Article
Chemistry, Multidisciplinary
Xiaofan Xiang, Laiyan Wu, Junjiang Zhu, Jiazhou Li, Xi Liao, Hongcheng Huang, Jiajie Fan, Kangle Lv
Summary: The study successfully degraded sulfadiazine (SDZ), a typical sulfonamides antibiotic, using photocatalytic oxidation technology. It was found that TiO2 nanosheets exhibited better photoreactivity towards SDZ degradation. The research also revealed the possible degradation pathways of SDZ and the promising application prospects of TiO2-NSs in removing SDZ.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Li Sun, Quan Zhou, Jiaheng Mao, Xingyu Ouyang, Zhigang Yuan, Xiaoxiang Song, Wenbang Gong, Shunqi Mei, Wei Xu
Summary: Water pollution can be treated through the photocatalytic reaction of TiO2 or TiO2 compounds. In this study, Fe3O4 and Fe3O4@TiO2 composite photocatalysts were prepared using a solvothermal method, and it was found that Fe3O4@TiO2 can reduce the band gap and maintain a certain proportion of high-energy facet exposure. The photocatalytic degradation experiment demonstrated that Fe3O4@TiO2 can significantly improve the degradation efficiency of Acid Red 73 and achieve higher degradation rate after self-cleaning treatment.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Jian Pan, Mengqian Qian, Yu Li, Haiqiang Wang, Baohong Guan
Summary: Metal-free catalysts play a crucial role in water treatment by effectively removing harmful quinoline derivatives and reducing chemical oxygen demand. This study demonstrates the use of fluorinated ceramic honeycomb as a catalyst for stable catalytic ozonation, generating free reactive oxygen species and efficiently degrading the target compound.
Article
Environmental Sciences
Jian Pan, Mengqian Qian, Yu Li, Haiqiang Wang, Baohong Guan
Summary: A metal-free catalyst, fluorinated ceramic honeycomb, was prepared to catalyze the ozonation of 4-methylquinoline with high efficiency in degrading and removing COD. The catalyst surface contains abundant active acid sites, enhancing the ozone decomposition to generate reactive oxygen species, with free hydroxyl radicals playing a major role in the degradation and COD removal of 4-Meq.
Article
Materials Science, Ceramics
Yong Wang, Guoqiang Tan, Shuaijun Feng, Yun Liu, Wenlong Liu, Ao Xia, Huijun Ren, Long Lv
Summary: (English Summary:)
In this study, a (001)TiO2/Ti3C2 MXene heterojunction photocatalyst was prepared using the hydrothermal oxidation method. The formation of TiO2 surface hetero-junctions, Schottky junctions, and surface plasmon resonance effect of plasma Ti3C2 MXene promoted the effective separation of photoexcited electrons and holes. The photocatalyst showed high degradation rates for tetracycline under near infrared light and full spectrum irradiation. This work provides a valuable reference for the design of MXene-based full spectrum photocatalysts.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Longxiao Yang, Ningdong Feng, Feng Deng
Summary: In this study, Al-doped TiO2 photocatalysts with optimized {001} facet structure were prepared, showing significantly enhanced photocatalytic performance. The formation of F-Ti2Al structure was confirmed by NMR and ESR experiments, and it was identified as the active site responsible for the improved photocatalytic performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Environmental Sciences
Jianping Shang, Yu Jiang, Xiaoping Qin, Bin Zhao, Xuefei Li
Summary: The study modified attapulgite to prepare TiO2/ATP nanocomposite with high catalytic activity for the treatment of printing and dyeing wastewater, showing efficient degradation of methylene blue. Detailed research has been conducted on reaction conditions and kinetics.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Yiqing Li, Manqin Fu, Xiaoxia Zhang, Chun He, Dingsheng Chen, Ya Xiong, Liqing Guo, Shuanghong Tian
Summary: In this study, CuOx nanoclusters supported on anatase TiO2 nanotubes (NT) were successfully prepared, showing high reactivity in catalytic applications. CuOx/NT catalyst demonstrated a higher reaction rate constant in ozonation compared to NT catalyst and ozonation alone, and it generated abundant reactive oxygen species. The results provide valuable insights for designing and preparing highly reactive nanoclusters of metal oxide catalysts for catalytic ozonation of refractory organic pollutants.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Huifen Yin, Jing Liu, HanLu Shi, Lei Sun, Xiangjuan Yuan, Dongsheng Xia
Summary: A series of Ag2CO3 doping g-C3N4 composites were synthesized by a precipitation method, and the effects of hydrothermal temperature on their structure and performance were investigated. The decoration of Ag2CO3 provided more active sites, improving the catalytic ozonation performance. The AgCN0.4-10 0 composite showed the best performance and good reusability.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Saif M. H. Qaid, Hamid M. Ghaithan, Huda S. Bawazir, Abrar F. Bin Ajaj, Khulod K. AlHarbi, Abdullah S. Aldwayyan
Summary: This study aims to synthesize various TiO2 nanocrystals, including nanosheets, nanorods, and nanoparticles, using a rapid hydrothermal method. The synthesized TiO2 nanocrystals exhibit high purity and exposed high-energy facets, resulting in high reactivity and large surface area. The {001} facets dominate in the nanosheets and nanorods, accounting for approximately 80% and 85% of the outer surface area, respectively.
