JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yang Yang,Jiaxin Li,Xiaoyao Guo,Fangye Wu,Jiayu Zhang,Peng Lu
The reliance of conventional carbon dioxide (CO₂) sensors on external power limits their application scope. Self-powered triboelectric nanogenerators offer a promising alternative, yet the development of high-performance triboelectric sensing materials remains a key challenge. This study presents an ingenious design using microgels from polyethyleneimine (PEI)-crosslinked nanocellulose as dual-functional building blocks to fabricate a mechanically robust and CO 2 -sensitive triboelectric foam. The microgels (optimized with 25,000 Da PEI) formed an optimal pore-forming template, facilitating the efficient and uniform distribution of PEI. The resulting cellulose foam achieves an excellent combination of high porosity (85.6%), low density and compressive toughness (1.37 MJ m −3 ), while functioning dually as the triboelectric layer and the CO 2 sensing material. The optimized TENG-based sensor enables sensitive CO₂ responsiveness, exhibiting a good linear relationship (R 2 = 0.99) within 750–2500 ppm, and maintaining robust signal output. This study provides a novel strategy for developing CO 2 -sensitive materials and significantly advances the application of triboelectric CO₂ sensors in air quality monitoring.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Shibing Ren,Xinge Ma,Liang Chu,Rui Wang,Min Li,Mu Yang,Ge Wang
The dynamic ionic bonds effectively address the leakage issue of phase change materials through the reversible breaking and reformation of chemical bonds, offering an efficient and green preparation method. In this study, we successfully fabricated MXene-CNFs-PEG composite PCMs using an ultrasonic-assisted and ion-crosslinking method. This strategy leverages the strong intermolecular hydrogen bonding between one-dimensional cellulose nanofibers (CNFs) and two-dimensional Ti 3 C 2 T x (MXene) nanosheets, combined with metal ion crosslinking, to form a continuous three-dimensional network that effectively anchors organic phase change materials. It significantly reduces MXene agglomeration, delays oxidation and enhances the overall structural integrity. The non-rigid network structure imparts outstanding plasticity in the solid state, making the composite an ideal precursor for 3D printing and enabling the precise construction of complex architectures. MXene confers superior photothermal conversion efficiency, enabling integrated conversion of “photo-thermal-electric” energy conversion, successfully driving common electronic device. The composite PCMs have significant application value in fields such as 3D printing and multilevel energy conversion system.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Gou Hanwen,Bao Zhiming,Zhang Xianzhong,Jing Lishuai,Pan Yuelei
The use of environment friendly and sustainable biobased
materials
to synthesize high-performance silicon carbide (SiC) aerogel electromagnetic
wave-absorbing (EMW) materials is an important trend, which helps
to promote their development and application. However, due to the
inherent pore structure of biobased templates, the structural design
of SiC aerogels is limited. Here, a salt-induced sol–gel strategy
is proposed to fabricate high-performance SiC aerogels by crushing
the biobased material and then cleverly using the DLVO colloid stability
theory to restructure the biobased template. This strategy gets rid
of the shackles of the inherent pore structure of biobased materials
and designs aerogels composed of oriented SiC nanowire bundles. Benefiting
from the unique structure, the obtained aerogel has a porosity of
∼98%, while enhancing the multiple reflection absorption effect
of the aerogel on EMWs (effective absorption bandwidth = 4.2 GHz)
and extending the thermal performance of the aerogel transmission
path (thermal conductivity reduced to 0.019 W·m –1 ·K –1 ). The salt-induced sol–gel strategy
paves the way for the structural design of high-performance ceramic
aerogel electromagnetic absorbers.
