Article
Engineering, Chemical
Ziyi Xiao, Rui Wu, Tingting Shu, Yingxi Wang, Ling Li
Summary: In order to improve the catalytic performance of MIL-101, cobalt-doped MIL-101(Fe,Co) was synthesized through solvothermal method. The optimal catalytic activity was achieved by adjusting the cobalt doping ratio to obtain MIL-101(Fe,Co20%). The experimental results showed that MIL-101(Fe,Co20%) had much better catalytic performance than MIL-101(Fe) and could degrade more than 99% of RhB within 15 minutes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ning Chen, Yu Zeng, Tai Li, Peixin Cui, Dionysios D. Dionysiou, Xiaolei Wang, Cun Liu, Guodong Fang, Chengcheng Ding, Yuan Zhao, Juan Gao, Yujun Wang, Dongmei Zhou
Summary: Phosphorus and cobalt co-doped C3N5 (Co-xP-C3N5) has been developed for peroxymonosulfate (PMS) activation and 2,4,4'-trichlorobiphenyl (PCB28) degradation. Phosphorus doping induces the formation of Co-P and Co-N-P species, which increase the content of coordinated Co and improve catalytic performance. This finding provides a new strategy for enhancing the performance of single atom-based catalysts.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Minghua Li, Jinxing Chen, Weiwei Wu, Shuangli Wu, Lili Xu, Shaojun Dong
Summary: Atomically dispersed catalysts have been extensively studied for their high catalytic activity and atom utilization. Single-atom catalysts have made significant progress in degrading emerging organic contaminants using peroxymonosulfate activation. However, the construction of atomically dispersed catalysts with diatomic/multiatomic metal active sites for pollutant degradation through PMS activation is rarely reported.
Article
Chemistry, Multidisciplinary
Peter J. H. Williams, Charles Killeen, Ian C. Chagunda, Brett Henderson, Sofia Donnecke, Wil Munro, Jaspreet Sidhu, Denaisha Kraft, David A. Harrington, J. Scott McIndoe
Summary: Continuous addition kinetic elucidation (CAKE) is a method to address the challenges in catalytic reactions by continuously injecting a catalyst and monitoring reaction progress, reducing workload and improving reproducibility.
Article
Engineering, Environmental
Xiaowan Li, Jun Ma, Yufei Gao, Xitao Liu, Yi Wei, Zongjun Liang
Summary: The study demonstrates that p-benzoquinone can accelerate the Fe(III)/Fe(II) cycle, promote atrazine degradation in the Fe(III)/PMS system, and propose a degradation mechanism based on LC-MS detection.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jiawen Zhao, Pei Zhong, Wuhui Luo, Shuwang Zhang, Shuang Xu, Qianqian Yu, Xinhong Qiu
Summary: This study found that environmentally-occurring Fe(II)-Al layered double hydroxides with an inherent Fe (II)-OH structure can effectively catalyze peroxymonosulfate and degrade Bisphenol A, providing a new perspective for in-situ chemical oxidation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Jie Li, Hua Yin, Haoyu Luo, Yingchao Li, Xufa Rong, Zhi Dang
Summary: In this study, the synergistic action of O2- and 1O2 produced by PMS activation was successfully utilized to degrade PCB 28. The important role of Fe3C in generating O2- and 1O2 for PCB 28 decontamination was clarified, providing insights for the design of catalysts in polychlorinated biphenyl pollution remediation.
