Advanced Materials Interfaces最新文献

英文中文

Nanoengineering Scalephobic Surfaces for Liquid Cooling Enhancement 纳米疏水表面工程用于提高液体冷却效果

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-17 DOI: 10.1002/admi.202400383

Julian Schmid, Tobias Armstrong, Niklas Denz, Lars Heller, Lukas Hegner, Gabriel Schnoering, Jovo Vidic, Thomas M. Schutzius

Crystallization fouling, a process where mineral scales form on surfaces, is of broad importance in nature and technology, negatively impacting water treatment and electricity production. However, a rational methodology for designing materials with intrinsic resistance to scaling and scale adhesion remains elusive. Here, guided by nucleation physics, this work investigates the effect of coating composition and surface structure on the nucleation and growth mechanism of scale on metallic heat transfer surfaces nanoengineered by large‐area techniques. This work observes that on hydrophilic nanostructured copper, despite its significantly enlarged surface area compared to smooth surfaces, scale formation is substantially suppressed leading to sustained, efficient cooling performance. This work reveals the mechanism through thermofluidic modeling coupled with in situ optical characterization and show that surface bubble formation through degassing is responsible for generating local hot spots enhancing supersaturation. This work then demonstrates a scalephobic nanostructured surface which reduces the accumulated surface scale mass 3.5× and maintains an 82% higher heat transfer coefficient compared to superhydrophobic surfaces with corresponding energy conversion savings. This work not only advances the understanding of fouling mechanisms but also holds promise for practical applications in industries reliant on efficient heat transfer processes.

结晶堵塞是一种矿物鳞片在表面形成的过程，在自然界和技术领域具有广泛的重要性，对水处理和电力生产造成了负面影响。然而，设计具有内在抗结垢和抗水垢附着能力的材料的合理方法仍遥遥无期。本文以成核物理学为指导，研究了涂层成分和表面结构对通过大面积技术纳米化的金属传热表面的成核和水垢生长机制的影响。该研究发现，尽管亲水性纳米结构铜的表面积比光滑表面大得多，但其水垢的形成却受到了极大的抑制，从而实现了持续、高效的冷却性能。这项研究通过热流体建模和原位光学表征揭示了这一机制，并表明通过脱气形成的表面气泡是产生局部热点提高过饱和度的原因。随后，这项工作展示了一种疏水性纳米结构表面，与超疏水表面相比，这种表面可减少 3.5 倍的累积表面鳞片质量，并保持高出 82% 的传热系数，从而节省相应的能量转换。这项工作不仅加深了人们对结垢机理的理解，而且有望在依赖高效传热过程的行业中得到实际应用。

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引用次数: 0

Improved Self‐Powered Photoresponse of ZnO Nanorods/SnS Nanosheets/PEDOT:PSS Heterostructure by Pyro‐Phototronic Effect 通过热释光效应提高氧化锌纳米棒/SnS 纳米片/PEDOT:PSS 异质结构的自供电光响应能力

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-16 DOI: 10.1002/admi.202400430

Weixin Ouyang, Haoxuan Geng, Jianyuan Wang

A ZnO nanorods/SnS nanosheets/PEDOT:PSS (ZSP) heterostructure is constructed by vapor growing a SnS nanosheets layer and spin‐coating a PEDOT:PSS layer onto ZnO nanorods arrays. By controlling the growth time of the ZnO nanorods, a series of ZSP heterojunction samples with various ZnO layer thicknesses are prepared. The formation of heterostructures contributed to the improved pyroelectric performance and fast response speed of these as‐prepared ZSP photodetectors (PDs). The thickness of the ZnO nanorod layer plays an important role in tuning the photoelectric performance of these PDs. For the optimized ZSP PD with an 800 nm thick ZnO layer, the pyroelectric effect improves its photocurrent by 137% at 365 nm and 0 V bias, and the ratio of the pyroelectric current to the photoelectric current reaches as high as 870% at 532 nm. This device also displays an ultra‐short rise/decay time of 0.64/0.95 ms at 405 nm. Moreover, the pyroelectric responses of these ZSP heterojunction PDs are further improved by increasing the light illumination frequency. These results demonstrate that the rational construction of novel heterojunctions and utilization of the pyroelectric effect holds great potential for fabricating high‐performance self‐powered PDs.

