Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yangjiao Han,Kaixin Xi,Chengshu Zhang,Wenpin Wang,Zhibo Li
Achieving an optimal combination of high toughness, healability, and recyclability in silicone-based elastomers remains a significant challenge, primarily attributed to the inherently weak interactions between polysiloxane molecules. Herein, a thermoplastic poly(silicone-urea) elastomer exhibiting superior mechanical properties is developed by optimizing the synergistic Zn(II)–carboxylate interactions and weak hydrogen bonds between thermodynamically incompatible poly(dimethylsiloxane) (PDMS) and poly(propylene glycol) (PPG). Despite their distinct polarities, PDMS and PPG are chemically constrained, leading to microphase separations exclusively at the nanoscale. Furthermore, the hard segment comprises discrete and small hydrogen-bonding domains and metal-coordination domains. The forced compatibility and spontaneous phase separation of soft segments, in conjunction with the superimposed reversibility of discrete hard segment regions, can cooperatively dissipate energy during elastomer deformation. The obtained elastomer demonstrates a remarkable toughness of 69.9 MJ m−3, an exceptional stretchability of 2259%, and good elastic recovery under small deformation (≤300%) while preserving good recyclability and healability. These properties position the elastomer as a promising candidate for applications in flexible electronic devices, thereby contributing to the development of a sustainable society.
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JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Xiao Linfeng,Wang Xinyue,Fu Lichun,Deng Wenqiang,Liang Boyu,Li Runrun,Hong Yan,Du Jie,Zhou Zhenyuan,Liao Runhua
Due to the low cost and abundant reserves of transition metals, there is an urgent imperative for the design and fabrication of transition metal electrocatalysts to expedite hydrogen production through the hydrogen evolution reaction (HER). We present a self-supported needle-grass-shaped Zn-Co (ZC) composition on porous nickel foam (NF) via conventional hydrothermal synthesis. The Zn-Co/NF electrodes demonstrate remarkably efficient HER performance in 1.0M KOH alkaline solution. Specifically, the ZC (1:4)/NF catalyst exhibits an overpotential of 171.9 mV at a current density of 10 mA cm −2 owing to the synergistic effect arising from the combination of Zn-Co composition and Ni layers. Furthermore, stability tests demonstrate that the linear sweep voltammetry (LSV) curves of the ZC (1:4)/NF catalyst exhibits only marginal changes even after undergoing 1000 consecutive cycles at a scan rate of 20 mV s −1 . This study presents an innovative approach for the design and fabrication of highly efficient electrocatalysts for HER. Graphical
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Meiqing Yan,Jiapeng Yang,Enrou Mei,Ye He,Zhaoping Chen,Weiwei Huan,Xiaojuan Liang,Weidong Xiang
To address the issues of Pb toxicity and stability in traditional lead halide perovskite materials, this study presented an environmentally benign aqueous-phase synthesis method for the fabrication of a series of high-performance, green-emitting, lead-free organic–inorganic hybrid manganese(II) halide (OIMnHs) materials, (C12H28N)2Mn(1–x)ZnxBr4. Through Zn2+ doping, the optical properties and stability of the materials were significantly enhanced. Notably, (C12H28N)2Mn0.95Zn0.05Br4 exhibited a remarkable photoluminescence quantum yield (PLQY) of 97.2% and narrow-band green emission at 520 nm with a full width at half-maximum (fwhm) of 43 nm. Furthermore, (C12H28N)2Mn0.95Zn0.05Br4@PET composite films, fabricated via a double-layered PET film encapsulation technique, demonstrated exceptional environmental stability, including resistance to air, heat, water, and blue light. Finally, by integrating (C12H28N)2Mn0.95Zn0.05Br4 with commercial K2SiF6:Mn4+ red phosphor, a composite light conversion film was developed, achieving an impressive wide color gamut coverage of 116.73% NTSC 1953 and 86.82% Rec. 2020. Importantly, the aqueous-phase method exhibited excellent scalability, as demonstrated by a successful 20-fold scale-up production without compromising the optical properties or crystal structure of the materials, highlighting its potential for large-scale manufacturing. This study paved the way for the development of high-performance, environmentally friendly, low-cost, and readily scalable lead-free halide materials for wide-color-gamut backlight displays.
