Article
Chemistry, Physical
Yifan Liu, Fei Lu, Chang Liu, Qingyun Li, Yu Li, Yuanfeng Xu
Summary: This study explores the waveguide properties of graphene integrated with LiNbO3 and finds significant enhancements in effective index and coupling efficiency upon graphene coverage. The results demonstrate the feasibility of graphene as an electrode and lay the foundation for future research on high-speed optical modulators.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Wen-Bin Wu, Julia Kasiuk, Janusz Przewoznik, Czeslaw Kapusta, Ivan Svito, Dang Thanh Tran, Hung Manh Do, Hung Manh Dinh, Johan Akerman, Thi Ngoc Anh Nguyen
Summary: We studied the magnetoresistance mechanisms in a Pt/[Co/Pt]x5 film consisting of a ferromagnetic [Co/Pt]x5 layer with strong perpendicular magnetic anisotropy and a nonmagnetic Pt layer with strong spin-orbit coupling. Two competing contributions, sin2 theta and cos4 theta, were revealed in the electrical resistance of the film at different angles and magnetic fields, corresponding to the out-of-plane rotation of the magnetization M(theta) perpendicularly to the electric current. The cos4 theta contribution is attributed to the anisotropic magnetoresistance of the ferromagnetic layer, while the sin2 theta contribution is mainly associated with the spin Hall magnetoresistance originating from the Pt layer. The strong influence of the electric current on the magnetization of the film is of high relevance for magnetic memory design technologies.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Wan-Ying Wang, Gui-Chang Wang
Summary: In this study, the catalytic activity and carbon deposition resistance of 14 Ni3X-type alloy catalysts were calculated using density functional theory. Ni-based catalysts with high activity and stability, such as Ni3V, Ni3Cr, Ni3Mn, Ni3Nb, and Ni3Mo, were selected and considered to have high application potential. Measurement of catalyst activity and stability through descriptors was explored, and the superiority of Ni3Mo catalytic performance was further verified.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Tangchun Wang, Binbin Sun, Weijie Wang, Jinchen Dong, Jianbo Qu, Zhiliang Zhang
Summary: In this study, a novel SERS substrate was fabricated by utilizing gelatin gels and silver nanoparticles. The substrate exhibited excellent sensitivity and detection capability, being able to detect low concentrations of fungicides in lake water. It is expected to serve as a fast and simple method for highly sensitive detection of hazardous contaminants and fungicides in aquaculture fields.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuan He, Chengwei Sun, Shidong Fang, Muhammad Shaban, Changlun Chen
Summary: A facile NTP treatment was conducted to modify NiCoLDH nanowires, introducing N-doping and oxygen vacancies for improved electrochemical performance. The optimized electrode (P-NiCoNW/CC-150) showed outstanding capacitance performance and excellent cycling stability. An asymmetric supercapacitor device assembled with the electrodes exhibited high energy density.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Younghwan Lee, Se Hyun Kim, Hyun Woo Jeong, Geun Hyeong Park, Jaewook Lee, Young Yong Kim, Min Hyuk Park
Summary: This study investigates the structural, chemical, and electrical properties of Hf0.5Zr0.5O2 under different electrode conditions. The results show that Hf0.5Zr0.5O2 with a Mo electrode exhibits higher remanent polarization and a higher fraction of ferroelectric orthorhombic phase compared to Hf0.5Zr0.5O2 with a TiN electrode. Additionally, the concentration of oxygen vacancies in Hf0.5Zr0.5O2 with a Mo electrode is significantly lower, explaining its wake-up free behavior.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Cheng-zhao Jin, Meng-yuan Liu, Cai-yun Wang, Xin-an Yang, Li-li Yao, Wang-bing Zhang
Summary: The difference in bandgap structure results in better charge separation performance of crystalline/amorphous heterojunctions. Adjusting the facets at the material contact interface can further improve the charge separation performance of such heterojunctions. This article successfully synthesized three novel ZnO/amorphous Bi2WO6 heterojunctions and demonstrated their efficient carrier separation characteristics and excellent photocatalytic performance through photoelectric testing.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuanmeng Zhang, Tingting Wang, Xiaohu Zhang, Ya Sun, Guozhi Fan, Guangsen Song, Bo Chai
Summary: This study developed a porous pie-like nitrogen-doped biochar catalyst for the degradation of sulfamethoxazole. The catalyst exhibited excellent catalytic activity and high degradation efficiency for various organic pollutants in different conditions and water environments.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhiqian Li, Xue Yang, Qi Fang, Tao Cheng, Zining Zhang, Hongjuan Zhang, Jing Tang
Summary: In this study, CuO nanosheets were modified by in-situ boron doping to enhance the electroreduction performance of carbon dioxide. The optimized B-CuO NS catalyst exhibited a high faradaic efficiency of 54.78% for C2+ production at a specific potential. This work provides a rational design strategy for developing efficient catalysts for the electroreduction of CO2.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Woo Tae Jun, Ji Young Hwang, Hyung-Kyu Lim, Duck Hyun Youn
