Article
Chemistry, Physical
Bo Dai, Feng Dong, Hangyu Wang, Yumei Qu, Jianxu Ding, Yong Ma, Mingliang Ma, Tingxi Li
Summary: This study focuses on the fabrication of CuS/Fe3O4@polypyrrole (CuS/Fe3O4@PPy) flower-like composites through a combination of hydrothermal method, solvothermal method, and in-situ polymerization, aiming to mitigate the serious threats posed by electromagnetic radiation to equipment accuracy, military safety, and human health.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Mohammad Reza Nabid, Yasamin Bide, Mahsa Jafari
Summary: This study synthesized Ni@Pd core shell nanoparticles as an efficient and easily recoverable catalyst for selective dehydrogenation of formic acid. The synergistic effect of Ni and Pd, the role of -NH2 groups, and the magnetic recovery property of Fe3O4 contribute to the high catalytic activity of the catalyst. The prepared catalyst exhibits a superb turnover frequency of 5367.8 h(-1) without additives, surpassing most previously reported catalysts.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Jiajia Ren, Chuanjin Wang, Jianxu Ding, Tingxi Li, Yong Ma
Summary: Magnetic core-shell Fe3O4@PPy@4-VP composites have been successfully fabricated for the treatment of multiple dyes. The effects of dye concentration, temperature, and time on the adsorption performances have been studied, and the adsorption kinetics, isotherm, and thermodynamic models have been used to elucidate the adsorption properties. The prepared adsorbent is capable of adsorbing multiple dyes simultaneously and can be rapidly separated from the solution.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Christoph Buttersack, Jorg Hofmann, Roger Glaeser
Summary: Sucrose hydrolysis on acidic ion-exchange resins was studied in a broad range of sucrose concentration and temperatures. The formation of 5-hydroxymethylfurfural from fructose, along with difructose dianhydrides as by-products, were observed. The color of the product mixture was found to be correlated to 5-hydroxymethylfurfural and influenced by size exclusion inside the resins.
Article
Chemistry, Multidisciplinary
Chenyi Yuan, Xiqing Wang, Xuanyu Yang, Abdulaziz A. Alghamdi, Fahad A. Alharthi, Xiaowei Cheng, Yonghui Deng
Summary: Novel sulfonic acid functionalized core-shell Fe3O4@carbon microspheres were designed and synthesized as an efficient and recyclable heterogeneous acid catalyst. These microspheres possess magnetic properties, high saturation magnetization value, uniform core-shell structure, and abundant acid functional groups. They exhibited high selectivity and recyclability in the acetalization reaction, demonstrating promising potential for industrial applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Electrochemistry
Rong Yu, Fuxin Liu, Nan He, Lingling Han, Xiuhui Liu
Summary: In this study, a non-enzymatic H2O2 electrochemical sensor based on silver nanoparticles and carbon nanospheres was successfully constructed. The sensor exhibited excellent electrocatalytic performance and anti-interference properties. It showed a wide linear range and low detection limit for hydrogen peroxide, and was successfully applied in the detection of hydrogen peroxide in real samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Applied
Agata Wawrzynczak, Sylwia Jarmolinska, Izabela Nowak
Summary: In this study, ordered nanostructured KIT-6 silica with different numbers of sulfonic groups were synthesized. The amount of the functional group precursor used affected the structural and textural parameters of the synthesized materials. The samples modified by grafting exhibited a stable mesoporous structure, while the ones synthesized by co-condensation showed characteristics of KIT-6 materials. The developed synthesis procedures yielded potential solid acid catalysts with desirable catalytic performances.
Review
Engineering, Environmental
Xiang Tan, Putla Sudarsanam, Jinyu Tan, Anping Wang, Heng Zhang, Hu Li, Song Yang
Summary: The development of social productive forces leads to the increasing consumption of fossil fuels, resulting in global warming and abnormal climate change. Biodiesel, produced using solid acid catalysts, is recognized as a renewable and clean energy source.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Wenkai Nie, Yan Lin, Xin Wu, Shaohua Wu, Xiang Li, Jay J. Cheng, Chunping Yang
Summary: In this study, chitosan-Fe3O4 was prepared and its effects on anaerobic digestion processes under acid stress were investigated. The results revealed that chitosan-Fe3O4 significantly increased the methanogenesis rate and accelerated the restoration of acidified anaerobic systems. The analysis of sludge characteristics indicated that chitosan-Fe3O4 promoted the secretion of proteins and humic substances, and enhanced the electron transfer activity of the system. Microbial community analysis showed that chitosan-Fe3O4 enriched the abundance of Peptoclostridium and facilitated direct interspecies electron transfer. These findings suggest that chitosan-Fe3O4 can be used to improve the efficiency of anaerobic digestion of high concentration organic wastewater under acid inhibition conditions.
BIORESOURCE TECHNOLOGY
(2023)
Article
Food Science & Technology
William Cardoso Lima, Leandro S. Oliveira, Adriana S. Franca
Summary: This study developed a low-cost adsorbent with a chemically modified surface bearing sulfonic groups using sunflower crop residue, which showed advantages in adsorption of phenylalanine. Optimization results indicated a higher adsorption capacity under specific conditions.
Article
Engineering, Environmental
Guillermo Alberto Portillo Perez, Marie-Josee Dumont
Summary: A low-cost, tunable polyvinyl-based solid catalyst has been developed to efficiently transform carbohydrates into HMF with a high yield of 94.3%. The catalytic efficiency and physical properties can be adjusted by varying the crosslinking concentration.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Sehrish Kanwal, Zareen Akhter, Naveed Zafar Ali, Rizwan Hussain, Samina Qamar
Summary: In this study, the corrosion protection behavior of epoxy blended sulfonate-doped polyaniline and polypyrrole coatings deposited on aluminum alloy substrates was investigated. The coatings exhibited improved anti-corrosion performance compared to pure epoxy coatings, and an optimal concentration of 1 wt% dopant resulted in low levels of corrosion impact on exposure to seawater.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Rui Gao, Xiang Li, Lingyun Guo, Zhikun Tong, Qiang Deng, Jun Wang, Zheling Zeng, Ji-Jun Zou, Shuguang Deng
Summary: A bifunctional catalyst based on pyrochlore/Al2O3 composites with rich oxygen defects was synthesized, showing enhanced C = O hydrogenation ability and Lewis acid-catalyzed ring-rearrangement ability. The composite-based catalysts demonstrated significantly improved reaction rates compared to single metal oxide-based catalysts.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Materials Science, Composites
Xiangpeng Lin, Siyao Cheng, Fan Wu, Yan Li, Qiu Zhuang, Wei Dong, Aming Xie
Summary: This study presents a strategy for the fabrication of polypyrrole/sulfonic acid doped microporous polyphenylene (PPy/SMPP) composites using post-functionalized microporous polyphenylene (MPP) as templates. The controlled growth of PPy in MPP nanochannels directs the formation of a unique microstructure, resulting in superior microwave absorption performance.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Yuan Chen, Yuancai Chen, Jianbo Jia, Bing Yan
Summary: This study successfully prepared microbial palladium nanoparticles for detoxifying triclosan. Characterization of Pd-NPs using TEM, SEM, XPS, and XRD revealed their distribution and composition, confirming their crucial role in degrading TCS and reducing its toxicity in polluted water. The findings provide new insights into the utilization of microbial Pd-NPs for detoxifying pollutants.
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
