Article
Chemistry, Physical
Dineo P. Sebuso, Alex T. Kuvarega, Kebadiretse Lefatshe, Cecil K. King'ondu, Nagla Numan, Malik Maaza, Cosmas M. Muiva
Summary: Green synthesis of nanostructured multilayer graphene and zinc oxide nanocomposites from natural extracts has been developed for the photo degradation of brilliant black (BB) under solar light irradiation. The physicochemical properties of the synthesized materials were studied using various characterization techniques. The MLG/ZnO nanocomposite showed great potential for the removal of pollutants from water under natural solar light irradiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Syed Nabeel Ahmed, Waseem Haider
Summary: The advances in nanotechnology have introduced photocatalytic nanomaterials as effective solutions for degrading toxic contaminants in water. In this study, a nanocomposite of zinc oxide and graphene oxide showed promising photocatalytic behavior for degrading pollutants like dyes. The addition of hydrogen peroxide significantly enhanced the photodegradation rate by increasing the number of trapped electrons and generating more oxidizing species.
Article
Chemistry, Physical
Muenevver Tuna Genc, Adem Sarilmaz, Semih Dogan, Ilknur Aksoy Cekceog, Abdurrahman Ozen, Emre Aslan, Burcu Saner Okan, Juhana Jaafar, Faruk Ozel, Mustafa Ersoz, Imren Hatay Patir
Summary: This study focuses on the synthesis of heterostructured TEGO/ZnO nanocomposite catalyst by combining recycled carbon source with ZnO. Photodeposited MoSx and Pt on TEGO/ZnO nanocomposite show enhanced photocatalytic activity and stability as well as antibacterial activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Physics, Condensed Matter
N. Chidhambaram, S. Senthil Kumari, W. Nirmala, S. Gobalakrishnan, T. Arun, R. Udayabhaskar, Mauricio J. Morel
Summary: This study presents an insightful investigation on the integrative impact of tin and graphene on the physical features of ZnO-Sn@Graphene nanopowders. The results demonstrate that the in situ synthesis strategy restricts the growth of nanoparticles on graphene sheets, resulting in dispersed semiconductor nanoparticles. Additionally, the amalgamation of ZnO-Sn with graphene significantly reduces the optical bandgap value and enhances the efficiency of photogenerated charge carriers separation and photoluminescence quenching.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Nguyen Xuan Sang, Tran Thi Ly Na, Luu Thi Lan Anh, Pham Thi Thuy, Nguyen Tri Tuan, Tran Thanh Tung, Anh Tuan Trong Tran, Quoc Hue Pho, Cameron James Shearer, Dusan Losic
Summary: This study systematically investigates the visible light-photocatalytic performance of synthesized ZnO/Gr composite materials with different Gr content under various conditions. The presence of graphene in the composites enhances their photocatalytic activity compared to pure ZnO under sunlight irradiation. The highest photodegradation efficiency is achieved when the content of Gr is 1 wt%, reaching approximately 94%. This enhancement is attributed to the increased visible light absorption and the reduction of bandgap value in the hybridized composite. The investigation of scavenger substances suggests that holes contribute as the reactive agent in the photodegradation process.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Yingxiang Dong, Ziqing Liu, Yin Ning, Steven P. Armes, Dan Li
Summary: This study demonstrates the construction of organic-inorganic nanocomposite crystals through the decoration of nanoparticles with double-hydrophilic diblock copolymers, and shows remarkable morphology and photocatalytic properties. It provides a new approach for the design and application of nanomaterials.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Chemical
Zambaga Otgonbayar, Won-Chun Oh
Summary: This study designs a ternary nanomaterial structure containing a quaternary chalcogenide nanocomposite to address the deficiencies in poor semiconductor materials for CO2 reduction. The ternary photocatalyst, AgFeNi2S4-Graphene-ZnO, shows high levels of CO2 reduction to methanol due to the improved charge transfer between the components. The stability and recyclability of the photocatalysts were also determined.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
P. Maheswari, S. Subanya, A. Nisha, V Ravi, K. B. Rajesh, Rajan Jha
Summary: This paper numerically analyzes the performance of a surface plasmon resonance (SPR) biosensor utilizing a nanocomposite layer consisting of nickel and ZnO in a modified Kretchmann configuration. The results show that the proposed SPR sensor achieves a high sensitivity of 378.34 degrees/RIU with a quality factor (QF) of 39.78/RIU, making it suitable for various applications in biosensing.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Optics
Abdullah A. Manda, Shamsuddeen A. Haladu, Khaled A. Elsayed, Umar Ibrahim Gaya, Muidh Alheshibri, Abbad Al Baroot, Emre Cevik, Filiz Ercan, T. S. Kayed, Saminu Musa Magami, Nafala A. Altamimi, Ismail Ercan
Summary: Laser synthesis is an efficient method for synthesizing nanomaterials, and this study focuses on the synthesis of ZnO-TiO2 and ZnO-TiO2-reduced graphene oxide (ZT-rGO) nanocomposites using pulse laser ablation. The addition of rGO loading enhances the crystalline nanostructures, thermal stability, and the removal of methylene blue dye. The ZT-rGO 5% nanocomposite shows the best photocatalytic activity, and the nanocatalysts achieve 98.5% MB removal within 30 minutes. The laser ablation technique shows great potential for the fabrication of ZT-rGO nanocomposites and efficient decolorization of wastewater.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zerrin Pat
Summary: Novel graphene/ZnO nanocomposites were prepared for photocatalytic degradation of methylene blue. The concentration of graphene was found to impact the photocatalytic mechanism, with lower mass nanocomposites showing better degradation of MB under day-light conditions.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Xinzhe Xiao, Yumin Zhang, Lei Zhou, Bin Li, Lin Gu
Summary: Graphene oxide (GO) is an excellent photoluminescence (PL) material with unique optical properties. It has been widely used in various fields such as material science and biomedicine. The luminescence mechanism of GO and GOQDs is still not fully understood, but they show potential in medical imaging and biosensors.
