Article
Chemistry, Physical
Zhiwei Wang, Shaohua Xie, Ying Feng, Peijie Ma, Kun Zheng, Erhong Duan, Yuxi Liu, Hongxing Dai, Jiguang Deng
Summary: Fe2O3 supported single atom Pt catalysts were synthesized via a novel impregnation-pyrolysis method, showing good light-thermal conversion efficiency and high toluene oxidation performance under simulated sunlight irradiation. The role of Vis-IR light in the photothermal catalytic oxidation of toluene was highlighted, and a possible reaction pathway was proposed based on experiments.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Qi Yu, Caiting Li, Jungang Zhao, Xuan Liu, Le Huang, Youcai Zhu, Kuang Yang, Ziang Zhang, Dengsheng Ma, Ying Zhang, Qi Huang
Summary: In this study, La1-xFexMnO3 (0 <= x <= 0.2) catalyst was synthesized and its photothermal activity was investigated. The origin of the activity and the intrinsic drivers (Fe doping and photoactivation) of the enhanced activity were revealed through controlled experiments. The mechanisms of the catalytic reactions and the influence of Fe doping and photoactivation on gas resistance and durability were also studied. This study provides new insights into photothermal catalysts with full spectrum response for environmental remediation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Yishui Liu, Mengxi Pei, Huanhuan Liang, Xiaodong Wu, Bo Li, Zhichun Si, Feiyu Kang
Summary: Volatile organic compounds (VOCs) are receiving increased attention due to their impact on air pollution and human health. Researchers have developed a photocatalytic system using few-layer CoAl-LDH as a support for Pt nanoparticles, which are coated on CeO2 nanoparticles. This system forms type II heterojunctions and improves the efficiency of VOC removal. The study provides a useful method for the preparation of high-efficiency photothermal catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Guanghui Li, Meng Zhang, Jin Chen, Qiang Li, Hongpeng Jia
Summary: Pt/Mn-TiO2 photothermal catalysts with abundant oxygen vacancies were prepared by loading Pt onto a composite of MnOx and TiO2 using MIL-125 as precursor and subsequent hydrogen reduction treatment. The optimal 0.65Pt/Mn-TiO2 catalyst achieved high toluene conversion and CO2 yield under light irradiation, and maintained stable activity in the presence of coke and water. The introduction of Pt nanoparticles improved solar spectrum utilization and facilitated the generation of more oxygen vacancies. Photothermal catalysis experiments verified that light enhanced catalytic reaction through photocatalysis and photoactivation of lattice oxygen. Catalytic oxidation under natural sunlight showed promising practical application potential.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hui Gao, Qiang Li, Meng Zhang, Xuelong Lv, Jin Chen, Hongpeng Jia
Summary: The construction of highly efficient metal foam-based monolithic catalysts is crucial for the exploration of photo thermal catalytic oxidation of volatile organic compounds (VOCs) in practical applications. In this study, Pt nanoparticles and NiO nanosheets grown on Ni foam through substitution and acid etching-assisted method were prepared and applied in the photothermal degradation of toluene. The concentration of oxygen vacancies in the monolithic catalyst was tuned by HCl etching, which stimulated the synergistic effect of Pt nanoparticles and NiO nanosheets. The obtained monolithic catalysts exhibited strong light absorption capacity and efficient conversion of light-to-heat ability, leading to good performance in the photothermal degradation of toluene.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Youyou Feng, Jing Qin, Yu Zhou, Qin Yue, Jing Wei
Summary: The combination of mesoporous Fe-N-C SAzyme with photothermal treatment enhances the catalytic performance, resulting in a more effective antibacterial treatment compared to using single antibacterial methods.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Pengcheng Deng, Jianglin Duan, Fenli Liu, Na Yang, Huibin Ge, Jie Gao, Haifeng Qi, Dan Feng, Man Yang, Yong Qin, Yujing Ren
Summary: Understanding the synergistic effect of bimetallic catalysts is crucial in heterogeneous catalysis. However, constructing uniform dual-metal sites is a significant challenge. In this study, a new method for constructing Pt-1-Fe-1/ND dual-single-atom catalyst was developed using nanodiamond (ND) surface decorated with Fe-1-N-4 sites. The catalyst exhibited excellent catalytic performance in nitroarenes selective hydrogenation. The findings advance the application of dual-single-atom catalysts and provide insights into synergistic catalysis at the atomic level.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Anqi Li, Qianpeng Zhang, Shuaiqi Zhao, Yanan Chong, Peng Wu, Yifei Li, Xiaojing Jin, Guangxu Chen, Yongcai Qiu, Shihe Yang, Daiqi Ye
Summary: In this study, a core-shell TiN@TiO2 nanostructure integrated with nanoscaled Pt (Pt/[TiN@TiO2]) was designed and prepared, achieving a highly efficient coupling effect of photocatalysis and light-to-heat conversion for promoting VOCs abatement.
