ChemCatChem
·
2026
·Vol. 18
·期 13
·e70894
·
IF 4.1
Siqi Tan,Jie Gu,Kexin Sha,Yihan Jiao,Yanxi Wu,Yiru Wang,Hongjian Yu,Jie Han
Niobates have emerged as promising candidates for environmental catalysis, particularly in the realm of piezocatalysis, owing to their distinctive layered architectures and robust physicochemical performance. In this study, we report the successful fabrication of A-site cation-tailored ABi 2 Nb 2 O 9 (A = Sr, Ca, and Ba) layered oxides via a molten salt strategy. Notably, the molten salt-synthesized SrBi 2 Nb 2 O 9 exhibits superior piezocatalytic performance in H 2 O 2 evolution with a yield reaching 1836.1 µmol g −1 h −1 , approximately 2.1 times higher than that of SrBi 2 Nb 2 O 9 prepared by the solid-state method. Furthermore, this material demonstrates exceptional piezocatalytic activity, degrading 98.0% of Rhodamine B within 75 min, with a reaction rate constant of 0.04966 min −1 . In addition, the catalyst shows durable stability, maintaining 97% of its original activity after four cycles. The influence of environmental factors, including solution pH and inorganic anions (Cl − and CO 3 2− ), was also systematically evaluated. This work elucidates that the synergistic integration of A-site cation engineering and molten salt synthesis effectively modulates the piezoelectric response of ABi 2 Nb 2 O 9 (A = Sr, Ca, and Ba), offering new insights and a viable pathway for the design of novel, high-performance piezocatalysts for environmental remediation. Graphical Molten salt-mediated A-site cation engineering of ABi 2 Nb 2 O 9 effectively modulates piezoelectric response, achieving superior piezocatalytic H 2 O 2 production and pollutant degradation. This work provides a viable pathway for designing high-performance piezocatalysts for environmental remediation.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Defan Wang,Yi Zhao,Xinxin Zhao,Chengfu Han,Kangkang Zhou,Yajie Zhang,Wei Zhai,Guoqiang Zheng,Jianwei Xu,Kun Dai,Chuntai Liu,Changyu Shen
PRPP integrates strain and humidity sensing functions on a single unified sensing platform. • Its distinctive porous structure endows PRPP with a broad strain range (0–80%) and low energy loss coefficient of 0.13. • PRPP shows excellent humidity-sensing performance and can serve for real-time human respiration monitoring. • The integration of humidity/pressure dual-mode PRPP sensor creates a broader platform for its application. Flexible pressure sensors with porous architectures have attracted extensive attention owing to their excellent stability and sensing performance, demonstrating great potential in applications such as electronic skin and healthcare monitoring. However, most existing sensors are often limited to single-modal signal transduction, and achieving synergistic multifunctionality within a unified signal platform remains a significant challenge. Humidity, as an essential environmental and physiological parameter, plays a vital role in enabling advanced interactive perception. Therefore, integrating high-performance humidity sensing with flexible pressure sensing has emerged as an important research direction. Herein, a polydimethylsiloxane (PDMS) composite foam (PRPP) modified with polypyrrole (PPy), reduced graphene oxide (rGO), and polydopamine (PDA) was fabricated through sequential in-situ polymerization combined with ultrasonication. The PRPP exhibits excellent mechanical resilience (1% plastic deformation after 500 compressions, 0.13 energy loss coefficient at 80% strain), rapid response/recovery time (80 ms/100 ms) and a low detection limit (0.1% strain). Benefiting from the in-situ growth of PPy, PRPP also shows remarkable humidity sensitivity, enabling real-time environmental monitoring. Furthermore, a dual-mode human-machine interface based on a PRPP array is developed for contact pressure sensing and non-contact humidity perception, providing a strategy for flexible sensors in intelligent interactive systems. A multifunctional flexible sensor is designed and fabricated. The flexible sensor simultaneously integrates strain sensing performance and humidity sensing performance within a unified platform via a rational functional integration strategy. The construction of multi-modal HMI interface realizes both contact and non-contact sensing. The integration of HMI interface and artificial intelligence algorithm provides excellent development prospects for the sensor in the fields of intelligent sensing, information transmission and human-computer interaction. Download: Download high-res image (139KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yu Su,Xiaofeng Wei,Yanjie Wang,Rui Xu,Lan Ding,Yanhua Chen,Daqian Song
