Article
Environmental Sciences
Yimin Zhang, Jingkun Lou, Leliang Wu, Minghua Nie, Caixia Yan, Mingjun Ding, Peng Wang, Hua Zhang
Summary: The study showed that the activation of H2O2 with minute Cu2+ and HCO3- could efficiently degrade organic pollutants, with acetaminophen completely eliminated within 10 minutes and the generated ROS facilitating organic degradation. Additionally, the presence of Cu3+ was deduced, and CuCO3 (aq) was identified as the main complex for ROS and Cu3+ formation, contributing to the removal of organic pollutants.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Multidisciplinary
Tian-Jiao Jiang, Chao Xie, Huai-De Peng, Bo Lei, Qing-Qing Chen, Gang Li, Cai-Wu Luo
Summary: The study introduced a novel water treatment technology utilizing non-metal catalyst O/g-C3N4 to activate H2O2 for organic contaminants removal in the dark. O/g-C3N4 catalyst exhibited high specific surface area and many defect sites, contributing to enhanced degradation of organic pollutants in the HCO3--H2O2-O/g-C3N4 system.
Article
Environmental Sciences
Nestor A. Urbina-Suarez, Christian Rivera-Caicedo, Angel Dario Gonzalez-Delgado, Andres F. Barajas-Solano, Fiderman Machuca-Martinez
Summary: The research focuses on the use of advanced oxidation process (AOPs) with hydrogen peroxide (H2O2) and sodium bicarbonate (NaHCO3) for the treatment of tannery wastewater. The optimal process conditions for removing different compounds were found to be NaHCO3 1 M, H2O2 2 M, and 60 degrees C, with high removal efficiencies for color and ammoniacal nitrogen. This study concludes that AOPs using H2O2 and NaHCO3 are recommended for effective removal of color and ammoniacal nitrogen in tannery wastewater.
Review
Chemistry, Physical
Ling Xin, Jiwei Hu, Yiqiu Xiang, Caifang Li, Liya Fu, Qiuhua Li, Xionghui Wei
Summary: Advanced oxidation technology, such as fenton-like reagent oxidation and ozone oxidation, is crucial for degrading organic pollutants. Fenton-like reactions are characterized by their low cost, simplicity, thoroughness, and lack of secondary pollution. Materials like graphene, carbon nanotubes, and fullerenes play a significant role in enhancing the catalytic effect of fenton-like catalysts.
Article
Chemistry, Physical
Huijie Dong, Xianjie Feng, Yu Guo, Zihui Jia, Xueying Zhang, Aihua Xu, Xiaoxia Li
Summary: The cobalt nanoparticles encapsulated in nitrogen-doped carbon nanotubes, as a novel catalyst, showed excellent catalytic performance for acid orange 7 degradation in the bicarbonate-activated hydrogen peroxide system. It exhibited high stability against cobalt ions leaching and proposed a activation mechanism with superoxide ion and single oxygen as the dominant reactive species from H2O2 decomposition by the synergistic effect of Co(0) and N species.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Electrochemistry
Haiyan Ye, Long Yang, Xiaoqin Nie, Kun Liu, Shan Yang, Yong Zhou, Faqin Dong, Huichao He, Huaming Yang
Summary: In this work, an electrochemical cell using graphite electrodes and HCO3--containing aqueous electrolyte has been assembled for dual-functional water splitting and electro-Fenton-like degradation of organic pollutants, demonstrating promising application prospects in H2O2 synthesis and environmental remediation in alkaline solution.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Chemical
Min Lei, Qian Gao, Kemeng Zhou, Parikshit Gogoi, Jing Liu, Jiabao Wang, Hainong Song, Shuangfei Wang, Xinliang Liu
Summary: A catalytic system using PMA and H2O2 was developed for degrading 4-CP, resulting in complete conversion of 4-CP into other AOX and CO2/H2O, with PMA promoting free radical formation and showing exceptional efficiency in 4-CP degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Patricio J. Espinoza-Montero, Carolina Burneo, Amanda Cevallos, G. Xavier Castillo-Cabrera, Sofia Penafiel-Vicuna, Carlos Martinez-Huitle, Lenys Fernandez, Jose R. Mora
Summary: This mini-review summarizes the synthesis methods of different generations of Fe-TAML, explains the mechanism of action of Fe-TAML/H2O2 compound, and analyzes the recent studies on its application in degrading various pollutants in aqueous media.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Paramdeep Kaur, Sneha Singh, Deepeka, Vinita Babbar, Vinod Kumar, K. B. Tikoo, Anupama Kaushik, Sonal Singhal
