Article
Environmental Sciences
Minzhang Li, Qikun Hu, Haiquan Shan, Wenjian Yu, Zong-Xiang Xu
Summary: The combination of CuPc and N-CuMe2Pc with rGO to form CuPc/rGO and N-CuMe2Pc/rGO nanocomposites significantly improves the removal efficiency of Cr(VI), with N-CuMe2Pc/rGO exhibiting higher specific surface area, higher light harvesting, higher conductivity, and more negative lowest unoccupied molecular orbital level.
Article
Chemistry, Multidisciplinary
Ya-Qi Zhang, Lin Hou, Hao-Xue Bi, Xiao-Xue Fang, Yuan-Yuan Ma, Zhan-Gang Han
Summary: Visible-light-driven photocatalytic reduction of Cr(VI) using three hourglass-type phosphomolybdate-based hybrids has been studied, showing superior activity compared to inorganic {Zn[P4Mo6](2)} clusters alone. The organic components in the hybrids play a significant role in affecting visible-light absorption and recombination of photogenerated carriers, ultimately enhancing the photocatalytic performances towards Cr(VI) reduction.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Ainara Valverde, David Payno, Luis Lezama, Jose M. Laza, Stefan Wuttke, Roberto Fernandez de Luis
Summary: This study explores the opportunities and effects of multivariate functionalization of UiO-66 for photocatalytic water remediation. By developing a multivariate material, a dual sorbent/photocatalyst with excellent properties is successfully created. This work represents a milestone for the development of an emerging class of reticular materials.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Review
Chemistry, Multidisciplinary
Andreina Garcia, Barbara Rodriguez, Maibelin Rosales, Yurieth M. Quintero, Paula G. Saiz, Ander Reizabal, Stefan Wuttke, Leire Celaya-Azcoaga, Ainara Valverde, Roberto Fernandez de Luis
Summary: This minireview discusses the application of Metal-Organic frameworks (MOFs) for the detoxification of hexavalent chromium (Cr(VI)) and compares it to the recent advances and strategies of MOFs for photocatalysis purposes.
Article
Polymer Science
Aijun Deng, Shaojie Wu, Junjie Hao, Hongbo Pan, Mingyang Li, Xiangpeng Gao
Summary: Heavy metal pollution, especially chromium contamination, is a significant problem in water treatment. Traditional methods for treating chromium-containing wastewater have limitations in terms of complexity and secondary pollution. Therefore, finding efficient and fast processing methods is crucial. In this study, a novel composite gel (T-BSA) was synthesized by modifying sodium alginate with thiourea and mixed with biochar. The T-BSA gel showed promising results in removing 99.98% of Cr(VI) from aqueous solutions through synergistic adsorption and photocatalytic reduction under UV light irradiation. The study also analyzed the mechanism behind the removal process and demonstrated that polysaccharide-derived materials can serve as efficient photocatalysts for wastewater treatment.
Article
Chemistry, Physical
Shaojie Wu, Mingyang Li, Lili Xin, Hongming Long, Xiangpeng Gao
Summary: A polysaccharide-derived composite was prepared by embedding carbonized chitosan into triethylenetetramine modified sodium alginate for the removal of hexavalent chromium. The composite exhibited high adsorption capacity and photocatalytic activity, effectively removing hexavalent chromium under UV light irradiation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Jiyong Zhang, Wentao Zhang, Fei Yuan, Zhenrui Yang, Jinhui Lin, Yi Huang, Minggang Ding
Summary: The Bi-doped ZnAl layered double hydroxides composites showed high removal efficiency for Cr(VI) through adsorption and photocatalytic reduction, with the potential to effectively convert harmful Cr(VI) to safe Cr(III) in water systems. The optimal removal ability was achieved with 3% Bi doping and a Bi5O7I/ZnAlBi-CLDHs ratio of 1/10, demonstrating a promising approach for water security.
