FUEL
·
2024
·
IF 6.7
Mengmeng Zhang,Xu Chen,Hui Xue,Zhijia Zhang,Yang Wang,Yifang Zhang,Yida Deng,Yong Jiang
As an effective strategy to turn waste into treasure, electrochemical CO 2 reduction reaction (eCO 2 RR) producing value-added chemicals such as HCOOH attracts unremitting interest. However, the practical applications are limited by poor activity and selectivity, the key is to develop economical-efficient catalysts. Herein, gradient-doped Sn on the CuO surface (Sn-CuO) was developed for eCO 2 RR in an H-cell. Typically, the main reaction pathway of *OCHO → HCOOH was obtained via in situ experiments and further verified by theoretical calculations. Furthermore, the lowest Δ G *OCHO and Δ G *OCHO − Δ G *H as well as the highest Δ G *COOH enlist Sn-CuO with sufficient proton to produce HCOOH while inhibiting CO and H 2 by-products. Finally, the synthesized Sn-CuO delivers a maximum partial current density (23.6 mA cm −2 ) at −1.3 V REH and Faradic efficiency (91.5 %) at −1.2 V RHE for HCOOH, indicating excellent activity and selectivity.
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产品关联
DOI
高影响因子
InfoMat
·
2024
·
IF 22.7
Huan Li,Yu Gao,Xin Hong,Kanghui Ke,Zilong Ye,Siwei Zhang,Kefei Shi,Zhuo Peng,Hao Yan,Man-Chung Tang,Youwei Yao,Ben Zhong Tang,Guodan Wei,Feiyu Kang
Broadband photodetectors (PDs) capable of multi-wavelength detection have garnered significant interest for applications in environmental monitoring, optical communication, spectral analysis, and imaging sensing. Low-bandgap Pb–Sn hybrid perovskite photodetectors can extend the spectral response from the ultraviolet–visible (UV–vis) range to the near-infrared (NIR) and reduce the toxicity associated with Pb 2+ . The strategic introduction of Sn 2+ into Cs 0.15 FA 0.85 Pb x Sn 1− x I 3 ( x = 1, 0.8, 0.6, 0.5, 0.4, 0.2, and 0) not only preserves the cubic crystal structure with conformal multigrain growth but also broadens the film's absorption spectrum from 800 to 1000 nm NIR region. This indicates a well-controlled tunability of the Pb–Sn binary perovskite system. Specifically, the self-powered photodetector with a device structure of ITO/NiO x /PTAA/Cs 0.15 FA 0.85 Pb 0.5 Sn 0.5 I 3 /PCBM/BCP/Ag has shown remarkable optoelectrical properties. It exhibits a high external quantum efficiency (EQE) of up to 80% across the spectrum from 300 to 1000 nm, a responsivity ( R ) exceeding 0.5 A/W, and high detectivity ( D *) value of 1.04 × 10 12 Jones at 910 nm and 3.38 × 10 11 Jones at 1000 nm after weak attenuation. Intriguingly, the dark current of the Cs 0.15 FA 0.85 Pb 0.5 Sn 0.5 I 3 device is four orders of magnitude lower than that of devices made with pristine Pb or Sn only, strongly correlating with its significantly increased built-in potential and reduced trap density. Consequently, it demonstrates a −3 dB bandwidth of 2.23 × 10 4 Hz, fast rise and decay times of 61 and 30 μs, respectively, and a linear dynamic range (LDR) of 155 dB. Benefiting from its high sensitivity, a 5 × 5 PD array for NIR imaging and non-invasive pulse detection for photoplethysmography applications has been successfully demonstrated, showcasing the prosperous potential of Pb–Sn hybrid perovskite in the NIR range.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Kanghui Ke,Yu Gao,Jiazhi Meng,Yi He,Bohua Deng,Haoyu Huang,Si-Wei Zhang,Kai Zhang,Zhuhua Xu,Huan Li,Xiongxian Yao,Zilong Ye,Liping Song,Chang Shu,Shihe Yang,Ni Qin,H. Y. Fu,Hin-Lap Yip,Feiyu Kang,Guodan Wei
Developing stable and efficient photodetectors (PDs) for environmentally friendly applications such as biological imaging, optical communications, and wearable electronics demands novel materials with improved optoelectronic properties. Herein, by precisely controlling the Pb 2 ⁺ content (3%, 6%, and 12%) using a galvanic displacement reaction (GDR), we created a mixed 2D/3D phase structure that enhances the quality of the Sn-Pb thin films, which improved crystalline orientation, suppressed trap-assisted recombination and reduced Sn 2+ oxidation processes, resulting in superior environmental stability under air exposure conditions. The flexible device demonstrated robust stability, maintaining performance after 4000 bending cycles or 96 h of storage in ambient conditions. The self-powered quasi-2D Sn-Pb PDs exhibit an impressively low dark current of 1.2 × 10 −8 A cm −2 , rapid rise and decay time of 684 and 683 ns, a peak responsivity of 405 mA W −1 , and a peak detectivity of 1.19 × 10 13 Jones at 710 nm. Additionally, under LED illumination (λ = 910 nm), the photodetectors also demonstrate high fidelity in optical signal transmission, successfully facilitating encrypted communication sequences and image transmission at a rate of 25 kbps. This work presents a promising strategy for developing high-performance, stable quasi-2D Sn-Pb perovskite photodetectors, highlighting their potential for next-generation photodetectors in flexible, real-world environments.
