JOURNAL OF NANOPARTICLE RESEARCH
·
2017
·Vol. 19
·期 10
·1-13
·
IF 2.02
Yang Jiangbing,Gao Jianping,Wang Xiaoxue,Mei Shunkang,Zhao Ruiru,Hao Chaoyue,Wu Yongli,Zhai Xiangang,Liu Yu
Porous polyacrylamide hydrogel (PAM) was prepared by polymerization at room temperature. Cadmium sulfide/polyacrylamide hydrogels (CdS/PAM) was synthesized by in situ loading CdS nanoparticles and used for photocatalytic decomposition of water for the first time. The size distribution of the loaded CdS nanoparticles is 3–12 nm. We studied the enhanced photocatalytic activity and photo-corrosion inhibition of CdS/PAM the compared with pure CdS and probed the mechanism of the improvement. In particular, the CdS/PAM prepared in 0.003 M CdCl 2 solution exhibited the highest hydrogen production efficiency of 2.929 mmol g −1 h −1 , about 79 times that of pure CdS. The results demonstrate that the formation of new N–Cd bond and high transmittance of CdS/PAM dramatically enhance photocatalytic activity. The electron cloud of nitrogen atom can attract holes and repel photogenerated electrons, which lowers the carrier recombination probability. The results also reveal that the excellent hydrophilicity of hydrogel plays an important role in the inhibition of photocorrosion. In addition, CdS/PAM is easily recycled and processed. The present work will pave a good way for the application of smart hydrogels in the field of photocatalytic hydrogen production.
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2016
·Vol. 78
·期 3
·606-612
·
IF 1.473
Su Rong,Gao Jinwei,Deng Surong,Zhang Ruhe,Zheng Yuhui
Sensors bearing functional units that could transform the chemical recognition into readable signals due to binding to single or even more targets have received much attention. Here, two F − /Cu 2+ optical sensors based on lanthanide edifices were designed. The f – f forbidden transitions of lanthanide elements differ significantly from organic compounds since they exhibited favorable features such as narrow emissions and high color purity. Europium(III) complex of 2-(3-carboxyphenyl)imidazo[4,5-f]-1,10-phenanthroline (Eu-1) and europium(III) ternary complex of 2-(3-carboxyphenyl)imidazo[4,5-f]-1,10-phenanthroline and dibenzoylmethane (Eu-2) showed on–off changes in responses to the guest species. The excitation wavelength of Eu-2 could be extended to nearly visible light range, and this longer wavelength sensitisation will be useful in the selection of cheap laser sources. Generally organic complexes suffered from the instabilities in practical uses, the encapsulation of indicators into hosts will be necessary. Therefore, the lanthanide containing hybrid films which were composed of cross-linked siloxane and polymeric matrices were also prepared. The inorganic–organic film could be excited at 410 nm and demonstrated improved thermal stability. Moreover, we could detect F − and Cu 2+ in aqueous mixed solution and this feature would be favorable for future uses. Graphical F − /Cu 2+ optical lanthanide sensors were designed. The excitation wavelength of europium(III) complex with 2-(3-carboxyphenyl)imidazo[4,5-f]-1,10-phenanthroline and dibenzoylmethane (Eu-2) could be extended to nearly visible light range. Moreover, the Eu-2 doped film with cross-linked siloxane and polymeric hosts was also prepared.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 13
·913
·
IF 2.8
Meng Yuting,Yang Yujie,Chen Dongyang,Zhang Yingming,Chen Congliang,Li Hao,Zhang Zhenyu
In this paper, a novel soft magnetic powder core (SMPC) was successfully prepared by severally coating four kinds of organic binders on the surface of FeSiCrC micrometer powder. The effects of different organic binders with the same content on the micromorphology and soft magnetic properties of SMPC were studied in this experiment. The results show that the adhesive adhesion on the surface of FeSiCrC powder can effectively fill the air gap between FeSiCrC powder, which is conducive to the forming and compaction of magnetic powder core during the pressing process. The addition of organic binder can greatly improve the comprehensive soft magnetic properties of magnetic powder core. When 2-wt% silicone resin is added, its magnetic powder core has excellent magnetic properties, such as its low core loss ( P cv : 10 mT, 1000 kHz, 103.8 mW/cm 3 ), high quality factor ( Q : 625 at the peak), and high saturation magnetization. The different binders FeSiCrC magnetic powder cores prepared in this work are expected to be widely used in power applications and electronic products. It provides a new idea for the coating of magnetic powder core with organic binders.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Bao Changhua,Schüler Michael,Xiao Teng,Wang Fei,Zhong Haoyuan,Lin Tianyun,Cai Xuanxi,Sheng Tianshuang,Tang Xiao,Zhang Hongyun,Yu Pu,Sun Zhiyuan,Duan Wenhui,Zhou Shuyun
Strong light-matter interaction provides opportunities for tailoring the physical properties of quantum materials on the ultrafast timescale by forming photon-dressed electronic states, i.e., Floquet-Bloch states. While the light field can in principle imprint its symmetry properties onto the photon-dressed electronic states, so far, how to experimentally detect and further engineer the symmetry of photon-dressed electronic states remains elusive. Here by utilizing time- and angle-resolved photoemission spectroscopy (TrARPES) with polarization-dependent study, we directly visualize the parity symmetry of Floquet-Bloch states in black phosphorus. The photon-dressed sideband exhibits opposite photoemission intensity to the valence band at the Γ point, suggesting a switch of the parity induced by the light field. Moreover, a “hot spot” with strong intensity confined near Γ is observed, indicating a momentum-dependent modulation beyond the parity switch. Combining with theoretical calculations, we reveal the light-induced engineering of the wave function of the Floquet-Bloch states as a result of the hybridization between the conduction and valence bands with opposite parities, and show that the “hot spot” is intrinsically dictated by the symmetry properties of black phosphorus. Our work suggests TrARPES as a direct probe for the parity of the photon-dressed electronic states with energy- and momentum-resolved information, providing an example for engineering the wave function and symmetry of such photon-dressed electronic states via Floquet engineering.