通过在氧化锌纳米棒阵列上气相生长 SnS 纳米片层和旋涂 PEDOT:PSS 层，构建了氧化锌纳米棒/SnS 纳米片/PEDOT:PSS（ZSP）异质结构。通过控制氧化锌纳米棒的生长时间，制备出了一系列具有不同氧化锌层厚度的 ZSP 异质结样品。异质结构的形成有助于提高这些制备的 ZSP 光电探测器（PDs）的热释电性能和快速响应速度。氧化锌纳米棒层的厚度在调整这些 PD 的光电性能方面起着重要作用。对于具有 800 nm 厚氧化锌层的优化 ZSP PD，在 365 nm 和 0 V 偏压条件下，热释电效应使其光电流提高了 137%，在 532 nm 条件下，热释电电流与光电流的比率高达 870%。该器件在 405 纳米波长下的上升/衰减时间也非常短，仅为 0.64/0.95 毫秒。此外，通过提高光照频率，这些 ZSP 异质结 PD 的热释电响应也得到了进一步改善。这些结果表明，合理构建新型异质结并利用热释电效应在制造高性能自供电 PD 方面具有巨大潜力。

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引用次数: 0

Niobium‐Doped Titanium Dioxide: Effect of Conductivity on Metal‐Semiconductor Tribovoltaic Devices 掺铌二氧化钛：导电性对金属半导体摩擦光伏器件的影响

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-16 DOI: 10.1002/admi.202400567

Kaspars Mālnieks, Sabīna Kļimenko, Peter C. Sherrell, Anatolijs Šarakovskis, Raivis Eglītis, Krišjānis Šmits, Artis Linarts, Andris Šutka

Tribovoltaic devices have emerged as promising technologies for converting mechanical motion to electricity via surface charge generation. To maximize the electromechanical conversion of tribovoltaic devices, conventional literature has focussed on engineering a large difference in work functions between the contact materials. However, recent reports suggest that other factors beyond work function, such as temperature, play a key role in electromechanical conversion. Herein, TiO2 (a cheap, abundant oxide material) is doped with Nb5+, resulting in an improved tribovoltaic performance up to 65 times. This is attributed to an enhancement in the TiO2 film conductivity arising from Nb5+ doping. Further, it is shown that this improvement holds over cm2 scale testing. This work demonstrates the importance of considering a range of factors, particularly conductivity, when designing tribovoltaic devices and may be adopted broadly for optimal electromechanical conversion.

通过表面电荷的产生将机械运动转化为电能的摩擦光伏装置已成为一项前景广阔的技术。为了最大限度地提高摩擦光伏器件的机电转换率，传统文献主要关注如何在工程上使接触材料之间的功函数相差较大。然而，最近的报道表明，除了功函数之外，温度等其他因素在机电转换中也起着关键作用。在这里，TiO2（一种廉价、丰富的氧化物材料）掺杂了 Nb5+，从而使摩擦光伏性能提高了 65 倍。这归因于掺杂 Nb5+ 提高了二氧化钛薄膜的导电性。此外，研究还表明，这种改进在厘米级测试中也能保持。这项工作表明，在设计摩擦光伏设备时，考虑一系列因素（尤其是导电性）非常重要，可广泛用于优化机电转换。

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引用次数: 0

Graphitization on Natural Biopolymer Shellac: Toward Substrate Independent Coatings and a Recyclable Flexible Heater 天然生物聚合物虫胶上的石墨化：实现与基底无关的涂层和可回收的柔性加热器

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-16 DOI: 10.1002/admi.202400301

Sai Kumar Pavar, Srinivasan Madapusi, Sushanta K. Mitra, Sanket Goel

Extraction of graphene and graphene derivatives from non-toxic, biocompatible, eco-friendly, and biodegradable resources with a one-step production process is a challenge. This work is the first attempt at the one-step graphenization of Shellac, a biopolymer derived from natural resources, achieved using direct laser patterning. Interestingly, the process highlights substrate independence by producing reduced graphene oxide (rGO) from multiple substrates, such as glass slides, Copper (Cu) adhesive tape, and overhead projector (OHP) plastic films. The produced rGO is fully characterized, and it is found that the sheet resistance is as low as 5.4., 24.65, and 8.4 Ω Sq⁻¹. on the glass slide, OHP plastic sheet, and Cu adhesive, respectively. Moreover, developing various logos on resin-coated ceramic tiles demonstrated the possibility of patterning desired conductive rGO patterns. Furthermore, a recyclable flexible rGO/Shellac heater is fabricated to validate its electrothermal performance (117.3 °C at 9.5 V) with foldable stability. The proposed one-step substrate independent two-material fabrication will revolutionize the process, potentially replacing conventional toxic routes of graphene production.

