ChemistrySelect
·
2025
·Vol. 10
·期 37
·e03497
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IF 2
Zilin Yang,Shuting Wang,Hongbo Jiang,Weixing Zhao,Meijuan Tian,Jingman Pang
A novel BaTiO 3 /Zn 2 TiO 4 /ZnO heterojunction composite was successfully synthesized via the molten salt method, and its piezoelectric catalytic performance for pollution degradation was evaluated with methyl orange (MO) as the target pollutant. After calcination at 900 °C for 3 h, the optimal sample demonstrated exceptional catalytic activity, with a MO degradation rate of up to 98.78%. Notably, even after four consecutive cycles, this catalyst maintained a degradation efficiency exceeding 85%, indicating favorable stability and reusability. Radical trapping experiments were carried out to explore the degradation mechanism, showing that silver nitrate (AgNO 3 ) significantly enhanced the degradation efficiency over time, while disodium ethylenediaminetetraacetate (EDTA-2Na), methanol (CH 3 OH), and tert-butyl alcohol (TBA) inhibited the reaction to varying degrees. The superior catalytic activity of the BaTiO 3 /Zn 2 TiO 4 /ZnO system is mainly attributed to the strong synergistic effect between its piezoelectric catalytic performance and peroxymonosulfate (PMS). During the piezoelectric activation of PMS for MO degradation, hydroxyl radicals (·OH), sulfate radicals (SO 4 −·), and superoxide anions (O 2 −·) serve as the main reactive oxygen species, playing a dominant role in the reaction. These findings further elucidate the piezoelectric catalytic mechanism of the BaTiO 3 /Zn 2 TiO 4 /ZnO system in MO degradation. Graphical The BaTiO 3 /Zn 2 TiO 4 /ZnO catalyst, under ultrasonic irradiation, synergistically activates peroxymonosulfate (PMS) and ambient oxygen. This process yields a suite of reactive species, including sulfate (SO 4 · − ) and hydroxyl (·OH) radicals, as well as superoxide anion radicals (·O 2 − ), which collectively degrade methyl orange (MO), resulting in the complete mineralization to CO 2 and H 2 O.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Lei Liang,Yakun Tang,Yue Zhang,Sen Dong,Lang Liu,Zhiguo Jia
Hydrogels are attracting more and more attention in solar interfacial water evaporation due to their highly tunable physicochemical structure. In particular, the electrostatically-based polyelectrolyte hydrogel evaporator not only effectively activate water molecules through charged functional groups but also hinder the transport of charged ions in saline solutions, achieving a balance between high evaporation performance and excellent salt resistance. However, single-component polyelectrolyte hydrogels carry only one type of charge, and the inevitable repulsive interaction creates space to accommodate free water, resulting in a reduction of intermediate water content, thereby negatively impacting efficient water evaporation. Here, we introduce a carbon-based hydrogel evaporator fabricated by combining a hydrogel prepared from sodium alginate and chitosan via non-covalent interaction with coal pitch-based porous carbon. The electrostatic attraction between these two oppositely charged components minimizes the inter-chain gaps in the hydrogel, increasing the intermediate water content to 74.8 %. Additionally, the charged functional groups effectively restrict the transmission of charged ions in the salt solution during desalination processes, overcoming the challenge of salt blockage. Therefore, the evaporator achieves an evaporation rate as high as 2.10 kg m −2 h −1 and demonstrates excellent salt resistance in a purification test using nearly-saturated saline water.
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DESALINATION
·
2026
·
IF 9.9
Anrong Yao,Xingwei Fu,Qian Xu,Chang Liu,Yunbo Mo,Qinglan Xue,Jiaojiao Shang,Jianwu Lan,Shaojian Lin
Eliminating various organic pollutants from wastewater continues to pose a major environmental issue. Herein, CO 2 -responsive magnetic bio-aerogels (Ag/Fe-NC@DCG) integrating “smart” adsorption and photo-Fenton-like degradation were constructed by embedding surface plasmon resonance (SPR)-enhanced MOF-derived Ag/Fe nanocarbon (Ag/Fe-NC) into cellulose nanocrystal reinforced gelatin aerogels, followed by surface functionalization with a CO₂-responsive silane coupling agent ( N, N -diethyl-3-aminopropyltrimethoxysilane). The resulting aerogels exhibited outstanding adsorption capacities toward charged pollutants, reaching 859.62 mg/g for negatively charged methyl orange (MO) and 635.92 mg/g for positively charged methylene blue (MEB), governed by electrostatic interactions and hydrogen bonding. The adsorption process was well described by the Langmuir adsorption isotherm model and pseudo-second-order adsorption kinetic model. Remarkably, CO 2 served as a trigger gas to enable rapid and selective adsorption of negatively charged organic pollutants from the mixture, thereby realizing CO 2 -regulated selective adsorption. As anticipated, under visible light irradiation in the presence of peroxymonosulfate (PMS), the Ag/Fe-NC component efficiently catalyzed photo-Fenton-like reactions, leading to significantly enhancing removal efficiencies for both charged and neutral organic pollutants. For neutral bisphenol A (BPA) and amphoteric tetracycline hydrochloride (TCH) that were initially unadsorbed, their removal efficiencies rose dramatically from 5.24% and 12.79% to 90.67% and 97.40%, respectively. Additionally, the aerogels demonstrated excellent recyclability, mechanical robustness, and antibacterial activity. Overall, this work presents a versatile and sustainable aerogel platform that integrates CO 2 -triggered selective adsorption with photo-Fenton-like degradation, offering a prospective pathway for wastewater remediation.
