Article
Chemistry, Physical
Lan Yang, Libing Qian, Dawei Cao, Xu Li, Jiacheng Guo, Haoliang Zhang, Dongwei Zhang, Chunqing He
Summary: In this study, big crystals of HKUST-1 were synthesized under solvothermal conditions, and fine powders were ground from them and directly synthesized. The specific surface areas of the powders were found to be smaller than that of the big crystals, indicating micropore collapse. PALS analysis showed two different o-Ps lifetimes in the powders, while only one o-Ps lifetime was observed in the big crystals. Continuous positron lifetime analysis also supported this finding. These abnormal PALS results can be explained by the collapse of large surface pores and the formation of a dense layer on the surfaces of the fine powders, demonstrating the usefulness of PALS for studying the pore structures of MOFs.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Dan Villamanca, Marie Colin, Karin Ching, Aditya Rawal, Yanfang Wu, Dong Jun Kim, Marc Dubois, Sam Chen
Summary: In this study, graphene oxyfluoride films were prepared by gas-phase fluorination of graphene oxide layers, and the composition and stability of the films were successfully controlled. The resulting films exhibited stable morphology and structure, as well as tunable water stability and water vapor permeability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Shuang Tang, Xue-Lian Hu, Yang-Sen Xu, Wen-Wu Shi, Xin-Zhong Wang, Yu-Xiang Yu, Wei-De Zhang
Summary: Breaking the symmetry of polymeric carbon nitride (CN) skeleton by heteroatomic substitution can induce an in-plane polar electric field, thus promoting the migration and separation of photoexcited charge carriers. This research demonstrates that embedding a pyridine ring in the CN skeleton can enhance the optical absorption and photoinduced charge migration efficiency, resulting in improved photocatalytic performance and the ability to utilize sunlight more efficiently.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jie Li, Qiaoru An, Haisheng Fang
Summary: In this study, a particle transport model based on MC simulation in COMSOL was proposed to analyze the effects of working conditions and geometry parameters on deposition uniformity in magnetron sputtering. It was found that increasing pressure and decreasing temperature can improve deposition uniformity. The influence of geometry parameters on deposition efficiency and uniformity was also investigated, and it was found that the closer the zone with high particle deposition is to the substrate center, the higher the deposition efficiency, while the greater the particle concentration difference on the substrate, the lower the deposition uniformity. Moreover, optimized parameters were determined to maximize both the deposition efficiency and uniformity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Shiqiang Wang, Huiyun Jiang, Junjie Feng, Yan Jin, Fei An, Liang Zhu, Anshan Xiao
Summary: This study develops a bottom-up self-assembly strategy to construct a metal-dielectric-metal system for efficient detection of polycyclic aromatic hydrocarbons (PAHs). The hierarchical system exhibits localized enhanced electromagnetic field region and effective trapping ability for PAHs.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuqi Zhou, Yuhua Huang, Jinming Li, Weishan Lv, Fulong Zhu
Summary: Scientists have found through simulation studies that the presence of chemical adsorbates on the surface of SiC during diamond polishing reduces material removal, while H2O2 solution can effectively reduce adhesive bonds and structural damage, improving the polishing process.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hua-Bin Yuan, Jin Cheng, Desheng Sha, ManMan Zhao, Tieling Xing, Guoqiang Chen
Summary: This study successfully developed a mild superhydrophobic modification technique for cotton fabric by incorporating ZIF-8 and curcumin, resulting in the creation of SHCZC material with excellent performance and multiple functionalities. The SHCZC material demonstrated superhydrophobicity, stability, antibacterial properties, and fouling resistance, among others, expanding its potential applications.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Erhui Zhang, Mengqi Yang, Yongsheng Zhou, Xiang Ke, Jing Tang, Jiahao Guo, Zirong Li