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产品关联
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2025
·Vol. 222
·期 22
·2500553
·
IF 1.9
Yaqi He,Xinhua Li,Lihua Zhang,Jiawei Xu,Songhua Chen,Zongqing Ma
In this article, a batch of high-performance Sn-doped Nb 3 Al superconductors is prepared through mechanical alloying and subsequent low-temperature sintering. This article comparatively analyzes the superconducting properties, phase structure, and microstructure of Sn-doped Nb 3 Al under different sintering temperatures and sintering times to determine the most suitable sintering process for Sn-doped Nb 3 Al. The results show that the optimum sintering temperature of Sn-doped Nb 3 Al bulks is 800 °C, with an optimal sintering time of 5 h. The T c value of Sn-doped Nb 3 Al bulk obtained under this sintering condition is 14.8 k, and the value of J c is as high as 6.2 × 10 4 A cm −2 (4.2 K, 5 T). The elevated sintering temperature (900 and 1000 °C) results in significant growth of both Nb 3 Al grain size and Nb 2 Al nanoparticles. This reduces the number of effective pinning centers in the superconducting phase of Sn-doped Nb 3 Al, which severely weakens the flux pinning effect. As a result, the J c performance deteriorates gradually as the sintering temperature increases from 800 to 1000 °C. The extended duration of sintering time results in the formation of sintering holes, which significantly disrupt the continuity of the Nb 3 Al superconducting phase matrix and degrade its superconducting properties.
研究领域:
超导物理
·
材料科学
·
陶瓷与烧结
·
显微组织工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qu Ai,Shi-Kuan Sun,Yu Tian,Wei-Dong Xiao,Yi Zhao,Sheng-Heng Tan,Wei-Ming Guo,Hua-Tay Lin
For the sustainable development of nuclear energy, the fabrication of durable nuclear wasteforms, especially for high-level radioactive waste, is essential. This study introduces entropy engineering into zirconolite ceramics for the first time. A series of entropy-stabilized zirconolite ceramics with the general formula Ca( Zr , Hf , Sn ) x Ti 3-x O 7 (x = 0.8–2.2) were synthesized via cold-press sintering at 1450 °C for 10 h. The influence of multi-principal cation substitution on phase assemblage, microstructure, and chemical durability was systematically investigated. The incorporation of Zr, Hf, and Sn led to refined grain sizes, attributed to entropy-induced grain boundary pinning and lattice distortion. At x = 0.8, significant secondary phases including rutile and perovskite were observed. As the substitution level increased, these impurity phases were progressively suppressed, and phase-pure zirconolite was obtained at x = 1.8 and 2.0, as confirmed by XRD, although SEM still revealed trace perovskite. At x = 2.2, the reappearance of perovskite and formation of Hf-enriched zirconolite domains indicated the limit of solid solution stability. Raman and high-resolution TEM confirmed the 2 M zirconolite structure, accompanied by pronounced lattice distortion and stacking faults. Static leaching tests conducted in 1 M HCl revealed that samples with intermediate substitution levels (x = 1.2, 1.6, and 2.0) exhibited significantly improved chemical durability, with calcium release rates of 4.54 × 10 −4 , 2.79 × 10 −4 , and 1.14 × 10 −4 g·m −2 ·d −1 , respectively—an order of magnitude lower than that of conventional zirconolite (1.4 × 10 −3 g·m −2 ·d −1 ). The leaching rates of Zr, Hf, Sn, and Ti remained within the range of 10 −6 –10 −4 g·m −2 ·d −1 across all samples. These results demonstrate that entropy stabilization enhances phase purity, structural stability, and acid resistance, making entropy-stabilized zirconolite a promising matrix material for the immobilization of high-level radioactive waste.
