Article
Engineering, Chemical
Rui Yu, Yanling Yang, Zhiwei Zhou, Xing Li, Jingfeng Gao, Nan Wang, Jiaqi Li, Yongwang Liu
Summary: In this study, a ternary heterojunction composite of bismuth oxide, titanium dioxide, and reduced graphene oxide was successfully synthesized via a one-step hydrothermal process. The composite exhibited strong visible-light responsiveness and high separation efficiency of photogenerated carriers. It showed excellent degradation performance towards tetracycline and outperformed other composites. The photodegradation mechanism involved the generation of O-center dot(2)- radicals and holes, and the breakage of carbon-carbon double bonds and nitrogen-carbon bonds in tetracycline.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Sijia Liu, Tengyao Jiang, Maohong Fan, Gang Tan, Sheng Cui, Xiaodong Shen
Summary: In response to the global issue of excessive carbon dioxide emissions, this study synthesized TiO2-rGO composite aerogels for photoconversion of CO2 using a one-step hydrothermal and freeze-drying method. The composite aerogel demonstrated improved photocatalytic performance, efficiently converting CO2 into MeOH, CH4, and EtOH through enhanced absorption capability and fast molecular transfer. The introduction of 3D rGO promoted the light absorption efficiency of TiO2 and the specific chemical bonding between rGO and TiO2 effectively mitigated electron-hole pair recombination.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Juhua Luo, Ziyang Dai, Mengna Feng, Mingmin Gu, Yu Xie
Summary: This study provides an efficient strategy to fabricate nanocomposites with high stability and efficient charge separation. The nanocomposites exhibit excellent photocatalytic performance and magnetic separability under visible light.
Article
Biochemistry & Molecular Biology
Biyun Li, Xiaoxiao Gao, Jiangang Qu, Feng Xiong, Hongyun Xuan, Yan Jin, Huihua Yuan
Summary: A photocatalytic antibacterial composite of PDA-rGO/BiVO4 was prepared and showed enhanced bacteriostatic effect against E. coli under light irradiation, indicating potential for expanding the application of BiVO4 in biomedicine.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Ziru Yan, Kai Li, Dandan Shao, Qingyi Shen, Yi Ding, Shansong Huang, Youtao Xie, Xuebin Zheng
Summary: Restoration of nerve supply is crucial for bone defect repair, but often overlooked in the design of bone repair biomaterials. In this study, a ternary nanocoating with photoelectric conversion ability was developed for photoelectric stimulation of both bone and nerve repair. The nanocoating exhibited improved photo-electrochemical properties and enhanced osteoblastic differentiation and neurite outgrowth under blue LED exposure. The findings suggest that this nanocoating could be a promising approach to target nerve regeneration for stimulating osteogenesis in bone repair biomaterial design.
Article
Environmental Sciences
Yuancai Lv, Jianying Yu, Siyi Huang, Kaiyun Zheng, Guifang Yang, Yifan Liu, Chunxiang Lin, Xiaoxia Ye, Minghua Liu
Summary: A novel photocatalyst Ce0.9Zr0.1O2/SnIn4S8 was successfully prepared and applied for the degradation of antibiotic norfloxacin under visible light irradiation, showing good degradation efficiency and recyclable stability. Under optimized conditions, norfloxacin could be fully degraded in 60 minutes and completely mineralized in 4 hours.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Jianhua Hou, Tingting Zhang, Ting Jiang, Xiaoge Wu, Yongcai Zhang, Muhammad Tahir, Asif Hussain, Min Luo, JiJun Zou, Xiaozhi Wang
Summary: Bismuth oxyhalides (BiOX, X = Cl, Br, I) with two-dimensional/two-dimensional (2D/2D) heterostructures have been successfully prepared without using any solvent recently. The BiOX/RGO heterostructures exhibit oxygen-rich vacancies and a short fabrication time of 15 min, promoting carrier separation efficiency and visible-light absorption. The photocatalytic performance of BiOX/RGO composites in degrading organic pollutants was significantly enhanced, showing improved degradation rates compared to pure BiOX.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Chiing-Chang Chen, Janah Shaya, Kyriaki Polychronopoulou, Vladimir B. Golovko, Siriluck Tesana, Syuan-Yun Wang, Chung-Shin Lu
Summary: This study reports the preparation and detailed characterization of the stannum indium sulfide (SnIn4S8) semiconductor photocatalyst for degradation of the toxic insecticide ethiofencarb under visible-light irradiation. The as-prepared SnIn4S8 showed high catalytic efficiency and stability, and was found to be reusable in treating real water samples in three successive photodegradation experiments. The study demonstrates the prospect of SnIn4S8 photocatalysis in treatment of natural and contaminated water from extremely toxic organic carbamates like ethiofencarb.
