Article
Materials Science, Composites
Ayda Bouhamed, Qin Binyu, Benny Boehm, Nathanael Joehrmann, Nicole Behme, Werner A. Goedel, Bernhard Wunderle, Olav Hellwig, Olfa Kanoun
Summary: The study focuses on developing a high performance flexible nanogenerator based on hybrid piezoelectric composite, with improved piezoelectric performance by doping with silver nanoparticles. Dimethyl formamide (DMF) solvent is used to enhance the rate of crystalline phases, resulting in improved output voltage and power of the nanogenerator.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Chunjie Li, Shili Guo, Songhao Shang, Pengcheng Qi, Bailian Li
Summary: This study aimed to compare the biochemical processes and mechanisms at the microaggregate scale for different land use types in the water source area of China's Middle Route of the South-to-North Water Diversion Project. The results showed that microaggregates from forests and shrublands had a flocculent spatial structure, while those from terraces had a nondirectional plate-like spatial structure, and those from cultivated land had a laminar spatial structure. The mineral composition and spatial structure of microaggregates are important determinants of soil biochemical processes and mechanisms.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Applied
Indira Govindaraju, Guan-Yu Zhuo, Ishita Chakraborty, Sindhoora Kaniyala Melanthota, Sib Sankar Mal, Bhaswati Sarmah, Vishwa Jyoti Baruah, Krishna Kishore Mahato, Nirmal Mazumder
Summary: This study investigated the structural and functional characteristics of starch from ten indigenous rice varieties in Northeast India, showing variations in physicochemical properties and hydrolysis rates. Results revealed changes in starch granule shape during enzymatic hydrolysis and differences in starch crystallinity. Additionally, the research identified amylose hydrolysis and disturbances in the ordered arrangement in the crystalline part in hydrolyzed starch granules.
FOOD HYDROCOLLOIDS
(2022)
Article
Optics
Jeremy Xuan Yu Chew, Zi Heng Lim, Y. Qi, Guangcan Zhou, Guangya Zhou
Summary: Infrared devices are increasingly used in various applications. This paper introduces a novel dispersive spectrometer that has high-throughput and decoupled spectral resolution. The proposed spectrometer utilizes a two-stage Hadamard transform encoding process to increase the signal-to-noise ratio. With a single-pixel detector, the system can be easily implemented in other desired wavelengths. Additionally, a method is developed to remove the need for uniform illumination and improve the ease of device design for in situ measurement.
Article
Chemistry, Analytical
Zhenying Mei, Rongfei Zhang, Zhimin Zhao, Xinjun Xu, Baizhong Chen, Depo Yang, Guodong Zheng
Summary: Using central-composite design, the optimal conditions for extracting antioxidant compounds from CRC were determined to be 72% amplitude, 80 min ultrasonic time, and 70% ethanol concentration. The maximum yields of TPC, TFC, DPPH, and ABTS were found to be 145.73 mg GAE/g, 135.21 mg QE/g, 87.88 mg TE/g, and 76.18 mg TE/g, respectively. Additionally, 55 phytochemicals were identified in the CRC extract, including 34 flavonoids, which can support various potential applications of CRC.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Chemistry, Analytical
Rajesh Kumar, Sheo K. Mishra, Arvind Kumar, Indresh Kumar, Manjeet Kumar, Ju-Hyung Yun, Sunil Kumar, Abhimanyu Kumar Singh
Summary: This study focuses on the synthesis and characterization of pure and cerium rare-earth-ion-doped ZnO (CZO) nanophosphors with different Ce concentrations. The structural, morphological, optical, and photoconductivity properties of the synthesized nanophosphors were investigated. The results show that the CZO samples exhibit crystalline hexagonal wurtzite ZnO nanostructures, and the presence of Ce in ZnO was confirmed. The CZO samples also demonstrate efficient photoconduction, indicating their suitability for luminescent and photosensor applications.
Article
Food Science & Technology
Lukas Spiess, Peter de Peinder, Harrie van den Bijgaart
Summary: The study evaluates the potential of using Fourier-transform mid-infrared spectrometry combined with cluster algorithms to screen adulterated liquid milk products. The combination of untargeted screening methods and cluster algorithms can reveal meaningful and generalizable categories of atypical milk spectra, providing valuable complementary quality assurance in routine FTIR milk analysis. Spectral information and meta-data associated with their acquisition can be used to form hypotheses about the underlying causes of atypical milk composition.