研究领域:
材料科学
·
核工程
·
陶瓷学
·
废物处理
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 47
·29378-29385
·
IF 3.108
Leyan Nian,Junben Huang,Kui Wu,Zhi Su,Zhihua Yang,Shilie Pan
Five non-centrosymmetric (NCS) quaternary metal chalcogenides, BaCu2SiSe4, BaCu2GeS4, BaCu2GeSe4, BaCu2SnS4, and BaCu2SnSe4, were successfully synthesized by solid-state reaction in vacuum-sealed silica tubes. They crystallized in the three different space groups: Ama2 for BaCu2SnSe4, P3121 for BaCu2GeS4 and BaCu2GeSe4, and P3221 for BaCu2SiSe4 and BaCu2SnS4. Note that BaCu2GeS4 and BaCu2GeSe4 show the mirror symmetrical structures to those of BaCu2SiSe4 and BaCu2SnS4. In comparison with their structures, it can be found that the [CuSe4] units are connected together to form a two-dimensional (2D) layer structure in BaCu2SnSe4, which is different from the 3D framework structure formed by the interlinked [CuQ4] (Q = S and Se) units in other four title compounds. In addition, BaCu2SnSe4 exhibits only one type of tunnel structure with the isolated [BaSe8] units existing in each tunnel, which is also different from the other title compounds (two types of tunnels with the isolated [BaSe8] units and [BaSe6]n chains located). The interesting structural changes also indicate that slight change of cation size would result in different structure features, and future structure prediction should devote considerable attention to the different chalcogen atoms. Moreover, important optical properties (optical bandgap, infrared (IR) absorption edge, second harmonic generation (SHG) response) of the title compounds were systematically investigated. Among them, IR and Raman spectra indicate that all of them exhibit the wide IR absorption edges (∼22 μm). Powder SHG measurement shows that BaCu2SnS4 possesses good SHG response about 1.6 times that of benchmark AgGaS2 (AGS) at the particle size 55–88 μm. All results indicate that BaCu2SnS4 can be expected as a potential IR nonlinear optical (NLO) candidate. Theoretical calculation was also used to analyze the structure–property relationship and their electronic structures and origin of NLO effect were studied in detail.
