CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Mengru Geng,Jiaqi Zhao,Jie Li,Boyue Liu,Ruiming Liu,Xiaojuan Wang,Wanlong Song,Mingzhe Shao,Yihao Luan,Qun Li,Meng Gao,Fengshan Zhang,Xiaosen Pan,Ning Ma,Guigan Fang
Hydrophilic cellulosic materials exhibit extraordinary effectiveness on sensitivity of humidity. However, the fibril network in fiber walls hinders both permeability and desorption of water, resulting in to weak their responsiveness and recoverability to humidity. Here, structural optimization is achieved by modulating interfacial bonding, resulting in an unprecedented increment in the response-recovery speed of cellulosic humidity sensors. Precisely, hydrolyzable thiol silane is introduced between cellulose nanofibers and carbon nanotubes for a covalent interface, which promotes a dense structure under evaporation induction (76.33 % reduction in thickness), avoiding the deep penetration of water. In addition, Cs 2 SnCl 6 perovskites are loaded by means of strong coordination to boost the chemical dissociation of water molecules, further enhancing the responsiveness and sensitivity of devices. The as-prepared sensor exhibits excellent response/recovery speed (1.8 s / 2.9 s) between 11 % RH to 95 % RH, which is ahead of cellulosic humidity sensors developed in the past three years, as well as satisfactory sensitivity (5.35 × 10 6 %), hysteresis (< 1 % RH), and stability (over 90 days). For application purposes, skin moisture, breathing patterns, and word syllables can be accurately identified. Moreover, it can monitor respiratory rate and amplitude stably during long-term exercise, indicating remarkable potential in human physiological humidity monitoring.
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Nano Energy
·
2024
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IF 16.8
Yue Jiang,Lin Fan,Herong Wang,Zehe Luo,Weiguan Zhang,Jie Wang,Xilong Sun,Ning Li,Jindong Tian
Large language models (LLMs) exhibit outstanding reasoning abilities when robots perform tasks, but are limited to the passively receiving information and lack multi-feature perception of realistic objects. Humans obtain complementary and coupled information from interactions with objects through the skin. Here, a multimodal tactile sensory system is reported to assist the LLM-equipped robots in actively perceiving and understanding multiple features of objects including material, compliance and thermal insulation. A multi-parametric tactile sensing array, where each sensor in the array comprises of a triboelectric unit, a decoupling pressure-temperature dual-mode sensing unit and a heating unit, is constructed to acquire the multiparametric tactile signals. The pressure-temperature sensing unit is fabricated from the developed aerogel/sponge nested composite structures, which exhibit stable compression resilience under the compression strain of over 90 %, impressive fatigue resistance with stable responses after 10,000 compression cycles, and linear thermoelectric responses over wide temperature gradients. The multi-parametric tactile signals are analyzed using Mamba time series network model, resulting in the high-precision clustering of multiple features (up to 98.3 %). Supported by a multimodal interactive perception framework, the LLM realizes multi-feature understanding of objects. With large-scale sample datasets and multi-task training, the LLM-equipped robots powered by the multimodal tactile sensory system are expected to realize embodied intelligence.