The widespread accumulation of Congo red (CR) in industrial wastewater poses severe ecological and health risks due to its carcinogenicity and environmental persistence. Exploring the detection and adsorption strategy of CR is crucial for ensuring public health and protecting the environment. In this work, a magnetic composite named MMWCNTs@CDs@ZIF-8 was developed as a dual-functional sensing platform for precise quantitative detection and efficient adsorption of CR. MMWCNTs@CDs@ZIF-8 exhibited a linear range from 0.25 to 5 μM, and demonstrated low limit of detection (17.46 nM) and rapid response (4 min). Furthermore, it exhibited superior selectivity and anti-interference performance, making it suitable for environmental water samples analysis, with satisfactory recoveries and low relative standard deviations. The underlying detection mechanism was attributed to be internal filtration effect. Additionally, the adsorption performance of MMWCNTs@CDs@ZIF-8 was explored, and the maximum adsorption capacity was 131.84 mg g −1 , which demonstrated promising potential as an effective adsorbent for CR removal. Therefore, the proposal of MMWCNTs@CDs@ZIF-8) enables dual detection-decontamination functionality, providing innovative insights into constructing a versatile dual-functional sensing platform.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Wang Guancheng,Wei Xiaoli,Feng Kaizheng,Wu Yunfei,Dong Haijiao,Lu Mingze,Du Wei,Fang Qianglong,Ju Ming-Gang,Ma Jing-Yuan,Jiang Yali,Wu Haoan,Ma Ming,Zhang Yu
Prussian blue nanoparticles (PBNPs) have emerged as versatile nanozymes with reactive oxygen species (ROS)-scavenging capabilities, predominantly applied in antioxidant therapies. In this work, we present a combined theoretical and experimental study demonstrating that modulating Fe coordination environments can fundamentally reconfigure PBNPs’ catalytic properties, enabling ROS generation and pro-oxidative functionality. Ab initio molecular dynamics revealed different H 2 O 2 lysis mechanisms at Fe sites with varying coordination numbers: Low-coordinated center (FeN 4 ) induced hydrogen atom transfer to form Fe=O species, while high-coordinated FeN 5 generated ·OH radicals via H + -assisted homolysis under acidic conditions. Guided by calculations, Cs-doped PBNPs (Cs-PBs) with elevated coordination numbers were synthesized via alkali cation stoichiometric control, leveraging high distribution coefficient and low hydration energy of Cs + . Experimental results confirmed radical generation in Cs-PBs aligned with theoretical predictions. The size-optimized Cs-PBs demonstrated ultrahigh peroxidase-like activity (1182.26 U·mg -1 ) and outperformed ROS generating properties in both pollutant degradation and chemodynamic therapy. This work redefines PBNPs’ catalytic potential beyond conventional antioxidant roles, and lays the foundation for innovative environmental and therapeutic solutions.
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Nanoscale
·
2025
·
IF 5.1
Xin Zhao,Ling Niu,Yuchen Jin,Di Wu,Zheng Sun,Zhiqiang Su
Interfacial solar steam generation (ISSG) offers a sustainable and low-carbon pathway to mitigate global freshwater scarcity. However, the widespread adoption of conventional evaporators is limited by issues such as high cost, low efficiency, salt crystallization, and heavy metal contamination. To overcome these challenges, we developed a composite aerogel, denoted as CNF/PVA/PEI@polypyrrole (CPP). This material was fabricated by first constructing an aerogel substrate from cellulose nanofiber (CNF), polyvinyl alcohol (PVA), and polyethylenimine (PEI), followed by in-situ polymerization of polypyrrole. The resulting CPP aerogel possesses abundant hydrophilic groups, vertically aligned channels, and a hierarchical porous structure, endowing it with excellent compressibility, a high light absorption of 93.0%, and efficient photothermal conversion. Under 1 sun irradiation, the evaporator achieved a rate of 1.85 kg·m⁻²·h⁻¹. It also demonstrated remarkable salt resistance, maintaining a rate of 1.50 kg·m⁻²·h⁻¹ in 20 wt% high-salinity brine. Furthermore, the CPP aerogel effectively removed ions from seawater and purified wastewater contaminated with heavy metals and organic pollutants. This work provides a new strategy for designing high-performance solar evaporators with promising applications in desalination and complex wastewater remediation.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jialei Gao,Chengrui Li,Baiyang Sun,Ziqiang Liu,Zhengfeng Xie,Wei Shi
The preparation of functional polymers by directly using sulfur (S) as starting substrate under mild condition is an instructive guide for achieving effective downstream conversion of S. In this study, using S, polyethyleneimine (PEI), and terephthalaldehyde (TA) as starting materials, a type of thioamide-decorated PEI derivative (PEI-S-TA) was successfully prepared by water-mediated Willgerodt-Kindler (W-K) multicomponent reaction at room temperature. The chemical structure and basic properties of PEI-S-TA were characterized. The dual downstream applications of PEI-S-TA for iodine capture and Congo red (CR) dye adsorption were investigated based on the structural characteristic of PEI-S-TA (with N/S-containing polyamine skeleton and aromatic moieties). Experimental results showed that PEI-S-TA could effectively adsorb iodine in vapor (at 75 °C), cyclohexane and aqueous phases, with equilibrium adsorption capacities of ∼ 5930, 2385 and 1992 g −1 , respectively. In addition, PEI-S-TA demonstrated selective adsorption for the anionic dye CR, with a maximum adsorption capacity of ∼ 600.3 mg g −1 and satisfactory adsorption rate.
