Review
Chemistry, Multidisciplinary
Sungmin Han, C. Buddie Mullins
Summary: The study of Pd-Au model catalysts under UHV conditions reveals the influence of Pd ensemble size on H-2 desorption behavior, allowing H-2 to be used as a probe molecule for quantifying surface composition. Additionally, the Pd-Au interface is identified as the main reaction site for generating H-2, providing insights for potential liquid storage mediums for hydrogen.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Materials Science, Ceramics
Mohamed Achraf Bouabdellah, Itidel Belkadhi, Lassaad Ben Hammouda, Gwendoline Lafaye, Francisco Medina Cabello, Zouhaier Ksibi
Summary: W-La/CexZr1-xO2 catalysts with a Ce/Zr molar ratio of 1 exhibit the highest catalytic performance in the catalytic wet air oxidation of phenol. Catalysts prepared by precipitation or hydrothermal method show the best mineralization and Total Organic Carbon removal efficiency.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Estrella Serra-Perez, Juan Garcia Rodriguez
Summary: Emerging pollutants such as Bisphenol A (BPA) are becoming a global issue in wastewater treatment. This study investigated the use of metal-supported carbon nanospheres for BPA degradation, with 2% Ru load on the catalyst showing the best conversion rate. Two models were proposed to adjust experimental data, both demonstrating high accuracy with R-2 > 0.98. Testing on real hospital wastewater showed that the CNS-Pt(2%) catalyst had better efficiency compared to CNS-Ru.
Article
Environmental Sciences
Wanying Zhang, Wenjing Sun, Yanan Zhang, Danyang Yu, Weiling Piao, Huangzhao Wei, Xiaowei Liu, Chenglin Sun
Summary: This study explores the use of RuO2/TiO2 catalysts in the catalytic wet air oxidation (CWAO) process to degrade high-salinity and high-organic wastewater. The RuO2/TiO2-350 catalyst exhibits the best performance in both non-saline and saline conditions.
Article
Chemistry, Physical
Jae Ho Kim, Drajad Satrio Utomo, Daseul Lee, Jin Woo Choi, Myungkwan Song
Summary: The novel micro-flower lamellar structured alpha-MoO3 counter electrode shows higher catalytic activity, improved power conversion efficiency, better device stability, and enhanced flexibility for solid-state fiber-shaped dye-sensitized solar cells. Additionally, it maintains over 90% of its characteristics after 500 bending cycles, in contrast to the bare Pt device which decreases to 70%.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Applied
Jie Liu, Guanghua Wang, Shiyuan Zhou, Sangui Liu, Gen Li, Hong-Gang Liao, Shi-Gang Sun
Summary: Efficient and low-cost MoO3-CeOx electrocatalysts were successfully prepared for the electroreduction of N-2 to NH3, showing excellent NRR performance and electrochemical stability. Investigation of the electrochemical NRR mechanism of MoO3-CeOx provides a promising approach to designing potential electrocatalysts for NRR.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Environmental Sciences
Minghui Li, Hang Liu, Chang Liu, Yan Ding, Caixia Fang, Rui Wan, Hongjie Zhu, Yaning Yang
Summary: In this study, Pd sub-nanolayer on Au core catalysts supported on Al2O3 (sub-Pd-Au/Al2O3) were designed for highly effective catalytic hydrogenation reduction of oxyanions. The optimized catalyst exhibited excellent catalytic activity for the reduction of Cr(VI), Br(V) and Se(IV) oxyanions.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Bryan Li, Elizabeth Timings, Saeid Baroutian
Summary: This study investigated the use of non-catalytic and homogeneous catalytic wet oxidation for leachate treatment. The performance and reusability of economical catalysts (1 g/L MoO3 and CuO) were examined. The results showed that both temperature and the presence of catalysts contributed to the breakdown of organic matter in the leachate. However, fouling of the catalysts reduced their performance by up to 50% and limited their reusability.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Tingting Hu, Qian Liu, Zhan Zhou, Wei Zhao, Haoxin Huang, Fanqi Meng, Wanqiang Liu, Qinghua Zhang, Lin Gu, Ruizheng Liang, Chaoliang Tan
Summary: This study reports the preparation of organic/inorganic superlattice nanoparticles by intercalating dye molecules into layered MoO3 for fluorescence imaging-guided catalytic therapy. The intercalated NB-MoO3-x nanoparticles exhibited excellent catalytic activity and fluorescence imaging capability for efficient cancer cell elimination and tumor ablation.