Article
Environmental Sciences
Jianchao Ma, Siyu Zhang, Xiaoguang Duan, Yuxin Wang, Danlei Wu, Jin Pang, Xin Wang, Shaobin Wang
Summary: The catalytic activation of different oxidants by MnO2 for degradation of SCP was investigated, with different crystalline phases of MnO2 showing varying effects on the catalytic ozonation of SCP. The study found that O-1(2) and ·OH were more significant for SCP degradation, with their contributions to the catalytic ozonation of SCP being 63.16% and 28.07%, respectively. The study also highlighted the importance of oxygen vacancies, specific surface area, and exposure of MnO6 edges in facilitating the activation of O-3 for O-1(2) and ·OH productions and SCP degradation.
Article
Chemistry, Multidisciplinary
Qiao Tang, Jiang Wu, Donghoon Kim, Carlos Franco, Anastasia Terzopoulou, Andrea Veciana, Josep Puigmarti-Luis, Xiang-Zhong Chen, Bradley J. Nelson, Salvador Pane
Summary: Piezocatalysis has gained attention for its potential in addressing energy shortages and environmental pollution. However, its efficiency is limited. Researchers successfully synthesized BaTiO3 nanosheets with exposed polar facets to enhance piezocatalytic activity. The nanosheets exhibited superior degradation rate of organic pollutants and hydrogen production capability, providing a new strategy for designing high-performance piezocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Chemical
Pengwei Yan, Zhonglin Chen, Shuyu Wang, Yanchi Zhou, Jimin Shen, Shengxin Zhao, Lei Yuan, Weiqiang Wang, Xiaotong Xu, Xinwei Zhu, Jing Kang
Summary: This study investigated the generation mechanism of iodinated by-products during catalytic ozonation of iohexol, and evaluated the impact of various factors on their generation. The concentrations of iodinated by-products in actual water were relatively low, and the species with one iodide atom had significantly higher generation concentrations than those with more iodine atoms.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Applied
Ke Wang, Shihui He, Yunzhi Lin, Xun Chen, Wenxin Dai, Xianzhi Fu
Summary: In this study, two Ru/TiO2 samples with different TiO2 facets were prepared and their behavior in the photo-thermal catalytic CO2 + H-2 reaction was investigated. The sample with 67% {001} facet displayed better thermal catalytic activity than the sample with 30% {001} facet. After H-2 pretreatment, both samples showed enhanced catalytic activities, with the 67% {001} facet sample exhibiting the highest activity. Under UV irradiation, the H-2-treated 67% {001} facet sample showed significant photo-promoted thermal catalytic activity and stability.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Manman Li, Kunlun Yang, Xin Huang, Shiguang Liu, Yifan Jia, Peng Gu, Hengfeng Miao
Summary: In this study, a modified flat microfiltration ceramic membrane (Mn-Fe-CM) was used to catalyze ozone (O-3) for the oxidative degradation of trimethoprim (TMP). The Mn-Fe-CM showed improved catalytic performance for O-3 compared to the conventional CM. The degradation and mineralization efficiencies of TMP were enhanced in the O-3/Mn-Fe-CM system. The proposed degradation mechanism involved hydroxylation, carbonylation, demethoxylation, and deamination. The O-3/Mn-Fe-CM system exhibited strong catalytic ozonation performance and good anti-membrane fouling ability, making it suitable for surface water treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Da Wang, Yinning He, Na Zhong, Zhiqiao He, Yi Shen, Tao Zeng, Xiaohui Lu, Jun Ma, Shuang Song
Summary: This study successfully achieved the simultaneous photoelectrochemical degradation of organic pollutants, reduction of CO2, and production of H2 using a TiO2 photoanode. The use of chloride during the hydrothermal process enhanced the formation of defects on the TiO2 surface, while calcination further strengthened these features, improving the PEC performance of the TiO2 photoanode.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Xianxian Kong, Qianqian Pan, Shuang Song, Zhiqiao He, Tao Zeng, Yan Yu
Summary: Metal-doped Zr-UiO-66-NH2 catalysts exhibit significant hydrogen evolution performance under simulated solar light, attributed to the metal-to-metal charge-transfer excitation and improved light harvest.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Electrochemistry
Da Wang, Ying Zhu, Weiting Yu, Zhiqiao He, Feilong Dong, Yi Shen, Tao Zeng, Xiaohui Lu, Jun Ma, Lizhang Wang, Shuang Song