APPLIED SURFACE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Rachita Lakra, Manikantan Syamala Kiran, Purna Sai Korrapati
Summary: The study focused on the green synthesis of silver nanoparticles with furfural for the photocatalytic reduction of hexavalent chromium. The efficiency of FAgNPs in reducing Cr(VI) was investigated with varying initial concentration, pH, catalyst dosage, and time. It was observed that FAgNPs showed a reduction efficiency of 9% to 88% at pH 2 under UV illumination.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Review
Environmental Sciences
Chong-Chen Wang, Xueying Ren, Peng Wang, Cheng Chang
Summary: This state of the art review discusses the use of metal-organic frameworks (MOFs) and their composites for photocatalytic reduction of toxic Cr(VI) to less toxic Cr(III). The construction of composites improves the efficiency of Cr(VI) reduction through enhanced charge transfer, and the corresponding mechanisms are clarified through experimental tests and calculations. The immobilization of MOFs onto substrates allows for continuous operations under real solar light. The review also analyzes the environmental applications of Cr(VI) reduction and identifies influencing factors. Overall, this review highlights the significant breakthrough achieved in the field of photocatalytic Cr(VI) reduction using MOFs.
Article
Environmental Sciences
Zhexin Zhu, Yongquan Miao, Gangqiang Wang, Wenxing Chen, Wangyang Lu
Summary: By mixing zinc-doped graphite carbon nitride photocatalyst with polyacrylonitrile to produce photocatalyst fibers, the difficult recovery of common powder catalysts and fast electron-hole recombination were successfully addressed, achieving simultaneous efficient reduction of hexavalent chromium and degradation of pharmaceuticals, with the potential for environmental applications.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Wenbo Zhao, Minghua He, Fengjuan Chen, Xuekun Jin, Haiming Duan, Mengqiu Long, Zhaofeng Wu, Biaobing Cao, Yang Yu
Summary: The combination of SnS2 coupling was used to modify SnO2 nanoparticles, constructing a SnS2/SnO2 heterostructure. The composites exhibited enhanced photocatalytic activity and an extended light absorption range to the visible region, leading to efficient removal of environmental pollutants. Superior photocatalytic performance was attributed to the effective separation of photoinduced carriers and enhanced light absorption.
Article
Chemistry, Physical
Xiaodie He, Tiwei He, Yan Liu, Yunjie Zhou, Bin Song, Yufan Qi, Lin Jiang, Fan Liao, Zhenhui Kang
Summary: In this study, the photocatalytic activity of narrow bandgap materials was enhanced by modifying SnS2 nanosheet with polyaniline (PANI/SnS2), resulting in increased utilization of sunlight. PANI/SnS2 exhibited higher absorption and adsorption rates compared to SnS2, accompanied by efficient electron-hole separation and rapid electron transfer. Moreover, PANI/SnS2 showed excellent degradation efficiency and hexavalent chromium reduction rate under near-infrared light irradiation.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Inorganic & Nuclear
Chizoba Ezugwu, Shengwei Liu, Chuanhao Li, Serge Zhuiykov, Soumyajit Roy, Francis Verpoort
Summary: Artificial photosynthesis is a promising technique for CO2 mitigation and solar energy conversion. Metal-organic frameworks (MOFs) are efficient photocatalysts with high surface area and flexible design capabilities for complex multicomponent systems. The review examines strategies for designing MOFs to convert CO2 into solar fuels efficiently, highlighting features as semiconductor photocatalysts and means to improve light-harvesting and CO2 adsorption.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Fang Xu, Wanning Cao, Jinzhou Li, Songsong Zhi, Zhiyong Gao, Yuqin Jiang, Wei Li, Kai Jiang, Dapeng Wu
Summary: TiO2@NH2-MIL-125(Ti) nanocomposites with unsaturated titanium-oxo clusters, mesoporous structure, and intimate interface were successfully constructed via an in-situ distilled water-etched route. The measurements showed improved charge separation efficiency and decreased transfer resistance within the heterojunction interfaces for TiO2@NH2-MIL-125(Ti) nanocomposites, facilitating the photoexcited electrons transfer and reduction of Cr(VI) species. The optimal TiO2@NH2-MIL-125(Ti) nanocomposite exhibited superior performance compared to NH2-MIL-125(Ti) and TiO2 derived from NH2-MIL-125(Ti). Based on free radical trapping experiment and electron paramagnetic resonance (EPR) measurements, a possible type-II scheme was proposed to explain the enhanced photocatalytic activity.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Engineering, Chemical
Zhouzheng Jin, Jingru Li, Dan Liu, Yanmin Sun, Xiaoyun Li, Qi Cai, Hui Ding, Jianzhou Gui