Article
Green & Sustainable Science & Technology
Dipika Sharma, Jyoti Yadav, B. R. Mehta
Summary: The deposition of reduced graphene oxide layer on SnS thin films has been shown to improve their photoelectrochemical response, enhancing the photocurrent density and photostability while promoting charge carrier separation at the interface. The rGO layer acts as a protective layer for SnS in the electrolyte and serves as an electron reservoir to accept photoexcited electrons, highlighting its promising role in enhancing photoelectrochemical water splitting.
Article
Chemistry, Multidisciplinary
Lorenzo Lombardi, Alessandro Kovtun, Sebastiano Mantovani, Giulio Bertuzzi, Laura Favaretto, Cristian Bettini, Vincenzo Palermo, Manuela Melucci, Marco Bandini
Summary: This methodology involves environmentally friendly covalent functionalization of reduced graphene oxide (rGO) nanosheets with arylazo sulfones through visible-light irradiation. It allows various tagged aryl units to be conveniently accommodated on the rGO surface, with mild reaction conditions, absence of photosensitizers, functional group tolerance, and high atomic fractions. Control experiments for mechanistic elucidation (Raman analysis) and chemical nanomanipulation of the tagged rGO surfaces were also conducted.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Multidisciplinary Sciences
Sasireka Velusamy, Anurag Roy, Ezrah Mariam, Satheesh Krishnamurthy, Senthilarasu Sundaram, Tapas K. Mallick
Summary: This study synthesized a composite of reduced graphene oxide (rGO) and zinc oxide nanorods (ZnO) called rGO@ZnO, and tested its photocatalytic performance for reducing para-nitro phenol (PNP) to para-amino phenol (PAP) under both UV and visible light irradiation. The sample rGO(5)@ZnO exhibited remarkable photocatalytic activity, achieving a PNP reduction efficiency of approximately 98% within four minutes.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Harshavardhan Mohan, Vaikundamoorthy Ramalingam, Natesan Karthi, Sundaramoorthy Malathidevi, Taeho Shin, Janaki Venkatachalam, Kamala-Kannan Seralathan
Summary: The RGOCdS nanocomposite synthesized through solvothermal process showed high efficiency in degrading MeP and good recyclability. Photocatalytic experiments demonstrated the superior degradation performance of RGOCdS compared to pure CdS, without residual intermediates.
Article
Environmental Sciences
Qiansu Ma, Jie Ming, Xiang Sun, Hongjian Zhang, Guangqi An, Naoki Kawazoe, Guoping Chen, Yingnan Yang
Summary: An effective 2D/2D photocatalyst was fabricated in this study, which exhibited excellent removal of antibiotics, organic dyes, and waterborne bacteria. The properties of the photocatalyst and the mechanism of pollutant removal were investigated in detail.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Shadi Asgari, Ghodsi Mohammadi Ziarani, Alireza Badiei, Mohsen Setayeshmehr, Mahsa Kiani, Ali Pourjavadi
Summary: The treatment of water contaminated by bacteria is crucial, and nanomaterials with antibacterial properties show great potential for water disinfection. In this study, graphene oxide was synthesized and combined with chitosan and silver nanoparticles to create a composite nanofiber with enhanced photocatalytic activity. The composite nanofiber exhibited higher cytotoxicity and antibacterial activity under light irradiation. The optimum concentration of the composite nanofiber showed promising results in terms of cell viability, inhibition zone diameter, thermal stability, and tensile strength.
