APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 5
·1-9
·
IF 2.8
Liao Gengcheng,Huang Zongyu,Ren Long,Qi Xiang
Directly growing oxides on the surface of liquid metal (LM) offers a novel strategy to effectively integrate flexible conductive substrate with semiconductive layer for functional devices including photodetectors. Gallium-based liquid metal with native oxides surface typically demonstrates such LM/semiconductor construction with attractive photoelectric responsivity, however, the relevant photo-electrode lacking efficient response to visible light due to the wide band-gap of Ga-oxides. This paper presents a straightforward fabrication route containing printing and in-situ reaction growing for the preparation of liquid metal functionalized with narrow-band gap semiconductor ( e.g. , Cu 2 O). The resulting LM/metal-oxides heterostructure exhibits a well-matched liquid–solid contact and good interfacial charge transfer between the soft conductive substrate and active surface components. Characterizations including scanning electron microscopy (SEM), Raman spectroscopy, and UV–visible absorption spectroscopy confirm the successful preparation of the Cu 2 O thin layer with an expanded absorption spectrum range. The as-fabricated photoelectrode consisted of LM-Cu 2 O, through photoelectrochemical (PEC) tests, presents fast photo-responsibility under the simulated sunlight illumination and self-powered capability. Specifically, the LM-Cu 2 O based PEC photodetector shows maximum photoresponsivity of − 70 μA/W and photocurrent density of − 9.5 μA/cm 2 at a bias voltage of 0 V. Our results provide a general method for the design and manufacture of novel photodetectors.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Electronic Materials
·
2022
·Vol. 8
·期 12
·2200620
·
IF 7.633
Guoliang Xiong,Gang Zhang,Xiaozhan Yang,Wenlin Feng
A novel 2D layered material Ti 3 C 2 T x (MXene) is favored by researchers in the application field of optoelectronics due to its tunable work function, great light transmittance, and excellent electrical conductivity. In this work, Ti 3 C 2 T x /n-germanium (MXene/n-Ge) Schottky heterostructures are fabricated and investigated. Schottky contacts of MXene with n-Ge are identified by ultraviolet photoelectron spectroscopy (UPS). Based on the MXene/n-Ge Schottky junctions, an ultrafast, broadband, and self-powered photodetector is demonstrated and studied. The MXene/n-Ge device exhibits excellent photoresponse from ultraviolet to near-infrared light illumination. In particular, it shows an excellent on/off ratio (≈10 4 ), a high responsivity (3.14 A/W), a larger specific detectivity (2.14 × 10 11 Jones), and an ultrafast response speed (t rise of 1.4 µs and t decay of 4.1 µs). Moreover, the MXene/n-Ge Schottky heterostructure photodetector also shows excellent low-temperature work characteristics of 73 K. It is believed that this work will attract more researchers’ attention to MXene in the field of optoelectronic devices.
研究领域:
材料科学
·
光电设备
·
半导体物理
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Zichao Lian,Ying Tao,Yunni Liu,Yang Zhang,Qiong Zhu,Guisheng Li,Hexing Li
The photoelectrocatalytic (PEC) technique has attracted much attention to getting clear energy and environmental purification. Simultaneous reactions of solar energy generation could be used to apply for practical applications to maximize the functionality of reactor systems. Herein, we crafted a self-driving photoelectrocatalytic reactor system, comprising platinum (Pt) modified p-Si nanowires (Pt/Si-NWs) as a photocathode and TiO2 nanotube arrays (TiO2–NTAs) as a photoanode for synergistic H2 evolution and water purification, respectively. Hydrogen evolution in the cathode chamber and environmental remediation in the anode chamber were achieved with the aid of appropriate bandgap illumination and self-built bias voltage. The mismatch of Fermi levels between TiO2–NTAs and Si-NWs reduced the recombination rates of photoinduced electrons and holes through the formation of Z scheme and inner electric filed. The synergistic PEC reactions exhibited much higher activities than those achieved using other systems so far. This basic principal could be applied for fabricating other PEC reactors in photoelectro conversion devices and be established as design guidelines for reactors to maximize the PEC performance.
