ACS Applied Nano Materials
·
2026
·
IF 5.8
Rujin Zhao,Ze Qiao,Bufan Li,Hongyi Yin,Zhixuan Shao,Xinqi Zhao,Fengxiang Ai,Ming Li,Nuanfei Zhu,Zhen Zhang,Hongjun Zhao,Yanqiu Jiang
Small-sized platinum nanoparticles (Pt NPs) exhibit high peroxidase-like activity but suffer from self-agglomeration and poor stability. To solve this problem, using porous aminophenol formaldehyde resin (APF) microspheres as a support, a sulfhydryl-functional Pt NPs-based hybrid nanozyme (APF@Pt NPs) with excellent peroxidase-like activity was designed by anchoring Pt NPs on the surface of APF. High specific surface area and abundant active groups of APF microspheres facilitate the uniform distribution of Pt NPs. This design not only enhances the dispersibility of Pt NPs to prevent aggregation but also exposes more active sites─key factors that contribute to the improved catalytic performance of APF@Pt NPs. Using APF@Pt NPs as a recognition element, a sensitive colorimetric method was developed for mercury ion (Hg2+) detection through specific inhibition of Hg2+ on the peroxidase activity of APF@Pt NPs. This sensor exhibited good linearity (R2 = 0.952) in the range of 0–3.125 μM. The limit of detection (LOD) was as low as 0.096 μM, along with satisfactory recoveries of 98–115% and relative standard deviation (RSD) < 3.75% in real water. Integrated with a hydrogel-sensor and smartphone APP, a real-time and visual intelligent sensing platform enabled a rapid qualitative and quantitative analysis of Hg2+ by RGB analysis in environmental samples. These findings illustrate that the application of APF@Pt NPs provides an effective support-engineered strategy to enhance and regulate the peroxidase-like activity and stability of small-sized Pt NPs. This also presents a multifunctional sensing platform for on-site and real-time monitoring of heavy metals in complex environmental samples.
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ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Yicheng Wang,Chenglong Chen,Ru Cheng,Tingting Xiang,Ruibo Wang,Fuzhan Song,Sanjay Mathur,Juan Yang
Aqueous zinc-ion batteries (AZIBs) have attracted considerable interest as viable substitutes for lithium-ion batteries. To meet the demand for customizable and geometrically complex electronics, zinc powder-based anodes are increasingly replacing conventional zinc foil anodes. However, zinc powder-based anodes face critical challenges in practical deployment, including accelerated corrosion and exacerbated dendrite formation compared to zinc foil anodes. This work presents a 3D-printed, high-safety zinc powder-based anode with a poly(ethylene glycol) (PEG)-coated layer. The 3D anode can trap dendrites and enhance battery energy density. The PEG coating not only suppresses the hydrogen evolution reaction (HER) but also regulates Zn2+ deposition/stripping through uniform electric field distribution. The 3D Zn@PEG anode demonstrates an outstanding deposition/stripping capability, high-rate performance, and prolonged cycling stability. This strategy provides a scalable and cost-effective approach to developing dendrite-resistant zinc-ion batteries. Moreover, this method holds great potential for industrial-scale electrode production.
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JOURNAL OF PHYSICAL CHEMISTRY B
·
2026
·
IF 3.2
Zheng Li,Mengrong Hu,Siyu Hou,Shufang Gao,Ziyi Wang,Jian Luo
Deprotonated flavonoids typically undergo efficient nonradiative relaxation in solution, rendering them nonemissive. In this study, we successfully activate the fluorescence of such anions by embedding five representative flavonoids─galangin, apigenin, luteolin, kaempferol, and quercetin─into DMSO-doped poly(vinyl alcohol) (PVA/DMSO) films. The unique microenvironment of the composite film provides dual functionalities: intrinsic microbasicity facilitates flavonoid deprotonation, while spatial constraints effectively suppress the nonradiative decay pathways. Consequently, strong visible-light emission is observed for all flavonoids except galangin upon excitation at 440 nm. Time-dependent density functional theory calculations were employed to model the emission energies of various anionic species. By correlating the calculated trends with experimental spectra, we identify the emissive species as anions deprotonated specifically at the C4′–OH position, rationalizing the absence of emission from galangin, which lacks this moiety. This work not only demonstrates a general strategy to unlock the fluorescence of nonemissive anionic chromophores through synergistic matrix control but also establishes PVA/DMSO films as a versatile platform for modulating the photophysics of charged organic molecules.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Ya-Qi Xue,Lei Wang,Yin Wang,Xiao Liu,Bin Lei,Xi-Ze Liu,Bo Li,Qian Yang,Jin Chang,Wei-Wei Ding,Jian-Gong Ma,Peng Cheng
Platinum-based hydrosilylation catalysts are primarily applied in the curing of silicone rubber. However, the commercial Karstedt catalysts used in industrial applications seriously suffer from rapid oxidation in air, uncontrolled activity at room temperature, rigorous storage conditions yet short pot-life, poor thermal stability, and complicated operation packages. Herein, Pt@MOFs, constructed by immobilizing catalytically active sites Pt inside the pores of a metastable MOF-based host with selected decomposition temperature, acts as a “controlled-release MOF-based capsule” to keep a long pot-life during storage and transport at ambient conditions, control the curing temperature of hydrosilylation, and releases the catalytically active Pt sites at required temperature for in situ polymer formation. Additionally, the unique nanosized crystalline MOF carriers are dominant for uniform dispersion in polysiloxanes and guarantee the excellent oxidation resistance in the Pt@MOFs catalytic system, which provides a new generation catalyst for widely used silicone rubber packages and an innovative pathway for the application of metastable MOF materials. Honeywell® has initiated kilogram-scale silicon rubber packages with Pt@MOFs.