Article
Chemistry, Physical
Ritesh Verma, Ankush Chauhan, Khalid Mujasam Batoo, Muhammad Hadi, Emad H. Raslan, Rajesh Kumar, Muhammad Farzik Ijaz, Abdulaziz K. Assaifan
Summary: The synthesis of vanadium-doped BCZT ceramic oxides was reported in this paper, confirming the existence of a solubility limit of V in BCZT ceramics. Analysis revealed the influence of crystal structure and formation of oxygen vacancies on the luminescence and electrical properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biochemistry & Molecular Biology
Zhongqi He, Sunghyun Nam, Hailin Zhang, Ocen Modesto Olanya
Summary: This study compared the chemical composition and thermogravimetric behaviors of glanded and glandless cottonseed kernels. The results showed that glandless cottonseed kernels had lower levels of gossypol, making them suitable for food applications. Both types of cottonseed kernels had similar chemical components and mineral contents, but glandless kernels had slightly higher protein, starch, and phosphorus contents. Additionally, the study found that glandless cottonseed kernels could be heat treated at optimal temperatures for food processing, while glanded cottonseed was more suitable for non-food pyrolysis.
Article
Food Science & Technology
Xuejiao Ren, Huili He, Tuoping Li
Summary: The study examined the structural and functional differences in flaxseed gum samples obtained from different flaxseed cultivars. Results showed significant variability in FG yields, as well as slight differences in FTIR spectra, XRD patterns, and SEM images among the samples from different cultivars. The zeta potential measurements also indicated cultivar-dependent differences in the samples, suggesting diverse structural properties across different flaxseed cultivars.
FOOD SCIENCE & NUTRITION
(2021)
Article
Chemistry, Multidisciplinary
Vijeta Bhatia, Dinesh Kumar, Harpreet Singh, Navjeet Kaur, S. M. Rao, Ashok Kumar, Vimal Mehta, Supreet Pal Singh
Summary: In this study, the optical, thermoluminescent, structural, and physical characteristics of samarium doped manganese potassium borate glasses were analyzed using various techniques. The glasses exhibited non-crystalline characteristics and different structural groups were identified. Physical and optical parameters were evaluated to study their responses to different Sm3+ concentrations.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Applied
Carla N. Schnell, Maria Galvan, Yamil N. Solier, Maria C. Inalbon, Miguel A. Zanuttini, Paulina Mocchiutti
Summary: The effect of ethanol concentration on the ionization degree of xylan and chitosan, as well as the properties of polyelectrolyte complex suspensions and derived films, was studied. Increasing ethanol concentration led to changes in particle sizes, z-potential values, and crystallinity of films. The stress at break of the films increased, while the swelling capacity decreased favorably.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Textiles
Srinivas Shenoy Heckadka, Suhas Yeshwant Nayak, C. Raghavendra Kamath, S. P. Adarsh, Rashmi Samant
Summary: This research investigates the potential use of polyalthia longifolia leaf mid-rib fibers as a reinforcement for polymer composites. The fibers were treated with sodium hydroxide for different durations, and the effect on the fibers' tensile strength was examined. A 6-hour treatment was found to be optimum, resulting in a maximum tensile strength of 134 MPa. Various modifications and fracture mechanisms were observed through microscopic analysis.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Food Science & Technology
Chunwei Li, Xiankang Fan, Yangying Sun, Changyu Zhou, Daodong Pan
Summary: Goose liver oil microcapsules prepared with konjac glucomannan and soybean protein isolate exhibited high encapsulation efficiency and improved thermal and oxidative stability compared to free goose liver oil. The microcapsules showed a smooth spherical surface morphology and homogeneous internal structure. They also demonstrated good gastric juice permeability and controlled release in the intestinal region.
Article
Instruments & Instrumentation
Jie Ke, Chuang Gao, Ana A. Folgueiras-Amador, Katherine E. Jolley, Oscar de Frutos, Carlos Mateos, Juan A. Rincon, Richard C. D. Brown, Martyn Poliakoff, Michael W. George
Summary: A continuous-flow electrochemical synthesis platform has been developed for self-optimization of organic electrochemical reactions using ATR FT-IR and GC as monitoring techniques. Two types of gas-liquid separators were designed to overcome challenges in using ATR FT-IR for downstream analysis when a large amount of hydrogen gas is produced. This approach provides a reliable method for quantifying low-volatile analytes and optimizing reaction conditions without operator intervention.