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Nano Research
·
2021
·Vol. 14
·期 12
·4841-4847
·
IF 8.897
Song Jiaojiao,Yang Yixuan,Liu Shoujie,Li Lei,Yu Nan,Fan Yuteng,Chen Zhiming,Kuai Long,Geng Baoyou
The source of activity of metal/metal oxides has always been an interesting, important but highly challenging research topic in heterogeneous catalysis. In CO oxidation reaction, this work clarifies dispersion and support dictated activities of Pt including single-atom (Pt 1 ), 2.8 nm (Pt NP-S ) and 36 nm (Pt NP-L ) Pt supported on both reducible TiO 2 and “inert” Al 2 O 3 supports. The X-ray absorption fine structure (XAFS) shows that chemical state of Pt is affected by both dispersion and support: Pt 1 presents fully oxidized state in both Pt 1 /TiO 2 and Pt 1 /Al 2 O 3 ; Pt NP-S in Pt NP-S /TiO 2 appear nearly oxidized state while about half of Pt is metallic state in Pt NP-S /Al 2 O 3 ; Pt NP-L in both Pt NP-L /TiO 2 and Pt NP-L /Al 2 O 3 exhibit metallic state. All the Pt species supported on TiO 2 present much lower apparent activation barriers ( E app ) than that on Al 2 O 3 . Moreover, Pt 1 /TiO 2 possesses dozen times of efficiency than Pt NP-S /TiO 2 although they have similar E app values. A truth is finally made clear that a reducible metal oxide with low oxygen vacancy formation energy is critical to endow Pt/metal oxide a high activity and the single-atom dispersion of Pt is the way to maximize the active sites of Pt/metal oxide.
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Nature Chemistry
·
2026
·
IF 24.5
Ao Yue,Wang Xiaoxiao,Zhao Chengji,Zhang Yanyan,Peng Zhangquan,Wang Fuyi,Chen Shengli,Xie Congxin,Li Xianfeng
Aqueous batteries offer a relatively safe, energy-dense means to store electrochemical energy. Tin is a promising anode material, due to its potential four-electron redox-active states and lack of dendrite formation. However, the irreversible electrochemical behaviour of the Sn 4+ /Sn 2+ couple have limited high-capacity anode development. Here we achieve the reversible Sn 4+ /Sn 2+ conversion, enabling a Sn 4+ /Sn 0 anode for high-energy-density flow batteries. We accomplish this by adding iodide to highly soluble SnCl 4 solutions at ratios that form SnCl 6 2− and SnI 6 2− intermediate complexes. SnI 6 2− reduces reorganization energy during the electrochemical reaction of Sn 4+ /Sn 2+ , ensuring reversibility. SnCl 6 2− imparts anolyte solubility. The redox peak potential difference decreased from 978 mV (Cl − ) to 97 mV (I − ), with a substantial decrease to the electron transfer impedance decrease. Coupled with Br − /Br 2 , the assembled full battery showed 89% energy efficiency at 40 mA cm −2 , 227 Ah l −1 anolyte capacity and 205 Wh l −1 anolyte energy density. Based on these studies, we developed a kilowatt-scale stack that can operate stably for over 1,000 h.