Article
Chemistry, Physical
Yang Wang, Jinyu Dai, Min Wang, Fenggang Qi, Xixiong Jin, Lingxia Zhang
Summary: The degradation of VOCs at low temperature is a major challenge. Photothermal catalysis, combining photocatalysis and thermocatalysis, shows promise in addressing this issue. However, the development of highly active catalysts and a thorough understanding of the photothermal catalysis mechanism are still needed.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ruosi Peng, Haozhi Zhang, Yanjie Guo, Weiqing Huang, You Zhang, Junliang Wu, Mingli Fu, Chenglong Yu, Daiqi Ye
Summary: This study investigates the effect of lanthanide doping on the physicochemical properties and catalytic activity of Pt/CeO2 catalysts for toluene oxidation. The results demonstrate a significant impact of lanthanide doping on the catalyst activity, which is closely related to the ion radius and valence state of the dopants. Doping with Gd enhances the catalytic oxidation of toluene over Pt/CeO2 catalyst, possibly by promoting the formation of Gd-Ce complexes and oxygen vacancies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Linfeng Nie, Shuangde Li, Shaohua Chai, Ning Han, Yunfa Chen
Summary: In this study, a photothermal catalyst CuMn2O4/Mn2O3 with heterojunction was prepared by the sol-gel method, and high-efficiency catalytic oxidation of toluene was achieved through different calcination temperature treatments. Under the irradiation of 700 mW/cm(2) Xe lamp, the CuMn2O4/Mn2O3 catalyst exhibited excellent photo-thermal conversion ability and toluene conversion performance, with good catalytic stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Huihui Shi, Peixin Yang, Lu Huang, Yali Wu, Duohuan Yu, Hangfei Wu, Yunhuai Zhang, Peng Xiao
Summary: A novel single-atom Pt-CeO2/Co3O4 catalyst with ultra-low Pt loading (0.06Pt-SA) was fabricated, showing excellent toluene degradation activity and ultra-long durability. The strong metal-support interaction between single atomic Pt and the carrier contributed to the superior performance of the catalyst by enhancing oxygen activation and toluene removal. This study provides inspiration for the development of low-cost and high-performance VOCs catalyst with noble single-atomic modification strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Weinan Yang, Xiaoguang Zhao, Ya Wang, Rong Wang, Wenhao Yang, Yue Peng, Junhua Li
Summary: Single atom catalysts (SACs) have attracted much attention in heterogeneous catalysis for their high loading and unique catalytic properties. However, the migration and agglomeration of noble metal single atoms pose a challenge for achieving high loading. In this study, we synthesized a manganese oxide supported Pt SAC with a high loading using a selective dissolution strategy. The pre-stabilization of Pt by coordinated oxygen and the abundant surface defects of the support contribute to the high loading.