Summary: An intrinsic versatile Ag electrode derived in situ from Ag-MOF on Ag foam exhibits remarkable performance in eCO(2)RR to form CO, with 3D dendrite structure promoting mass diffusion, rich edges sites favoring CO2 adsorption and conversion, and highly exposed facet facilitating the desorption of CO.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Jiajie Zhou, Senhui Huang, Zhiqiao He, Shuang Song
Summary: A novel Ti/Sn-SbOx/PbO2-ODP electrode was constructed using a co-electrodeposition method, with the beta-PbO2 layer modified with ODP to enhance water contact angle and electrocatalytic performance for CIP oxidation. The ODP modification significantly improved electrode stability and accelerated life. The enhanced electrocatalytic performance was attributed to improved utilization of hydroxyl radicals and stronger adsorption of CIP due to the hydrophobic surface.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Environmental Sciences
Da Wang, Shiwen Dong, Lingsha Wen, Weiting Yu, Zhiqiao He, Qingqing Guo, Xiaohui Lu, Lizhang Wang, Shuang Song, Jun Ma
Summary: A metal oxide electrode has been developed for electrochemical CO2 reduction reaction, exhibiting superior activity and product selectivity. By synthesizing a hydrocerussite thin film on a Pb substrate, the electrode shows high selectivity and activity towards formic acid production.
Article
Chemistry, Physical
Junjie Xu, Lun Lu, Chao Zhu, Qile Fang, Renlan Liu, Da Wang, Zhiqiao He, Shuang Song, Yi Shen
Summary: Solar energy is the most promising option for mitigating the energy crisis in the future, and can be used in renewable and economical technologies such as water splitting and pollutants degradation. This study investigates the enhancement of photocatalytic performance through defect engineering and the regulation of the conduction band position. The experimental results demonstrate that the material with 5% defects exhibits superior photocatalytic activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Da Wang, Yinning He, Yi Chen, Fan Yang, Zhiqiao He, Tao Zeng, Xiaohui Lu, Lizhang Wang, Shuang Song, Jun Ma
Summary: In this study, a new type of hybrid material Mn-nCN, composed of manganese oxide (MnO) dispersed on carbon-nitrogen (CN) material, was fabricated as a catalyst for heterogeneous catalytic ozonation (HCO) and showed excellent catalytic performance in degrading refractory organic pollutants. The synergistic effects between MnO and CN, facilitated by the C-N-Mn and C-O-Mn bonds in the catalyst, overcome typical issues such as metal leaching, and promote redox reactions of Mn by promoting electron transfer from cation-pi reactions. The study also demonstrated the involvement of surface hydroxyl groups in ozone decomposition and reactive oxygen species (ROS) production.
Article
Nanoscience & Nanotechnology
Yi Shen, Shasha Liu, Lun Lu, Chao Zhu, Qile Fang, Renlan Liu, Zhiqiao He, Yungui Li, Shuang Song
Summary: In this study, nanoscale TiO2 materials with different types of vacancies were synthesized and it was found that pn-TiO2 containing dual vacancies exhibited higher photocatalytic activity for gaseous toluene removal. The dual vacancies in pn-TiO2 enabled the full utilization of the valence and conduction bands to generate free radicals, leading to synergistic degradation of VOCs, providing a new pathway for catalyst design.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Chemical
Weiting Yu, Dezheng Yang, Rendan Zhu, Luzhen Liu, Yan Yu, Juntao Tang, Zhiqiao He, Jiexu Ye, Shuang Song
Summary: In this study, 2,6-diaminopyridine (2,6-DAP) was used for the first time to functionalize the electrode surface, resulting in a p-Si/Ag/2,6-DAP electrode with high activity and CO selectivity. The optimized potential for CO production was found to be -0.9 V vs RHE, with a Faradaic efficiency of 84.56%. A synergistic mechanism involving the reduction of CO2 by Ag and the adsorption of CO2 by 2,6-DAP was proposed to explain the enhanced catalytic performance of p-Si/Ag/2,6-DAP.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Yinning He, Jiayi Li, Jingyu Tang, Haijun Cheng, Tao Zeng, Zhiqiao He, Da Wang, Lizhang Wang, Shuang Song, Jun Ma
Summary: In this study, N-doped Mn3O4 catalysts were synthesized and applied in heterogeneous catalytic ozonation. The Mn-N structures in the catalysts played a crucial role in facilitating the formation of electron-dense Mn sites, which served as the primary active sites for ozone activation. The catalysts demonstrated excellent performance in pyrazines degradation and odor elimination.