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Science China-Chemistry
·
2026
·
IF 9.8
Zhou Yu,Lu Xuebin,Jing Run,Yu Zhihao
Acetalization of biomass-derived aldehydes and ketones catalyzed by solid acids represents a promising strategy for producing sustained-release fragrance carriers. Nevertheless, conventional microporous zeolites are plagued by mass transfer constraints and undesired side-reactions, particularly with bulky substrates. Adding to this complexity, the synergistic interplay between coexisting Lewis and Brønsted acid sites remains poorly understood. Here, we design a new-type of protonated fibrous mesochanneled aluminosilicates (H-Fibr-MAS) via in-situ Al incorporation, featuring open mesochannels and balanced Brønsted (Si-OH-Al) and Lewis (non-framework Al) acid sites. H-Fibr-MAS outperforms Al post-loading analogs (AlOx/Fibr-Silica), commercially protonated microporous zeolites and typical acidic metal oxides in biomass acetalization at room temperature (25 °C). Combining structure-activity correlations, site-poisoning experiments, and in-situ difference Fourier transformed infrared spectroscopy (FTIR), we unveil a Brønsted-dominated Lewis-Brønsted acid synergistic mechanism: Lewis acid sites selectively activate the carbonyl group of furfural, while Brønsted acid sites (especially medium-to-strong sites) facilitate the hemiacetal dehydration, the latter step being previously overlooked but exactly decisive in this dual-acid synergy. Our work establishes acid-site engineering and dual-acid synergy as key principles for designing efficient solid acids in biomass valorization.
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Nature Communications
·
2026
·
IF 18.1
Tang Jingjing,Zhang Xiang,Li Jie,Li Hongchao,Jia Yuqian,Fu Wanyi,Zhang Weiming,Qian Jieshu,Pan Bingcai
Heterogeneous catalytic degradation of per- and polyfluoroalkyl substances (PFAS) through cleavage of the strong C-F bonds offers a robust and sustainable approach for mitigating their global threat to ecosystems and human health. However, current reduction or oxidation methods generally achieve only partial degradation of PFAS, producing chain-shortened intermediates that are often more recalcitrant and thus resulting in limited defluorination efficiency. In this study, we developed a nanoconfined photocatalytic system by encapsulating MIL-125-NH 2 (Ti) within a graphene aerogel (GA) matrix. Mechanistic investigations reveal that the MIL-125-NH 2 (Ti)/GA composite could generate both reductive hydrated electrons (e aq – ) and oxidative hydroxyl radicals (HO • ) under UV irradiation, enabling integrated cascade reduction-oxidation reactions in a single system. Interestingly, the nanoconfinement effect of GA improves the adsorption affinity towards PFAS with various chain lengths by more than 30% and lowers the C-F bond energy by a maximum of 10.8%. These kinetic and thermodynamic advantages collectively resulted in high defluorination ratios, i.e., 90.2% for perfluorooctanoic acid (PFOA), 65.3% for perfluorohexanoic acid (PFHxA), and 51.8% for perfluorobutanoic acid (PFBA) within 12 h, which are typically unattainable in conventional heterogeneous catalytic systems. Our findings open avenues for advanced heterogeneous systems to address the global PFAS challenge.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2026
·
IF 3.1
Chen Haoran,Peng Delian,Cao Yu,Peng Wenhai
Laser-induced graphene (LIG) features monolithic in-situ fabrication, inherent flexibility and a continuous graphitized conductive network, showing unique advantages for flexible integrated supercapacitor electrodes. However, its low areal double-layer capacitance cannot meet the energy demand of high-performance flexible devices. Direct electropolymerization of polyaniline (PANI) on LIG faces specific bottlenecks distinct from conventional carbon cloth substrates: the smooth graphitized surface and three-dimensional macroporous skeleton of LIG lead to random nucleation, severe agglomeration and weak interfacial adhesion of PANI, which hinder conformal growth of active materials inside pore channels and limit performance improvement. To address this issue, a sequential electropolymerization strategy is proposed using layered δ-MnO 2 as a structural template interlayer. Three-dimensional macroporous LIG is first fabricated on polyimide via defocused UV laser irradiation, followed by uniform deposition of ultrathin δ-MnO 2 nanoclusters as heterogeneous nucleation sites. The pre-built MnO 2 template guides uniform conformal growth of PANI nanospheres, strengthens interfacial charge transfer, and realizes synergistic pseudocapacitance from both components. The optimized electrode delivers an areal capacitance of 562.9 mF cm − 2 at 1 mA cm − 2 . The assembled all-solid-state flexible supercapacitor exhibits excellent rate capability and cycling stability (86.8% retention after 5000 cycles) and mechanical robustness (95% capacitance retention under 90° bending). This work provides an interface engineering strategy for constructing high-performance LIG-based flexible energy storage devices.