以一步法生产工艺从无毒、生物兼容、生态友好和可生物降解的资源中提取石墨烯和石墨烯衍生物是一项挑战。这项研究首次尝试利用激光直接图案化技术，对从自然资源中提取的生物聚合物--虫胶（Shellac）进行一步石墨烯化。有趣的是，该工艺通过从玻璃载玻片、铜（Cu）胶带和高射投影仪（OHP）塑料薄膜等多种基底生产还原型氧化石墨烯（rGO），突出了基底的独立性。对制备的 rGO 进行了全面表征，发现玻璃载玻片、OHP 塑料薄膜和铜胶粘剂的薄片电阻分别低至 5.4、24.65 和 8.4 Ω Sq-1。此外，在涂有树脂的陶瓷砖上绘制各种徽标也证明了绘制所需的导电 rGO 图案的可能性。此外，还制作了一种可回收的柔性 rGO/Shellac 加热器，以验证其电热性能（9.5 V 时温度为 117.3 ℃）和可折叠的稳定性。所提出的一步基底独立双材料制备方法将彻底改变石墨烯的制备过程，有可能取代传统的有毒石墨烯制备方法。

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引用次数: 0

A Thioether-Bridging Surface Modification of Polymeric Microspheres Offers Nonbiological Protein A-Mimetic Affinity for IgG (Adv. Mater. Interfaces 23/2024) 聚合物微球的硫醚桥接表面改性为 IgG 提供非生物蛋白 A 拟态亲和力（Adv. Mater. Interfaces 23/2024）

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-15 DOI: 10.1002/admi.202470058

Takanori Kishida

Bridging Surface Modification

Just like the kids spreading their nets in pairs, thioether-bridge-modified polymeric surfaces selectively capture immunoglobulin G (IgG). Furthermore, they exhibit buffer responsiveness and high-affinity binding to the IgG Fc region, acting as protein A ligands. The bridging surface modification approach and the improved understanding of protein interactions at bridged/non-bridged interfaces could be valuable in widespread bio-applications. More details can be found in the article 2301028 by Takanori Kishida.

桥接表面修饰就像孩子们成双成对地张开网一样，硫醚桥接修饰的聚合物表面也能选择性地捕捉免疫球蛋白 G (IgG)。此外，它们还表现出缓冲响应性和与 IgG Fc 区域的高亲和性结合，可作为蛋白 A 配体发挥作用。桥接表面修饰方法以及对桥接/非桥接界面上蛋白质相互作用的进一步了解，在广泛的生物应用中可能非常有价值。更多详情，请参阅作者 Takanori Kishida 发表的文章 2301028。

引用次数: 0

Masthead: (Adv. Mater. Interfaces 23/2024) 刊头：（Adv. Mater. Interfaces 23/2024）

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-15 DOI: 10.1002/admi.202470059

引用次数: 0

Enhanced Performance of CsPbBr3 Nanocrystals via Dual Passivation 通过双重钝化提高 CsPbBr3 纳米晶体的性能

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-15 DOI: 10.1002/admi.202400401

Yujiao Sun, Yongchao Cheng, Zijiang Yang, Ce Bian, Sheng Huang, Xiuquan Gu

Perovskite CsPbBr3 nanocrystals show excellent optical properties. However, the nanocrystals encounter a major challenge of poor stability. In this study, an effective approach is proposed for enhancing the stability of CsPbBr3 nanocrystals via a dual passivation strategy, where the dual passivation layer is composed of alumina (Al2O3) and polymer ethylene‐vinyl acetate (EVA). The Al2O3 coating on the CsPbBr3 surface is realized by in situ oxidation of trimethyl aluminum (TMA), which passivated the surface defects while blocking the intrusion of water and oxygen. The EVA film is formed by a solution method, which can further block the water and oxygen, and form the flexible composite with perovskite CsPbBr3 nanocrystals with enhanced stability toward water and heat. After soaking for 360 h and heating for 5 h, the photoluminescence (PL) intensity is higher than that without passivation. The polymer EVA packaging strategy provided CsPbBr3 with excellent extensibility and flexibility at 100% and 200% tensile rates, the PL intensity remains 91% and 88% of the initial intensity, which returns to the initial value after stretching. The unique dual‐protection structure significantly improves the water and thermal stability of the nanocrystals. The strategy might point out the direction for the future application of perovskites.