Article
Chemistry, Physical
Yan Fan, Wenyuan Zhang, Kuanshi He, Lei Wang, Qizhao Wang, Jiacheng Liu
Summary: In this study, a modified metal organic framework (MOF) was used to enhance the efficiency of photocatalytic degradation of tetracycline hydrochloride. The modified material showed high removal rate and fast degradation under a wide pH range, which can be attributed to the ligand-to-metal charge transfer.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Taoyu Yang, Deyou Yu, Dong Wang, Tao Yang, Zexiong Li, Minghua Wu, Michal Petru, John Crittenden
Summary: The Fenton-like performance of Fe-MOFs was improved by manipulating the structure of iron-oxo nodes with Fe(II) substitution, resulting in a material with stronger active sites and higher density of Fe(III) coordinatively unsaturated iron centers. This enhancement facilitated the rapid activation of H2O2 and efficient degradation of pollutants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Zhiyan Huang, Pingxiao Wu, Chenhui Liu, Meiqing Chen, Shanshan Yang, Zhi Dang, Nengwu Zhu
Summary: This study investigated the high activity of graphene layers encapsulated Fe-N-C catalysts in Fenton-like reaction. The Fe2Mn1-Fe@NCs catalyst showed the optimal catalytic degradation performance, with pyrrolic N and Fe-pyridinic N-C playing important roles in promoting the catalytic degradation. The findings provide insights for the design of other Fe-N-C catalysts and efficient organic pollution remediation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xiao Zhou, Yabo Wang, Xuqian Wang, Yongkui Zhang
Summary: In this study, iron-manganese layered double oxides (LDO) were synthesized and used as catalysts for peroxymonosulfate (PMS) activation in order to degrade sulfathiazole (STZ). The well-dispersed structure and synergistic effect between bimetallic oxides contributed to the high removal efficiency of STZ. The degradation mechanisms involved radical and non-radical pathways.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hai-long Li, Zheng-wang Zhu, Songtao Li, Shuai Bao, Chun-ming Liu, Shiming Zhang, Hai-feng Zhang
Summary: Fe-based metallic glasses can efficiently degrade acid orange II by activating persulfate, showing promising potential for wastewater treatment. The experimental results demonstrate a two-step degradation mechanism and the effects of experimental parameters on the decolorization efficiency. This study provides new insights into the application of Fe-based metallic glasses as catalysts in wastewater treatment.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Engineering, Chemical
Liwei Yang, Yin Wei, Yaqi Peng, Yang Liu, Zhou Shu, Yansong Wang, Qingli Meng, Chuanliang Zhao, Hongmei Zhao, Fashan Yang, Bo Lai
Summary: This study fabricated a carbon-based bimetallic material (Fe1Co2@C) for efficient degradation and utilization of peroxymonosulfate (PMS) to treat atrazine (ATZ) water pollutant. The material exhibited superior performance compared to monometallic materials (Fe@C and Co@C). The research investigated the effects of various factors on the reaction and proposed the possible degradation pathways of ATZ. The study provides new insights into water treatment using carbon-based bimetallic catalysts.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Fangling Qin, Lin Zhang, Lei Tong, Kun Zhang, Wenzhao Nan, Jingyi Wang, Menghan Li
Summary: This study investigated an enhanced photochemical Fenton-like system for the degradation of antibiotic sulfadiazine (SDZ). The results showed that the UV/Fe(II)/SC system had the highest degradation rate and efficiency. Dissolved substances such as HCO3-, SO42-, and NO3- in the water environment inhibited the degradation of SDZ, and the concentration of SDZ and high concentration of humic acid (HA) decreased the degradation rate of the target compound. Four degradation pathways were proposed based on the identification of photodegradation products of SDZ.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Osama Abuzalat, Hesham Tantawy, Ahmad Baraka
Summary: Cobalt-terephthalate metal-organic frameworks (Co-BDC MOFs) with mixed valency states of Co(II) and Co(III) were synthesized and characterized. The Co-BDC MOFs showed efficient catalytic performance in the degradation of methylene blue (MB) through a synergistic catalysis mechanism between Co(II) and Co(III).
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Wenya Peng, Yu Fu, Lingli Wang, Yifan Wang, Yongxia Dong, Ying Huang, Zhaohui Wang
Summary: This study investigated the degradation kinetics and evolution of oxidation byproducts of acid yellow 17 (AY-17) in saline dye wastewater using the UV/PDS system. The research found that Cl- accelerated the degradation of AY-17, but also led to an undesirable increase of absorbable organic halogen (AOX). Liquid chromatography-mass spectrometry (LC-MS/MS) identified several chlorinated byproducts in the UV/PDS system, indicating the role of chloride radicals in the dechlorination and rechlorination of AY-17.