Summary: A composite catalyst of IrOx nanoparticles dispersed in CeO2 support (IrOx/CeO2) was prepared for oxygen evolution reaction (OER), showing excellent performance and stability. The lower-valance Ir3+ species near the catalyst surface served as active sites for OER.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jie Yang, Xinyu Li, Yujia Xu, Lin Chen, Shan Wang, Shan Ren, Junjiang Zhu
Summary: The formation of reaction intermediates on a copper catalyst during selective catalytic reduction of nitrogen oxides was studied. The results showed that ammonia adsorbed on LCu and B sites exhibited stronger reactivity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Shikhgasan Ramazanov, Farid Orudzhev, Gaji Gajiev, Vladimir Holcman, Robert Saraiva Matos, Henrique Duarte da Fonseca Filho, Stefan Talu, Daud Selimov
Summary: A heterostructure BiFeO3/TiO2(Nt)Ti (BFOT) with p-type conductivity in the BFO film and n-type conductivity in the nanotubes was obtained by the atomic layer deposition method. The redistribution of Fe/Ti atoms and the formation of Aurivillius intermediate layered phase and local charge capture centers were observed after thermal treatment. The ferroelectric switching and the transition of the memristive structure were affected by the lateral displacement of the sample and the properties of the periodic signal. The compensation of static charge during resistive switching and the acceleration of structure restructuring with increasing voltage were found to influence the transport properties of the material. The correlation between surface static charge and piezopotential was shown through the analysis of piezoresponse force microscopy, electrostatic force microscopy, and fractal/multifractal dynamics. This new methodology can contribute to the understanding of the resistive switching processes in ferroelectric/semiconductor memristive structures.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yesol Lee, Jueun Koh, Hojung Ahn, Hongje Jang, Young Jin Sa
Summary: In this study, the electrocatalytic properties of palladium-tellurium binary compounds with different surface compositions were compared. It was found that the compound with a higher surface Te/Pd ratio exhibited higher H2O2 selectivity but lower activity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Juan Zhang, Bo Jin, Rufang Peng
Summary: The addition of Ni-Co-pzdc catalyst effectively improves the thermal decomposition properties of ammonium perchlorate (AP). Various characterization tools were used to investigate the morphological and structural features of the resulting materials. The thermal decomposition behaviors of the two products were studied, and the results showed excellent catalytic activities for both substances.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Wangqiang Shen, Yang Dong, Junjun Wu, Jun Lv, Zhiyong Bao, Jiewu Cui, Jian Zhang, Guangqing Xu
Summary: This study successfully synthesized NiFe2O4/SiNWs heterojunctions and constructed a photoelectrocatalytic degradation system based on this heterojunction. The experimental results showed that NiFe2O4/SiNWs exhibited higher light absorption, stronger photocurrent density, and lower carrier recombination, leading to significantly enhanced photoelectrocatalytic activity and high degradation efficiency.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qijun Li, Shizhi Dong, Hongbo Xie, Jie Ren, Xudong Hu, Yanshuai Li, Hewei Zhao, Zhiyu Liu, Fanghong Sun
Summary: In this study, stable, efficient, and abundant c-a interfaces were formed by synthesizing crystalline FeP and amorphous MoP on foam ferrum. Theoretical calculations showed that the c-a interface optimized the overall electronic structure, enabling Mo and Fe to exhibit excellent HER and OER activity, respectively. The collaboration between the two types of active sites promoted overall water splitting. This research not only has implications for transition metal phosphides but also provides references for other types of catalysts.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Inayat Ali Khan, Per Morgen, Saso Gyergyek, Raghunandan Sharma, Shuang Ma Andersen
Summary: In this study, metallic iridium nanoparticles supported on antimony-doped tin oxide were successfully synthesized using a facile microwave-assisted polyol method. By optimizing the synthesis parameters, highly active and durable electrocatalysts with narrow size distribution and homogeneous dispersion were obtained. The best catalyst, synthesized at 160 degrees C, showed 1.5 times higher activity and 2 times better stability compared to a state-of-the-art commercial catalyst.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hong Chul Lim, Yujin Cho, Donghoon Han, Tae Hyun Kim
Summary: This study introduces a novel electrocatalyst composed of Prussian blue (PB)-graphene quantum dot (GQD), which exhibits exceptional activity and stability. The symbiotic relationship between PB nanoparticles (NPs) and GQD accelerates electron transport, increases electrochemically active sites, and shortens mass transfer lengths. The presence of GQD mitigates the decomposition of PB NPs and ensures continuous electrocatalytic performance.
APPLIED SURFACE SCIENCE
(2024)