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Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 6
·1-9
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IF 23.2
Dai Xiaokang,Wang Longxiang,Fallatah Ahmed M.,Wang Xing,Almalki Abdulraheem S. A.,Qi Yiyu,Jin Xiaoyu,Yang Shengxiang,Yuan Bingnan
Translucent materials are widely used in indoor lighting, electronic display devices, photovoltaic devices, and other aspects of daily life. Developing materials with high transparency that can effectively manage the transmitted light spectrum is of significant practical importance. This study focuses on constructing a flexible composite film matrix using biomass nanocellulose fibrils (CNF) and polyvinyl alcohol (PVA) as raw materials. Based on the down-conversion luminescence principle, we use carbon nitride nanosheets (CNNs) as the core for light management, filtering UV rays from sunlight while converting them into visible light for light compensation. The transparency test results show that the prepared CNNs@CNF/PVA flexible composite film has a total transmittance of about 90% in the visible light range, with a haze greater than 60%. Three-dimensional fluorescence test results indicate that CNNs@CNF/PVA can convert UV light in the range of 250–375 nm into visible light in the range of 420–550 nm. Simulated outdoor lighting results show that the composite film material performs better than ordinary glass and PMMA in light transmission. This biomass-based flexible film material is expected to have broad applications in indoor lighting, flexible photovoltaic devices, and high-quality fruit and vegetable cultivation.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Qian-Qian Tang,Bang-Xiang Wu,Xiao-Wen Huang,Yi Hu,Dongmei Hou,Wei Ren,Ling-Ling Liu,Ying Chen,Lei Tian,Long-Shuai Zhang,Qing Sun,Jian-Ping Zou
Highly selective generation of singlet oxygen ( 1 O 2 ) in the electro-Fenton system remains challenging due to susceptibility of the O-O bond to break in O 2 reduction reaction and activation process of H 2 O 2 . Herein, the nitrogen-coordinated Fe single-atom catalyst with a high coordination number (FeN 6 /CN) was synthesized, allowing the Fe sites to remain trivalent while presenting a high spin state. The quenching experiments and EPR tests proved that the electro-Fenton system of FeN 6 /CN achieved high selectivity generation of 1 O 2 , showing excellent degradation performance of different organic pollutants. Combined with theoretical calculations, the FeN 6 sites displayed a lower energy barrier for the transfer from *H 2 O 2 to 1 O 2 . In the FeN 6 /CN’s electro-Fenton system, the high spin state of FeN 6 site ensured generation of H 2 O 2 via 2e - reduction. Simultaneously, the high oxidation state of FeN 6 site further achieved a highly selective generation of 1 O 2 by in situ activation of H 2 O 2 in the electro-Fenton system. Particularly, the FeN 6 /CN’s electro-Fenton system showed a high energy-efficient for pollutant removal (23.79 kWh·kg toc −1 ) compared to other electro-Fenton systems (50–300 kWh·kg toc −1 ). The electronic structure regulation of single atom sites provides a new avenue for highly selective generation of 1 O 2 in the electro-Fenton system.
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ACS Sensors
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2025
·
IF 9.1
Xiaomeng Li,Lina Xu,Jianliang Gao,Manqing Yan,Qiyang Wang
Traditional conductive hydrogels have disadvantages for wearable sensors, such as poor electrical conductivity, weak mechanical properties, narrow application temperature range, and required external power supply, which limit their wide application. However, manufacturing hydrogel sensors with excellent mechanical properties and self-adhesive, temperature-resistant, and self-powered properties remains a challenge. Herein, chitin nanofiber-reinforced eutectogels (CAANF) with self-adhesive, self-healing, transparent, environment tolerant, and good mechanical properties were obtained via a simple one-pot method with the deep eutectic solvent (DES) system composed of acrylic acid, acrylamide, and choline chloride (ChCl). High-density hydrogen bond networks between CAANFs can act as strong cross-linking sites, conferring high stretchability (1680%) and elasticity. Moreover, high-density hydrogen bond networks with dynamic reversibility can provide excellent self-healing and adhesion abilities. Due to the unique properties of DES, CAANF eutectic gels also exhibit good ionic conductivity and environmental resistance, allowing the sensor to be applied over a wide temperature range (−30 to 60 °C). Additionally, CAANF-based self-powered flexible sensors can be used to detect human movement, monitor health status, and transmit signals for the encryption and decryption of information according to the Morse code. This work expands the scope of portable applications in the field of wearable electronic devices.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yajie Feng,Chi Lin,Yifei Huang,Bing Li,Yingxin He,Jiangping Ma,Chaogang Ban,Lujie Ruan,Hongxing Jia,Xiaoping Tao,Liyong Gan,Xiaoyuan Zhou
The metal–metal interactions between different metal atoms within dual-metal-supported catalyst have garnered significant attention in effectively regulating the chemical and electronic structure of active sites, thus providing enormous opportunities to optimize the catalytic performance. Herein, by loading Cu clusters and Pd nanoparticles on TiO 2 (CuPd/TiO 2 ), it is found that Cu clusters enable the metalize transformation of Pd as a result of the metal–metal interactions between Cu and Pd, which remarkably improves the surface catalytic reaction as well as the separation and transfer of photogenerated carriers. The resultant photocatalyst exhibits an excellent activity for H 2 evolution coupled with benzyl alcohol oxidation, achieving yield rates of 43.7 μmol h −1 for H 2 and 22.0 μmol h −1 for benzaldehyde, and an apparent quantum efficiency (AQE) of 20.4 % at 313 nm for hydrogen evolution. This integration of metal–metal interactions within the dual-metal-supported catalyst open a new avenue for the design of advanced photocatalysts.
