Article
Chemistry, Physical
Bismark Sarkodie, Yanjie Hu, Wei Bi, Jiechao Jiang, Chunzhong Li
Summary: Tailoring the configuration at metal and support interface can effectively enhance the catalytic performance of Cu/ZnO catalyst for CO oxidation. The incorporation of active Cu+ species in CuxO-Cu/ZnO catalyst significantly reduces the activation energy and improves the oxygen mobility and vacancies, leading to enhanced catalytic activity. The critical role of active Cu+ sites in CuxO-Cu/ZnO was further confirmed by In-situ DRIFTS.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Lijuan Yue, Liangyun Hao, Junkai Zhang, Xijun Piao, Chunguang Chen
Summary: Spinel-type Co2MnO4 catalyst is successfully synthesized and used as an efficient activator for peroxymonosulfate (PMS) to degrade phenol in water. The Co2MnO4/PMS system exhibits excellent catalytic activity due to its unique porous structure, oxygen vacancies, and the synergistic effect of Co and Mn. Sulfate radicals (SO4•-) and singlet oxygen (1O2) both contribute to phenol degradation, with 1O2 being the dominant reactive species provided by the oxygen vacancies. The system shows good resistance to common inorganic anions and can be reused due to the strong Co/Mn interaction.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Zhi Jiang, Yan Xie, Chaofang Li, Junhao Zheng, Mengying Si, Ruiyang Xiao, Qi Liao, Weichun Yang
Summary: In this study, a structure-tailored nano-CuO catalyst was successfully synthesized and applied for efficient degradation of electron rich organic pollutants. The dominant role of CuO-NC in non-radical catalysis was revealed, and a degradation pathway for the target pollutant was proposed. Furthermore, CuO-NC showed good reusability and applicability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Siyu Xu, Liangtao Wen, Chen Yu, Song Li, Jingchun Tang
Summary: In this study, a novel metallic oxide catalyst MnFe2O4@biochar composite was synthesized and used to activate peroxymonosulfate (PMS) for efficient degradation of bisphenol A. The composite showed homogeneously distributed metal oxide particles, strong magnetism, and wide adaptability, effectively removing organic pollutants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Shuai Shao, Xiaoshuai Li, Zhimin Gong, Bo Fan, Mengjie Wang, Jianbiao Peng, Kun Lu, Shixiang Gao
Summary: A series of magnetic Fe3O4@PDAn-CuxO composites with adjustable oxygen vacancies were successfully prepared by dopamine self-polymerization between Cu-Fe bimetallic composites. The catalysts exhibited excellent performance in degrading the antimicrobial contaminant triclosan (TCS) by activating peroxydisulfate. Fe3O4@PDA1.0-CuxO possessed the highest catalytic activity due to its high oxygen vacancies content. The catalyst showed great long-term stability and could be easily recovered by magnetic separation, making it a sustainable strategy for environmental-friendly remediation technologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Xue Huang, Yunqi Wang, Qingguo Wang, Jing Zhang
Summary: This work successfully synthesized a catalyst with high surface area and Cu(0) particles encapsulated in a hierarchically mesoporous structure. The catalyst exhibited high efficiency for adsorption and degradation of tetracycline hydrochloride, with wide pH adaptation and great recycled performance. The oxidative effectiveness was due to both radical and non-radical pathways.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Li Li, Zhi Huang, Yanying Liu, Ziqi Zhu, Mingjun Xu, Wenxuan Wei, Qian Zhang, Junming Hong
Summary: Novel porous Mn-Fe nanocubes with abundant oxygen vacancies were synthesized through annealing at H-2 atmosphere for the first time. They exhibited excellent performance for the degradation of bisphenol A and the possible degradation pathways were proposed.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Chaoqun Li, Ziqing Zhao, Xingyue Wang, MingYu Li, Jingjing Jiang, Shuangshi Dong
Summary: This study synthesized a carbon quantum dots-modified bismuth oxybromide (CQDs/BiOBr) catalyst with highly exposed facets and surface oxygen vacancies through a two-step hydrothermal method. The introduction of CQDs promoted the growth of BiOBr with {001} crystal facets and induced the in situ formation of oxygen vacancies. The dual functionality of CQDs enabled simultaneous removal of TCH and Cr(VI) under visible light irradiation, with significantly higher photocatalytic reaction rate constants in the coexisting pollutant system compared to the mono-pollutant systems.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Cai-Wu Luo, Lei Cai, Chao Xie, Gang Li, Tian-Jiao Jiang
Summary: The presence of sulfur vacancies in MoS2 catalysts enhances their catalytic activity in Fenton-like reactions for the removal of organic pollutants in wastewater. The annealing temperature and pH value significantly influence the performance of the catalysts. The reaction system contains both radical and non-radical species.
Article
Chemistry, Multidisciplinary
Yanlin Wang, Xinxin Liu, Shaokui Pan, Qishen Zhou, Jun Shu
Summary: The high temperature stability of zirconia crystals is improved by regulating the content of the stabilizer Y2O3. The study focused on the color instability of blue cubic zirconia at high temperatures. The results showed that the increase in oxygen vacancies was the reason for the discoloration, which was attributed to the higher amount of Y2O3 stabilizers in the crystals.
Article
Engineering, Environmental
Ping Liang, Dingding Meng, Yi Liang, Zheng Wang, Chi Zhang, Shaobin Wang, Zhonghua Zhang
Summary: This study prepared cation deficient LaCoO3-delta perovskite oxides to regulate their catalytic activity towards peroxymonosulfate (PMS) activation. It was found that B-site cation deficiency promotes catalytic performance and can efficiently mineralize organic compounds.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Yue Wang, Yan Lin, Chunping Yang, Shaohua Wu, Xintao Fu, Xiang Li
Summary: This study reports the regulation of non-radical pathways in peroxymonosulfate (PMS) activation by carbon catalysts doped with iron and nitrogen. The calcination temperature of the catalysts is found to play a crucial role in switching the non-radical activation routes and enhancing the catalytic activity. The study provides a facile strategy for regulating PMS non-radical pathways for the treatment of complicated wastewater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Hao Zhang, Yunxiong Zeng, Xinqing Wang, Xingyu Zhan, Jingcai Xu, Ao Jin, Bo Hong
Summary: Optimizing surface atom properties by regulating electron configuration is a promising strategy to improve the separation of electron-hole pairs in carbon nitride. The study prepared sea urchin carbon nitride with C-v and O-s mediated electronic structures, which exhibited high photocatalytic activity and stability towards tetracycline. In addition, crucial factors affecting photoactivity and the photodegradation mechanism were investigated.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Binghong Song, Caiting Li, Xueyu Du, Shanhong Li, Yindi Zhang, Yue Lyu, Qihao Zhou
Summary: Cu1Ce3 catalyst shows superior toluene oxidation activity with high selectivity and stability, making it promising for practical applications. The catalytic oxidation of toluene over Cu1Ce3 catalyst involves two main pathways through benzyl alcohol and benzoic acid.
Review
Engineering, Chemical
Si Li, Chaomeng Dai, Yanping Duan, Zhi Li, Zhibo Zhang, Xiaoying Lai, Jixiang Li, Jiajun Hu, Lang Zhou, Yalei Zhang, Shuguang Liu, Rongbing Fu
Summary: This study comprehensively summarizes and examines the mechanisms of PAA-based NOPs, including their activation mechanisms, influencing factors, identification methods, and oxidation characteristics. The study also investigates the triggering mechanism and provides recommendations for controlling and regulating the occurrence of PAA-based NOPs. Additionally, the potential applications and future challenges of PAA-based NOPs in aquatic environments are highlighted.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)