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NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Jiaming Cui,Xiaoting Cao,Xi Wang,Jie Liu,Ningyi Yuan,Jianning Ding
The strategic development of high-efficiency electrocatalysts for the oxygen reduction reaction (ORR) remains a pivotal challenge in advancing high-performance zinc-air batteries (ZABs) towards commercial viability. In this work, we developed a template-directed synthesis of Co, N-co-doped polyhedral carbon 3D frameworks (Co-N-C-x) through controlled pyrolysis of Co-ZIF precursors grown on Co-ZnO nanorod self-template. Owing to its unique carbon skeleton architecture and uniform dispersion of Co and N species, the optimized catalyst (Co-N-C-7%) exhibits enhanced ion/electron-transfer kinetics, improved mass transport capabilities. Consequently, the Co-N-C-7% catalyst exhibits superior ORR performance, achieving a half-wave potential (E1/2 = 0.878 V vs. RHE) that is 3 mV higher than commercial 20 wt% Pt/C (E1/2 = 0.875 V vs. RHE), along with exceptional stability. When applied in ZABs, the Co-N-C-7% cathode delivers a higher peak power density (178 mW cm-2) compared to Pt/C-based counterparts (152 mW cm-2). This work provides a simple and reliable control scheme for designing cost-effective, high-performance, and durable ORR electrocatalysts.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Haifeng Jiang,Meng Song,Yuhang Li,Wei Jia,Jiahao Qi
Catalytic pyrolysis of waste plastics under nitrogen-rich conditions to produce nitrogenous compounds represents a highly promising technological approach. It can achieve high-value conversion of waste plastics and expand the synthesis process of nitrogenous products. This work uses polyethylene terephthalate (PET) as the raw material and urea as the nitrogen source to produce aromatic amines, and prepares Zn/CuCo 2 O 4 spinel catalysts to enhance the above synthesis process. The results indicate that the optimal mass ratio of PET and urea is 1:1, where the relative content of nitrogenous compounds in the liquid product reaches 86.69 %, and the selectivity of aromatic amines reaches 52.48 %. The addition of the spinel catalyst significantly improves the selectivity of aromatic amines. Compared with the CuCo 2 O 4 catalyst, ZnCo 2 O 4 exhibits superior catalytic conversion performance. The optimal addition ratio of the ZnCo 2 O 4 catalyst is 15 %, and the optimal pyrolysis temperature is 550 ℃. Under these conditions, the selectivity of aromatic amines increases by 11.11 % compared to non-catalytic pyrolysis. In addition, the obtained solid residue containing the used catalyst is considered as a potential adsorbent and can be applied in water treatment. It has significant removal ability for methylene blue dye. This work not only provides a feasible approach for the production of aromatic amines, but also provides important support for the high-value utilization of waste plastics.
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JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Mengjie Cao,Shuangde Li,Shikun Wang,Weichen Xu,Xin Zhou,Guangxin Ma,Yunfa Chen
Developing an efficient and environmentally friendly catalyst is important for the production of pure H 2 and carbon nanomaterials. Catalytic cracking of methane offers the possibility of producing these high-value products. For this reason, stabilizing the surface active sites of activated methane by modulating the interaction between metal and support has attracted much attention in the development of hydrotalcite-derived NiAl catalysts. Hence, the influence of Zn content and cracking temperature on the structure and performance of hydrotalcite-derived NiZnAl methane cracking catalysts were investigated. It is shown that alloying Zn with Ni reduces the electron density near Ni atoms, promotes the reduction of mixed metal oxides, producing strong interactions between Ni and support, thus improving the stability of the catalyst during methane decomposition. Thus, this strong interaction between Ni and support stabilized the Ni particle size and inhibited the sintering of Ni during the reaction. The Ni 2.7 Zn 0.3 Al can maintain a H 2 yield of more than 60 % over a 600 min reaction time at 600 °C. TEM analysis showed that the strong metal support interaction changed the morphology of the deposited carbon, maintained the balance between carbon diffusion and CH 4 dissociation, provided more growth sites for carbon nanotubes, and also prevented the rapid deactivation of the catalysts because of carbon encapsulation. This article may provide guidance for the design of Ni-based methane cracking catalysts with excellent stability.