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ACS Applied Nano Materials
·
2026
·
IF 5.5
Lixia Li,Paihao Yan,Dongxu Zhang,Tao Feng,Quan Yuan,Yanhong Liu,Hailong Liu,Baodong Mao
The electrocatalytic nitrate reduction reaction (NO3RR) has emerged as a promising strategy for ammonia (NH3) synthesis under ambient conditions. However, the sluggish anodic oxygen evolution reaction (OER) not only significantly restricts the overall efficiency of the NO3RR process, but also inevitably wastes electrical energy. In this study, we synthesized a series of CuCo layered double hydroxide (LDH) nanosheets by adjusting the Cu/Co ratio, which demonstrate enhanced electrocatalytic activity for the NO3RR at the cathode and organic pollution degradation at the anode. Specifically, Cu2Co1-LDH nanosheets exhibit an exceptional NH3 yield of 0.32 mmol h–1 cm–2 and a high Faradaic efficiency (FE) of 82.24% at −1.0 V vs reversible hydrogen electrode (RHE). Meanwhile, the optimized Cu4Co1-LDH nanosheets achieve highly efficient 2,4-dichlorophenol (2,4-DCP) oxidation reaction (DOR) at 1.9 V vs RHE, which is 1.5 times higher than that of the Cu1Co1-LDH. Ultimately, the Cu2Co1-LDH cathode and Cu4Co1-LDH anode were coupled to form an asymmetric NO3RR||DOR bifunctional system that maintains a high NH3 yield and 2,4-DCP degradation at a current density of 10 mA cm–2 under a cell voltage of 1.89 V, 230 mV lower than that of the NO3RR||OER arrangement. A series of electrochemical tests reveal that the excellent electrocatalytic performance of the CuCo-LDH nanosheets stems from the bimetallic synergy and layered nanostructure, which effectively inhibit the competing reactions and enhance the charge-transfer efficiency. This study demonstrates an effective design for bifunctional nanocatalysts to address the kinetic sluggishness in the NO3RR and a strategy for asymmetric coupling with the degradation of organic pollutants.
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ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Zining Mei,Yuanxiong Xian,Haoyu Zhang,Qinglin Deng,Gaorui Mai,Lingmin Yao,Mai Li
Disordered dendritic growth and numerous side reactions have long plagued researchers, severely reducing the cycling stability of aqueous zinc-ion batteries (AZIBs) and posing a key barrier to commercialization. To address this, l-theanine was used in this work as a natural and effective electrolyte additive. Its zincophilic groups adsorb on the zinc anode, guiding Zn2+ to deposit uniformly along the (002) crystal plane and effectively suppressing side reactions like hydrogen evolution reaction and corrosion, thereby significantly enhancing battery cycling stability. Results show that with l-theanine as an electrolyte additive, Zn//Zn symmetric cell stably cycled for 1093 h at 5 mA cm–2 and 5 mA h cm–2, about 14.4 times longer than that without the additive. Zn//Cu half-cell also retained an average Coulombic efficiency of 97.6% over 267 cycles. Furthermore, Zn//V2O5 full cells demonstrate remarkable cycling stability over 4000 cycles at 2 A g–1 and maintain excellent capacity retention across a wide temperature range from 20 to 60 °C. These findings offer a feasible and effective strategy for developing electrolyte additives for AZIBs.