Article
Multidisciplinary Sciences
Tijani Hammedi, Rahma Bensouilah, Abdelkader Ouakouak, Jordi Llorca, Francisco Medina Cabello, Zouhaier Ksibi
Summary: This study investigated the catalytic wet air oxidation of p-hydroxybenzoic acid using Ru-based catalysts supported on various materials. The physicochemical properties of the catalysts were analyzed using various characterization techniques. The presence of cerium was found to enhance the catalytic activity by increasing the surface-active oxygen through a redox process.
Article
Biochemistry & Molecular Biology
Simone Scelfo, Francesco Geobaldo, Raffaele Pirone, Nunzio Russo
Summary: The conversion of common biomasses into value-added chemicals using noble metal-based heterogeneous catalytic systems has been widely studied. In this work, the catalytic activity of perovskite type oxides (LaBO3; B: Fe, Co, Mn) for the conversion of D-glucose into C6 aldaric acid, lactic acid and levulinic acid has been investigated. The results show that LaMnO3 exhibited the best catalytic activity, achieving the highest yield of levulinic acid.
CARBOHYDRATE RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Yuhang Zhao, Radwan M. Sarhan, Alberto Eljarrat, Zdravko Kochovski, Christoph Koch, Bernd Schmidt, Wouter Koopman, Yan Lu
Summary: Bimetallic nanostructures can generate a new type of photo-enhanced nanoreactors by utilizing photo-generated heat to accelerate catalytic reactions. The study demonstrates that the photothermal conversion of Au-Pd nanorods can be improved by coating with polydopamine or TiO2, resulting in increased reaction rates.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Gauravjyoti D. Kalita, Podma P. Sarmah, Golap Kalita, Pankaj Das
Summary: A facile ligand-assisted approach was used to synthesize bimetallic Au-Pd nanoparticles with a tunable core@shell structure. The Au-Pd materials exhibited superior performance in two important reactions, with the Pd-core-Au-shell structure showing higher activity compared to the Au-core-Pd-shell structure.
NANOSCALE ADVANCES
(2021)
Article
Engineering, Environmental
Lin-Feng Zhai, Zi-Xu Chen, Jia-Xiang Qi, Min Sun
Summary: Mn-doping strategy is effective in enhancing the catalytic activity of MoO2 by modifying its structure, promoting electron transfer and surface reactions, thus improving the activity towards electrocatalytic wet air oxidation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Zhoutian Ding, Chun Liu, Baogang Yang, Chao Ding, Shuai Mao, Mingxing Shi, Xianyong Hong, Fengyun Wang, Mingzhu Xia
Summary: In this study, N-doped perovskite La2CuO4 (N-LCO(M)) was synthesized using the sol-gel rapid calcination method with melamine as the N source/ligand, and applied for the catalytic wet air oxidation (CWAO) of high-concentration phenol-containing simulated wastewater. The results showed that N-LCO(M) exhibited enhanced phenol degradation efficiency, with a COD degradation efficiency of 87.9% achieved in simulated wastewater containing 8000 mg/L phenol, compared to only 43.8% for undoped LCO prepared with citric acid as the ligand (LCO(CA)). Systematic characterizations and density functional theory (DFT) calculations verified that N doping favored the formation of more oxygen vacancies and facilitated charge transfer, thus enhancing the adsorption of O2 and promoting the redox cycle of Cu2+/Cu1+, leading to the more exhaustive degradation of phenol. The proposed CWAO technique was proven to be a green and promising wastewater treatment method, with the toxicity of the intermediate products significantly reduced.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)