Article
Chemistry, Physical
Ya Wang, Shu Gui, Gaoli Chen, Sujuan Zhang, Jing Li, Zhongliao Wang, Xiuzhen Zheng, Sugang Meng, Chaohui Ruan, Shifu Chen
Summary: This paper investigates the enhanced effect of photothermal synergistic catalytic reactions, using CeO2 as an example. The experimental results demonstrate that CeO2 efficiently harnesses both light and thermal energy for catalytic reactions, achieving an enhanced effect of photothermal synergistic catalytic reaction. The incorporation of other materials further enhances the photothermal catalytic performance of CeO2.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Min-Ryeong Kim, Suhan Kim
Summary: Efficient Pt-supported zeolite catalysts with tunable mesopore structures are fabricated and shown to exhibit improved performance in VOC oxidation.
Article
Engineering, Chemical
Somaye Sadat Miri, Fereshteh Meshkani, Ali Rastegarpanah, Mehran Rezaei
Summary: The catalytic and structural properties of mesoporous nanocrystalline 10 wt.% Ni-MeOx-MgAl2O4 catalysts were investigated in dry reforming of methane. The addition of Ce significantly improved the catalytic performance, suppressing carbon deposition and enhancing CH4 conversion. The 3 wt.% Ce-promoted catalyst exhibited the best performance in terms of high CH4 conversion and low carbon deposition.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Ning Dong, Qing Ye, Yang Xiao, Dan Zhang, Hongxing Dai
Summary: In this study, the catalytic activity of palladium catalyst was enhanced by introducing reduced graphene oxide into the Birnessite-type MnO2 support. The best-performing catalyst, 0.48Pd-1.0rGO/δ-MnO2, exhibited high catalytic activity due to its high O-ads/O-latt molar ratio, good low-temperature reducibility, and strong interaction between palladium and δ-MnO2.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Linke Wu, Jiguang Deng, Yuxi Liu, Lin Jing, Xiaohui Yu, Xing Zhang, Ruyi Gao, Wenbo Pei, Xiuqing Hao, Ali Rastegarpanah, Hongxing Dai
Summary: In this study, Pd nanoparticles supported on silicalite-1 were prepared using the in situ synthesis method. The resulting catalyst exhibited excellent catalytic activity and thermal stability for the combustion of toluene. The study provides insights into the factors contributing to the catalytic performance of Pd/S-1 catalysts.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Xiuqing Hao, Jiguang Deng, Yuxi Liu, Lin Jing, Jia Wang, Zhiwei Wang, Hongxing Dai
Summary: Manganese-based catalysts, when doped with sodium and combined with platinum and cobalt, exhibit excellent resistance to sulfur dioxide in propane oxidation reactions, while maintaining high catalytic activity. The doping with sodium enhances the catalyst's tolerance to SO2, but inhibits its overall catalytic activity. The Pt1Co1/meso-NaxMnOy catalyst, which consists of well-dispersed Pt and Co atoms on the mesoporous sodium-doped manganese oxide, shows the highest catalytic activity among all the studied samples.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Kunfeng Zhang, Hongxia Chen, Yuxi Liu, Jiguang Deng, Lin Jing, Ali Rastegarpanah, Wenbo Pei, Zhuo Han, Hongxing Dai
Summary: Two-dimensional Bi2WO6, Bi2MoO6, and Bi2WxMo1_xO6 (x = 0.1, 0.3, 0.5, 0.7, and 0.9) solid solution photocatalysts were synthesized, with Bi2W0.3Mo0.7O6 showing the highest photocatalytic activity and selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Energy & Fuels
Yuan Feng, Yuxi Liu, Hongxing Dai, Jiguang Deng
Summary: CO, CH4, and VOCs are typical air pollutants that have received significant attention due to their negative impact on the environment and human health. Although heterogeneous catalysts are widely used in removing exhaust emissions, they often suffer from deactivation. Therefore, developing catalysts with high stability is crucial. This review summarizes recent advances in enhancing the catalytic stability of catalysts and proposes future perspectives for developing stable and highly efficient catalysts in the fields of pollutant removal and VOC resource utilization via selective catalytic oxidation.