Summary: A new type of hierarchical dual S-scheme heterojunction, W@ZIS/Bi2S3, was designed for the efficient photocatalytic elimination of Cr (VI) by facilitating charge migration and spatial separation. The optimized composite exhibited excellent adsorption and photocatalytic capacity, achieving a high reduction efficiency of Cr (VI). The study provides new insights into the working mechanism of ternary heterojunctions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Belisa A. Marinho, Luka Suhadolnik, Blaz Likozar, Matej Hus, Ziva Marinko, Miran Ceh
Summary: This article provides a comprehensive review of photo-and electrocatalytic techniques for the removal of pharmaceuticals from water and wastewaters. It discusses the analytical and toxicity methods commonly used in studying pharmaceutical degradation. The principles and practical applications of photocatalysis, electrocatalysis, and photoelectrocatalysis are presented, along with examples. The limitations and advantages of these techniques are discussed, as well as alternatives to overcome these limitations.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Energy & Fuels
Tamires Cristina Costa, Letiane Thomas Hendges, Bruna Temochko, Luciana Prazeres Mazur, Belisa Alcantara Marinho, Silvio Edegar Weschenfelder, Priscilla Lopes Florido, Adriano Da Silva, Antonio Augusto Ulson de Souza, Selene M. A. Guelli Ulson De Souza
Summary: Produced water, a major wastewater stream in the oil and gas industry, contains high levels of water soluble organic compounds that are challenging to remove. Effective management and treatment methods are necessary to comply with environmental regulations and ensure safe reuse or disposal.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Environmental Sciences
Isabella T. Tomasi, Claudia A. Machado, Rui A. R. Boaventura, Cidalia M. S. Botelho, Silvia C. R. Santos
Summary: This review paper highlights the advantages of using tannin-based natural coagulants in different types of water, wastewater, and effluent treatment. Tannin-based coagulants can successfully remove various pollutants and microorganisms, are compatible with other treatment technologies, and can reduce operating costs of water treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Engineering, Environmental
Mileena Moreno, Luciana P. Mazur, Silvio Edegar Weschenfelder, Renata J. Regis, Rodrigo A. F. de Souza, Belisa A. Marinho, Adriano da Silva, Selene M. A. Guelli U. de Souza, Antonio Augusto U. de Souza
Summary: Micellar-enhanced ultrafiltration is a surfactant-based method to remove low concentrations of contaminants from water and wastewater streams, increasing the permeate flux. The parameters influencing MEUF include surfactant types, membranes, pressure, etc. However, the reviewed data indicates gaps in MEUF studies, such as the lack of information regarding important parameters and imprecise measurements of CMC. The challenge for future industrial-scale applications is to study MEUF on a pilot scale using industrial wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Aline M. Novack, Tamires C. Costa, Fabiola Hackbarth, Belisa A. Marinho, Jose A. B. Valle, Antonio Augusto U. Souza, Vitor J. P. Vilar, Selene M. A. Guelli U. Souza
Summary: The catalytic potential of steel mill scale in wastewater treatment was evaluated in this study. The results showed that steel mill scale can effectively reduce hexavalent chromium and achieve significant chromium removal in wastewater treatment under certain conditions.
Article
Biotechnology & Applied Microbiology
Karyn N. O. Silva, Joao M. M. Henrique, Maja B. Dolic, Carlos A. Martinez-Huitle, Elisama Dos Santos, Francisca C. Moreira, Vitor J. P. Vilar
Summary: The study successfully integrated soil washing and cork PRBs to remove PAHs from soil, demonstrating the feasibility of this approach.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Agricultural Engineering
Sara Pardilho, Jose C. Pires, Rui Boaventura, Manuel Almeida, Joana Maia Dias
Summary: This study compares the performance of five different kinetic models in describing methane production during the digestion of marine macroalgae waste, and finds that the multi-Gompertz model can predict methane yield more accurately.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Sara Pardilho, Rui Boaventura, Manuel Almeida, Joana Maia Dias
Summary: Co-digestion of marine macroalgae waste and fruit waste enhances methane production, but the choice of substrate ratio needs to be considered.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Isabella T. T. Tomasi, Silvia C. R. Santos, Rui A. R. Boaventura, Cidalia M. S. Botelho
Summary: Tannins extracted from Eucalyptus globulus bark showed good potential for synthesizing natural coagulants. Microwave-assisted extraction exhibited superior performance and the optimized conditions resulted in high extraction yield and phenolic content. The study highlights the importance of using natural sources for sustainable water treatment solutions.