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Tongxin Qu,Yongchun Zhao,Zhuo Xiong,Junying Zhang
Electrocatalytic CO2 reduction reaction (eCO2RR) offers a sustainable route for converting CO2 into value-added chemicals, contributing to carbon neutrality. While high selectivity toward C1 products has been achieved, the efficient production of multicarbon (C2+) compounds remains challenging due to the high energy barriers of C–C coupling. Copper-based catalysts are promising for C2+ generation owing to their unique *CO binding energy, yet they suffer from low selectivity and stability. Alloying copper (Cu) with other metals is an effective strategy for regulating intermediate adsorption and facilitating C–C coupling. In this study, an efficient CuGa solid solution alloy electrocatalyst for the eCO2RR was synthesized, employing only straightforward immersion drying and subsequent reduction annealing processes. At an applied potential of −1.19 V vs RHE, this catalyst exhibited a high Faradaic efficiency of 66.27% for C2+ products, significantly suppressing C1 pathways. It also demonstrated remarkable stability, maintaining structural and morphological integrity even after 12 h of electrolysis at a current density of 300 mA/cm2. Density functional theory calculation integrated with in situ characterization revealed that synergistic interaction between Cu and Ga enhances the adsorption of key intermediates (*COOH and *CO) and reduces the energy barrier of *CO dimerization. This work provides insights into the design of efficient and stable Cu-based electrocatalysts for C2+ production via an electrochemical method.
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LANGMUIR
·
2026
·
IF 4.4
Xinhua He,Zijie Xia,Linlin Wang,Tianchen Shen,Wenqi Tan,Jianmin Shen,Linying Yuan,Zheng Jiao
The ubiquitous accumulation of antibiotics and synthetic dyes in aquatic environments has emerged as a critical threat to the ecological integrity and human health. Visible-light-driven photocatalysis represents a sustainable strategy for decontaminating such pollutants; yet, its practical efficacy is often hampered by narrow light-harvesting ranges and rapid photogenerated carrier recombination. Herein, a ternary photocatalyst, namely, CDs/UiO-66-NH2/BiOCl (CUCl), was rationally constructed by integrating carbon dots (CDs) into a UiO-66-NH2/BiOCl Z-scheme heterojunction. Serving as an efficient electron reservoir, the introduced CDs not only significantly extended the visible-light absorption range but also effectively suppressed carrier recombination. Under visible-light irradiation, the optimized CUCl catalyst achieved remarkable degradation efficiencies of 87.2% and 98.8% for tetracycline and rhodamine B, respectively, outperforming the binary UiO-66-NH2/BiOCl heterojunction and pristine BiOCl. Radical trapping experiments and photocatalytic mechanism investigations revealed that photogenerated holes (h+) and superoxide radicals (·O2–) were the dominant active species responsible for pollutant degradation. Moreover, the CUCl catalyst exhibited excellent structural stability and reusability, retaining more than 85% of its initial catalytic activity after four consecutive reuse cycles. This work provides a novel and viable strategy for fabricating high-efficiency, stable environmental photocatalysts via the synergistic integration of Z-scheme heterojunctions and carbon dot functionalization.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yidi Wu,Weiliang Zhou,Zhiyi Chen,Ji Li,Tao Shao,Niannian Wang,Bilu Liu,Yan-Bing He,Feiyu Kang,Lele Peng
Pulsed electrolysis is widely regarded as a promising strategy for enhancing the performance of the electrocatalytic nitrate reduction reaction (NO3–RR). However, research on the effect of symmetric and asymmetric pulsed electrolysis on the NO3–RR remains elusive. Here, the CuMn alloy serves as a model catalyst to systematically investigate the impact of symmetric and asymmetric pulsed electrolysis on the performance of NO3–RR. A series of operando measurements and control experiments indicate that a suitable asymmetric pulsed electrolysis can optimize the local microenvironment of the NO3–RR, including optimizing the coverage of NO3–, enhancing the generation of key N-containing intermediates, and inhibiting the hydrogen evolution reaction, thereby improving the Faradaic efficiency and yield rate of NH3. Consequently, the Faradaic efficiency and yield rate of NH3 for the optimal asymmetric pulsed electrolysis between a less negative potential time of 2 s and a more negative potential time of 4 s are 94.03% and 9.13 mg h–1 cm–2, respectively, which are 1.42-fold and 2.10-fold higher than those of static electrolysis. Moreover, the Faradaic efficiency of NH3 for the optimal asymmetric pulsed electrolysis was 66.32% at a lower concentration of NO3– (2000 ppm), which is 1.73-fold higher than that of static electrolysis, indicating that the performance of asymmetric pulsed electrolysis is further enhanced in the lower concentration of NO3–, further confirming that asymmetric pulsed electrolysis is a feasible strategy to improve the performance of the NO3–RR.