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Chenlu Zhu,Zebin Liu,Lishi Ren,Siming Jiao,Xuebing Zhang,Qiukuan Wang,Zhimin Li,Yuguang Du,Jian-Jun Li
Endo -fucoidanases are important in structural analysis of fucoidans and preparation of fuco-oligosaccharides. However their enzymological properties and analysis of degradation products are scarcely investigated. Truncated endo - α (1 → 3)-fucoidanase Fda1 (tFda1B from Alteromonas sp. was overexpressed and characterized, showing highest activity at pH 7.0, 35 °C, and 1.0 M NaCl. Its K m and k cat were 3.88 ± 0.81 mg/mL and 0.82 ± 0.17 min −1 . Fe 3+ and Mn 2+ enhanced activity by 100% and 19.5% respectively. Co 2+ and Cu 2+ completely inactivated tFda1B, whereas Ni 2+ , Mg 2+ , Zn 2+ , Pb 2+ , Ca 2+ , Ba 2+ and Li + decreased activity by 58.8%, 56.0%, 50.6%, 47.7%, 28.9%, 15.6% and 37.5%, respectively. Catalytic residues were identified through structure and sequence alignment, and confirmed by mutagenesis. Degradation products of Kjellmaniella crassifolia fucoidan by tFda1B were characterized by LC-ESI-MS/MS, confirming tFda1B belongs to endo -(1 → 3)-fucoidanases, and backbone of K. crassifolia fucoidan is 1 → 3 fucoside linkage. This endo - α (1 → 3)-fucoidanase would be useful for elucidating fucoidan structures, and be used as a food enzyme.
研究领域:
生物化学
·
酶学
·
海洋生物技术
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
CORROSION
·
2023
·Vol. 79
·期 5
·486-496
·
IF 1.6
Zhao Yinghai,Li Wei,Wang Zhenwen,Li Ning,Xu Yanling,Li Deyu
In recent years, in the field of tinplate production, it has become a trend to use lower tin coating mass to lower production costs. However, the preparation of low Sn-coated steel must face two significant problems: toxic chromate post-treatment and low corrosion resistance. In this work, we developed an Mn-Al-P chemical conversion coating using a process sequence-adjusted tinplate of 0.5 g/m 2 tin coating mass as an alternative to the chromate treatment. Meanwhile, by adjusting the subsequence of the reflowing process and the post-treatment process, the wash water and electricity consumption were effectively reduced. The influence of reflowing time on the microstructural appearance, phase composition, surface element distribution, and corrosion resistance of this new brand tinplate was studied. Moreover, the composition was determined by x-ray photoelectron spectroscopy, and further discuss the formation mechanism of this coating. The results show that this mutielement coating could effectively fill tin-free zones on the surface of the tinplate and improve the corrosion resistance when the reflowing time is properly set up to 3.5 s after the process adjustment. However, continually extending the reflowing time would cause the phosphate coating to fall off, leading to the corrosion resistance deterioration. The coating was mainly made up of a series of amorphous phosphate compounds and metal oxides, which was suitable for a tinplate with low tin coating mass.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Meiqing Guo,Weijia Meng,Xiaogang Zhang,Xiao Liu,Zhongchao Bai,Shuai Chen,Zhihua Wang,Fuqian Yang
We report a facile route to synthesize porous Sn nanocrystals@acetylene black microspheres (Sn@AB MSs) via a galvanic replacement reaction of Zn microspheres in a SnCl 2 solution consisting of acetylene black (AB). The half cells of lithium-ion batteries with the Sn@AB MSs as the working electrode have a charge capacity of 480.8 mA h g −1 at 100 mA g −1 after 100 cycles, and the charge capacity of the half cells after the 100th cycle is slightly larger than that after the 80th cycle. The SEM images reveal that the electrode layer from the Sn@AB MSs experiences surface cracking during electrochemical cycling, while prolonged cycling leads to the closure of cracks. Electrochemical cycling induces self-organization of Sn and AB to form rose-like porous Sn@AB/Li 2 SnO 3 microflowers from porous Sn@AB MSs. The closure of cracks and formation of porous Sn@AB/Li 2 SnO 3 microflowers likely cause the increase of the charge capacity. The experimental results demonstrate that the porous Sn@AB MSs with acetylene black around Sn can alleviate the large volumetric strain due to lithiation/delithiation, reduce the migration distance of lithium to active sites, and promote exceptional Li storage, leading to better cycling stability.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固体物理
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiaojing Chen,Ning Zhang,Pengfei He,Xuli Ding
Low cost and considerable theory specific capacity (∼1195 mAh g −1 ) make Sb 2 SnO 5 (SSO) material becoming a potential candidate for sodium-ions battery anodes. However, the low electronic conductivity and sluggish ions transfer kinetic has inhibited the practical applications. Herein, we demonstrate a novel Sn/Sb@SSO@PCFs composite using simple but effective electrospinning methods, which enable SSO nanoparticles embedded with Sn and Sb nanodomains in situ generation. The SSO was first reported as anode for sodium-ion batteries and in situ generation Sb and Sn nanocrystals domain around the SSO oxides . Different from existing tactics, the unique composite establishes a robust and efficient electrical contact between the SSO and the conductive Sb and Sn phases, enabling fast ions and electrons transfer across the electrochemical active SSO/Sb/Sn. Meanwhile, the composites offer an opportunity to compromise the challenges faced by each entity and enhance the overall performance by circumventing the weakness of individual SSO, Sn and Sb. As evidenced, the as-fabricated composite has unexpected electrochemical properties , including high capacity and long cycle stability with a retention rate of 83% after 450 cycles at 0.5 C. Combined with synergistic Na + ions storage of SSO/Sb/Sb and a simple and scalable manufacturing process, this study provides a new strategy to modulate material delivering high capacity and cycle stability for the next generation sodium ions batteries (SIBs).