Article
Chemistry, Physical
Rizhao Ou, Zexin Zeng, Xutao Ning, Bin Zeng, Chaofu Wu
Summary: A sandwich-type hybrid consisting of N-doped ZnO/N-doped graphene/N-doped ZnO was successfully fabricated via solution reaction and carbonization, showing excellent photocatalytic performance. The sandwich-type structure provides plenty of active sites and facilitates effective photoinduced electron-hole separation. This strategy offers an effective method to prepare such sandwich-structured composites for photocatalysis or energy storage.
APPLIED SURFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Wessam Wanas, Samir Ali Abd El-Kaream, Shaker Ebrahim, Moataz Soliman, Marwa Karim
Summary: Graphene based nanomaterials are investigated for cancer bioimaging and biomedical science and engineering. A dual-mode emission nanocomposite (GN/FA-ZnO) with long luminescence lifetime and targeted behavior for tumor bioimaging is prepared. The nanocomposite shows clear fluorescence and selective bioimaging of the tumor. This study introduces a novel strategy for tumor targeting and spectral encoding.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
S. Zarei, M. Hasheminiasari, S. M. Masoudpanah, J. Javadpour
Summary: ZnO-xSnO(2) composite films were prepared by sol-gel spin coating process and characterized. The films showed distinct microstructure with ZnO pyramids on SnO2 nanoparticles. The ZnO-25 mol% SnO2 film exhibited higher photocatalytic degradation of methylene blue dye compared to pristine ZnO and SnO2 films.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Runsheng Liu, Chuang Hou, Xinchao Liang, Zitong Wu, Guoan Tai
Summary: This paper reports the preparation of borophene-ZnO heterostructures and their applications in broadband photonic nonvolatile memory. The memory shows good switching ratio and long-term stability, and has a broad light response to multiple wavelengths.
Article
Nanoscience & Nanotechnology
Miaomiao Xiang, Huihui Liu, Chenxi Huang, Yue Li, Hualing Zeng, Xiang Shao
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Zhe Li, Hao Yuan, Yuniu Sun, Jiefu Zhang, Zhenyu Li, Xiang Shao
JOURNAL OF CATALYSIS
(2020)
Article
Chemistry, Multidisciplinary
Chenxi Huang, Jun Fu, Miaomiao Xiang, Jiefu Zhang, Hualing Zeng, Xiang Shao
Summary: The research focused on the impact of interface interactions on the functionality of semiconductor heterojunctions when incorporating two-dimensional materials. By directly growing MoS2 nanosheets on SrTiO3 single crystal substrates, a model system with high-quality interfaces in the SH has been successfully constructed.
