Correction
Chemistry, Physical
Jun Cao, Sohrab Rohani, Weizao Liu, Honghui Liu, Zhuquan Lu, Hongli Wu, Lijun Jiang, Ming Kong, Qingcai Liu, Xiaojiang Yao
Summary: The publisher apologizes for the error in the corresponding authors' address and has made the necessary updates.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Wei Tan, Jin Wang, Yandi Cai, Lulu Li, Shaohua Xie, Fei Gao, Fudong Liu, Lin Dong
Summary: This study proposes a new strategy of Mo doping to improve the low-temperature SCR activity of CeSi2. A Mo-Ce-Si mixed-oxide catalyst was prepared by a simple co-precipitation method. Mo doping significantly enhances the NH3-SCR activity of CeSi2 and exhibits superior N2 selectivity and resistance to SO2/H2O poisoning.
Article
Chemistry, Physical
Leila Negahdar, Naomi E. Omori, Matthew G. Quesne, Mark D. Frogley, Fernando Cacho-Nerin, Wilm Jones, Stephen W. T. Price, C. Richard A. Catlow, Andrew M. Beale
Summary: This study investigates the formation of N2O during NH3-SCR over Cu-SSZ-13 catalysts and establishes a link between the copper environment and N2O production. By comparing two different Cu-SSZ-13 samples, the study reveals an important correlation between the catalytic behavior of Cu-zeolites and the nature of their metal ion loading and speciation.
Article
Engineering, Chemical
Hanghang Li, Wei Zhao, Licheng Wu, Qian Wang, Danhong Shang, Qin Zhong
Summary: A series of B-doped V2O5/TiO2 catalysts were prepared to investigate the influence of B-doping on the selective catalytic reduction (SCR) of NOx with NH3. The experimental results demonstrated that the introduction of B not only improved the low-temperature SCR activity of the catalysts, but also broadened the activity temperature window.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Yiqing Zeng, Yanan Wang, Plaifa Hongmanorom, Zhigang Wang, Shule Zhang, Jiatang Chen, Qin Zhong, Sibudjing Kawi
Summary: In this study, a highly efficient P-doped CeO2/TiO2 catalyst was constructed, showing higher catalytic activity and stability compared to traditional catalysts. By controlling the P/Ti ratio and CeO2 loading content, a balance between surface acid sites and redox sites can be achieved to obtain the best catalytic performance. This work provides a feasible method for designing CeO2/TiO2-based catalysts with optimized surface properties for enhanced catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Ye Jiang, Da Han, Lin Yang, Zhengda Yang, Hongwei Ge, Riyi Lin, Xinwei Wang
Summary: The role of Nb doping in improving the anti-K poisoning ability of CeO2-TiO2 catalyst was investigated in this study. It was found that the Nb-modified catalyst exhibited significantly enhanced catalytic activity in the presence of K. The doping of Nb improved the BET surface area and reduced the surface crystallinity of the catalyst. In addition, the Nb-modified catalyst showed a smaller decrease in the ratio of Ce3+/Ce4+, surface chemisorbed oxygen, Bronsted acidity, and redox property in the presence of K. The results of in situ DRIFTs indicated that the reactions on both fresh and K-poisoned catalysts were controlled by combined E-R and L-H mechanisms. The addition of Nb enhanced the adsorption of NO and NH3, contributing to the improved K-poisoning resistance of CeO2-TiO2.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Inorganic & Nuclear
Xudong Liu, Fengyuan Liu, Junqi Li, Yuanpei Lan, Jian Yang, Arun Murali, Chaoyi Chen, Wei Zhang
Summary: The phase effects of MnOx in Mn-Ce catalysts on low temperature NOx removal performance with NH3 were evaluated. MnO2@CeO2 showed the highest NO conversion ratio, reaching nearly 96.5% at 150℃. Characterization results revealed that MnO2@CeO2 had the largest specific surface area, stronger redox ability, and more surface acid sites. Thus, MnO2@CeO2 is the most effective catalyst for low temperature NOx removal.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Ziyi Chen, Xiaomin Wu, Boyin Yang, Zhiwei Huang, Huazhen Shen, Guohua Jing
Summary: Submonolayer-supported catalysts based on 3DOM CeO(2) loaded with VOx-MnOx exhibit excellent activity for NH3-SCR, with the 5 wt% 3DOM VOx-MnOx/CeO2 catalyst showing the best catalytic performance achieving over 95% NO conversion at 250 degrees C.