Summary: This study successfully fabricated a graphene-based porous membrane and utilized its synergistic advantages with silicon-oxy-carbide (SiOC) to prepare a flexible all-solid-state symmetric supercapacitor (ASSSs). Compared to traditional capacitors, this device exhibits higher power density and energy density, with potential applications in flexible energy storage devices.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhiheng Hao, Qian Wang, Peng Chen, Peng Xie, Zengxi Wei, Shuangliang Zhao
Summary: This study demonstrates a methodology to describe the catalytic activity of hydrogen peroxide on the metal doped surface of Pd(1 1 1) by constructing a structural descriptor. The descriptor enables the discrimination of catalyst performance, providing novel insights for the screening of high-performance surface alloy catalysts and the development of catalyst descriptor studies.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Wanli Li, Yitian Li, Lingying Li, Haidong Yan, Takeo Minari
Summary: This study proposes a hybrid ink containing Cu/Ni complexes and Cu particles for direct printing of high-performance Cu-Ni alloy traces. The nanoparticles formed by the decomposition of the complexes effectively bridge the interfaces among Cu particles, resulting in printed traces with low resistivity and excellent mechanical stability. The obtained Cu-Ni alloy traces exhibit multiscale core-shell structures and show strong potential for use in advanced electronics manufacturing.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Nhat-Minh Phung, Minh-Tan Ha, Si-Young Bae, Soonil Lee, Tae-Joo Park, Se-Hun Kwon, Seong-Min Jeong
Summary: This study proposes a growth kinetics model for ZrO2 in atomic layer deposition (ALD) using a mixed alkylamidocyclopentadienyl zirconium precursor. The model is based on experimental data and evaluates film growth behavior using reactor-scale simulation. The study finds that the adsorption of Cp-Zr molecules is hindered by the bulkiness of remaining ligands on adsorbed species. The hindrance effect is significant at temperatures between 150°C and 250°C, but decreases with increasing temperature and disappears at 300°C. The research provides valuable insights for optimizing ALD deposition processes of high-k metal oxides.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Dhandayuthapani Thiyagarajan, Shichen Li, Sivaselvam Subramani, Arun Thirumurugan, Bong-Kee Lee
Summary: Metal-organic frameworks (MOFs) are explored as a precursor for producing porous metal oxide-supported nitrogen-doped carbon nanomaterials. In this study, nanocrystalline titanium dioxide-supported nitrogen-doped carbon nanostructures (TiO2@NC) were fabricated from a titanium MOF and showed efficient removal of tetracycline (TC) in aqueous solutions. The TiO2@NC nanospheres exhibited high adsorption capacity, broad pH range suitability, and excellent stability. The adsorption process was influenced by nitrogen sites, surface area, and porous sphere morphology.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jie Yang, Ren Wang, Jinsheng Sun, Yuanzhi Qu, Han Ren, Zhiliang Zhao, Pingquan Wang, Yingying Li, Luman Liu
Summary: This study successfully synthesized P-LDH composites with partially intercalated and partially exfoliated structures by in-situ polymerization. The P-LDH showed excellent thermal stability and low viscosity effect, which significantly reduced the filtrate loss of drilling fluids under ultrahigh-temperature and high-salt conditions.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qingquan Xue, Bingtao Song, Qian Feng, Zhuofan Yu, Kaiwei Hu, Ye Yang, Xiaofeng Shen
Summary: In this study, the growth of magnetic recyclable FeOOH nanoneedles on biochar surface was achieved for efficient treatment of antibiotic wastewater. The presence of H2O2 promoted the recycling of Fe3+/Fe2+, leading to enhanced photocatalytic and photo-Fenton catalytic performance. The potential degradation mechanism and pathway were investigated, and the magnetic FeOOH nanoneedles demonstrated remarkable reusability and cycling capability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qing Lu, Shuli Wei, Guangchao Yin, Peikang Bai, Yuxin Li
Summary: Dy-doped hexagonal boron nitride nanosheets were prepared through high-temperature reduction reactions. The nanosheets exhibited room-temperature ferromagnetism and semiconductor conductivity. The doping of Dy transformed the nanosheets from insulators to magnetic semiconductors.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
