ChemistrySelect
·
2026
·Vol. 11
·期 25
·e73786
·
IF 2.3
Han Li,Ziqiang Wan,Zhaojiang Yin,Qian Long,Yanqing Xu,Xueke Chen,Hanfeng Cui,Fusheng Liao
Sulfur dioxide (SO 2 ) and its derivative bisulfite (HSO 3 − ) are widely utilized in food processing but pose potential health hazards at excessive concentrations, highlighting the critical need for rapid and sensitive detection methods for sulfite/bisulfite species. Herein, we report the synthesis of a novel fluorescent probe TPA-OH featuring a donor–π–acceptor (D–π–A) architecture, with triphenylamine (TPA) as the electron-donating unit and 7-hydroxy-1-indanone as the electron-withdrawing moiety. The conjugated C═C double bond enables intramolecular charge transfer (ICT) within the probe. Upon interaction with sulfite/bisulfite species, presumably through nucleophilic addition to the C═C bond, the π-conjugated system is disrupted, resulting in a pronounced fluorescence enhancement accompanied by a distinct blue shift. Under optimized conditions, TPA-OH exhibited a low detection limit of 0.053 µM based on repeated calibration experiments and a broad linear range of 5.0 × 10 − 8 ∼1.0 × 10 − 5 M, along with good stability and strong anti-interference capability toward sulfite/bisulfite detection. This probe was successfully applied for HSO 3 − quantification in real samples and fluorescence imaging of exogenously added HSO 3 − in HepG-2 cells under controlled experimental conditions. Its favorable cytocompatibility supports its use for fluorescence imaging of exogenous sulfite/bisulfite species in living cells under the current experimental conditions. Graphical A novel D–π–A fluorescent probe (TPA-OH) was designed using a triphenylamine donor. The probe detects HSO 3 − via a specific nucleophilic addition disrupting π-conjugation. TPA-OH exhibits an ultralow detection limit of 0.05 nM and broad linear range. Successfully applied for HSO 3 − detection in foods and fluorescence imaging in living cells.
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Ying Gao,Ru Yan,Hualei Cheng,Ping Wen,Rui Dong,Mingjin Fan
One‑pot cation intercalation and interfacial charge programming for α‑Ni(OH)₂ nanosheets. • Unique intercalation‑ionization dual effects expand interlayer spacing and reverse surface charge polarity. • Central heteroatoms (N vs. P) dictate heterolytic vs. homolytic tribochemical pathways. • Ni‑P additive achieves 64.4% friction reduction, 95.1% anti‑wear and 500 N load‑carrying capacity. Layered metastable α-Ni(OH) 2 is a promising lubricant additive due to its tunable interlayer chemistry, yet its intrinsic thermodynamic instability and weak positive surface charge severely hinder interfacial adhesion, oil dispersion and tribological performance. Herein, we develop a facile one-pot interfacial charge programming strategy via cation engineering to modify α-Ni(OH) 2 nanosheets, using tetrabutylammonium hydroxide (TBAOH) and tetrabutylphosphonium hydroxide (TBPOH) as trifunctional alternatives versus NaOH to accomplish Ni 2 ⁺ precipitation, organic cation intercalation and surface charge polarity transition, simultaneously. Compared to traditionally fabricated Ni-Na, the intercalated Ni-N (TBA + ) and Ni-P (TBP + ) exhibit expanded interlayer spacings, exfoliated thin flexible nanosheets, increased specific surface areas and negative surface potentials. Utilized as additives in PAO 10, the intercalation-ionization dual effects leverage molecular rollers, electrostatic anchoring and tribochemical film formation. Combined with multiple characterizations and theoretical calculation, this work reveals that the distinct chemical and electronic properties of the central N/P atoms in TBA + and TBP + leads to preferential heterolytic cleavage for Ni-N and homolytic cleavage for Ni-P under nanoconfinement, friction, and possible Ni-catalyzed conditions, which governs the evolution pathway and final composition of the interfacial tribofilm. As a result, Ni-P delivers the optimal friction-reducing (64.4%), anti-wear (95.1%), load-carrying capacity (500 N), and long-term durability. This work clarifies the structure-tribology relationship governed by intercalation-ionization dual effects, and provides a novel strategy for designing high-efficiency layered lubricant additives. Download: Download high-res image (327KB) Download: Download full-size image
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高影响因子
DYES AND PIGMENTS
·
2026
·
IF 3.9
Xin Yan,Lan Yang,Hao Zhang,Sihan Li,Jing Ouyang,Chunfang Du