Review
Chemistry, Physical
Dongdong Ren, Keting Gui, Shaochen Gu, Yuliang Wei
Summary: The doping of Mn on the gamma-Fe2O3 catalyst surface can enhance the NO removal catalytic activity by improving surface acidity and activity, promoting the adsorption of NH3 and NO, and facilitating the de-NOx reaction pathway.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yusuke Inomata, Hiroe Kubota, Yoshinori Honmatsu, Hiroaki Takamitsu, Sosuke Sakotami, Kazuhiro Yoshida, Takashi Toyao, Ken-ichi Shimizu, Toru Murayama
Summary: NH3-SCR is a key technique for reducing harmful NOx emissions. The study shows that Na-intercalated vanadium oxide can accelerate the reaction and improve the efficiency of NH3-SCR.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Applied
Tao Chen, Shan Ren, Lin Chen, Zhichao Chen, Xiaodi Li, Mingming Wang, Jie Yang
Summary: The increase of solid wastes poses a great threat to the environment and human health, making the resource utilization of solid wastes inevitable in industrial development. Certain types of solid wastes, such as blast furnace slag, red mud, coal fly ash, and Fenton sludge, have been extensively studied as potential materials for NH3-SCR catalysts. These catalyst supports derived from solid wastes provide large specific surface areas, enhancing NH3 adsorption and improving the denitrification efficiency.
Article
Energy & Fuels
Jinxiu Wang, Yuqiu Liu, Xianfang Yi, Yanting Chen, Yanke Yu, Jinsheng Chen
Summary: Researchers have developed a novel NH3-SCR catalyst to control NOx emissions from fossil fuel combustion. By doping CeO2 catalysts with Fe and conducting sulfation treatment on porous nanorods, the catalysts showed improved conversion of NOx. The introduction of Fe and sulfation treatment resulted in changes in morphology, surface area, and acidity of the catalysts, contributing to enhanced catalytic activity.
Article
Chemistry, Physical
Jun Li, Fei Zhou, Zhibo Xiong, Yanping Du, Qiguo Yang, Wei Wang, Wei Lu
Summary: Zirconium (Zr) was doped to optimize the NH3-SCR activity of CeO2 and thiourea modified CeO2-TA catalysts. Zr doping reduces agglomeration, changes catalyst morphology and promotes the formation of Ce-Zr solid solution. It also exhibits a synergistic promotional effect with thiourea modification on the dispersion of Ce3+ and S6+ species on the surface, increasing the concentrations of surface oxygen. Interestingly, Zr doping decreases the promotional effect on catalyst reducibility but increases the acidity of CeO2-TA through the formation of sulfate species.
Article
Chemistry, Physical
Yuqiu Liu, Biyi Huang, Jianyi Zhang, Yanting Chen, Jinsheng Chen, Jinxiu Wang
Summary: A series of FeVO4/CeO2 nanosheet catalysts were synthesized with different mass percentages (x%) of FeVO4, and employed in the selective catalytic reduction (SCR) of NOx with NH3. The 10%FeV/CeO2-S catalyst exhibited the best NH3-SCR activity, achieving over 90% NOx conversion and over 98% N-2 selectivity at 216-365℃. The combination of FeVO4 with CeO2 nanosheets improved the NH3-SCR activity at low and medium temperatures and broadened the operating temperature window.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Wangxiang Pan, Jingping He, Guanlin Huang, Wentao Zhang, De Fang
Summary: This paper reviews the preparation methods, properties, and influencing factors of ZSM-5 catalysts in NH3-SCR, discusses the SCR performance of ZSM-5 catalysts doped with different metal ions, and summarizes the environmental adaptability of ZSM-5 catalysts and their development in denitrification.