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DESALINATION
·
2025
·
IF 9.8
Bing Gao,Zhi Liu,Soon Huat Tan,Jianghui Zhao,Yingfeng Wang,Siew Chun Low
Harnessing solar energy for water vaporization offers a sustainable approach to address global freshwater scarcity. However, existing photothermal nanoweb systems often exhibit trade-offs between evaporation performance, contaminant removal, and resistance to microbial fouling, limiting their practical deployment. In this study, a multifunctional carbon nanoweb engineered via scalable electrospinning and carbonization demonstrates the simultaneous achievement of high solar-driven water evaporation, selective dye adsorption, and broad-spectrum antimicrobial activity. The nanoweb exhibits an outstanding methyl orange adsorption capacity of 1202.04 mg·g −1 , effectively localizing pollutants and maintaining stable vapor transport. Optimized photothermal conversion achieves a solar-to-vapor efficiency of 95.25 % with an evaporation rate of 1.58 kg·m −2 ·h −1 under one-sun irradiation, enabling clean water production of 10.18 kg·m −2 ·day −1 from dye-contaminated water (50 mg·L −1 ) under outdoor conditions. Performance remains stable over extended operation with actual wastewater. Under saline conditions, the system facilitates effective desalination, yielding ion-free condensate while sustaining evaporation rates comparable to deionized water. In parallel, embedded metallic nanoparticles impart potent antimicrobial functionality, achieving inhibition efficiencies of 98.38 % against Escherichia coli and 97.38 % against Staphylococcus aureus through synergistic oxidative and contact-based mechanisms. The integration of high-efficiency evaporation, selective pollutant removal, and microbial resistance into a single solar-responsive nanoweb represents a distinctive advancement in photothermal water treatment platforms, offering scalable and multifunctional solutions for decentralized, off-grid clean water production.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Chao Wang,Peijuan Chu,Tengfei He,Cheng Yi,Yue Yao,Lijia Liu,Chunhong Zhang
The application of membrane separation technology in wastewater treatment and pharmaceutical purification has attracted considerable attention. The development of a membrane with effective separation performance and antibacterial properties is of considerable interest for the separation and purification of antibiotics. Here, a thin-film composite (TFC) polyester membrane with effective antibiotic removal and antibacterial properties was fabricated via a facile one-step interfacial polymerization (IP) strategy. Naringenin (Nar), a natural product of flavonoid material derived from the pericarp, was utilized as the aqueous monomer. The suitable reactivity of Nar afforded the resulting membrane with a highly negative charged surface. The rejection performances for the antibiotics cephalothin, cefuroxime sodium, ceftriaxone sodium, and cefoperazone sodium were 96.3 %, 97.7 %, 99.2 %, and 99.8 %, respectively. The pure water permeance was 7.5 L m −2 h −1 bar −1 at a transmembrane pressure of 5 bar. The antibacterial efficacy was greater than 99.0 % against Escherichia coli and Staphylococcus aureus , attributable to the flavonoid structure of Nar. The present work proposed a feasible strategy to prepare TFC membranes with high nanofiltration performance and intrinsic antibacterial efficacy.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Chaowu Wang,Chuitao Kong,Haotian Tang,Mengwei Guo,Qibo Zhang
Hot-dip galvanizing slag, a zinc-rich industrial byproduct, presents both resource potential and environmental challenges in conventional hydrometallurgical recovery due to excessive acid consumption and limited selectivity. This study presents a novel ozone (O 3 )-assisted leaching and precipitation strategy for selective zinc recovery from hot-dip galvanizing slag. By leveraging the synergistic effects of O 3 oxidation and a choline chloride-ethylene glycol (ChCl-2EG) deep eutectic solvent (DES), the proposed method achieves efficient metal leaching (Zn: 99.6 %, Fe: 99.3 %, Al: 99.5 %) through controlled acidification. Subsequent water addition induces structural transformation of zinc complexes from [ZnCl 4 ]²⁻ to [ZnCl 4 (H 2 O) 2 ]²⁻, enabling phase separation. Precise pH control at 2.8 using oxalic acid results in selective zinc precipitation with 91.1 % efficiency while maintaining iron and aluminum in the solution. The residual solution undergoes distillation for water removal and recycling, demonstrating stable performance over five consecutive cycles. This closed-loop process eliminates excessive acid usage, reduces liquid waste by 85 %, and achieves 94 % reagent recovery efficiency, establishing an environmentally benign pathway for zinc resource reclamation.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Weixin Li,Jianxiong Guan,Tinglong Hao,Zhe Wang,Longjuan Yang,Chen Chen,Ruitong Zhi,Ruien Hou,Min Xu,Yu Tang,Fengjuan Chen