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
电池技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 25
·10539-10554
·
IF 4.5
Wei Yinsha,Haider Zeeshan,Yu Yizhen,Li Bingzhi,Niu Haili,Qiu Ri,Ouyang Yibo,Liu Jie
Printed circuit boards (PCB) are easily corroded under moist environment due to formation of dendrites and short circuit. It would be a promising approach to exploit intentionally formed dendrite covered by functional coating for corrosion inhibition to elongate the lifespan of PCB. In this work, a facile electrodeposition method has been applied to grow dendritic tin onto Cu as a substrate for PCB. Bioinspired formation of superhydrophobic surface (SHS) and liquid-infused surface (LIS) are adopted to minimize access of moisture to underneath Cu metal. In this regard, dimethylsilicone oil and zeolitic imidazolate framework (ZIF) nanoparticles are infused into dendritic matrix to form a solid–liquid ZIF-LIS coating. Morphology, composition and wettability are characterized by different sophisticated techniques. Beyond significant improvement in corrosion resistance, ZIF-LIS has demonstrated self-healing properties, improved mechanical stability and anti-icing behavior. Current finding provides a new approach to fabricate coating for PCB having extended stability against corrosive degradation.
Graphical abstract
研究领域:
材料科学
·
表面工程
·
电化学
·
纳米技术
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·Vol. 49
·期 2
·1846-1854
·
IF 5.532
Xinkun Liu,Ying Dai,Xinmei Pei,Wen Chen
The electrocaloric (EC) effect cooling technique of environmentally friendly lead-free thin film materials driven by electric fields has recently gained tremendous attention due to the urgent demand for microelectronic and integrated circuit refrigeration devices. However, the widespread use of lead-free materials in EC devices is seriously hindered due to the small electrocaloric temperature change (ΔT) within a narrow operation temperature span (T span ) near room temperature. Here, lead-free Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9-x Sn x O 3 (BCZT-xSn, 0 ≤ x ≤ 0.03) thin films were prepared on substrates (Pt/Ti/SiO 2 /Si) via a sol-gel route. The BCZT-0.02Sn thin film presents an excellent EC effect (ΔT = 32.74 K, ΔS = 37.18 J kg −1 K −1 ) and large EC strength (ΔT/ΔE = 0.033 K cm kV −1 , ΔS/ΔE = 0.037 J cm K −1 kg −1 kV −1 ) over a wide T span (∼26 K) under 1000 kV cm −1 near room temperature. The giant ΔT is mainly attributed to the emergence of an intermediate O phase and the formation of a multiphase (R, O and T phases) coexistence structure at room temperature, while the diffuse phase transition behavior is responsible for the wide T span . Our study provides a new idea for developing environment-friendly EC materials with an excellent room-temperature ΔT over a broad operational temperature region.
研究领域:
材料科学
·
功能材料
·
固态物理
·
环境友好材料
·
制冷技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）