Article
Engineering, Environmental
Yuqin Lu, Hua Deng, Tingting Pan, Xu Liao, Changbin Zhang, Hong He
Summary: A simple strategy was provided to regulate the morphology and microstructure of (5-MnO2 via the hydrothermal reaction temperature, which improved the reactivity and lifetime of catalysts in the catalytic ozonation of toluene. The optimized MnO2-260 catalyst showed high catalytic activity and excellent stability at the approximately ambient temperature of 40 degrees C. Surface oxygen vacancy clusters, especially surface oxygen dimer vacancies, were found to be critical in ozone activation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Tingting Pan, Hua Deng, Yuqin Lu, Jinzhu Ma, Lian Wang, Changbin Zhang, Hong He
Summary: This study investigates the catalytic oxidation and mixing effects of representative VOCs in industrial exhausts on common Mn-based catalysts. The results show a significant mutual promotion effect on the conversion of VOCs when combusted together, especially on toluene destruction.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Qingxin Ma, Yaqi Zhao, Peng Zhang, Chang Liu, Tao Lin, Ling Wang, Biwu Chu, Hong He
Summary: This study comprehensively investigated the heterogeneous reactions of NH3 on TiO2 using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and a flow tube reactor. The results showed that surface hydroxyls and H2O play important roles in the adsorption of NH3, while adsorbed sulfur species can promote the conversion of NH3. The reaction mechanism under light conditions is quite different from that under dark conditions.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Nanoscience & Nanotechnology
Hua Deng, Changbin Zhang, Yuqin Lu, Tingting Pan, Hong He
Summary: A series of alpha-MnO2 nanowire catalysts were prepared by thermal annealing treatment at different temperatures to manipulate defect species. The study found that the optimal high calcination temperature produced more unsaturated manganese and oxygen vacancies, especially surface oxygen vacancy clusters, in alpha-MnO2. The MnO2-600 exhibited the best-ever performance in toluene conversion (95%) and mineralization rate (89.5%) at 20 degrees C, making it a promising candidate for practical use.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Meteorology & Atmospheric Sciences
Tong Zhu, Mingjin Tang, Meng Gao, Xinhui Bi, Junji Cao, Huizheng Che, Jianmin Chen, Aijun Ding, Pingqing Fu, Jian Gao, Yang Gao, Maofa Ge, Xinlei Ge, Zhiwei Han, Hong He, Ru-Jin Huang, Xin Huang, Hong Liao, Cheng Liu, Huan Liu, Jianguo Liu, Shaw Chen Liu, Keding Lu, Qingxin Ma, Wei Nie, Min Shao, Yu Song, Yele Sun, Xiao Tang, Tao Wang, Tijian Wang, Weigang Wang, Xuemei Wang, Zifa Wang, Yan Yin, Qiang Zhang, Weijun Zhang, Yanlin Zhang, Yunhong Zhang, Yu Zhao, Mei Zheng, Bin Zhu, Jiang Zhu
Summary: In the past 25 years, atmospheric chemistry research in China has grown rapidly, focusing on the concept of air pollution complexity. Over 24,000 papers on air pollution, authored or co-authored by Chinese scientists, were published in 2021. This paper reviews representative studies on various aspects of atmospheric chemistry in China, providing a starting point for understanding the field. The advances discussed in this paper have established a theoretical framework for air pollution, supported effective air pollution control policies in China, and created opportunities for education and career development.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Biwu Chu, Yuan Liu, Hao Li, Yongcheng Jia, Jun Liu, Qing Cao, Tianzeng Chen, Peng Zhang, Qingxin Ma, Xiao Cheng Zeng, Joseph S. Francisco, Hong He
Summary: Using a flow tube reactor, it was discovered that N2O5 can be released from the TiO2 surface during the photocatalytic oxidation of NO2, which provides a previously unreported source of N2O5. The release rate of N2O5 from TiO2 depends on various factors including the initial NO2 concentration, relative humidity, O-2/N-2 ratio, and irradiation intensity. Experimental and theoretical studies show that this release is due to the reaction of NO2 with surface hydroxyl groups and electron holes on TiO2, followed by its combination with another NO2 molecule to form N2O5.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Tianzeng Chen, Peng Zhang, Biwu Chu, Qingxin Ma, Yanli Ge, Hong He