研究领域:
环境科学
·
材料科学
·
能源科学
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Haijia Zhao,Jiakang Qu,Fengyin Zhou,Zhuqing Zhao,Xiang Chen,Hongwei Xie,Qiushi Song,Dihua Wang,Huayi Yin
High-temperature molten salts are excellent solvents for materials synthesis, because they not only provide a water- and oxygen-free environment but also accelerate the reaction rate by enhancing the mass/electron transport in a liquid medium. Herein, a self-driven salt-thermal reduction approach is reported for preparing low-valence oxides and their compounds without using any reducing agent or toxic chemical. The molten-salt medium drives the reduction of oxides to suboxides and oxygen (e.g., from CuO to Cu2O) and acts as a capping agent to prevent the growth of oxides. At the same time, the AgCl–Cu2O hybrid is prepared from microsized CuO and AgCl. The prepared AgCl–Cu2O hybrids show superior visible-light photocatalytic activity toward the photodegradation of methyl orange in 10 min with a degradation rate of up to 98.4%. Besides the AgCl–Cu2O hybrid, a library of metal oxides can be prepared using eco-friendly feedstocks and chemicals.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xuyao Huo,Xinkun Chen,Zhen Cao,Xueye Chen
Due to the illegal discharge of organic wastewater, the amount of oil-containing water is increasing. Therefore, how to quickly and effectively carry out oil–water separation has become an urgent problem. Inspired by the gutter structure of ginkgo leaves and the conical structure of pine needles, we fabricated a bionic coupled cone-gradient groove (BCGG) using micro–nano precision 3D printing technology. Under the combined effect of Laplace pressure and capillary force, the surface can perform oil–water separation spontaneously, efficiently and rapidly, with the maximum transport speed reaching 55.2 mm s−1, which is approximately 11 times that of the traditional conical structure. The structure can perform anti-gravity transport of oil droplets in different environments such as gas phase, liquid phase and gas–liquid phase, while maintaining excellent transport performance for large volumes of oil droplets. This study has certain reference significance for microdroplet manipulation, liquid separation and transportation.
研究领域:
材料科学
·
表面工程
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Qi Chai,Bo Yang,XiuMin Li,Fengfeng Gao,Xiaogang Hao
A nickel hydroxide/carbon black/polyvinylidene fluoride (Ni(OH) 2 /CB/PVDF) film was coated on a graphite plate substrate and used for the selective and efficient extraction of W(VI) using self-driven film adsorption. The excellent self-driven adsorption performance of Ni(OH) 2 /CB/PVDF film for W(VI) was demonstrated by the comparison of the experimental performance of film adsorption and electrochemically switched ion exchange (ESIX) process. In the Ni(OH) 2 /CB/PVDF film, the adsorption of W(VI) by Ni(OH) 2 was achieved through the ligand exchange reaction with W(VI) and abundant hydroxyl groups, which ensured the self-driven performance. The adsorption capacity of the self-driven Ni(OH) 2 /CB/PVDF film for W(VI) under neutral conditions could reach up to 37.53 mg·g −1 after 12 h. Moreover, the adsorption kinetics and adsorption thermodynamics showed that the adsorption of W(VI) on Ni(OH) 2 /CB/PVDF films was more in line with the pseudo-second-order kinetic model, and the adsorption was heat-absorbing and spontaneous. After seven cycles of adsorption/desorption, the adsorption capacity of W(VI) by Ni(OH) 2 /CB/PVDF film could reach 79.37 % of its initial value, which showed good adsorption/desorption cycle performance. Moreover, Ni(OH) 2 /CB/PVDF films showed high selectivity for W(VI) when WO 4 2− coexisted with Cl − , NO 3 – , and SO 4 2− , respectively. This study confirmed that the self-driven Ni(OH) 2 /CB/PVDF film had efficient and stable adsorption performance for W(VI), which can be regarded as a promising method for the selective adsorption of W(VI) from aqueous solution.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Matter
·
2022
·
IF 19.967
Xin Chen,Cong Wu,Yinjie Lv,Chang Zhang,Xinshui Zhang,Lu Nie,Yue Zhang,Lianqi Zhao,Chen Huang,Wei Liu