APPLIED SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Feng Chen, Shuquan Huang, Yuanguo Xu, Liying Huang, Wei Wei, Hui Xu, Huaming Li
Summary: In this study, an ionic liquid-modified carbon nitride (hm-CN) was synthesized to improve photocatalytic performance, with the best efficiency achieved by 30hm-CN degrading 95% of pollutants in 3 hours. The catalyst also showed good activity in degrading various pollutants under different conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Yunpeng Zhai, Wei Wei, Huihui Hu, Junjie Jing, Xiaomeng Lv, Yuanguo Xu, Jimin Xie
Summary: In this study, a double-layered hollow nanostructure composed of CoSn(OH)(6)@ZnSn(OH)(6) with rGO decoration was prepared by a controlled alkali etching method. The increased specific surface area of the double-layered hollow structure provided ample buffer space for volume changes during cycling, while rGO effectively facilitated ion and electron transport, leading to improved storage capacity and stability. The CoSnO3@ZnSnO3/rGO material exhibited higher capacitance and better capacity retention rate compared to CoSnO3 and CoSnO3@ZnSnO3, demonstrating the potential for high-performance energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Waleed Yaseen, Nabi Ullah, Meng Xie, Wei Wei, Yuanguo Xu, Muhammad Zahid, Chidinma Judith Oluigbo, Bashir Adegbemiga Yusuf, Jimin Xie
Summary: This study presents a simple one-pot method to synthesize cobalt-iron nanoparticles encapsulated in mesoporous carbon nanosheets for high-performance electrocatalysis. The electrocatalyst exhibits notable performance, showcasing potential for the development of cost-effective non-noble metal-based bifunctional electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Wei Wei, Shilong Yang, Huihui Hu, Hui Li, Zhifeng Jiang
Summary: A novel hierarchical-assembly approach was developed for the co-assembly of ZnFe2O4 NPs and graphene-coupled PANI nanosheets, resulting in the fabrication of ultralight and porous ZnFe2O4/PANI@rGO aerogels for efficient electrochemical detection of p-NP. These ternary aerogels exhibited excellent reduction ability and outstanding p-NP sensing performance, with a wide linear concentration range and high stability, making them suitable for accurate detection in tap water.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Physical
Liquan Jing, Minqiang He, Meng Xie, Yanhua Song, Wei Wei, Yuanguo Xu, Hui Xu, Huaming Li
Summary: In this study, a brown carbon nitride co-modified with oxygen bridges and porous defects was successfully synthesized via a universal acylation method. Results showed that the material had a significantly higher removal rate for bisphenol A and 2-mercaptobenzothiazole compared to the original carbon nitride. Further analysis revealed a potential photocatalytic degradation pathway with key factors including hydroxyl radicals, superoxide radicals, singlet oxygen, and holes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zongyao Zhang, Zhihong Gao, Yanqi Zhang, Zaoxue Yan, Isaac Kesse, Wei Wei, Xinhong Zhao, Jimin Xie
Summary: Hierarchical porous nitrogen-doped graphite from tissue paper (N-ATG) shows excellent performance as a symmetric supercapacitor electrode material, with ultra-high capacitance and energy densities suitable for high power density operations. Its key features include high specific surface area, large pore diameter, high nitrogen doping content, graphitized structure with widened lattice distance, dense defects and high packing density, which contribute to its outstanding performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Chemical
Chun Tong, Liquan Jing, Minqiang He, Meng Xie, Wei Wei, Yuanguo Xu, Hui Xu, Huaming Li
Summary: A green and efficient catalyst, 1D nanorod Fe2O3/NaNbO3 composite, was successfully prepared and showed superior performance in degrading tetracycline, especially in the presence of H2O2 solution. The introduction of Fe2O3 nanoparticles was found to activate H2O2 more efficiently and generate more free radicals to degrade pollutants. This study provides insights into the design of a photo-Fenton catalyst with dual ion synergy and full spectrum response.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zaoxue Yan, Zhihong Gao, Zongyao Zhang, Chengjing Dai, Wei Wei, Pei Kang Shen
Summary: By controlling the morphology and structure of cracked defective graphene nanospheres (GNS), carbon electrodes with high gravimetric and volumetric capacitances can be obtained, which has the potential to enhance the performance of supercapacitors.