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BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Min Feng,Qian Zhang,Xiaofang Chen,Die Deng,Xiaoyi Xie,Xiupei Yang
Single-atom catalysts with atomically dispersed M-Nx active sites have been widely used as nanozymes for colorimetric sensing due to their similar structure to natural enzymes , but they are still limited by their biological activity. Herein, controllable synthesis of B-doped Zn–N–C (ZnBNC) single-atom nanozymes (SAzymes) was designed and realized for the first time as a potent peroxidase mimetic. Based on the peroxidase-like activity of ZnBNC SAzymes, a novel colorimetric method was developed for the highly sensitive and selective detection of p-phenylenediamine (PPD) with a wide response range (0.3–10 μM) and a low detection limit (0.1 μM), which can be used as an alternative method for the detection of PPD in hair dyes and dyed hair samples.
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PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Fengxia Yang,Xiaofei Dong,Lei Yu,Xudong Sun,Jiangtao Chen,Yun Zhao,Yan Li
The cation ratio in Cu-poor and Zn-rich CZTSSe absorbers is key to decide the photovoltaic performance of CZTSSe solar cells, while its toleration and the influence mechanism is still not clear. In this work, for single-layer-structured CZTSSe absorbers spin-coated from metal chloride precursors with constant Cu and Zn values, the Zn/Sn ratio is regulated in the range of 0.8∼1.6. It is found that the Zn/Sn ratio has great influence on the morphology and electrical properties of the CZTSSe absorbers and thus the performance parameters of the CZTSSe cells. Comparatively, the results show that a 1.2 Zn/Sn ratio can boost the photovoltaic efficiency to 10.65% with a relatively high open-circuit voltage (VOC) of 481 mV and a reduced VOC-deficit of 585 mV. Detailed studies indicate that the 1.2 Zn/Sn ratio could favor the large-grain growth, increase the carrier concentration, suppress the carrier recombination, and reduce the band-tail effects and Urbach energy, thus leading to the highest efficiency with superior photovoltaic performance. The optimization of the Zn/Sn ratio in chloride precursor-coated CZTSSe absorbers would be beneficial for in-depth understanding of the effect mechanism of the element ratio on device performance.
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Journal of Inorganic and Organometallic Polymers and Materials
·
2014
·Vol. 25
·期 3
·535-543
·
IF 1.077
Zhou Yong-Hong
Three new multi-dimensional coordination polymers, namely, [Cd(SIP)(HBPP)(BPP) 0.5 (H 2 O)·H 2 O] n ( 1 ), [Zn(L)(BIB) 0.5 ] n ( 2 ), and {[Cd 2 (L) 2 (BIB) 2 ](H 2 O) 7 } n ( 3 ) (H 3 SIP = 5-sulfo-1,3-benzenedicarboxylate, BPP = 1,3-bis(4-pyridyl)propane, H 2 L = 4-oxyacetate-benzoic acid, and BIB = 1,4-bis(imidazol-1-yl)-butane), were hydrothermally synthesized by self-assembly of the flexible N-donor ligand and the polycarboxylate ligands. Single crystal X-ray analyses reveal that complexes 1 – 3 possess different structural features. The Cd(II) atom in complex 1 is seven-coordinated by two bidentate chelating carboxylate groups and two nitrogen atoms as well as one water molecule. The adjacent Cd(II) atoms are bridged by two carboxylate groups to form 1D chains running along different directions, which are connected by BPP ligands to generate 2D network. The resulting 2D networks are further linked by hydrogen-bond interactions, affording a 3D supramolecular architecture. In complex 2 , the [Zn 2 (COO) 4 ] units are bridged by L 2− ligands to generate 1D double chain structure and then linked by BIB ligands to give 2D grid framework. In complex 3 , the [Cd(L 2 )] n and [Cd(BIB)] n helixes are alternately arranged, leading to the formation of a 2D bilayer structure.