Lithium extraction from seawater/brine has attracted increasing attention because of its abundant reserves. However, most extraction technologies require extra energy consumption to enrich lithium in the solution. Here, we develop a self-driven lithium extraction method by a composite asymmetric nonwoven (CAN) with directional liquid transport functionality. CAN consists of one hydrophobic fibrous layer containing Li-ion sieve particles and one hydrophilic fibrous layer. As a result, a solution containing various types of ions can spontaneously transport through CAN from the hydrophobic to the hydrophilic layer, absorbing Li ions in the hydrophobic layer. CAN exhibits high Li + selective adsorption capacity, good chemical stability, easy recyclability, and long service life. Importantly, extremely low energy of ∼1.631 J is consumed on extracting 1 mg lithium ion by our method using CAN. This work opens a great promise of saving huge energy costs on lithium extraction from seawater or salt lakes.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 11
·2599
·
IF 3.1
Xiao Liu,Xiangshun Geng,Guanhua Dun,Zeshu Wang,Jingbo Du,Dan Xie,Yi Yang,Tianling Ren
Recently, the combination of two-dimensional (2D) materials and perovskites has gained increasing attention in optoelectronic applications owing to their excellent optical and electrical characteristics. Here, we report a self-driven photodetector consisting of a monolayer graphene sheet and a centimeter-sized CH3NH3PbBr3single crystal, which was prepared using an optimized wet transfer method. The photodetector exhibits a short response time of 2/30 μs by virtue of its high-quality interface, which greatly enhances electron–hole pair separation in the heterostructure under illumination. In addition, a responsivity of ~0.9 mA/W and a detectivity over 1010Jones are attained at zero bias. This work inspires new methods for preparing large-scale high-quality perovskite/2D material heterostructures, and provides a new direction for the future enhancement of perovskite optoelectronics.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zimo Lou,Ludi Song,Xuanlong Zhang,Xiaofei Wen,Dong Cheng,Jianming Yu,Xinhua Xu
Exogenous ferrous ion dosing allows depassivation of aged zerovalent iron (ZVI) for industrial wastewater treatment, while sustaining the persistent existence of Fe(II) species for continuous depassivation throughout decontamination remains challenging. To tackle this dilemma, pre-oxidized microscale ZVI (poZVI bm ) is proposed via ball milling with peroxydisulfate (PDS) solids, for tailoring an “continuous self-driven depassivation” scenario with Fe 0 /Fe(II) symbiosis. The poZVI bm exhibits a 4.4 ∼ 19.0 times higher equilibrated adsorption capacity for hexavalent chromium (Cr(VI)) than the referenced ball milled ZVI (ZVI bm ) and other benchmarked mZVI composites (e.g. oxalated ZVI bm , sulfidized ZVI bm , and nanoscale ZVI), following a chemisorption-reduction process. It also demonstrates a 4.5 ∼ 18.7 folds faster surface area-normalized removal rate for nitrobenzene (NB) than all these counterparts, mediated by reductive transformation. Cr(VI) removal and NB reduction depend on the dissolved and surface-sorbed Fe(II), respectively, which can be optimized by regulating pre-oxidation degree of poZVI bm . The “continuous self-driven depassivation” of poZVI bm starts with the local microenvironment acidification due to the adsorption of abundant dissolvable Fe(II) over surface-located Fe(III), which drives continuous dissolution of Fe 0 core to create more reactive Fe(II), and therefore repeats the above procedure. Owing to wide pH adaptability (pH 3 ∼ 9) and impressive corrosion behavior of poZVI bm , these findings inspire the intimate integration of Fe 0 /Fe(II) component for high-efficient remediation of multicomponent industrial wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2019
·Vol. 7
·期 10
·1900023
·
IF 7.125
Liang Chen,Wei Tian,Liangliang Min,Fengren Cao,Liang Li