CHINESE CHEMICAL LETTERS
(2021)
Review
Engineering, Environmental
Yongxia Dong, Wenya Peng, Yunjiao Liu, Zhaohui Wang
Summary: Halogenated organic compounds, previously thought to be mainly anthropogenic, can also be formed through photochemical reactions in sunlit surface waters. Halide ions in natural waters may be oxidized to reactive halogen species by photochemistry, leading to reactions with organic substances. The chemical mechanism of halogenation remains complex and challenging to fully understand.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Fei Yang, Bo Sheng, Zhaohui Wang, Ying Xue, Jianshe Liu, Tianyi Ma, Richard Bush, Hrvoje Kusic, Yanbo Zhou
Summary: The study found that the addition of Cl- or Br- did not significantly affect the degradation, mineralization, or accumulation of adsorbable organic halides (AOX). Rates of CV degradation were enhanced by increasing either AA dosage or solution acidity.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Farshid Ghanbari, Aydin Hassani, Stanislaw Waclawek, Zhaohui Wang, Grzegorz Matyszczak, Kun-Yi Andrew Lin, Maryam Dolatabadi
Summary: This study explored the potential of degrading the pharmaceutical pollutant paracetamol in the aqueous environment using Fe2O3 nanoparticles as a catalyst under ultrasound-assisted electro-Fenton conditions. The results showed efficient degradation of paracetamol under specific conditions. Nitrate ions inhibited the degradation process, while chloride ions had minimal impact. The Fe2O3 nanoparticles showed high catalytic activity compared to other conventional transition metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Engineering, Environmental
Yu Fu, Lingli Wang, Wenya Peng, Qingya Fan, Qingchao Li, Yongxia Dong, Yunjiao Liu, Grzegorz Boczkaj, Zhaohui Wang
Summary: The simultaneous conversion of As(III) and Cr(VI) to their less toxic forms is beneficial for the environment and cost-effective. The mechanisms for the oxidation of As(III) and reduction of Cr(VI) through different processes have been explored. Acidity has a positive effect on co-conversion, while the mediated electron transfer process is not significantly affected by dissolved oxygen. Organic compounds may influence the conversion process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
Lingli Wang, Xu Lan, Wenya Peng, Zhaohui Wang
Summary: This review clarifies common mistakes and misinterpretations present in the literature regarding the identification of reactive radical species using quenching and electron paramagnetic resonance (EPR) tests. It aims to help researchers avoid errors when investigating catalytic oxidative mechanisms with these tests.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Tong Wang, Jie He, Jian Lu, Yi Zhou, Zhaohui Wang, Yanbo Zhou
Summary: Improper use of pharmaceuticals and personal care products has led to severe water contamination, calling for the development of efficient and environmentally friendly technologies for removal. Carbon-based composites, such as modified activated carbon and functionalized biochar, show great potential as adsorbents. This review summarizes the environmental risks of pharmaceuticals and personal care products and discusses the recent progress in using carbon-based adsorbents for their removal from water. The exceptional adsorption performance of carbon-based composites is attributed to their pore structure, large specific surface area, surface functional groups, aromatic structures, and cooperative materials. Graphene and carbon nanotubes composites exhibit superior adsorption ability and various adsorption mechanisms.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Shijie Li, Chunchun Wang, Yanping Liu, Mingjie Cai, Yaning Wang, Huiqiu Zhang, Yang Guo, Wei Zhao, Zhaohui Wang, Xiaobo Chen
Summary: Novel Bi2Sn2O7/Bi2MoO6 step-scheme heterojunctions were fabricated, which could effectively degrade tetracycline antibiotics and showed no toxicity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Engineering, Environmental
Kirill Fedorov, Kumaravel Dinesh, Xun Sun, Reza Darvishi Cheshmeh Soltani, Zhaohui Wang, Shirish Sonawane, Grzegorz Boczkaj
