Article
Environmental Sciences
Yu Qin, Jun Gu, Wentao Cai, Zhaojia Wang
Summary: This study investigates the catalytic oxidation of chlorobenzene using titania-supported catalysts with different vanadium-tungsten contents. The results suggest that V2O5 is the main active component for chlorobenzene oxidation, and the doping of WO3 affects the valence distributions of vanadium, leading to a bimetallic synergistic effect. In addition, the study proposes a reaction mechanism for the catalytic oxidation of chlorobenzene and shows that the addition of WO3 helps break the C-Cl bond. The catalysts also demonstrate good catalytic activity in the oxidation of PCDD/Fs, with the reaction temperature affecting the degradation efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Takafumi Akamatsu, Toshio Itoh, Akihiro Tsuruta, Yoshitake Masuda
Summary: Resistive-type semiconductor-based gas sensors were fabricated for detecting methyl mercaptan and hydrogen sulfide, with VWT particles deposited on electrodes. The resistance of VWT gas sensor decreased with increasing gas concentrations, showing high responses and good gas selectivity against hydrogen at 300 degrees C for 3 wt.% vanadium oxide-containing sensors.
Article
Chemistry, Physical
Dongrun Xu, Weiye Qu, Junhong Liu, Junxiao Chen, Xue Fang, Liwei Chen, Zhen Ma, Xi Liu, Xingfu Tang, Yaxin Chen
Summary: This study provides evidence that dinuclear vanadium-tungsten sites are the most active catalytic sites in conventional V2O5-WO3/TiO2 SCR catalysts, contrary to the prevailing view. These sites have stronger acidity and higher concentration of vanadium 3d electrons, leading to improved NH3 adsorption and O-2 activation in SCR. This finding settles a long-standing dispute and has important implications for understanding SCR mechanisms and designing better catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Electrochemistry
Aryal Krishna Prasad, Jong-Young Park, Soon-Hyung Kang, Kwang-Soon Ahn
Summary: The study prepared a W-V mixed metal oxide composite thin-film structure comprising WO3 and V2O5, which showed remarkable performance in both electrochromic and electrochemical energy storage applications, such as fast coloration response and high capacitance.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Mai Mersal, Gehad G. Mohamed, Abdallah F. Zedan
Summary: Alcohol oxidation is an important chemical reaction of interest in energy and industrial sectors. In this study, n-TiO2@WO3 heterojunction photocatalysts were prepared and their catalytic activity towards methanol oxidation under visible-light was investigated. The hybrid photocatalyst showed enhanced activity compared to pure counterparts.
Article
Chemistry, Physical
Biborka Boga, Istvan Szekely, Monica Focsan, Monica Baia, Tibor Szabo, Laszlo Nagy, Zsolt Pap
Summary: In this study, vectorial electron transfer between reaction center protein (RC) and WO3(center dot 0.33H2O) was achieved through physical adsorption, with the interaction efficiency being correlated to surface charge, structural/morphological properties, and anchoring capacity of the inorganic carrier. Additionally, the role of WO3(center dot 0.33H2O) as an electron trap and charge separator was demonstrated not only in RCs/WO3(center dot 0.33H2O) biohybrid systems but also in TiO2/WO3(center dot 0.33H2O) composites.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Zhanchao Li, Yun Lei, Wenhui Ma, Yakun Zhang, Shiding Wang
Summary: Ti, W, and V were recovered from waste V2O5-WO3/TiO2 catalyst via silicothermic reduction to prepare W- and V-containing Si-Ti alloys. An optimal reduction slag system and temperature were determined, and the effects of holding time and basicity of the initial slag on the separation of the alloy and reduction of Ti, W, and V oxides were investigated. The study provides a green and efficient method for recycling Ti, W, and V from waste catalysts and for preparing W- and V-containing Si-Ti alloys.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2023)
Article
Chemistry, Physical
Shaohua Chai, Shuangde Li, Weiman Li, Qinzhong Zheng, Dongdong Wang, Yunfa Chen
Summary: The study investigated the catalytic combustion of 100 ppm chlorobenzene over V2O5/TiO2 catalysts with high vanadium loading, and found that VOx species showed 100% conversion of chlorobenzene at 250 degrees C. Various techniques including XRD, SEM, TEM, ICP-OES, N-2 adsorption-desorption, Raman, NH3-TPD, H-2-TPR, and in situ DRIFTS were used to characterize the catalysts and propose a reaction mechanism.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Teng-ge Mi, Yang-wen Wu, Xin-yue Zhou, Wen-tao Li, Li Zhao, Ji Liu, Qiang Lu
Summary: The study investigates the mechanisms of carbon monoxide (CO) oxidation on two SCR catalyst models and finds that the CO oxidation cycle consists of two key stages. The activation energy for CO oxidation on V2O5/TiO2 surface is lower than that on V2O5-WO3/TiO2, indicating that WO3 doping inhibits the CO oxidation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yangyang Guo, Xiaofei Xu, Hong Gao, Yang Zheng, Lei Luo, Tingyu Zhu
Summary: The study compares the performance of V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 catalysts with different calcium content in treating high-calcium content flue gas. The results show that Ce addition can promote NO conversion and enhance the alkali resistance of the catalyst, while lower calcium content is beneficial for improving the catalyst's oxidability. Calcium doping reduces the total acidity and reducibility of the catalyst, while Ce addition strengthens the reducibility of active species.