Summary: This study focuses on the utilization of transition metal doped strontium hexagonal ferrites as catalysts for contaminant degradation, with SrMnFe11O19 showing the best performance. The successful synthesis of the catalyst and its effectiveness in oxidizing model pollutants using different oxidants were demonstrated through various analytical techniques. The results indicate that potassium peroxymonosulphate (PMS) is a more efficient oxidant compared to hydrogen peroxide (HP) due to its wider pH range, higher selectivity, and independence from external light sources for activation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Yang-Yang Yu, Wen-Zhu Quan, Yuanyuan Cao, Qijian Niu, Yilin Lu, Xiang Xiao, Liang Cheng
Summary: A graphene-supported cobalt catalyst was synthesized to activate H2O2 and generate singlet oxygen (1O2) with high efficiency and selectivity. The Co-N-graphene catalyst selectively catalyzed the production of 1O2 associated with superoxide radical (O2-) as the intermediate, leading to excellent degradation efficiency of organic pollutants.
Article
Chemistry, Physical
Yingying Yang, Honglei Fan, Tianbin Wu, Guanying Yang, Buxing Han
Summary: Phenol in waste water poses a threat to human health and is resistant to natural decomposition. In this study, tungstate ionic liquids were designed and prepared, and it was found that dodecyltrimethylammonium tungstate could efficiently catalyze the degradation of phenol into gases and water under mild conditions. The tungstate anion exhibited excellent catalytic oxidative activity, and the long carbon chain group connected with the cation of the ionic liquid facilitated the complete degradation of phenol at mild conditions. Increasing the amount of hydrogen peroxide enhanced the total degradation of phenol. Furthermore, the ionic liquid showed excellent thermal stability and could be reused. This work presents a novel strategy for the efficient treatment of phenol-containing waste water.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Yangyang Yang, Lei Shi, Jingkai Lin, Panpan Zhang, Kunsheng Hu, Shuang Meng, Peng Zhou, Xiaoguang Duan, Hongqi Sun, Shaobin Wang
Summary: In this study, a magnetic FeOx@MnO2@SiO2 micromotor with multiple functions was designed, which demonstrated its catalytic performance in the activation of H2O2/peroxymonosulfate (PMS) for sustained motion and organic degradation. The correlations between catalytic efficiency and motion behavior/mechanism were also revealed.
Article
Chemistry, Applied
Yuree Wandee, Dudsadee Uttapap, Petra Mischnick, Vilai Rungsardthong
Summary: Different types of pectin molecules, extracted with different methods, can produce pectic-oligosaccharides (POS) with various sizes and structures under specific degradation conditions. Changes in processing conditions can affect the yield and average size of POS. The results confirm the existence of several POS species with different sizes and structures.
Article
Engineering, Environmental
Shanshan Dong, Yasu Gong, Zhenxing Zeng, Suhua Chen, Jing Ye, Zhenyu Wang, Dionysios D. Dionysiou
Summary: Removing refractory organic pollutants in real water using photocatalysis is challenging due to the quenching effect of dissolved organic matter (DOM) on photogenerated holes. This study presents a hydrogen bonding strategy to prevent hole quenching and even promote the photocatalytic degradation of refractory organic pollutants by forming hydrogen bonds between DOM and a hydroxylated S-scheme heterojunction photocatalyst. The formed hydrogen network stabilizes the excited-state of DOM and improves electron-hole separation, leading to the generation of more reactive oxygen species for pollutant removal.
Article
Food Science & Technology
Davide Ferrigo, Valentina Scarpino, Francesca Vanara, Roberto Causin, Alessandro Raiola, Massimo Blandino
Summary: This study examined the effect of H2O2-induced oxidative stress on fungal growth and mycotoxin production in Fusarium proliferatum and Fusarium subglutinans. The results showed that H2O2 could affect fungal growth and mycotoxin stability in these fungi.
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)