Article
Chemistry, Multidisciplinary
Xinyu Zhang, Hong Shi, Guilin Zhuang, Shengda Wang, Jinyi Wang, Shangfeng Yang, Xiang Shao, Pingwu Du
Summary: In this study, the precise synthesis of a 3D highly strained all-phenylene bismacrocycle, termed conjoined (1,4)[10]cycloparaphenylenophane (SCPP[10]), was reported. The conjoined structure of SCPP[10] was confirmed in real space at the atomic scale by scanning tunneling microscopy. The theoretical calculations indicated that this bismacrocycle has a very high strain energy and the largest interphenylene torsion angle caused by multiple repulsive interactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Zhe Li, Hao Yuan, Yuniu Sun, Jiefu Zhang, Hong Shi, Dandan Zhou, Zhenyu Li, Xiang Shao
Summary: The pre-adsorption of formic acid molecules can significantly enhance the heterolytic adsorption of hydrogen on the oxide surface, leading to an increased dissociative adsorption temperature of H-2. This study highlights the important impact of co-adsorbates on the surface reaction process and may provide new insights into the atomistic mechanisms of reactions involving H-2 on oxide catalysts.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Jinyi Wang, Hong Shi, Shengda Wang, Xinyu Zhang, Pengwei Fang, Yu Zhou, Gui-Lin Zhuang, Xiang Shao, Pingwu Du
Summary: This article reports the precise synthesis and tuning size-dependent (chir)optical properties of a new class of chiral PAHs-containing conjugated macrocycles. Efficient resolutions for chiral enantiomers were achieved by HPLC, and these macrocycles showed enriched size-dependent physical, chiral, and (chir)optical properties.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Dandan Zhou, Zhe Li, Yuniu Sun, Jiefu Zhang, Dan Wang, Xiang Shao
Summary: This study investigated the adsorption behavior of HCHO on a ZnO surface using LT-STM, revealing different adsorption configurations and diffusion directions of HCHO at different temperatures. Increasing HCHO coverage led to the formation of one-dimensional chains and various superstructures. Desorption of HCHO at high temperature resulted in regular line defects, indicating a gentle reduction of the ZnO surface.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Yuniu Sun, Hong Shi, Hao Yuan, Zhe Li, Jiefu Zhang, Dandan Zhou, Zhenyu Li, Xiang Shao
Summary: In this study, it was found that water forms one-dimensional chain structures on the ZnO(10-10) surface at submonolayer coverage. Using high-resolution scanning tunneling microscopy and density functional theory calculations, the single and double water chains were clearly distinguished, along with their compositions. Additionally, it was discovered that single water molecules spontaneously dissociate before aggregating into an ordered phase.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Hong Shi, Hao Yuan, Yuniu Sun, Xinbo Ma, Zhe Li, Dandan Zhou, Zhenyu Li, Xiang Shao
Summary: The dissociation of a single water molecule on a ZnO(10 (1) over bar0) surface was investigated through low temperature STM manipulation and DFT calculations. Positive pulses injected electrons into the system to break the bonding, while negative pulses injected holes to split the O-H bonds in different directions. The resulting proton and hydroxyl species showed distinct charged status and unique impacts on tailoring the surface properties of the metal oxide.
Article
Chemistry, Multidisciplinary
Chenxi Huang, Chen Chen, Wenyuan Wang, Jun Fu, Miaomiao Xiang, Yue Xing, Qi Chen, Hualing Zeng, Xiang Shao
Summary: This work presents a simple strategy to engineer the substrate surface morphology and fabricate a heterostructure with corrugated morphology, resulting in a suppressed photoluminescence of MoS2. The study provides insights into the dependence of the hybridized system's properties on the interface morphologies.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Miaomiao Xiang, Chenxi Huang, Yue Xing, Huihui Liu, Xiang Shao
Summary: Hybridization with oxide semiconductors provides a versatile strategy for tailoring the physicochemical properties of two-dimensional materials (2DMs). In this study, monolayer MoS2 flakes were successfully grown on atomically smooth rutile TiO2 single crystals with varying terminations. The growth parameters were found to have a significant impact on the quality of MoS2 on different TiO2 substrates. Additionally, the photoluminescence of MoS2 varied with the substrate terminations.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Yuniu Sun, Jiefu Zhang, Dandan Zhou, Dan Wang, Qingqing Wang, Xiaolin Tan, Xiang Shao
Summary: This work experimentally investigated the dispersion effect of water on Cu and Pd particles deposited on the ZnO(10-10) surface. It was found that water led to the dispersion of particles into single atoms and few-atom clusters. XPS measurements showed that Cu was easily oxidized by water, while Pd tended to bind surface hydroxyls and remain in a neutral state. These findings provide important insights into surface processes with water.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Dandan Zhou, Youxi Wang, Yuniu Sun, Jiefu Zhang, Dan Wang, Zhenyu Li, Xiang Shao
Summary: In this study, the adsorption state and interface charge transfer of catechol on a ZnO(10-10) surface were investigated using low-temperature scanning tunneling microscopy and density functional theory calculations. The results showed that annealing at elevated temperature induced spontaneous deprotonation of catechol, which played a critical role in switching the molecule from an electron acceptor to an electron donor relative to the ZnO surface.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Liangcai Zhang, Xinyu Liu, Hengwei Wang, Lina Cao, Chenxi Huang, Shang Li, Xiaohui Zhang, Qiaoqiao Guan, Xiang Shao, Junling Lu
Summary: Using the atomic layer deposition (ALD) technique, a series of Pd/ZnO catalysts were synthesized with Pd particle sizes ranging from 1.6 to 7.9 nm, showing a size-dependent SMSI effect. The research found that Pd particles larger than about 2.5 nm exhibit higher catalytic activity and methanol selectivity due to the size-dependent SMSI effect.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hong Shi, Huihui Liu, Zhe Li, Wenyuan Wang, Xiang Shao
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
