Article
Engineering, Chemical
Jing Zhu, Yongcai Zhang, Li Shen, Jing Li, Liangliang Li, Fen Zhang, Ya Zhang
Summary: The Nb5+-doped SrTiO3 showed enhanced photocatalytic efficiency and was found to be a potential efficient photocatalyst for the remediation of Cr(VI)-contaminated water, with 3% Nb-SrTiO3 being the optimum product.
Article
Green & Sustainable Science & Technology
Dongwei Ma, Linyunuo Lai, Carlos Ponce de Leon, Du Yuan, Jia Hong Pan
Summary: Mesoporous anatase TiO2 spheres with controllable textural properties were synthesized through microwave-assisted rapid crystallization. These spheres showed superior performance as cathode materials for aluminium-ion batteries. Through detailed investigation, the storage mechanism of aluminium ions in TiO2 spheres was revealed.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Berna Kocer Kizilduman, Yasemin Turhan, Mehmet Dogan
Summary: This study synthesized carbon spheres from rice husk using hydrothermal carbonization method at different temperatures and reaction times. The optimal conditions for achieving homogeneous and ideal sphere morphology were found to be 280 degrees C and 6 hours, with hydrogen storage capacity directly proportional to mesopore volumes. Characterization included BET surface area analysis, SEM imaging, FTIR-ATR and XRD structural analysis, and DTA/TG thermal analysis.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yulia Eka Putri, Melvi Muharmi, Tio Putra Wendari, Diana Vanda Wellia
Summary: SrTiO3 thin films were fabricated on glass substrates using the in-situ sol-gel-hydrothermal method. The TiO2 layer was initially deposited using the sol-gel method, followed by the diffusion of Sr2+ ions in the TiO2 layer to obtain SrTiO3 via the hydrothermal method. The prepared SrTiO3 thin films exhibited a polycrystalline perovskite structure with different surface morphologies, and the optical properties were found to be dependent on the thickness of the films.
SURFACES AND INTERFACES
(2023)
Article
Geochemistry & Geophysics
I Criouet, J-C Viennet, P. Jacquemot, M. Jaber, S. Bernard
Summary: The ancient fossil record provides crucial information on the diversity and disparity of ancient life, but decoding it can be challenging due to geological history. This study demonstrates that abiotic organic cell-like microstructures meeting biogenicity criteria can form under classical diagenesis conditions.
GEOCHEMICAL PERSPECTIVES LETTERS
(2021)
Article
Energy & Fuels
Mano Ganapathy, Yang Hsu, Joy Thomas, Liang-Yih Chen, Chang-Tang Chang, Viswanathan Alagan
Summary: In this study, SrTiO3, Bi2S3, and SrTiO3/Bi2S3 heterojunction were prepared for efficient photocatalytic hydrogen production. By controlling the weight percentage of Bi2S3, the SrTiO3/Bi2S3 heterojunction showed enhanced photocatalytic performance compared to pure SrTiO3 and Bi2S3. The formation of SrTiO3/Bi2S3 heterojunction effectively separated the photogenerated charge carriers, leading to improved photocatalytic hydrogen production under UV light.
Article
Chemistry, Analytical
Wei Wang, Feng Li, Nan Zhang, Caixia Liu, Jingran Zhou, Dali Liu, Shengping Ruan
Summary: A potential gas-sensing material with high response and good selectivity based on Co3O4-functionalized WO3 hollow microspheres was successfully synthesized in this study. The gas-sensing properties of the material were significantly enhanced towards toluene after functionalization with Co3O4 nanoparticles. This enhancement was mainly attributed to the catalytic activity of Co3O4, the increase in oxygen species and vacancies, and the widening in conductive channel in the composite.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Ian L. Peczak, Robert M. Kennedy, Aili M. Simpson, Massimiliano Delferro, Kenneth R. Poeppelmeier
Summary: Sr-Ti-OH mixtures were synthesized from various Sr2+ and Ti4+ reagents and treated by convection- and microwave-assisted heating to obtain STO nanoparticles. It was found that the phase composition of the prehydrothermal Sr-Ti-OH mixture and the choice of heating method influenced the morphology of the final nanoparticles. STO was the most stable phase in Sr-Ti-OH mixtures synthesized with TiCl4, while titania sol-gels were stable phases when other Ti4+ sources were used. STO nanocuboids could be formed from a variety of Sr-Ti-OH mixtures regardless of mixture composition using microwave-assisted hydrothermal treatment.