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Polymers
·
2026
·Vol. 18
·期 3
·
IF 4.9
Zijun Zhang,Qi Zhang,Qimeng Jiang,Hao Ma
Sponge-based preservative packaging is an emerging approach to mitigate mechanical damage to fruits and vegetables during transportation, storage, and retail. However, conventional polyurethane sponges generally lack durable antibacterial activity and are neither biodegradable nor readily recyclable. Herein, to address these limitations, silver nanoparticles immobilized on TEMPO-oxidized cellulose nanofibers (TCNF@AgNPs) were incorporated into a quaternized chitin matrix to construct a synergistic antibacterial composite sponge (QCH/TCNF@AgNPs) for fruit preservation. The composite sponge exhibited strong antibacterial efficacy againstEscherichia coliandStaphylococcus aureus, together with a low cumulative release of silver species of 2.49% after 336 h. In addition, the sponge showed >50% mass loss after 36 days in lysozyme solution, indicating good enzymatic degradability. Cytocompatibility assays further confirmed favorable biocompatibility and biosafety. Notably, the composite sponge provided satisfactory preservation performance for fresh strawberries. Overall, this work demonstrates the potential of QCH/TCNF@AgNPs as a biodegradable antibacterial packaging sponge for fruit preservation.
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SENSORS
·
2026
·Vol. 26
·期 3
·976
·
IF 4
Anran Ma,Tao Wang,Zhilin Zhao,Yi Liu,Maoping Xu,Shengxiang Gao,Rui Zhu,Jiamin Wu,Chuang Hou,Guoan Tai
Humidity sensing is essential in medical fields such as respiratory support, neonatal care, sterilization, and pharmaceutical storage. However, current sensors face limitations, including slow response/recovery, low sensitivity, and poor long-term stability. To address these challenges, we developed borophene-multiwalled carbon nanotube (MWCNT) heterostructures using a stepwise in situ thermal decomposition method. The resulting humidity sensor exhibits an ultrabroad detection range (11–97% RH), ultra-high sensitivity (55,000% at 97% RH), and fast response/recovery times (10.04 s/4.8 s). Through interfacial charge-transfer engineering, the system facilitates rapid electron migration, enhances Schottky barrier modulation, and provides abundant active adsorption sites for water molecules, thereby achieving comprehensive improvement in sensing performance. It also demonstrates excellent selectivity, mechanical flexibility, and operational stability. Notably, the sensor’s sensitivity at 97% RH surpasses that of sensors based on pure borophene or MWCNT by 37–462 times, highlighting the advantages of heterostructure engineering. The multifunctionality of the device suggests its potential in areas beyond conventional sensing, including non-contact voice recognition, skin humidity mapping, and real-time breath monitoring. These results lay a solid foundation for developing borophene-MWCNT heterostructures into a high-performance platform for next-generation medical diagnostics and intelligent health monitoring.
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MOLECULES
·
2026
·Vol. 31
·期 3
·568
·
IF 5.1
Long Lu,Hongbin Wang,Junfeng Zhao,Mei Zhang,Xuying Zheng,Dapeng Luo,Yongliang Sun,Jinyan Yang
Bamboo powder waste generated from bamboo processing serves as an ideal feedstock for biochar (BC). This study employed potassium hydroxide (KOH) to modify biochar derived from bamboo powder waste, activating it at different temperatures (700 °C, 800 °C, and 900 °C) to yield samples designated KBC-700, KBC-800, and KBC-900, respectively. The physicochemical properties and pore structures of the modified biochar were characterized using SEM, specific surface area and pore size analysis, FT-IR, Raman spectroscopy, XRD, and zeta potential measurements. The adsorption performance of the modified biochar toward PFOA was investigated using kinetic and thermodynamic models, examining the effects of the solution pH, adsorbent dosage, and temperature. Results indicate that KBC-900 exhibits a significantly enhanced specific surface area (up to 2924.7 m2g−1), reduced surface oxygen-containing functional groups, increased carbon skeleton aromatization, and expanded mesoporous channels. Under initial conditions of pH = 3 and reaction temperature of 298 K, KBC-900 achieved a PFOA adsorption capacity of 366.7 mg g−1with a removal efficiency of 91.67%. The adsorption process conformed to pseudo-first-order and pseudo-second-order kinetic models as well as the Freundlich model. The adsorption equilibrium was reached within 12 h, indicating multi-layer adsorption dominated by chemisorption on a heterogeneous surface. Thermodynamic parameters indicate the adsorption reaction is an exothermic process. After five cycles of regeneration, KBC-900 maintained a removal efficiency of 75.69%. This study provides an efficient and reliable solution for removing PFOA from water.
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