Summary: High-performance water treatment systems based on cavitational processes have gained increasing interest in the scientific community. Hydrodynamic cavitation has been proven as an effective alternative, reagent-free method for treating various pollutants in water. The combination of cavitation with advanced oxidation processes (AOPs) has shown enhanced oxidation capacity and the ability to degrade persistent contaminants. The synergistic effect between integrated technologies in hybrid processes contributes to their improved performance. This review discusses principles, mechanisms, and factors influencing the effectiveness of cavitation-AOP coupling, as well as the economic feasibility of these hybrid techniques in large-scale wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Engineering, Environmental
Ying Xue, Zhaohui Wang, Ravi Naidu, Richard Bush, Fei Yang, Jianshe Liu, Manhong Huang
Summary: This review reconciles conflicting data on the degradation of pollutants in the presence of halides by peroxygens-based AOPs. Halide ions were found to affect contaminants' degradation either negatively or positively, depending on various factors such as substrate properties and operating parameters. Further research is needed to understand the effect of halides on the simultaneous removal of multiple organic pollutants. Better AOP technologies should be selected to minimize adverse effects and take advantage of positive effects in order to reduce operating costs and emissions in saline environments.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Lingli Wang, Yu Fu, Qingchao Li, Zhaohui Wang
Summary: This study comprehensively investigates the origin of 5,5-dimethyl-l-pyrroline N-oxide (DMPO) adducts in Cu(II) based advanced oxidation processes (AOPs), and finds that there are other factors contributing to the formation of these adducts in addition to the genuine spin trapping mechanism.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Letter
Engineering, Environmental
Lingli Wang, Zhaohui Wang
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Bo Sheng, Chaoyuan Deng, Yangfan Li, Shijie Xie, Zhaohui Wang, Hua Sheng, Jincai Zhao
Summary: This study investigates the activities of a series of carbon nitride (C3N4)-supported Fe catalysts with different Fe states in photo-Fenton reactions. The results show that the single-atom catalyst favors the generation of O2·- and 1O2, while the catalysts with an abundance of oxide clusters exhibit a higher conversion of H2O2 to OH·. In situ FT-IR studies and theoretical calculations provide further insights into the role of surface hydroxyl in regulating ROS generation.
Article
Environmental Sciences
Lingli Wang, Qingchao Li, Yu Fu, Zhaohui Wang, Huai-yong Zhu, Mika Sillanpaa
Summary: Electron paramagnetic resonance (EPR) coupled with the spin trapping technique is commonly used to identify radicals and investigate reaction mechanisms in advanced oxidation processes (AOPs). However, unexpected spin trapping artifacts in highly oxidizing environments can lead to misinterpretation of AOPs mechanisms. This study reveals previously unrevealed reactions between perox-ydisulfate (PDS) and 5,5-dimethyl-1-pyrroline N-oxide (DMPO) or N-tert-butyl-alpha-phenylnitrone (PBN), and proposes the formation routes of the detectable adducts. The findings emphasize the importance of selecting appropriate spin traps and conducting control tests when studying catalytic oxidation mechanisms under highly oxidizing conditions.
Article
Chemistry, Physical
Bo Sheng, Chaoyuan Deng, Yangfan Li, Shijie Xie, Zhaohui Wang, Hua Sheng, Jincai Zhao
Summary: In this study, a series of carbon nitride (C3N4)-supported Fe catalysts with different morphologies were fabricated and their activities in photo-Fenton reactions were evaluated. It was found that the single-atom catalyst favored the generation of O2 center dot- and 1O2, while catalysts with oxide clusters exhibited a higher conversion of H2O2 to center dot OH. In situ studies revealed the importance of surface hydroxylation in regulating ROS generation.