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Acta Biomaterialia
·
2025
·
IF 9.6
Bing Wu,Ye Yang,Xiancheng Huang,Yuanchao Shi,Chongzhou Fang,Fei Liu,Yang-Chi-Dung Lin,Jiaxin Wang,Jianjing Lin,Jing Mu,Xintao Zhang
Osteoarthritis (OA) is a progressive degenerative joint disease characterized by synovial inflammation and cartilage degradation, and its progression is closely related to excessive production of reactive oxygen species (ROS) and upregulation of catabolic enzymes such as matrix metalloproteinases. Here, we developed a self-assembled multifunctional polymeric nanoparticle (NP) system for the co-delivery the ROS scavenger 2,2,6,6-Tetramethylpiperidoxyl (TEMPO) and small interfering RNA (siRNA) against MMP-13 (siMMP-13). The nanoplatform is constructed from antioxidant TEMPO-PEG-PLGA and cationic PEG-PLGA-OA9 to enable efficient siRNA encapsulation and intra-articular delivery. TEMPO mimics superoxide dismutase to neutralize ROS, while siMMP-13 silences catabolic gene expression to suppress cartilage degradation. This redox- and gene-regulatory NP system demonstrated potent anti-inflammatory and cartilage-protective effects in vitro and in vivo , effectively attenuating cartilage damage and inflammation in Osteoarthritis. This work presents a promising and translational approach to Osteoarthritis treatment via integrated redox and gene regulation strategies. Statement of Significance Osteoarthritis (OA) remains a major clinical challenge due to its complex and multifactorial pathogenesis, which current palliative therapies fail to adequately address. This study presents a novel, multifunctional therapeutic strategy that concurrently targets two critical pathological features of OA—oxidative stress and extracellular matrix degradation—through the co-delivery of a reactive oxygen species (ROS) scavenger (TEMPO) and MMP-13–targeting siRNA via a self-assembled polymeric nanoparticle system. By integrating redox modulation and gene silencing within a single nanoplatform, this approach enables precise regulation of inflammatory and catabolic pathways, thereby enhancing therapeutic efficacy and cartilage preservation. The findings offer a promising foundation for the development of next-generation disease-modifying OA therapies with strong potential for clinical translation.
研究领域:
纳米医学
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骨科
·
基因治疗
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活性氧生物学
·
药物递送系统
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Nature Communications
·
2025
·Vol. 16
·期 1
·10501
·
IF 15.7
Zhu Qiong,Su Jingjing,Lin Guoan,Li Guisheng,Zhuo Zhiwen,Wang Weiyi,Li Jialin,Xu Xiaoxiang
Photocatalytic oxygen reduction reaction (ORR) represents a green and cost-effective means to produce the high-value industrial compound H 2 O 2 . However, the efficient H 2 O 2 synthesis awaits in-depth knowledge of the ORR mechanisms for the design of highly active photocatalysts. In this work, surface indium vacancies (denote hereafter as V In ) have been introduced into In 2 S 3 , which significantly boosts the photocatalytic activity for H 2 O 2 production, with an optimal H 2 O 2 generation rate of 4.77 ± 0.05 mmol·h −1 ·g cat. −1 under visible light illumination (λ ≥ 420 nm) and an apparent quantum efficiency (AQE) of 7.49 ± 0.01% at 420 ± 20 nm. Mechanistic analysis reveals the multifunctionality of V In , such as enlarging the chemisorption capacity of O 2 , enriching photo-generated electrons for ORR, endorsing high reducing power to photo-generated electrons, and promoting H 2 O 2 desorption. These findings justify that surface cation vacancies open up new possibilities for H 2 O 2 photosynthesis by leveraging their reaction dimensions in ORR.
研究领域:
材料科学
·
光催化
·
环境化学
·
能量转换
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BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Zebing Xiao,Yutong Xiong,Yonghua Zhang,Xiaoyun Li,Yixiang Wang,Xiaoying Wang
Bamboo pulp fines (BPF) are defined as bamboo pulp waste. BPF, including fine fibers and abundant non-fibrous cells, are detrimental to the performance of paper and are usually regarded as waste and discarded. In this work, inspired by the loose structure of non-fibrous cell walls in bamboo, a mild method for converting BPF into CNFs was developed. By leveraging the loose structure of BPF, high-density surface carboxyl groups were introduced via low-toxic (relatively less hazardous than nitro-based oxidants) maleic anhydride (MAH) esterification reactions, significantly enhancing dispersibility and interfacial compatibility. Combined with gentle mechanical disintegration, successfully resulting in CNFs (M−CNFs) with a diameter of approximately 2.6 nm, an aspect ratio exceeding 1000, a carboxyl content of 1.45 mmol/g, and a yield of approximately 98%. Furthermore, M−CNF−based nanofilms exhibited exceptional mechanical properties, achieving 107 MPa tensile strength with unique stress-dispersion mechanisms. The resulting M−CNFs serve as sustainable building blocks for multidimensional advanced cellulose materials and emulsion stabilizers. This method-produced M−CNFs offer advantages including ultrahigh aspect ratios, colloidal stability, high yield, and significant application potential, establishing a high-value valorization route for bamboo pulp waste.