Solar-driven evaporation is a sustainable technology for freshwater production, yet its practical application is limited by (1) water vapor accumulation on the evaporator surface reduces sunlight absorption efficiency, (2) low clean water collection efficiency (<50 %), and (3) complex, non-portable designs. Herein, a collapsible and portable solar-driven evaporation–condensation (EC) system featuring cone array microstructures is developed to enable efficient directional backside evaporation and freshwater collection. The system incorporates a lightweight, retractable frame for enhanced portability, a hydrophilic nonwoven fabric for rapid water transport, and a CNTs/PDMS film with cone array microstructures to achieve high solar–thermal conversion and directional evaporation. Three sides of the system are equipped with pure PDMS films featuring cone arrays to facilitate efficient vapor condensation and water collection via the Laplace pressure gradient. Under 1 sun irradiation, the system demonstrates an impressive evaporation rate of 3.61 kg m −2 h −1 and a freshwater collection efficiency of ∼72 %, representing a 50 % improvement over traditional EC systems. A large-scale prototype produces 16.53 L m −2 day −1 of clean water, sufficient to meet the daily needs of 8 individuals. This portable, scalable, and low-cost EC system offers a practical and sustainable solution for freshwater recycling in outdoor or rural areas, addressing global water scarcity with minimal environmental impact.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Huacun Li,Mingbo Xie,Zhenghao Wang,Jinkang Liu,Jun Xie,Xu Yan,Qingwei Wang,Meiqing Shi,Liyuan Chai,Liyuan Zhang
Graphene oxide membranes hold promising application potential in molecular nanofiltration, but the traditional selectivity-permeability trade-off is still a challenge. Here, an interfacial redox reaction strategy based on poly(m-phenylenediamine)-graphene oxide (PmPD-GO) interaction was successfully designed to achieve the fabrication of an ultrathin graphene oxide membrane (∼28 nm) with a reasonable reduction state (C/O ratio of 11.2) and adequate interlayer spacing stabilized at 8 ± 0.5 Å, which supplies not only a favorable microenvironment for fast water transport but also a suitable interlayer distance for molecules gating. The resultant membrane exhibits a high permeance of 72 LMH/bar and an exceptional dye rejection rate exceeding 98%. Moreover, the gentle gradient-reduced graphene oxide membrane has significantly improved stability under long-term immersion, pH tolerance, and ultrasonic treatment tests. This research provided a simple and effective strategy for fabricating two-dimensional lamellar membranes with promising prospects for practical nanofiltration applications.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jiao Guo,Fuwei Yang,Yakun Zhang,Yuqing Chen,Wei Zhang,Aimin Chen,Yuheng Qin,Pengfei Liu
In this study, a hierarchical activator (De@NiCo-LDH nanocomposite) was successfully fabricated through in-situ growth of nickel–cobalt layered double hydroxide (NiCo-LDH) nanosheets on diatomaceous earth (De) substrates. The material’s structural and chemical properties were systematically characterized using SEM, XRD, FTIR, XPS, and BET analyses. The optimized De@NiCo-LDH/PMS system demonstrated exceptional catalytic performance, achieving 96.6 % ofloxacin (OFL) degradation efficiency via peroxymonosulfate (PMS) activation. Mechanism investigations, including radical quenching experiments and electron paramagnetic resonance (EPR) analysis, identified singlet oxygen ( 1 O 2 ) as the predominant reactive species governing OFL degradation. Critical to the activation mechanism were the synergistic redox cycles of surface-bound Ni 2+ /Ni 3+ and Co 2+ /Co 3+ couples, which facilitated continuous electron transfer for PMS activation. Furthermore, the catalyst exhibited robust reusability (>85 % efficiency retention after 3 cycles), multi-pollutant versatility, and remarkable environmental compatibility, as evidenced by the low ecotoxicity of treated effluents in phytotoxicity assays. These findings underscore the potential of De@NiCo-LDH as a sustainable and high-efficiency heterogeneous catalyst for advanced oxidation processes in antibiotic-contaminated water remediation.
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