Review
Environmental Sciences
Da Wang, Ying Xing, Juan Li, Feilong Dong, Haijun Cheng, Zhiqiao He, Lizhang Wang, Stefanos Giannakis, Shuang Song, Jun Ma
Summary: This comprehensive study evaluates the effectiveness, mechanisms, and potential risks of direct ozonation processes and ozone-based AOPs in removing various odor compounds from drinking water sources. It also analyzes the impact of operational parameters on odor compound removal and introduces practical combined drinking water treatment methods incorporating ozone and other processes.
Article
Engineering, Environmental
Da Wang, Stefanos Giannakis, Jingyu Tang, Kai Luo, Juntao Tang, Zhiqiao He, Shuang Song, Lizhang Wang
Summary: In this study, magnetic reduced graphene oxide (rGO) encapsulated hexagonal FeTiO3 (FTO@rGO) nanosheets were synthesized for efficient degradation of venlafaxine (VLF) through photo-Fenton processes. The addition of rGO accelerated the migration of photo-generated electrons and improved the Fe2+/Fe3+ cycle, resulting in higher VLF degradation rate. The encapsulation of rGO also reduced Fe leaching and directed H2O2 activation at the FTO@rGO interface. By comprehensively analyzing intermediate products, the degradation pathway of VLF was determined.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Lei Lai, Juntao Tang, Jiaxin Zhu, Da Wang, Zhiqiao He, Shuang Song
Summary: A moisture-resistant TiO2-based catalyst has been successfully synthesized in this study, which shows higher activity and stability compared to commercial catalysts in the photocatalytic degradation of toluene. The modification of a hydrophobic F-doped carbon layer, incorporation of F into TiO2 crystals, and increased Ti3+ content contribute to the improved utilization of photoexcited charge carriers, enhanced toluene adsorption, and resistance towards water vapor.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Shiwen Dong, Xuan Liu, Xianxian Kong, Feilong Dong, Yan Yu, Lizhang Wang, Da Wang, Zhiqiao He, Shuang Song
Summary: Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) have been proven to be efficient catalysts for photocatalytic hydrogen evolution due to their tunable functionalities, permanent porosity, excellent visible light response, and physicochemical stability. In this study, a series of photocatalysts (NUBC) were prepared by loading different amounts of Zr-UiO-66-NH2 onto a benzoic acid-modified covalent triazine-based framework (BC). The resulting NUBC catalysts exhibited a type-II Z-scheme heterojunction structure formed via amide covalent bonds between NU and BC. The optimal loading of NU on BC was 30 wt.% (30NUBC), which showed a significantly higher photocatalytic H-2 evolution rate compared to NU and BC alone. The synergistic effect between the type-II Z-scheme heterojunctions and amide bonds contributed to enhanced visible light harvesting and improved charge transportation and separation. Furthermore, the NUBC catalysts showed excellent reusability and stability. Overall, this work provides insights into the design of novel MOF/COF hybrid materials and offers a systematic exploration of their photocatalytic H2 evolution properties.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Weiting Yu, Lingsha Wen, Jie Gao, Sizhuo Chen, Zhiqiao He, Da Wang, Yi Shen, Shuang Song
Summary: A facile treatment was used to modify commercial irregular shaped polycrystalline Pb into well-defined octahedral Pb with unique Pb(111) facets, leading to efficient, selective, and stable electrochemical reduction of CO2 toward formate. The enhanced catalytic performance on the treated Pb electrode is attributed to the electrode morphology characterized by a unique Pb(111) surface with lower Gibbs free energies for the formation of intermediate OCHO*.
CHEMICAL COMMUNICATIONS
(2021)