研究领域:
材料科学
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纳米技术
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可持续化学
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生物高分子工程
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废弃物高值化利用
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Nan Li,Le Yang,Xingxiang Ji,Wei Chen
Flexible piezoresistive sensors are crucial for wearable electronics. Conventional approaches predominantly enhance sensitivity and detection range through innovations in conductive materials, sensor substrates, or sophisticated microstructure engineering. This study presents a novel approach using commercial band-aid as multifunctional piezoresistive sensor substrates, utilizing their inherent structural properties. This substrate is functionalized through immersion into a multi-walled carbon nanotubes (MWCNT) and cellulose nanofibers (CNFs) composite dispersion, forming a nanoscale conductive film while preserves the native microscale patterns. These patterns amplify localized pressure responses, thereby enhancing sensitivity. Simultaneously, the conductive band-aid is assembled into a millimeter-scale arched architecture that optimizes the sensitivity-range trade off: under low stress, the minimal initial contact area optimizes sensitivity, while the arch design stabilizes large deformations, extending the measurable pressure range. This cross-scale integration synergizes stress redistribution and dynamic conductive pathway adjustments, enhancing contact area homogeneity under pressure. The resultant sensor demonstrates exceptional performance including high sensitivity (66.8 kPa −1 ), broad detection range (0–219.2 kPa), rapid response/recovery times (1 ms/4 ms), exceptional durability (10,000 cycles), and ultra-low detection limit (7 Pa). Moreover, the methodology addresses scalability and cost barriers by utilizing mass-produced, biocompatible band-aids as off-the-shelf substrates, bypassing complex and costly nanofabrication processes. By harmonizing material accessibility, structural ingenuity, and multi-functional sensing performance, this approach not only resolves enduring trade-offs between sensitivity, range, and durability in wearable sensor design but also establishes a scalable platform for next-generation epidermal electronics.
研究领域:
材料科学
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柔性电子学
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可穿戴传感器
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纳米复合材料
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生物医学工程
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Yuanying Chen,Tianran Lin,Shuangshuang He,Qi Jiao,Shulin Zhao,Li Hou
Malathion plays an important role in agricultural production, and the accurate detection of malathion residues is essential to ensure food safety. A novel enzyme-free sensing method was proposed by employing bimetallic magnetic nanozymes for both colorimetric quantification and multicolor semi-quantitative detection of malathion. The nanozyme exhibits peroxidase-like activity, catalyzing H 2 O 2 -mediated oxidation of 3,3′,5,5′-Tetramethylbenzidine dihydrochloride (TMB). Malathion inhibits this activity via Zr O P coordination, reducing oxidized TMB (oxTMB) generation. Under acidic conditions, oxTMB is further converted to TMB 2+ , which etches gold nanorods, inducing aspect-ratio variations accompanied by distinct multicolor changes. This method demonstrates low detection limits of 0.68 ng/mL. It does not require biological enzymes and can semi-quantify the malathion concentration through color changes. Thus, it can achieve convenient and accurate quantitative analysis without instruments, meeting on-site detection requirements. This work contributes to food safety and the development of efficient and reliable methods for malathion detection.
研究领域:
分析化学
·
纳米技术
·
食品安全
·
环境监测
·
传感器与生物传感器
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JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
·
2025
·
IF 3.7
Kaiqiang Liu,Wenli Tang,Lieqiang Luo,Guihai Li,Haiping Wang,Xingguo Zhang
In this study, cellulose nanofibres (CNFs) with different structures were prepared using ball-milling and 2,2,6,6-tetramethylpiperidine-1-oxyl-mediated (TEMPO) oxidation. Then, microcalorimeter, scanning electron microscope, electrical conductivity, and micro-CT were used to investigate the interaction mechanisms between the CNFs and cement slurry. The results showed that the combination of ball-milling and TEMPO oxidation produced CNFs with carboxyl functional groups. When the NaClO concentration was 2 mmol/g and oxidation time was 2 h, the carboxyl content on the surface of the nanofibres was 0.0856 mmol/g. Based on the hydration rate and electrical conductivity results, the carboxylated CNFs reduced the hydration rate of the cement slurry and delayed the exothermic peak by 0.5–2.3 h. The decrease rate of the electrical conductivity of the cement slurry during transition stage increased from 2.805 to 3.543–5.142 mS/(cm·h). The electrical conductivity of the solid–liquid two-phase cement slurry was mainly provided by the pore solution. The decrease in the electrical conductivity of the cement slurry during the transition stage could mainly be attributed to the formation of hydration products that changed the microstructure of the cement slurry from ‘dispersed particles’ to a ‘gel grid’ during the hydration acceleration stage, the porosity and pore connectivity of cement slurry are reduced. The zeta potential results indicate that CNF in the cement slurry provides a location for the nucleation and growth of early hydration products through adsorption and bridging effects, changes the microstructure of the cement slurry, and accelerates the transition from liquid to solid state.