Methyl orange was in-situ converted into carbon layers on HNTs. • Carbonization and alkali-etching realized the interface engineering and pore regulation. • HNTs framework prevented the agglomeration of Ni(OH) 2 nanosheets. • The composite removed 98.1% of MO and achieved a maximum capacity of 380.7 mg g −1 within 5 min. In this study, carbonized halloysite nanotubes were obtained by thermal treatment of methyl orange (MO)-coated HNTs followed by alkali activation, which were then used as supports to construct a series of Ni(OH) 2 /carbonized halloysite nanotube composites (denoted as NCHB x - y ) to further remove MO. The as-prepared adsorbent NCHB 0.5 -500 could remove over 98.1% of MO (40 mg L −1 ) and achieve a maximum adsorption capacity of 380.7 mg g −1 within 5 min. Notably, NCHB 0.5 -500 exhibited the strong adaptability to pH and temperature variations, along with the excellent selectivity and versatility in six-mixed-dyes and multiple-anions systems. The adsorption mechanism studies indicated that the tubular HNTs served as a robust framework to prevent Ni(OH) 2 agglomeration, while the alkali-etching constructed a rich mesoporous structure and the in-situ MO modification enriched surface functional groups and introduced π-π stacking interactions. These structural advantages combined with hydrogen bonds and electrostatic attraction synergistically enhanced the interaction between the adsorbent and MO molecules, thereby improved the adsorption performance. This study develops a recommendable method for constructing high-performance and low-cost adsorbents based on clay minerals for wastewater treatment and contributes a sustainable "waste-treat-waste" strategy for functionalizing natural clay minerals. In-situ MO modification and alkali-etching for HNTs contributed to a rich mesoporous structure and enriched surface functional groups, both of which were favorable for enhancing the adsorption efficiency. Download: Download high-res image (306KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Kaixuan Wang,Fei Teng,Zixu Zhang,Xiaoxia Ou,Xiaofeng Chen,Junfeng Niu
Synthesized the metal-free B and N co-doped porous carbon (B X NPC) catalysts. • Promoting •OH generation via B doping on B 50 NPC revealed by theoretical calculations. • •OH and 1 O 2 oxidation synergistically enhanced refractory antibiotics removal. • Treating actual pharmaceutical factory wastewater with a low energy consumption. • Excellent detoxification and disinfection performance of B 50 NPC electro-Fenton. Heterogeneous electro-Fenton (EF) is an attractive process for refractory and hazardous pollutants degradation that usually relies on •OH produced via the in-situ decomposition of electro-generated H 2 O 2 on metal-based catalytic sites, which faces the problems of metal shedding and leaching under acidic or even neutral conditions. Designing and investigating a bifunctional metal-free catalyst is a sensible strategy for the development of heterogeneous EF process. Herein, the bifunctional metal-free boron and nitrogen co-doped porous carbon (B X NPC) catalysts were prepared. Total organic carbon removals of hazardous and refractory antibiotics (ciprofloxacin, levofloxacin, sulfamethoxazole, tetracycline, and norfloxacin) by B 50 NPC EF process were 67 ± 2% − 90 ± 2% in 3 h. This process could efficiently treat actual pharmaceutical factory wastewater that chemical oxygen demand (COD) removal was 86.8 ± 1.3% with specific energy consumption of 3.7 ± 0.2–6.7 ± 0.1 kWh (kg COD) −1 superior to previous reports (5.5–290 kWh (kg COD) −1 ). Theoretical calculations and experiments revealed that the B sites and carbon defects in B 50 NPC promoted •OH and 1 O 2 generation, respectively, synergistically enhancing antibiotics removal. The results of toxicity evaluation and E. coli deactivation demonstrated excellent detoxification and disinfection performance. The results gain deep insights into the O 2 reduction mechanism of bifunctional metal-free B X NPC and developing an energy-efficient electrochemical process for promoting the decomposition of hazardous and refractory antibiotics. Download: Download high-res image (218KB) Download: Download full-size image
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PubMed
高影响因子
Materials Today Bio
·
2025
·
IF 10.2
Chenfang Miao,Menghan Zhang,Ying Zheng,Xiaoyan Lin,Shuangying Yang,Linlin Xu,Sitong Lu,Zhengjun Huang,Jianyong Huang,Yanjie Zheng,Shaohuang Weng