Article
Chemistry, Physical
I. V. Lukiyanchuk, M. S. Vasilyeva, T. P. Yarovaya, P. M. Nedozorov, V. V. Tkachev, A. Yu Ustinov, Yu. B. Budnikova, Yu. A. Parotkina
Summary: V- and W-containing oxide-phosphate layers were formed on titanium through plasma electrolytic oxidation. The replacement of vanadate with tungstate was studied to understand its effect on voltage-time responses, surface morphology, composition, optical and photocatalytic properties. The incorporation of V and W into the coatings was mainly attributed to thermolysis of vanadungstophosphate hetero-polyoxoanions, while high concentrations of polyphosphate species contributed to the amorphization of coatings and the formation of a titanium phosphate matrix. The formed coatings showed photocatalytic activity in the degradation of methyl orange.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Chuan Gao, Guangpeng Yang, Xu Huang, Qilei Yang, Bing Li, Dong Wang, Yue Peng, Junhua Li, Chunmei Lu, John Crittenden
Summary: The simultaneous elimination of NOx and dioxins in a selective catalytic reduction (SCR) converter has been proven to be effective for multipollutant control in stationary emissions. However, the lack of understanding of the complex interaction mechanism between SCR reactions and catalytic oxidation remains a challenge. This study uses chlorobenzene (CB) as a model molecule to investigate the interaction mechanism and key intermediates over a V2O5-WO3/TiO2 catalyst, revealing that CB enhances the reducibility of V oxides and suppresses the formation of active cis-N2O22-, ultimately improving SCR efficiency.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zijian Song, Yue Peng, Xiaoguang Zhao, Hao Liu, Chuan Gao, Wenzhe Si, Junhua Li
Summary: The effects of Ru on the V2O5-WO3/TiO2 catalyst in NOx and chlorobenzene (CB) simultaneous controls were studied. Ru modification promoted the C-Cl cleavage and decreased polychlorinated species. It enhanced the electron capability and narrowed the band gap of vanadium, weakened the Lewis acid sites, and lowered the energy barriers of C-Cl cleavage.
Article
Chemistry, Physical
Deniz Zengel, Matthias Stehle, Olaf Deutschmann, Maria Casapu, Jan-Dierk Grunwaldt
Summary: The study investigates the impact of hydrocarbons and SO2 on a conventional vanadium-based catalyst under increased pressure, finding that pressure promotes homogeneous reactions of hydrocarbons leading to increased NO oxidation but also parasitic NH3 overconsumption. Short term exposure to 20 ppm SO2 did not lead to significant catalyst poisoning, but longer exposure resulted in increased sulfur-containing deposits at low temperatures under elevated pressures. Notably, the poisonous effect of these deposits was reversible after heating to high temperatures.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Lei Deng, Zhengrong Zhu, Yikun Wang, Shihao Ma, Yan Zhang, Tao Zhang, Zhun Hu, Defu Che
Summary: This study investigates the impact of fluorides on the SCR catalyst activity and deactivation mechanism when electrolytic aluminum waste is co-fired with coal in boilers. The results show that the SCR catalytic activity drops significantly for deactivated catalyst samples by HF.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)