Article
Energy & Fuels
Dennis Jung, Gozde Duman, Michael Zimmermann, Andrea Kruse, Jale Yanik
Summary: In this study, the growth mechanism of hydrothermal carbonization products was investigated using different salts as additives. The results showed that the acceleration of the growth rate is independent of the formation rate, suggesting a coagulation mechanism.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
Selvaraj Venkateshwaran, Thamodaran Partheeban, Manickam Sasidharan, Sakkarapalayam Murugesan Senthil Kumar
Summary: The development of MoS2-based catalyst with enriched metallic (1T) phase has attracted increasing attention. Current techniques for synthesizing 1T-MoS2 face challenges, but using the SBA-15 template-assisted technique has shown promise in achieving 90% phase enrichment.
Article
Chemistry, Multidisciplinary
Kaiqi Lv, Zhengjian Chen, Jiaheng Zhang, Yong Liu, Jinxing Long
Summary: Current lignin conversion techniques face the challenge of low carbon utilization efficiency due to the generation of residual solid (char). Therefore, understanding the pathway for char formation is crucial for lignin valorization. This study provides mechanistic insights into char formation in lignin depolymerization through hydrothermal decomposition. The results suggest that the char consists of a multi-layer construction of coke and oligomer, primarily derived from native G-lignin and demethoxylation of S-lignin, while H-lignin contributes to the formation of volatile monophenols. Additionally, new methylene bridges form between the benzene rings in lignin, leading to the formation of recalcitrant char. A plausible mechanism for char formation is proposed and verified using density functional theory calculation.
Article
Energy & Fuels
Simran Kour, Pawanpreet Kour, A. L. Sharma
Summary: Researchers prepared self-assembled carbon-wrapped MnCo2O4 composite and investigated its structural and electrochemical performance. The optimized composite showed a maximum capacitance of 626.8 Fg(-1) and retained 98% of capacitance after 6000 cycles. The asymmetric cell with the composite as a cathode and MnO2/Activated carbon as an anode displayed 45.5 Whkg(-1) of energy. The results suggest promising performance of the composite for hybrid supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Zhixiang Guo, Yuting Diao, Xinru Han, Zihao Liu, Yonghong Ni, Li Zhang
Summary: Mesoporous NiCo2Se4 tubes, as electrode materials for supercapacitors, demonstrate exceptional energy-storage performance and cycle stability, with high specific capacitance and energy density at different current densities.
Article
Materials Science, Ceramics
Fujun Chen, Hao Qian, Xiaoyuan Sun, Mu Song, Yunfei Liu, Yinong Lyu
Summary: In this study, lead-free Bi0.5Na0.5TiO3 (BNT) films with designed grain size were grown on Nb-doped SrTiO3 (Nb:STO) (001) single-crystalline substrates via hydrothermal synthesis to enhance the energy-storage efficiency and density of thin-film capacitors. By adjusting the grain size, an ultrahigh energy-storage efficiency and superior recoverable energy-storage density were achieved in pure BNT films, which also exhibited weak frequency dependence and excellent anti-fatigue property. Hydrothermal synthesis is shown to be an efficient, inexpensive, and promising way to adjust grain size and energy storage in film capacitors.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Electrochemistry
Jun Pu, Mengting Han, Tao Wang, Xiaomei Zhu, Mingyuan Lu, Jiaxu Chen, Wen Liu, Yang Dai, Yun Tan
Summary: The nitrogen-doped CuCo2O4 double shell hollow mesoporous sphere structure reported in this study serves as a carrier for sulfur species. Its unique double shell structure provides multiple confinement spaces, chemisorption, and catalytic sites, effectively impeding the shuttle effect of polysulfides. Additionally, the higher surface area and abundant porosity contribute to rapid redox kinetics. This work offers a promising strategy for achieving high-performance Li-S batteries using metal compounds with a unique hollow structure.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