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JOURNAL OF CATALYSIS
·
2024
·
IF 6.5
Huali Zhang,Xiaoxiao Chen,Jiajia Cheng,Xintuo Yang,Wei Lin,Yidong Hou,Guigang Zhang,Xinchen Wang
The integration of heterogeneous photocatalysts with nickel catalysis is garnering considerable interest for their capacity to enable distinct metal-photoredox processes for organic synthesis. However, the challenge about robustness and recyclability of the photocatalyst persists. Herein, a crystalline carbon nitride (MCN-B) photocatalyst with intentionally introduced defects and a dedicated designed active site has been presented. Results reveal by incorporating the deprotonated cyano-group (N - –CN) sites, this host material could provide stable binding sites for Ni (II) ions through the Hard-Soft Acid-Base (HSAB) effect, thereby facilitating charge transmission between semiconductor and metal centers. Consequently, the integrated carbon nitride nickel (Ni/MCN-B) heterogeneous photocatalyst demonstrates high effectiveness in diverse photocatalytic C-N coupling reactions (21 examples, up to 93% yield) under conditions free from organic ligands and additives, which shows competent performance to the homogeneous catalysts. Moreover, the Ni/MCN-B catalyst demonstrates remarkable recyclability, maintaining its photoredox efficiency after 10 cycles with minimal loss of activity and a diminished metal leaching rate, which signifies a substantial advancement in the field of photocatalytic system design.
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ACS Nano
·
2025
·
IF 16
Yi Zhou,Canhui Lu,Rui Xiong
Daytime radiative cooling (DRC) materials offer a sustainable, pollution-free passive cooling solution. Traditional DRC materials are usually white to maximize solar reflectance, but applications like textiles and buildings need more aesthetic options. Unfortunately, colorizing DRC materials often reduce cooling efficiency due to colorant sunlight absorption. Thus, this study reports a hierarchical photonic structure consisting of photoluminescent scatterer networks and a nanocellulose cholesteric structure. This design effectively addresses the trade-off between cooling efficiency and coloration, achieving enhanced cooling through synergistic all-day coloration. Sustainable nanocellulose with highly ordered cholesteric structures selectively reflects visible wavelengths, generating structural color and high mid-infrared (MIR) emission. The photoluminescent scatterer networks enhance reflectance and convert absorbed light into photoluminescent emission, further promoting cooling. This synergistic photonic interaction results in a significantly enhanced high reflectance of 92%, high MIR emissivity of >90%, stable and tunable structural color appearance, and hours-long afterglow photoluminescence. Consequently, a subambient cooling of up to 11.3 °C under sunlight is attainable, accompanied by the ability to produce programmable structural color and photoluminescent patterns for daytime and nighttime visibility. The enhanced cooling efficiency achieved through the synergistic interplay of four optical mechanisms from the UV to MIR region offers a promising design paradigm for other DRC materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoyu Cheng,Huixiang Wang,Shaowei Wang,Yue Jiao,Chenyu Sang,Shaohua Jiang,Shuijian He,Changtong Mei,Xinwu Xu,Huining Xiao,Jingquan Han
The flexible and self-healing supercapacitors (SCs) are considered to be promising smart energy storage devices. Nevertheless, the SCs integrated with flexibility, lightweight, pattern editability, self-healing capabilities and desirable electrochemical properties remain a challenge. Herein, an all-in-one self-healing SC fabricated with the free-standing hybrid film (TCMP) composed of the 2,2,6,6-tetramethylpiperidin-1-yloxy-oxidized cellulose nanofibers (TOCNs) carried carbon nanotubes (CNTs), manganese dioxide (MnO 2 ) and polyaniline (PANI) as the electrode, polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) gel as the electrolyte and dynamically cross-linked cellulose nanofibers/PVA/sodium tetraborate decahydrate (CNF/PB) hydrogel as the self-healing electrode matrix is developed. The TCMP film electrodes are fabricated through a facile in-situ polymerization of MnO 2 and PANI in TOCNs-dispersed CNTs composite networks, exhibiting lightweight, high electrical conductivity , flexibility, pattern editability and excellent electrochemical properties. Benefited from the hierarchically porous structure and high mechanical properties of TOCNs, excellent electrical conductivity of CNTs and the desirable synergistic effect of pseudocapacitance induced by MnO 2 and PANI, the assembled SC with an interdigital structure demonstrated a high areal capacitance of 1108 mF cm −2 at 2 mA cm −2 , large areal energy density of 153.7 μWh cm −2 at 1101.7 μW cm −2 . A satisfactory bending cycle performance (capacitance retention up to 95 % after 200 bending deformations) and self-healing characteristics (∼90 % capacitance retention after 10 cut/repair cycles) are demonstrated for the TCMP-based symmetric SC , delivering a feasible strategy for electrochemical energy storage devices with excellent performance, designable patterns and desirable safe lifespan.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Dejian Zhang,Zhiqiang Fang,Shuiqing Hu,Xueqing Qiu