透镜态 CsPbBr3 纳米晶体显示出卓越的光学特性。然而，这种纳米晶体却面临着稳定性差的重大挑战。本研究提出了一种通过双重钝化策略提高 CsPbBr3 纳米晶体稳定性的有效方法，其中双重钝化层由氧化铝（Al2O3）和聚合物乙烯-醋酸乙烯酯（EVA）组成。CsPbBr3 表面的 Al2O3 涂层是通过三甲基铝 (TMA) 的原位氧化实现的，在钝化表面缺陷的同时阻止了水和氧气的侵入。通过溶液法形成的 EVA 膜可进一步阻隔水和氧气，并与过氧化物 CsPbBr3 纳米晶体形成柔性复合材料，增强了对水和热的稳定性。在浸泡 360 小时和加热 5 小时后，光致发光（PL）强度比未钝化时更高。聚合物 EVA 封装策略为 CsPbBr3 提供了出色的延伸性和柔韧性，在 100% 和 200% 的拉伸率下，光致发光强度分别保持在初始强度的 91% 和 88%，拉伸后又恢复到初始值。独特的双重保护结构大大提高了纳米晶体的水稳定性和热稳定性。该策略或许能为未来过氧化物晶石的应用指明方向。

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引用次数: 0

Tuning the Permeation Properties of Poly(1‐trimethylsilyl‐1‐propyne) by Vapor Phase Infiltration Using Trimethylaluminum 使用三甲基铝通过气相渗透调节聚（1-三甲基硅基-1-丙炔）的渗透特性

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-14 DOI: 10.1002/admi.202400171

Jonathan Jenderny, Nils Boysen, Jens Rubner, Frederik Zysk, Florian Preischel, Teresa de los Arcos, Varun Raj Damerla, Aleksander Kostka, Jonas Franke, Rainer Dahlmann, Thomas D. Kühne, Matthias Wessling, Peter Awakowicz, Anjana Devi

Vapor phase infiltration (VPI) has emerged as a promising tool for fabrication of novel hybrid materials. In the field of polymeric gas separation membranes, a beneficial impact on stability and membrane performance is known for several polymers with differing functional groups. This study for the first time investigates VPI of trimethylaluminum (TMA) into poly(1‐trimethylsilyl‐1‐propyne) (PTMSP), featuring a carbon–carbon double bond as functional group. Saturation of the precursor inside the polymer is already attained after 60 s infiltration time leading to significant densification of the material. Depth profiling proves accumulation of aluminum in the polymer itself, but a significantly increased accumulation is visible in the gradient layer between polymer and SiO2 substrate. A reaction pathway is proposed and supplemented by density‐functional theory (DFT) calculations. Infrared spectra derived from both experiments and simulation support the presented reaction pathway. In terms of permeance, a favorable impact on selectivity is observed for infiltration times up to 1 s. Longer infiltration times yield greatly reduced permeance values close or even below the detection limit of the measurement device. The present results of this study set a strong basis for the application of VPI on polymers for gas‐barrier and membrane applications in the future.

气相渗透（VPI）已成为制造新型混合材料的一种前景广阔的工具。在聚合物气体分离膜领域，已知几种具有不同官能团的聚合物对稳定性和膜性能具有有利影响。本研究首次对三甲基铝（TMA）与聚（1-三甲基硅基-1-丙炔）（PTMSP）的 VPI 进行了研究，聚（1-三甲基硅基-1-丙炔）以碳碳双键为官能团。在 60 秒的浸润时间后，聚合物内部的前驱体已达到饱和，从而使材料显著致密化。深度剖面分析表明，铝在聚合物中积累，但在聚合物和二氧化硅基底之间的梯度层中积累明显增加。提出了一种反应途径，并通过密度泛函理论（DFT）计算加以补充。实验和模拟得出的红外光谱都支持所提出的反应途径。就渗透率而言，浸润时间不超过 1 秒时对选择性有有利影响，浸润时间越长，渗透率值大大降低，接近甚至低于测量装置的检测极限。目前的研究结果为将来在气体阻隔和膜应用的聚合物上应用 VPI 奠定了坚实的基础。

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引用次数: 0

Long-Range Non-Coulombic Coupling at the LaAlO3/SrTiO3 Interface LaAlO3/SrTiO3 界面的长程非库仑耦合

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-13 DOI: 10.1002/admi.202400223

Aditi Nethwewala, Kitae Eom, Muqing Yu, Ranjani Ramachandran, Chang-Beom Eom, Patrick Irvin, Jeremy Levy