Aminophylline (AMP), a xanthine-derived bronchodilator with a narrow therapeutic window, requires timely plasma concentration monitoring and pharmacokinetic (PK) studies for safe medication. However, efficient and sensitive detection methods remain limited. In this study, high quantum yield carbon dots (CA/EDA-CDs) were synthesized via a hydrothermal method using riboflavin as the carbon source, citric acid and ethylenediamine as functionalizing agents and dopants. The luminescent structure of CA/EDA-CDs, featuring a π-conjugated system (aromatic C=C and graphite N) and surface chromophores (C=N/C=O) connected via C-N, C-O, and hydrogen bonds, was controllably modulated by hydroxyl radical (·OH). Upon ·OH exposure, the emission band gaps of CA/EDA-CDs at 3.52 eV and 5.21 eV disappeared, while a new level at 2.63 eV emerged, leading to a quantitative and selective fluorescence quenching of CA/EDA-CDs to ·OH. Leveraging xanthine oxidase (XOD)-mediated AMP oxidation to hydrogen peroxide (H 2 O 2 ), which subsequently reacted with Fe 2+ to generate ·OH, a sensitive and accurate fluorescence method using CA/EDA-CDs as probe was fabricated for monitoring AMP with excellent performance. Furthermore, the developed fluorescence strategy was controllably applied to PK studies in rats administered intravenous AMP (11.25 mg/kg and 22.50 mg/kg), yielding parameters consistent with clinical data. These findings underscore the potential of CA/EDA-CDs for rapid and accurate AMP detection, addressing the clinical need for a simple and rapid monitoring method.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yuanting Wu,Bocheng Zhang,Xuhua Liu,Jingyue Hu,Yunlong Xue,Ou Hai,Hulin Liu,Xinmeng Zhang
The low specific capacity of capacitor electrode materials has been the main problem restricting their development. Compared with β-phase CoNi LDH, α-phase CoNi LDH has high specific capacity and cycling stability, and has broad application prospects, but there are fewer related studies. In this paper, the preparation of α-phase CoNi LDH is realized by introducing Cl − and WO₄ 2− intercalation into CoNi LDH, and the mechanism of the intercalation ions on the enhancement of the electrochemical properties of the LDH is deeply investigated. Different charge densities and ionic radii of the intercalation anions affect the valence states of the cations in the main LDH layer as well as the spacing of the LDH layers, and phase structure. Cl − possesses a smaller ionic radius and lower charge density than WO 4 2− , and changed the electronic as well as the phase structure of LDH by bonding with doped Co atoms, which induces the formation of interlayer water molecule chains, facilitating electron transfer and structural stabilization. Remarkably, the specific capacity of CoNi-Cl LDH/NF (Cl − inserted CoNi LDH) electrode at 1 A g −1 (2828.74 F g −1 ) is 4 times that of CoNi LDH/NF and 1.9 times that of CoNi-W LDH/NF (WO 4 2− inserted CoNi LDH) respectively, and remained 88.7 % constant after 5000 cycles at 10 A g −1 . This study provided a new idea for the use of anionic intercalated LDH to modulate the phase structure to enhance the electrochemical performance of electrode materials.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Tingyue Gong,Minghuo Wu,Shuo Liu,Yufeng Hu,Yiwen Zhang,Hao Zhou
The generation of high-valent cobalt-oxo species Co(IV)=O for the removal of organic pollutants has been challenging due to the low conversion efficiency of Co(III)/Co(II) and the high activation energy barrier of Co(II)-oxidant complexes. Here, we introduced oxygen vacancies into the material by incorporating Co(OH) 2 with chitosan to achieve a nano-complex Co(OH) 2 @CS, which was applied in the activation of peracetic acid (PAA) as oxygen vacancies could optimize the Co 3d orbital, improve the electron distribution in Co(OH) 2 , and accelerate activation of PAA. The reactive species were characterized by reactive oxygen species quenching, phenylmethylsulfoxide probing, and electron paramagnetic resonance (EPR), and the results confirmed that the Co(IV)=O was the predominant substance for the degradation process. After a systematical investigation of the reaction conditions, complete degradation of 4 typical SAs (10 mg/L) was achieved in 8 min. In addition, the system showed remarkable resistance towards inorganic (Cl - , H 2 PO 4 - and NO 3 - ) and organic compounds (humic acid) in real water (pond water and seawater). The degradation products/intermediates from sulfamethoxazole (SMX) were identified using liquid chromatography-high resolution tandem mass spectrometry, and the toxicity of these products was investigated by computational toxicology. It was found that the toxicity of most products was lower than their precursor SMX in terms of acute (all) and chronic toxicity (6 out of 7), indicating that this Co(OH) 2 @CS/PAA system was an environment-friendly approach for the treatment of SAs-containing wastewater.