Summary: This study investigated the synergistic effects of SO2 and NH3 on secondary organic aerosol (SOA) formation from vehicle evaporative volatile organic compounds (VOCs). The coexistence of SO2 and NH3 had a greater promotion effect on SOA formation, larger than the cumulative effect of the two promotions alone. Furthermore, SO2 increased the oxidation state (OSc) of SOA in the presence of NH3. This study provides insights into the formation of SOA from vehicle evaporative VOCs under complex pollution conditions and its atmospheric implications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Meng Zhang, Guanghui Li, Qiang Li, Jing Chen, Ehiaghe Agbovhimen Elimian, Hongpeng Jia, Hong He
Summary: The alternative use of renewable energy to power the catalytic oxidation of pollutants requires a competent catalyst for efficient utilization of light and driving the reaction. In this study, in situ-synthesized manganese oxide heterostructure composites were developed through solvothermal reduction and subsequent calcination of amorphous manganese oxide (AMO). The AMO-250 catalyst achieved 95% toluene conversion and 80% CO2 mineralization under light irradiation, with stable performance for at least 40 hours. Factors contributing to the good catalytic oxidation activity of AMO-250 include high light utilization, uniformly dispersed nanoparticles, large specific surface area, improved metal reducibility, and oxygen desorption and migration ability at low temperature.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhongqi Liu, Yulong Shan, Shichao Han, Yu Fu, Jinpeng Du, Yu Sun, Xiaoyan Shi, Yunbo Yu, Hong He
Summary: The complex poisoning of Cu-KFI catalysts by SO2 and hydrothermal aging was investigated. SO2 poisoning restrained the low-temperature activity of Cu-KFI by the formation of H2SO4 and CuSO4. Hydrothermally aged Cu-KFI exhibited better SO2 resistance due to the reduction of Brunsted acid sites. SO2 poisoning promoted the high-temperature activity of hydrothermally aged Cu-KFI by triggering the formation of CuSO4.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Azina Rahmani, Maksim A. Sultanov, Kemah Kamiru-White, Lorianne R. Shultz-Johnson, Brian E. Butkus, Shaohua Xie, Fudong Liu, Diep T. H. Nguyen, Noeimie Wilson-Faubert, Ali Nazemi, Parag Banerjee, Lei Zhai, Massimiliano Delferro, Jianguo Wen, Titel Jurca
Summary: Galvanic exchange and atomic layer deposition techniques were used to prepare ultralow loading Pt catalysts with high stability and recyclability. The catalysts showed high activity towards various functionalized styrenes and excellent tolerance towards substituents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Shasha Huang, Yulong Shan, Xiaoyan Shi, Zhongqi Liu, Qiang Wang, Hong He
Summary: This study investigates two passive NOx adsorber (PNA) material candidates: the novel support CeSnOx and CeSnOx/Pd loaded material. It is found that CeSnO(x) exhibits a large NOx uptake and storage capacity (28.9 μmol/g), while Pd loading on CeSnOx further increases the storage capacity to 37.6 μmol/g. After a hydrothermal aging treatment, the NOx adsorption and storage capacities of CeSnOx and Pd/CeSnOx increase, indicating excellent hydrothermal stability.
Article
Chemistry, Multidisciplinary
Peng Yang, Juntian Xu, Wei Tan, Qinglong Liu, Yandi Cai, Shaohua Xie, Song Hong, Fei Gao, Fudong Liu, Lin Dong
Summary: The catalytic oxidation performance of the Pt-1/CeO2 catalyst was greatly improved with the introduction of potassium species. Potassium ions acted as structural and electronic promoters, forming Pt-O-K interactions with Pt to directly regulate the coordination environment and electronic state of Pt, as well as the metal-support interaction between Pt and CeO2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Zhihua Liu, Wen J. Wang, Ashley Ballantyne, Hong S. He, Xugao Wang, Shuguang Liu, Philippe Ciais, Michael C. Wimberly, Shilong Piao, Kailiang Yu, Qichao Yao, Yu Liang, Zhiwei Wu, Yunting Fang, Anping Chen, Wenru Xu, Jiaojun Zhu
Summary: According to satellite data, the rate, frequency, and extent of forest disturbances in China decreased from 1986 to 2020, possibly due to forest protection policies. However, while these disturbances intensified in the southeast, they weakened in the northeast.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Correction
Environmental Sciences
Jiuhui Li, Zhengfang Wu, Hongshi He, Wenxi Lu
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Yanwei Sun, Guangyan Xu, Yingjie Wang, Wei Shi, Yunbo Yu, Hong He
Summary: In this study, a series of encapsulated structured catalysts with palladium nanoparticles confined in hydrophobic silicalite-2 were prepared, which showed high catalytic activity and long-term stability for methane oxidation under harsh conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