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RSC Advances
·
2026
·Vol. 16
·期 7
·6210-6216
·
IF 4.6
Jian Wang,Feng Xu,Zhenzhong Liu,Linli Xu,Mingyue Liu,Ye Deng,Yue Sun,Yanjing Zhang,Dan-Hua Wang,Youju Huang
Herein, we report a novel method to synthesize the dumbbell AuNRs@BCP nanoparticles via UV light-initiated RAFT polymerization-induced self-assembly in situ. This strategy provides a promising alternative for synthesizing asymmetric inorganic/polymeric hybrid nanoparticles with tunable morphologies. Shape-dependent surface-enhanced Raman scattering (SERS) experiments in dilute dispersions, along with electric field simulations, were conducted. Due to the plasmonic hotspots formed between the AuNRs and BCP domains, the dumbbell AuNRs@BCP nanoparticles were ideal for generating strong and reproducible SERS signals for methyl orange.
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PubMed
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Jiahuan Wang,Zuozhu Yin,Xiangyu Han,Yongcun Ma,Zhen Hong,Chan Xie,Zhiyang Jiang,Yidan Luo
Avionics equipment often use epoxy resin as encapsulation material. However, epoxy resins have limited performance in terms of heat dissipation, electromagnetic shielding, and resistance to moisture and heat. As the integration of avionics continues to increase, epoxy resins have become more and more difficult to meet the stringent requirements for high reliability of avionics in the aerospace industry. In this study, inspired by the unique structure of lotus leaves, a thin film composite of mesophase carbon microspheres (MCMB) and manganese dioxide (MnO 2 ) was prepared on the surface of a copper foil using a mechanical hybrid spraying method. The film exhibits excellent superhydrophobicity with a water contact angle of 161.1°. This performance was attributed to its micro- and nanoscale roughness structure and low surface energy modification by POTS/stearic acid. In terms of infrared stealth, the composite material effectively suppresses thermal radiation through a trapped air layer and gradient thermal resistance design. In addition, the material’s electromagnetic shielding effectiveness in the 2.4 GHz band reaches −56 dB, originating from the synergistic effect of reflection loss in the copper substrate and dielectric absorption in MnO 2 . At the same time, the three-dimensional network constructed by the MCMBs gives the material high thermal conductivity, which significantly improves the thermal management efficiency. The composite film also has good abrasion resistance, chemical stability and self-cleaning function, which is suitable for avionics and other fields of protection, providing a new solution to solve the problem of avionics packaging.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 7.7
Hua Liu,Jinhua Zhang,Minyao Zhou,Zhaorui Liu,Junyao Qian,Jinxiang Li
The sulfidation of zero-valent iron (S-ZVI) has emerged as an effective strategy to enhance reactivity for contaminants removal, yet the underlying mechanisms remain incompletely understood. This study explores the enhanced reactivity of S-ZVI derived from five different commercial sources in the aerobic removal of four representative azo dyes. Sulfidation converts the passive Fe-oxide film into a conductive FeS x layer, thereby facilitating interfacial electron transfer from the Fe 0 core to adsorbed dye molecules, and promoting sustained Fe(II) regeneration for decolorization of azo dyes. It demonstrates that the rate constants of S-ZVI for azo dyes removal exhibited 1.1–2.3 fold higher than unsulfidated ZVI, with strong linear correlations across dyes and sources (R = 0.69–0.98), suggesting predictable reactivity scaling. Correlation analysis, spectroscopic evidences and chelation–quenching tests jointly confirm that low charge-transfer resistance and sustained Fe(II) release govern the enhanced reductive reactivity, whereas radical-mediated oxidation contributes only as a secondary pathway. Consequently, S-ZVI exhibited efficient azo-bond cleavage, partial mineralization, and retained over 80% of its reactivity toward azo dye after six reuse cycles under aerobic conditions. Overall, this work establishes quantitative structure–reactivity relationships linking sulfur speciation, interfacial electrochemical properties, Fe(II) dynamics, and degradation kinetics, providing a predictive framework for designing durable and high-performance ZVI-based materials for wastewater treatment.