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高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Mumtaz Nighat,Li Yanchun,Artiaga Ramón,Guo Qian,Mumtaz Amina
A major challenge in polymer composite research is accurately predicting thermal degradation behavior under different heating conditions while effectively distinguishing primary polymer decomposition from filler-related mass loss. This study introduces a novel approach by employing a logistic derivative function fitting method, which allows for the clear separation of magnesium hydroxide (MH) dehydration from the main degradation of linear low-density polyethylene (LLDPE). Understanding the thermal stability of LLDPE composites is crucial for enhancing fire safety and long-term durability in industrial applications. This study investigates the effect of MH and multi-walled carbon nanotubes (MWCNTs) on the thermal degradation of LLDPE under a nitrogen atmosphere, using non-isothermal thermogravimetric analysis (TGA). Pure LLDPE (PE), LLDPE/MH (mPE), and LLDPE/MH/MWCNTs (mcPE) composites were tested at four heating rates (5, 10, 15, and 20 K min –1 ). The degradation kinetics were analyzed using ASTM E698 and Ozawa–Flynn–Wall classical methods, alongside a logistic-based model that enhances the accuracy of degradation predictions. The results revealed that while the main degradation process of LLDPE remains largely unchanged, secondary degradation reactions were effectively suppressed by the fillers. Additionally, the logistic model allowed for accurate estimation of degradation behavior at untested heating rates. This methodology provides a powerful tool for optimizing polymer composite formulations, particularly in cable insulation and fire-retardant coatings, where enhanced thermal stability is essential for safety and material longevity.
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高影响因子
FUEL
·
2022
·
IF 8.035
Zhuwei Yang,Xiang Gong,Linsen Li,Zhao Jiang,Riguang Zhang,Tao Fang
Liquid organic hydrogen carriers (LOHC) are considered as the promising candidates for large-scale hydrogen storage. The N -ethylcarbazole/dodecahydro- N -ethylcarbazole (NECZ/12H-NECZ) system has received increasing attention due to its excellent comprehensive properties in the hydrogen storage candidates. In this work, the Pt/SiO 2 -TiO(OH) 2 catalysts are synthesized and show good activity, selectivity and stability for 12H-NECZ dehydrogenation reaction. Among them, the 2.5 wt% Pt/SiO 2 -TiO(OH) 2 catalyst shows the best dehydrogenation performance with 5.75 wt% H 2 release amount and 98 % selectivity of NECZ. Combined with XRD, HRTEM, ATR-FTIR, XPS and EPR analysis, it is found that the oxygen vacancy concentration in Pt/SiO 2 -TiO(OH) 2 is significantly enhanced due to the formation of Si-O-Ti species compared with Pt/SiO 2 and Pt/TiO(OH) 2 , which strengthens the SMSI (strong metal-supporting interaction) effect between metal Pt and support SiO 2 -TiO(OH) 2 . The optimized d-band center of catalyst is beneficial for accelerating the sluggish kinetics of the rate-limiting step of the whole dehydrogenation reaction. Furthermore, compared with the results by replacing SiO 2 with Al 2 O 3 or CeO 2 , it is indicated that the introduction of oxides mainly plays the role of regulating the surface electronic state of TiO(OH) 2 and increasing the oxygen vacancy concentration.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Na Ye,Pengcheng Zhao,Xiaoying Qi,Riguang Zhang,Binhang Yan,Wenchao Sheng,Zhao Jiang,Tao Fang