Article
Chemistry, Multidisciplinary
Ana F. F. Esteves, Sara M. M. Soares, Eva M. M. Salgado, Rui A. R. Boaventura, Jose C. M. Pires
Summary: With the increasing scarcity of natural resources, there is a growing need to control consumption and recycle usage. Microalgae have been identified as a potential solution for wastewater treatment due to their ability to treat wastewater and produce valuable biomass. This study successfully applied Chlorella vulgaris to treat aquaculture wastewater, achieving high removal efficiencies for various pollutants and producing biomass with valuable components.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Mariko A. Carneiro, Joana F. R. Coelho, Ariana M. A. Pintor, Rui A. R. Boaventura, Cidalia M. S. Botello
Summary: The study focused on the chemical desorption of arsenic from saturated iron-coated cork granulates and the regeneration capacity of this adsorbent, showing that NaOH solution achieved the highest arsenic removal rate but was aggressive to the adsorbent structure. A less basic NaOH solution proved to be less aggressive and allowed for multiple adsorption-desorption cycles with consistent arsenic removal capacity.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Isabella T. Tomasi, Silvia C. R. Santos, Rui A. R. Boaventura, Cidalia M. S. Botelho
Summary: Portugal is a major producer of chestnuts and the discarded nut shells have potential uses. The shells contain polyphenols, which can be extracted and used for various applications, including water treatment coagulants. In this study, tannin extraction from chestnut shells was optimized using a microwave-assisted method. The best extraction conditions were determined as a 5-minute extraction time, a liquid-to-solid ratio of 50 mL/g, and a temperature of 107 degrees C. The extracted polyphenols showed good features for use as raw materials in water treatment coagulants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Carla Santos, Miguel Herraiz-Carbone, Engracia Lacasa, Cristina Saez, Rosa Montes, Jose Benito Quintana, Rosario Rodil, Ana I. Gomes, Vitor J. P. Vilar
Summary: This research explores the use of a tubular membrane photoreactor for continuous titration of Fe2+ to enhance the Photo-Fenton process for the tertiary treatment of urban wastewater. The study shows that the PF-like process exhibits superior performance in removing contaminants compared to traditional PF process, especially for melamine. The PF-like process also has advantages in terms of higher residual concentrations of Fe2+ and lower precipitation of PO43-, making it a promising option for tertiary treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Mateus Mestriner Pituco, Paulo H. Marrocos, Ricardo J. Santos, Madalena M. Dias, Jose C. B. Lopes, Francisca C. Moreira, Vitor J. P. Vilar
Summary: This study proposes an innovative high-intensity mixer based on the NETmix technology to enhance the contact between ozone gas and water. The unique geometry of NETmix promotes successive contacting and splitting of flows, leading to higher mass transfer rates and an enriched ozone liquid stream. Experimental evaluation shows that downward flow of gas and liquid significantly enhances mass transfer phenomena. Furthermore, NETmix exhibits high energy utilization efficiency.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Environmental
Jessica de Matos Fonseca, Sandra M. Miranda, Joana P. Monteiro, Regina de Fatima Peralta Muniz Moreira, German Ayala Valencia, Alcilene Rodrigues Monteiro, Vitor J. P. Vilar
Summary: This study investigated the oxidation of ethylene using TiO2 photocatalysis in a mili-photoreactor, aiming to develop a clean postharvest technology. The results showed that the catalyst loading, deposition surface, and feed stream humidity strongly influenced the ethylene conversion and reaction rate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)