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PubMed
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CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 1.9
Yuanyuan Hu,Yan Tan,Huangqing Liao,Shiyan Long,Jie Huang,Hui Zhang,Gui Chen,Bailin Xiang
The environmental pollution resulting from organic dye wastewater presents a significant threat to human health. Photocatalysis has emerged as a highly promising approach for mitigating wastewater contamination. In this study, a novel synthetic strategy was developed using NH 2 -UiO-66 as a template. By precisely controlling the amount of Ag + ions introduced into the NH 2 -UiO-66 precursor and employing a straightforward reduction approach, the Ag-NH 2 -UiO-66 composite photocatalyst was successfully synthesized. Comprehensive characterization via X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray photoelectron microscopy (XPS) confirmed that the incorporated Ag+ ions were effectively reduced to metallic silver and uniformly dispersed within the porous framework. Photocatalytic degradation experiments employing Rhodamine B (RhB) as a model pollutant under ultraviolet irradiation demonstrated that the catalyst with a silver loading of 0.05 mol/L achieved a maximum degradation efficiency of 91% within 150 min, markedly surpassing the 39% efficiency exhibited by pristine NH 2 -UiO-66. Furthermore, cyclic stability tests verified the catalyst's excellent reusability and structural durability. Mechanistic investigations revealed that superoxide radicals (O 2 − ) served as the predominant reactive species responsible for RhB degradation in the Ag-NH 2 -UiO-66 system. This work presents a simple and effective strategy for fabricating highly efficient and stable MOF-based photocatalysts for the remediation of dye-contaminated wastewater.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 7.7
Na-Na Ran,Quan Luo,Hong-Wei Li,Yuqing Wu
Herein, a novel ratiometric fluorescent nanosensor was prepared by in-situ incorporation of Eu 3+ into nitrogen-rich carbon dots (Eu-CDs) via a one-step hydrothermal route. The obtained Eu-CDs display dual emission: a strong blue band at 440 nm (carbon core) and a weak red band at 615 nm ( 5 D 0 → 7 F 2 transition of Eu 3+ ). Upon titrating oxytetracycline (OTC) into the system, the blue signal remained invariant as an internal reference, whereas the red emission dramatically enhanced by the OTC-mediated antenna effect. The intensity ratio ( I 615 / I 440 ) increases linearly with OTC concentration over 1.0 – 50 µM, affording a limit of detection of 35 nM. Concomitantly, the dispersion exhibits a naked-eye color switch from blue to red under 365 nm UV illumination. Mechanistic investigations reveal that the specific recognition originates from (i) coordination between Eu 3+ and the β-diketone moiety of OTC and (ii) hydrogen-bonding interactions between OTC and the CDs surface. Although the probe is highly selective toward OTC over common ions and amino acids, it suffers from cross-reactivity among tetracycline antibiotics. This limitation was overcome by coupling the ratiometric read-out with linear discriminant analysis (LDA) of dual-mode (fluorescence and absorption) data, enabling 100% correct classification of OTC, tetracycline (TC), chlortetracycline (CTC), and doxycycline (DC) in both individual and mixed samples. The proposed strategy furnishes a simple, green and low-cost route to Eu-CDs and establishes a robust, portable platform for ultrasensitive quantification and discriminative sensing of tetracycline antibiotics in complex matrices.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Jian Ji,Guanhui Mai,Peidong Zhang,Jiafen Chen,Yuliang Mai,Jiazhi Chen
Tribocatalysis is an emerging methodology for water purification by harnessing frictional energy. BaTiO3 has shown promising activity in the tribocatalytic degradation of organic pollutants; however, further performance improvement through structural and surface engineering remain challenge. Herein, a facile wet chemistry method was employed to modify the surface of commercial BaTiO3 by depositing TiOx colloids, which enhanced the reaction rate from 0.080 h-1 for pristine BaTiO3 to 0.272 h-1 for BaTiO3 modify by TiOx colloids. The catalysts were characterized by XRD, TEM, XPS, and Raman and the results indicated that the modified BaTiO3 consisted of a BaTiO3 core encapsulated by an ultrathin TiOx shell with an increased concentration of oxygen vacancies. UV-vis, PL spectra, EIS, and DFT calculations demonstrated that the TiOx modification effectively narrows the band gap energy and promotes the separation of electron-hole pairs during tribocatalysis, thereby facilitating the production of more reactive species. Combining EPR analysis and quenching tests, tribogenerated holes were identified as the predominant reactive species surpassing the contributions of •O2- and •OH. This study highlights the efficacy of the wet chemistry approach for the rational design of advanced tribocatalysts, offering new insights into optimizing catalytic materials for the degradation of organic contaminants.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Jiajie Shi,Yang Liu,Yongsheng Chen,Zhenggong Wang,Jian Jin
