts through regulating the electronic structure of Co active sites. Download: Download high-res image (186KB) Download: Download full-size image Ni-doped ZIF-67 is converted via pyrolysis into morphology-retained Co–N 4 and Ni–N 4 single-atom active sites embedded in N-doped porous carbon (NiCo/NPC). Benefiting from the Ni-induced electronic modulation of Co active sites, together with the enhanced conductivity of the carbon framework, the catalyst achieves efficient and durable OER performance with a low overpotential.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Tian He,Shaosong Huang,Ping Chen,Guangzheng Zhuang,Bing Tang,Ping Li,Liying Bin,Yunqiang Yi,Weirui Chen,Laisheng Li
One-step pyrolysis enabled Fe/N co-doping to form CNT-confined Fe 3 C structures; • Fe 3 C-derived Lewis acidic sites served as the primary centers for activating O 3 ; • Fe 2+ /Fe 3+ redox cycling promoted ozone activation and ROS generation; • Confinement enhanced O 3 enrichment, •OH yields, and ion tolerance during FeN-BC/O 3 ; • •OH was confirmed as the key oxidizing species for IBP removal; Active metal leaching, inefficient ozone activation, and limited interfacial mass/electron transfer are key factors restricting the performance of conventional catalytic ozonation catalysts. To address these issues, a biomass-derived Fe/N co-doped carbon nanotubes with a nano-confinement structure (FeN-BC) was synthesized via one-pot pyrolysis of rapeseed straw, FeCl 3 •6H 2 O, and melamine at 700 °C under N 2 followed by acid washing and purification. SEM, TEM, and XRD results revealed that Fe and N co-doping promoted in-situ growth of carbon nanotubes with stable encapsulation of Fe 3 C nanoparticles by graphitic layers. In the catalytic ozonation of ibuprofen (IBP), FeN-BC achieved 91.5% removal within 60 min, outperforming sole ozonation and control catalysts (BC, Fe-BC, N-BC). On account of the synergistic function of Fe and N, the Fe 3 C active center exhibited excellent stability, with iron leaching remaining below 0.1 mg L −1 , whereas Fe-BC released 0.51 mg L −1 iron. In addition, FeN-BC retained good catalytic activity after five consecutive cycles. Furthermore, FeN-BC maintained excellent catalytic stability across pH 3–9 and with various inorganic anions (Cl − , SO 4 2− , NO 3 − , H 2 PO 4 − ). •OH was identified as the dominant reactive species, contributing 86.86% to IBP degradation. Electrochemical and DFT results demonstrated that the nano-confinement effect enhanced interfacial electron transfer, with Fe 3 C Lewis sites serving as the primary active center. IBP degradation followed three pathways, yielding 18 intermediates and accompanied by progressive detoxification. This work advances the understanding of nano-confinement enhanced ozone activation and promotes the development of sustainable biomass-derived catalysts for water purification. Download: Download high-res image (147KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）