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Catalysis Science & Technology
·
2021
·Vol. 11
·期 21
·7200-7216
·
IF 6.119
Hairus Abdullah,Hardy Shuwanto,Dong-Hau Kuo
A Ni–Mg bimetal-doped Zn(O,S) photocatalyst has been synthesized, characterized, and tested for several photocatalytic applications. The hydrogen generation reaction, hydrogenation reaction for chemical transformation, detoxification of hexavalent chromium, and mixed dye (MB + RhB + MO) degradation under simulated solar-light illumination were confirmed. The essential characterization results indicated improved oxygen vacancy sites on the catalyst with enhanced photoresponse, better photocarrier separation, and facile charge transfer properties. A typical catalyst, NMZ-S10, was evaluated with a 1000-cycle CV test to demonstrate its long-term use for industrial application. Stable reusability experiments for the HER, PHR, PHC reaction, and PDM also supported the long-term application. The photocatalytic HER of NMZ-S10 could evolve hydrogen at a rate of 4000 μmol g−1 h−1. 30 ppm azobenzene-to-aniline conversion was completely done in 2 h of reaction. Detoxification of 30 ppm hexavalent chromium was conducted in 70 min of reaction. Finally, 10.5 ppm MB–RhB–MO mixed dye degradation was carried out in 1 h of reaction. The as-synthesized NMZ-S10 catalyst has demonstrated its capability to overcome energy and environmental issues promisingly. The great photocatalytic activities are discussed and elucidated with a plausible mechanism to rationalize the superb catalytic performance.
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高影响因子
Protection of Metals and Physical Chemistry of Surfaces
·
2017
·Vol. 53
·期 1
·118-126
·
IF 0.707
Fashu S.,Khan R.
Ternary Zn–Mn–Ni alloy coatings were electrodeposited for the first time from a choline chloride based ionic liquid with the aim of collecting properties of binary Zn–Mn and Zn–Ni alloys into one alloy system. The effect of electrodeposition potential on the composition and corrosion performance of the obtained ternary Zn–Mn–Ni deposits was investigated and contrasted with the characteristics of Zn–Mn and Zn–Ni deposits. Cyclic voltammetry revealed that the deposition of ternary Zn–Mn–Ni alloys behaved differently from the deposition of binary Zn–Mn and Zn–Sn alloys and that Mn deposition takes place at positive potentials in the Zn–Mn–Ni electrolyte than in the Zn–Mn electrolyte due to the presence of Ni 2+ ions in the electrolyte. X-ray diffraction studies showed that the Zn–Mn–Ni ternary alloys consist of a lattice of Zn (with Mn and Ni imbedded inside) at low electrodeposition potentials and MnZn(with Ni imbedded inside) phase at high electrodeposition potentials. Chemical composition analysis show that the Mn content in the ternary Zn–Mn–Ni alloy increased with increase in electrodeposition potential, whereas Zn and Ni contents are suppressed. The corrosion tests results indicate that through addition of Ni into the Zn–Mn binary alloy, the Zn–Mn–Ni alloy tailored are more corrosion resistant than the Zn–Mn binary alloy whilst the passivation behavior is still preserved.
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Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 47
·27095-27101
·
IF 12.732
Zilong Zhuang,Chang Liu,Yiyang Yan,Pengcheng Ma,Daniel Q. Tan
Lithium metal anode (LMA) possesses the largest energy density among all anode candidates, while dendrite growth is a huge barrier in the direct application of LMA in batteries. Herein, metal–organic framework (MOF) derived Zn–CxNy nanoparticle arrays are newly grown onto carbon cloth as an effective host toward lithium metal anode. The N and Zn species are lithiophilic to Li-ions, resulting in a stable Li plating/stripping process of up to 2300 h without running into a dendrite issue when operating at a current density of 10 mA cm−2. The newly developed ZNCC-Li anode also exhibits an ultralow voltage hysteresis of only 6.4 mV at the end of the operating process. This work creates an effective design of MOF-derived lithium metal anode suitable for high-energy batteries.
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