Membrane-based separation of nonpolar solvents is critically important for petroleum refining, chemical production, and food processing industries. Although membrane technology provides energy-saving advantages, conventional organic nanofiltration membranes suffer from inadequate separation performance in nonpolar systems, hindering their practical deployment. Covalent organic frameworks (COFs) emerge as an ideal platform for this application due to their unique combination of chemical robustness, high porosity, and precisely adjustable pore structures. In this work, we present an innovative strategy that integrates trifluoromethyl-functionalized COFs with surfactant-assisted interfacial polymerization to achieve high-flux nonpolar organic solvent nanofiltration. The resulting COF membranes demonstrate remarkable separation capabilities, achieving an ultrahigh hexane permeance of 251.4 L m −2 h −1 bar −1 and a remarkable 96.2% rejection for lecithin in hexane solutions, surpassing all previously reported OSN membranes. This innovative strategy not only addresses current limitations in nonpolar solvent separation but also establishes a new paradigm for developing high-performance separation membranes, with significant potential for industrial applications.
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Journal of Water Process Engineering
·
2026
·
IF 6.7
Fan Yin,Zihui Lin,Hailong Lu,Chunmin Xu,Hui Chen,Long Cheng
Given the limited performance of traditional biochar adsorbents, this study proposes an innovative two-step pyrolysis strategy for the precise synthesis of N F double-site co-doped biochars (NFBCs). This strategy effectively regulates the pore structure and surface chemistry of the material. The optimized material (NFBCs-1:3) exhibited an ultra-high specific surface area (2187 m 2 /g) and abundant active sites. Its maximum adsorption capacity for norfloxacin (NOR) reached 552.65 mg/g, significantly exceeding that of traditional biochar and most reported materials. The adsorption process followed pseudo-second-order kinetics and the Sips model. Mechanistic studies showed that its excellent performance stems from the synergistic effects of pore filling, π-π interactions, hydrogen bonding, and electrostatic interactions, with the unique N F double-site regulation of the electronic structure as the key. In addition, NFBCs-1:3 maintained excellent adsorption performance across a wide pH range, under coexisting ion interference, and in a variety of real-world water matrices, confirming its great application potential in the treatment of complex real-world wastewater. This study provides a new idea for the design of efficient and stable non-metal-doped carbon-based adsorbents.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xiaoxuan Xue,Buwen Jiang,Zhuoya Li,Yufu Jiang,Kewei Zhang,Zhijian Ji,Guojun Song,Chao Yang
The efficient degradation of organic pollutants remains a significant challenge in the field of catalysis, and the recycling of granular catalysts remains a persistent challenge during repeated usage. Herein, a ZnO@PVDF(Polyvinylidene Fluoride)-Nanopillar membrane has been prepared by combing the template and hydrothermal method and was applied in degrading methyl orange(MO) dye. The catalytic degradation rate attained 98.05 % at 360 min under the condition of ultrasonication and ultraviolet light being attributed to the composition and the bionic pine branch structure under a synergistic mechano(contactelectric & piezoelectric)-photocatalytic tri-catalysis. The PVDF-Nanopillar substrate as a dielectric material served as the reservoir of electron hole pair and prolonged their recombination by engineering a PVDF/ZnO nanorod heterojunction. Furthermore, the robust and reusability of this composite membrane were detected and the results indicated the membrane could also catalyze the degradation of dexamethasone, and its morphology and composition changed little comparing that in the recycling experiment after with before. Remarkably, the designed ZnO@PVDF-nanopillar membrane achieves ≈ 100 % organic pollutant degradation efficiency and enables facile catalyst recovery, offering a practical solution for sustainable water treatment applications, improving the catalytic convenience. This work provides new design principles for constructing organic-inorganic heterojunctions in environmental catalysis, offering fresh insights into hybrid material engineering.
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