Engineering high-performance inexpensive TaN-modified Pd-based nanostructures for alkaline methanol oxidation reaction(MOR) has attracted extensive attention, yet the related enhancement mechanism of TaN for MOR remains lacked. The core-shell like Pd 3 Ni 1 -TaN/C catalyst decorated with Ni(OH) 2 /NiOOH that contains highly dispersed Ni sites and nitrogen defects has been fabricated for the first time. The unsaturated coordination environment and core-shell like morphology of Pd 3 Ni 1 -TaN/C bring fruitful active sites and a down-shifted d -band center, making it a highly-efficient electrocatalyst for alkaline MOR (17.3-fold that of commercial Pd/C). Besides the electronic effects and surface defect sites of Pd 3 Ni 1 -TaN/C, TaN also helps MOR proceed via HCOO ad pathway (non-CO) accompanied by enhanced OH adsorption induced by the addition of Ni. DFT(Density Functional Theory) calculations also further confirm the energy barrier of the formation of HCOO ad intermediate and desorption energy of CO on Pd 3 Ni 1 -TaN/C are reduced. The introduction of Ni species and nitrogen vacancies enhances the CO tolerance evidently.
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Mingxiong Lin,Ruodan Cao,Yifei Luo,Tingshi Zhang,Zanyong Zhuang,Yan Yu
Rational design of heterojunctions as photocatalysts that can help alleviate the energy and environmental crisis relies on the efficient electron transfer to the catalytically active sites. In this work, a robust metal–organic framework (MOF)-based heterostructured catalyst for the CO2 reduction reaction (CRR) was reported, taking advantage of a synergy effect between ultrathin (1.5 nm thickness) Ni-rich Ni(OH)2 nanosheets (NSs) and the highly stable and conductive Fe-rich Prussian blue (PB). This Ni(OH)2/PB photocatalyst can attain an optimal CO evolution rate of 108.8 mmol h–1 g–1 and a high CO selectivity (88.2–95.0%) in the CRR. The stable PB helps atomically thin Ni(OH)2 NSs to be well-dispersed and exposed in the heterojunction. A built-in electric field found at the interface of the bulk-sized PB and the ultrathin Ni(OH)2 further directs the electron transfer. Intriguingly, the conductive PB can quickly capture the electrons from the Ru-based photosensitizer and then rapidly sends them to the CRR-active Ni(OH)2 in the Z-scheme Ni(OH)2/PB system, accounting for its high efficiency and high selectivity over CO2 reduction into CO. The findings underline the versatility and the mechanistic response of MOFs in constructing advanced catalysts.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xinjuan Du,Jindou Hu,Jing Xie,Aize Hao,Zhenjiang Lu,Yali Cao
The convenient modification of transition metal and the simultaneous adjustment of energy band are effective measures to improve the photocatalytic activity of titanium dioxide but remains challenging in photocatalytic hydrogen evolution field. Herein, In(OH) 3 -TiO 2 heterostructures were constructed by solid-state synthetic strategy under room temperature for tuning the band structure and accelerating the photoexcited charge separation to enhance the photocatalytic activity for hydrogen evolution. By the quantified modification of In(OH) 3 , the obtained In(OH) 3 -TiO 2 delivers an appreciable photocatalytic activity and stability for hydrogen evolution, which is 15.7 folds superior to commercial P25. Due to the narrowed band gap, the increased charge carrier density, the restrained recombination rate of photoexcited electron-hole pairs and the accelerated photogenerated charge separation, the In(OH) 3 -TiO 2 heterostructures thereby achieve the boosted photocatalytic hydrogen evolution performance. This work provides a feasible strategy to enhance the photocatalytic hydrogen evolution of TiO 2 via tuning the band gap and accelerating the photoinduced charge separation.
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高影响因子
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