Article
Chemistry, Multidisciplinary
Meng Guo, Peijie Ma, Lu Wei, Jiayi Wang, Zhiwei Wang, Kun Zheng, Daojian Cheng, Yuxi Liu, Hongxing Dai, Guangsheng Guo, Erhong Duan, Jiguang Deng
Summary: In this study, a universal strategy was demonstrated to inhibit the deep oxidation of isopropanol and achieve ultrahigh selectivity to acetone by partially covering the surface oxidative Pd sites with transition metal oxides through thermal treatment of alloys. The introduction of proper CuO shifted the d-band center of Pd upward and strengthened the adsorption and activation of reactants, resulting in more reactive oxygen species for selective oxidation and significantly reducing the barrier of bond scission.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Linlin Li, Yuxi Liu, Jiguang Deng, Lin Jing, Zhiquan Hou, Ruyi Gao, Hongxing Dai
Summary: Pt/CeMnOx/diatomite exhibits high catalytic activity for the oxidation of volatile organic compounds, especially ethyl acetate, at low temperatures. It also shows good resistance to sulfur dioxide. The oxidation pathways of ethyl acetate and toluene over Pt/CeMnOx/diatomite involve the breaking of C-C and C-O bonds followed by conversion to CO2 and H2O. This research provides a strategy for developing efficient catalysts with high catalytic activity and durability under actual working conditions.
Article
Chemistry, Physical
Minming Bao, Yuxi Liu, Jiguang Deng, Lin Jing, Zhiquan Hou, Zhiwei Wang, Lu Wei, Xiaohui Yu, Hongxing Dai
Summary: In this study, AuPdx nanoparticles were loaded on TiO2 to form yAuPd(x)/TiO2 catalysts. The 0.37AuPd(2.72)/TiO2 sample showed the best catalytic activity, attributed to the good dispersion of AuPd2.72 nanoparticles, strong redox ability, large ethyl acetate adsorption capacity, and strong interaction with TiO2. The loading of AuPdx nanoparticles effectively reduced the formation of the toxic by-product acetaldehyde.
Article
Chemistry, Physical
Wenbo Pei, Kuan Yang, Jiguang Deng, Yuxi Liu, Zhiquan Hou, Jia Wang, Yuan Feng, Xiaohui Yu, Hongxing Dai
Summary: In this study, a three-dimensionally ordered mesoporous Fe2O3-supported bimetallic AuPt single-atom catalyst (denoted as Au1Pt1/meso-Fe2O3) was synthesized via a modified polyvinyl alcohol-protected reduction route. The catalytic performance of this catalyst for methanol oxidation and its resistance to SO2 were investigated. The results showed that the Au1Pt1/meso-Fe2O3 catalyst exhibited better catalytic activity and superior SO2 resistance compared to other catalysts, making it a promising candidate for VOCs elimination in the presence of SO2.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Editorial Material
Chemistry, Physical
Hongxing Dai, Xiang Wang, Yujun Zhu, Haibao Huang, Yunkun Zhao
Review
Chemistry, Physical
Jinxiong Tao, Yuxi Liu, Jiguang Deng, Lin Jing, Zhiquan Hou, Lu Wei, Zhiwei Wang, Hongxing Dai
Summary: The emission of methane contributes to the greenhouse effect and environmental problems. Conventional palladium catalysts are unstable under harsh conditions, but zeolite-supported noble metal catalysts show promise. This review summarizes the development and characteristics of these catalysts for methane combustion and highlights the importance of high-performance catalysts under realistic conditions.
Article
Chemistry, Physical
Zeya Li, Ruyi Gao, Zhiquan Hou, Xiaohui Yu, Hongxing Dai, Jiguang Deng, Yuxi Liu
Summary: This study introduces a novel PtSn/CeO2 and Mn/ZSM-5 catalyst for efficient oxidation of multicomponent volatile organic compounds (VOCs). The catalyst exhibits good chlorine resistance and catalytic performance, simultaneously oxidizing toluene and trichloroethylene with fewer toxic byproducts. These findings provide new insights into the design and synthesis of advanced catalysts for widespread VOCs pollution control.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