The LaAlO₃/SrTiO₃ interface hosts a plethora of gate-tunable electronic phases. Gating of LaAlO₃/SrTiO₃ interfaces is usually assumed to occur electrostatically. However, increasing evidence suggests that non-local interactions can influence and, in some cases, dominate the coupling between applied gate voltages and electronic properties. Here, quasi-1D ballistic electron waveguides are sketched at the LaAlO₃/SrTiO₃ interface as a probe to understand how gate tunability varies as a function of spatial separation. Gate tunability measurements reveal the scaling law to be at odds with the pure electrostatic coupling observed in traditional semiconductor systems. The non-Coulombic gating at the interface is attributed to a long-range nanoelectromechanical coupling between the gate and electron waveguide, possibly mediated by the ferroelastic domains in SrTiO₃. The long-range interactions at the LaAlO₃/SrTiO₃ interface add unexpected richness and complexity to this correlated electron system.

LaAlO3/SrTiO3 界面存在大量可门控调节的电子相。LaAlO3/SrTiO3 界面的门控通常被认为是静电发生的。然而，越来越多的证据表明，非局部相互作用会影响外加栅极电压与电子特性之间的耦合，并在某些情况下起主导作用。在此，我们在 LaAlO3/SrTiO3 界面上勾勒出准一维弹道电子波导，作为了解栅极可调谐性如何随空间隔离而变化的探针。栅极可调谐性测量结果表明，其缩放规律与传统半导体系统中观察到的纯静电耦合不一致。界面上的非库仑门控归因于栅极和电子波导之间的长程纳米机电耦合，这可能是由 SrTiO3 中的铁弹性域介导的。LaAlO3/SrTiO3 界面的长程相互作用为这一相关电子系统增添了意想不到的丰富性和复杂性。

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引用次数: 0

Tuneable Wetting of Fluorine‐Free Superhydrophobic Films via Titania Modification to Enhance Durability and Photocatalytic Activity 通过钛改性实现无氟超疏水薄膜的可调润湿性，从而提高耐久性和光催化活性

IF 5.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces

Pub Date : 2024-08-13 DOI: 10.1002/admi.202400519

Julie Jalila Kalmoni, Christopher S. Blackman, Claire J. Carmalt

Superhydrophobic photocatalytic self‐cleaning films are fabricated via aerosol‐assisted chemical vapor deposition (AACVD). First, superhydrophobic/SiO2 polymer films consisting of a combination of fatty acids, polydimethylsiloxane (PDMS) and SiO2 nanoparticles are deposited which displayed static water contact angles >160° and maintained superhydrophobicity after 300 tape peel cycles. The AACVD process is used to achieve a highly textured morphology required for superhydrophobicity. The surface properties are then modified by depositing a thin layer of TiO2 on the superhydrophobic coating via AACVD of titanium isopropoxide (TTIP). The deposited films are hydrophobic/superhydrophobic depending on the concentration of TTIP used in the deposition process. The resulting hybrid films exhibit enhanced photocatalytic activity relative to the uncoated superhydrophobic film, maintained hydrophobicity after exposure to toluene, and tolerated pencil hardness of up to “6H”. This multi‐layered approach allows to easily tune the wettability of the superhydrophobic film, which is challenging to do when the superhydrophobic and TiO2 precursor are deposited as a single one‐pot precursor.

通过气溶胶辅助化学气相沉积（AACVD）制造出了超疏水光催化自清洁薄膜。首先，沉积出由脂肪酸、聚二甲基硅氧烷（PDMS）和二氧化硅纳米粒子组合而成的超疏水/二氧化硅聚合物薄膜，该薄膜显示出静态水接触角 160°，并在 300 次胶带剥离循环后保持超疏水特性。AACVD 工艺用于实现超疏水所需的高纹理形态。然后，通过异丙醇氧化钛 (TTIP) 的 AACVD 在超疏水涂层上沉积一薄层 TiO2，从而改变其表面特性。沉积薄膜的疏水性/超疏水性取决于沉积过程中使用的 TTIP 浓度。与未涂层的超疏水薄膜相比，混合薄膜具有更强的光催化活性，在接触甲苯后仍能保持疏水性，并能承受高达 "6H "的铅笔硬度。这种多层方法可以轻松调节超疏水薄膜的润湿性，而将超疏水和二氧化钛前驱体作为单一的单层前驱体沉积时，要做到这一点就很困难了。

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引用次数: 0

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