Article
Chemistry, Physical
Zaoxue Yan, Yanqi Zhang, Chengjing Dai, Zongyao Zhang, Mingmei Zhang, Wei Wei, Xiaomeng Lv, Xinhong Zhao
Summary: By encapsulating large Pt shell/Ni core particles with thick and porous nitrogen-doped carbon layers, excellent stability and high activity of the composite catalyst were achieved, maintaining high oxygen reduction activity value even after a large number of cyclic voltammetry cycles.
Article
Chemistry, Physical
Hui Li, Shilong Yang, Wei Wei, Mingmei Zhang, Zhifeng Jiang, Zaoxue Yan, Jimin Xie
Summary: A scalable strategy to prepare efficient bifunctional electrocatalysts is crucial for industrial electrocatalytic water splitting. In this study, a three-dimensional core chrysanthemum-like FeS/Ni3S2 heterogeneous nanoarray was successfully fabricated via a simple hydrothermal method, showing improved catalytic performance in alkaline media for oxygen evolution and hydrogen evolution reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhifeng Jiang, Min Zhou, Wei Wei, Daujun Mao, Huaming Li, Michael K. H. Leung, Xinchen Wang, Po Keung Wong
Summary: The synthesis of TRP-NH2 catalyst with heteroatoms doping and NH2 functionalization has effectively improved the efficiency of photocatalytic CO2 reduction. Experimental results demonstrate a significantly higher CO formation rate compared to traditional catalysts, indicating promising potential for applications in solar-driven CO2 reduction.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Multidisciplinary
Zaoxue Yan, Yanqi Zhang, Zhifeng Jiang, Deli Jiang, Wei Wei, Zhuofeng Hu
Summary: It has been demonstrated that nitrogen-doped bimetallic carbide-graphite composite (N-Fe2MoC-GC) exhibits much better oxygen reduction reaction (ORR) activity compared to commercial Pt/C, with exceptional stability and excellent resistance to methanol and CO. Furthermore, N-Fe2MoC-GC maintains high power density even under low relative humidity or at high operation temperature.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Zaoxue Yan, Jiajia Cui, Zongyao Zhang, Zhifeng Jiang, Wei Wei, Guisheng Zhu, Xinhong Zhao
Summary: We demonstrate that the electrochemically corroded thick nitrogen-doped carbon (N-C) layer encapsulated Pt/C catalyst exhibits high activity and ultrahigh stability for methanol oxidation and oxygen reduction reactions. The encapsulation of thick N-C layers initially results in low activity, but after an aging corrosion process, the activities increase significantly and remain stable. The catalyst also shows high power densities and maintains stability in an acidic membrane fuel cell. The corrosion of the thick N-C layer leads to the formation of micropores, which enhance mass transport and protect Pt particles, thereby improving activity and stability.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zheyang Liu, Jianli Liang, Qianqian Song, Yang Li, Zhiquan Zhang, Min Zhou, Wei Wei, Hui Xu, Chun-Sing Lee, Huaming Li, Zhifeng Jiang
Summary: This study reports a photocatalyst using zero-dimensional black phosphorus quantum dots (BPQDs) to decorate one-dimensional carbon nitride nanotubes (CNNT), which can efficiently convert CO2 to CO with better catalytic efficiency than similar photocatalysts and pristine carbon nitride nanotubes. The construction of BPQDs-anchoring heterostructures provides a novel insight into the design of photocatalysts for CO2 reduction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Multidisciplinary
Wei Wei, Rene Huebner, Maximilian Georgi, Cui Wang, Xiaodong Wu, Alexander Eychmueller
Summary: This study investigates the important role of structure homogeneity in three-dimensional network nanostructures serving as noble metal aerogels (NMAs) and develops a new modulation strategy to prepare multiscale NMAs with tunable composition. By studying nanoparticle-ligand interactions, the structure homogeneity of noble metal aerogels is optimized, providing further proof of their exceptional electrocatalytic capabilities.
MATERIALS ADVANCES
(2022)