Cellulose nanofibril (CNF) films with both high strength and high toughness are attractive for applications in energy, packaging, and flexible electronics. However, simultaneously achieving these mechanical properties remains a significant challenge. Herein, a multiscale structural optimization strategy is proposed to prepare high aspect ratio CNFs with reduced crystallinity for strong and tough films. Carboxymethylation coupled with mild mechanical disintegration is employed to modulate the multiscale structure of CNFs. The as-prepared CNFs feature an aspect ratio of >800 and a crystallinity of <60 %. The film prepared using CNFs with a high aspect ratio (~1100) and reduced crystallinity (~54 %) exhibits a tensile strength of 229.9 ± 9.9 MPa and toughness of 22.2 ± 1.4 MJ/m 3 . The underlying mechanism for balancing these mechanical properties is unveiled. The high aspect ratio of the CNFs facilitates the transfer and distribution of local stress, thus endowing the corresponding film with high strength and toughness. Moreover, the low crystallinity of the CNFs permits the movement of the cellulose chains in the amorphous regions, thereby dissipating energy and finally increasing the film toughness. This work introduces an innovative and straightforward method for producing strong and tough CNF films, paving the way for their broader applications.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhiwei Zhao,Yu Li,Fei Wang,Zhitao Xu,Sai Zhang,Li Li,Junyu Fan,Jie Liu
Monitoring and regulating the formation of toxic byproducts in advanced oxidation processes (AOPs) is of great significance for their practical application in water treatment. In this work, we found that dichloroacetonitrile (DCAN), a common N-containing byproduct in chloramination disinfection, can be formed with the co-presence of g-C 3 N 4 and chloride in a peroxymonosulfate (PMS) system. The measured value was 12.01 μM within 12 h under the given conditions. Structure analysis of raw and used g-C 3 N 4 demonstrated that g-C 3 N 4 decomposition indeed occurred, and C = N bonds acted as primary active sites, releasing N resources for subsequent DCAN formation. Additionally, multiple parameters, including the reactant (i.e., g-C 3 N 4 , PMS, Cl - , phenol) dose and solution pH, were observed to remarkably affect the yield of DCAN. Phenol was identified as the organic precursor of DCAN and may cooperate with inorganic chloramine to promote DCAN formation via the decarboxylation pathway. This study highlights the generation of DCAN in N-involved catalyst-based AOPs and improves understanding of the DCAN formation mechanism.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yali Liu,Zhengwei Zhang,Shanmin Tao,Tianjiao Li,Yunke Wu,Cheng Zhang,Peng Cao
Nanocellulose has shown potential for inflammatory modulation. However, limited research exists on the extraction and utilization of plant-derived nanocellulose, particularly from medicinal sources like ginseng, for treating inflammatory diseases such as ulcerative colitis (UC). Current UC treatments are often associated with side effects and limited therapeutic efficacy, making nanocellulose-based therapy a promising alternative. Herein, we extracted ginseng-derived nanofibers (GNFs) from ginseng solid residues and systematically screened different preparation methods. We evaluated their therapeutic potential in a dextran sulfate sodium (DSS)-induced model. GNFs inhibited key inflammatory pathways, including TLR4-medaited PI3K/AKT-NF-κB signaling, while promoting epithelial barrier restoration, which was further validated using organoid models. 16S rRNA sequencing and metabolomics revealed that GNFs administration restored gut microbiota balance by modulating microbial diversity and abundance, and influenced key metabolic pathways associated with inflammation. Additionally, GNFs enhanced the intestinal retention and therapeutic efficacy of 5-ASA, demonstrating their dual role as a therapeutic agent and drug delivery platform. These findings suggest that GNFs offer a new strategy for UC management, with broader implications for gastrointestinal health.
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