研究领域:
材料科学
·
土木工程
·
纳米材料
·
水泥基材料
·
建筑材料
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2025
·Vol. 122
·期 42
·e2508673122
·
IF 9.1
Guanghui Yuan,Jixuan Wang,Yingchang Cao,Zihao Jin,Fang Hao,Keyu Liu,Yang Li,Hans-Martin Schulz,Jon Gluyas,Richard N. Zare
Sedimentary basins host high-grade gold mineralization at intersections of auriferous hydrothermal fluids and hydrocarbons. However, the precise mechanism of native gold formation associated with organic matter remains poorly understood. Here, we investigate gold precipitation at oil–water interfaces through in situ thermal experiments using various combinations of oil and HAuCl4-bearing solutions. Our results reveal that gold particles form spontaneously following the extensive generation and evolution of water microdroplets at oil–water interfaces at temperatures of 140 to 400 °C. We propose that electrons (e−), released from the conversion of hydroxide ions (OH−) to hydroxyl radicals (·OH) in water microdroplets, together with H atoms (·H) formed through electron transfer involving H3O+, and spontaneously generated H2O2 from·OH recombination, drive the reduction of Au3+ to Au0. The atomic gold progressively aggregates into Au0 clusters and Au nanoparticles (AuNPs), ultimately forming micrometer-scale gold particles and wires. This precipitation process occurs within minutes at temperatures above 350 °C and within hours below 200 °C. The experimentally produced gold particles exhibit textures like those in natural ore deposits. This interfacial microdroplet–induced mechanism provides a unique perspective on native gold formation in hydrocarbon-rich geosystems. Beyond its geological significance, this mechanism offers a potentially simplified approach for gold recovery from electronic waste without the need to introduce complex adsorbents or reducing agents into the waste stream.
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ACS Environmental Au
·
2025
·
IF 7.7
He Tang,Xihe Yang,Fengjian Chu,Shiwen Zhou,Wangyu Li,Yongqi Li,Haiyan Zhang,Zechen Yu,Hongru Feng,Yuanjiang Pan
Dimethyl sulfide (CH3SCH3), methanethiol (CH3SH), and dimethyl disulfide (CH3SSCH3) are the most predominant marine organic sulfur compounds that drive cloud formation by acting as a critical precursor of cloud condensation nuclei. However, discrepancies of natural aerosol radiative effects and climatic impacts between climate model simulations and satellite observations highlight an incomplete understanding of organic sulfur oxidation pathways. Here, we demonstrate a previously unrecognized rapid oxidation mechanism at the air–water interface of microdroplets, where volatile sulfides convert to particle precursors within milliseconds. Combining DFT calculation, QM/MM simulation, and sequential oxidation of possible intermediates, we proposed a new pathway of atmospheric particle precursor formation at the air–water interface of microdroplets, which is different from the traditional gas-phase oxidation pathway, offering a mechanistic solution to re-evaluate the model simulation gaps in natural aerosol radiative effects and climatic impacts.
研究领域:
大气化学
·
环境科学
·
物理化学
·
气溶胶科学
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LANGMUIR
·
2025
·
IF 3.9
Jianan Zan,Wei Shan,Lu Guo,Kwun Nam Hui,Min Luo,Fuming Chen
The global transition to green energy has precipitated a surge in the demand for lithium resources. However, terrestrial lithium reserves are limited and unevenly distributed. While the ocean harbors abundant lithium, its ultralow concentration and the interference from high concentrations of background ions pose significant challenges for efficient extraction. This study introduces a strategy for lithium extraction from seawater, leveraging the synergistic effect of a flexible LLZO/PVDF-HFP composite membrane and a TEMPO redox couple. A cubic phase garnet-type Li6.5Ga0.25La2.75Ba0.25Zr2O12 (LLZO) solid electrolyte, prepared via a sol–gel method, was compounded with PVDF-HFP to create a flexible membrane with high lithium-ion selectivity. With integration into a redox flow device, the TEMPO redox couple drives the transmembrane migration of lithium ions. The effects of the applied voltage, TEMPO concentration, and operating time on the lithium extraction performance were systematically investigated. At an optimal constant voltage of 1.5 V, the lithium concentration in the enriched solution reached 20.6 times that of the initial seawater. The system demonstrated excellent selectivity with Li/Na, Li/Ca, and Li/Mg selectivity factors of 2309.3, 11164.2, and 3808.9, respectively. After 72 h of continuous lithium extraction, the Li+ concentration in the recovered solution reached 130.6 times that of the feed, with an average energy consumption as low as 34.1 Wh/g(Li). This research demonstrates a promising path for the development of low-cost, highly selective seawater lithium extraction technologies.
研究领域:
能源材料
·
电化学工程
·
可持续资源回收
·
膜技术
·
锂离子分离
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危险品化学品经营许可证（带存储）