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JOURNAL OF POLYMER RESEARCH
·
2026
·Vol. 33
·期 11
·425
·
IF 3.5
Xu Wenyu,Li Yan,Yan Zhixiang,Huang Jiaheng,Tan Zhiyong
In this study, poly(butyl acrylate) (PBA) seed latex was prepared through seed emulsion polymerization using five crosslinking agents: dicyclopentenyl acrylate (DCPA), N, N’-methylenebisacrylamide (MBA), ethylene glycol dimethacrylate (EGDMA), 2-(Dimethylamino)ethyl methacrylate (DMAEMA, abbreviated as DMA), and pentaerythritol tetraacrylate (PETA). After grafting, a series of acrylate-styrene-acrylonitrile (ASA) graft polymers were synthesized for toughening SAN Poly(styrene-co-acrylonitrile) resin. The results show that among the various types of crosslinking agents, DMA gives ASA grafted powders the most uniform particle size distribution and the highest grafting rate (34.6%), which is attributed to the electron-donating effect of its tertiary amine group. In the SAN/ASA (35/25) blend system, ASA particles crosslinked with DMA increased the impact strength to 21.7 kJ/m 2 , more than six times higher than that of pure SAN, with an elongation at break of 28.44%, while the Young’s modulus remained at 2481.6 MPa. The impact fracture surface was rough with evenly distributed pores, demonstrating excellent toughness. These findings reveal that the chemical structure of crosslinking agents not only governs the morphology and crosslinking density of the PBA core but also profoundly influences the energy dissipation mechanisms of the ASA/SAN blend system. This study provides a theoretical foundation and experimental evidence for the rational design of high-performance ASA toughening systems.
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Nature Communications
·
2026
·Vol. 17
·期 1
·11053
·
IF 18.1
Wu Bo,Liu Xuejie,Zeng Zhiheng,Li Bolong,Fang Haoyu,Ho Derek
Piezoionics holds promise for self-powered bioelectronics, yet existing hydrogel and elastomer systems are often limited by poor biocompatibility, environmental instability, and low output. Here, we report a biocompatible deep eutectic solvent-polyvinyl alcohol (DES-PVA) eutectogel featuring a robust piezoionic response and practical wearable sensing capabilities. By incorporating a choline chloride-glycerol DES into a PVA network, we engineer tailored hydrogen bonds that selectively constrain choline cations while enabling rapid chloride anion transport, thereby amplifying the piezoionic response to achieve a sensitivity of 60 mV kPa –1 . In vitro assays verify the excellent biocompatibility of the eutectogel. Furthermore, practical application demonstrations underscore its capability for precise and continuous monitoring of diverse physiological signals, including pulse waveform and electrocardiograms (ECG), with fidelity comparable to commercial sensors. Overall, this work establishes a self-powered, bio-compliant epidermal platform for advanced iontronics and bioelectronics.
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NATURE
·
2026
·Vol. 657
·期 8133
·918-924
·
IF 56.1
Xu Dongdong,Xiao Ke,Liu Ye,Luo Xin,Xu Jian,Wei Yikang,Ahmed Yameen,Yang Shuncheng,Liu Haonan,Wang Yinke,Huang Shun,Li Manya,Zhang Yuhong,Gao Han,Sun Hongfei,Duan Gongtao,Han Qiaolei,Liu Qiang,Zhang Shuo,Lv Xingjie,Jiang Jingfu,Li Chao,Liu Dongxue,Hao Min,Hou Xincheng,Saidaminov Makhsud I.,Tan Hairen
Environmentally sensitive ammonium halides have emerged as indispensable surface passivators for perovskite solar cells, demonstrating broadly effective performance at the laboratory scale 1 , 2 , 3 , 4 . However, the sensitivity of ammonium halides to humidity typically necessitates operation under an inert atmosphere 5 . Coupled with the heterogeneous distribution of passivators during large-area slot-die coating, applying such surface treatment techniques to the fabrication of metre-scale perovskite solar modules (PSMs) under ambient conditions remains challenging. Here we instead use chemically stable lead carboxylates as passivators on perovskite films engineered to have a naturally formed formamidinium iodide (FAI)-enriched surface by means of a high-saturated vapour pressure (SVP) solvent system (2-methoxyethanol (2-Me), 1,3-dioxolane (DOL) and dimethyl sulfoxide (DMSO)). By treating the tailored surface with lead dioleate (Pb(OA) 2 ) to enhance carrier transport and surface passivation, we fabricated PSMs that achieved certified efficiencies of 24.0% (aperture area of 810 cm 2 ) and 22.0% (total area 0.72 m 2 ) and passed all International Electrotechnical Commission (IEC) 61215 reliability tests. These results represent the highest reported performance for scalable, industrially viable perovskite photovoltaics (PVs).
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