Designing Si nanowire-based heterostructures provides a promising path to construct self-driven and broadband photodetectors, which are the key components for optoelectronic systems. Herein, the first fabrication of a p-CuIn 0.7 Ga 0.3 Se 2 nanoparticles/n-Si nanowire array core–shell structure through a simple two-stage process—spin coating and selenization treatment—and its integration into a self-driven photodetector are reported. The heterojunction photodetector is sensitive to broad wavelength range from UV light to visible and near-infrared light, with high detectivity of up to 1.6 × 10 13 Jones, large responsivity of 0.33 A W −1 , and an ultrafast response speed of 823/356 µs at zero bias. Additionally, this core–shell nanostructure exhibits good air stability and strong ability to detect weak light sources such as fluorescent lamp and lighter. The superior performance can be attributed to the strong light absorption of both Si and CuIn 0.7 Ga 0.3 Se 2 , the unique vertically standing core–shell structure, and effective photogenerated carriers' separation and transportation at the heterojunction interface.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Mohammad Zaki,Carsten Prinz,Bastian Ruehle
The recent emergence of self-driving laboratories (SDL) and material acceleration platforms (MAPs) demonstrates the ability of these systems to change the way chemistry and material syntheses will be performed in the future. Especially in conjunction with nano- and advanced materials which are generally recognized for their great potential in solving current material science challenges, such systems can make disrupting contributions. Here, we describe in detail MINERVA, an SDL specifically built and designed for the synthesis, purification, and in line characterization of nano- and advanced materials. By fully automating these three process steps for seven different materials from five representative, completely different classes of nano- and advanced materials (metal, metal oxide, silica, metal organic framework, and core–shell particles) that follow different reaction mechanisms, we demonstrate the great versatility and flexibility of the platform. We further study the reproducibility and particle size distributions of these seven representative materials in depth and show the excellent performance of the platform when synthesizing these material classes. Lastly, we discuss the design considerations as well as the hardware and software components that went into building the platform and make all of the components publicly available.
研究领域:
材料科学
·
化学工程
·
人工智能
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Rong-Kun Liu,Jia Jia,Qian Sun,Hong Zhao,Jie-Xin Wang
Janus-microswimmers, as efficient self-propelled materials, have garnered considerable attention, particularly for their potential applications in nonagitated liquids, like natural aquatic systems. However, current microswimmers face challenges such as unconfined diffusion areas and small-scale production. Herein, we propose a scalable spray-drying-assisted strategy for the efficient production of Janus-microswimmers. The Janus structures are fabricated by the assembly of polystyrene microparticles and SiO2/polydopamine nanoparticles in the microdroplets, and the single-side propulsion microswimmers are subsequently obtained by loading MnO2. By catalyzing the decomposition of H2O2 to produce oxygen, the speed of these microswimmers is much faster than those of other reported continuous-motion microswimmers. Interestingly, the microswimmers are self-propelled and gather in the proximity of water surface, and the extent of the confined area is controllable. This range-confined motion, distinct from the traditional irregular motion, offers a novel perspective on the behavioral patterns of Janus-microswimmers. Furthermore, by in situ loading of Fe3O4 nanoparticles, the microswimmers can be sensitively induced and controlled in their movement direction by a magnetic field. As a proof-of-concept, by harnessing the hydrophobic components of the microswimmers, we successfully recover floating oil films in a simulated natural water body, offering a promising approach for the remediation of petroleum pollution in the environment.
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）