Article
Environmental Sciences
Mohamed K. Guediri, Derradji Chebli, Abdallah Bouguettoucha, Riadh Bourzami, Abdeltif Amrane
Summary: The study successfully prepared a high-performance Fe2TiO5/rGO photocatalyst and characterized its morphology and properties through various techniques. Experimental results confirmed the highly efficient photocatalytic degradation of methylene blue under visible light irradiation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Engineering, Environmental
Virender K. Sharma, Mingbao Feng, Dionysios D. Dionysiou, Hong-Cai Zhou, Chetan Jinadatha, Kyriakos Manoli, Mallory F. Smith, Rafael Luque, Xingmao Ma, Ching-Hua Huang
Summary: Efforts are being made to enhance the reactivity of ferrate by generating highly reactive iron intermediates (Fe-V and Fe-IV) from the tetraoxy anion of iron in the +6 oxidation state. Various strategies, such as addition of acid, metal ions, and reductants, are utilized to produce Fe-V and Fe-IV species for more efficient treatment of polluted water. Kinetic modeling and DFT calculations provide opportunities to distinguish between Fe-IV and Fe-V in order to improve oxidation reactions using ferrate.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Junjing Li, Zhaohui Zhang, Tengfei Li, Bin Zhao, Yun Liu, Yaqian Liu, Liang Wang, Dionysios D. Dionysiou
Summary: This study investigated the combination of potassium ferrate preoxidation with magnetic ion exchange resin adsorption as a strategy to reduce membrane fouling in ultrafiltration. The results showed that this combined process significantly reduced the accumulation rate and reversibility of membrane fouling. The mechanism of synergy between potassium ferrate preoxidation and magnetic ion exchange resin adsorption in pollutant removal was further clarified.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Orthodoxia Zervaki, Braden Stump, Patricia Keady, Dionysios D. Dionysiou, Pramod Kulkarni
Summary: This article describes the design and characterization of an aerosol NanoSpot(TM) collector for direct electron and optical microscopy, and laser spectroscopy analysis. The collector uses a water-based, laminar-flow, condensation growth technique and can collect particles as small as 7 nm. Experiments were conducted to study the collection efficiency and concentrate the NanoSpot(TM) collector. The collected particles were analyzed using electron microscopy and Raman spectroscopy.
AEROSOL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qian Fu, Yi Mu, Lixia Yang, Yi Mei, Meifeng Wu, Jian-Ping Zou, Dionysios D. Dionysiou, Shenglian Luo
Summary: In this study, beta-FeC2O4.2H2O was used to activate molecular oxygen and generate abundant hydroxyl radicals for efficient degradation of toxic Microcystin-LR. The electron utilization efficiency of beta-FeC2O4.2H2O towards hydroxyl radicals is high, ensuring a sustainable hydroxyl radical stream. The method is cost-effective, highly effectual, and environmentally benign, making it promising for large-scale application in water treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Su-Mei Zheng, Zhi-Hua Yuan, Dionysios D. Dionysiou, Lu-Bin Zhong, Fei Zhao, Jia-Cheng E. Yang, Yu -Ming Zheng
Summary: We report the synthesis of a nitrogen-doped hierarchical porous carbon (NPC) derived from waste silkworm cocoons, which shows promising potential as a CDI electrode for desalination applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Liguo Song, Jingang Yang, Hao Sui, Yuhang Wei, Chengqi Deng, Lingrun Meng, Feng Guo, Zhitao Han, Xinxiang Pan, Dionysios D. Dionysiou
Summary: This study investigates the control of NO in marine ship exhaust and proposes a new method for NO2 removal based on hydrodynamic cavitation. The results show that hydrodynamic cavitation can delay but not prevent the production of NO, and the accumulation and decomposition of HNO2 are the primary causes of NO formation. Further experiments reveal that ClO2, H2O2, and Na2S2O8 can slightly increase the NO2 removal efficiency, while NaClO2 is less effective than water.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Dan Yu, Jiahong He, Taiping Xie, Jun Yang, Jiankang Wang, Jinchen Xie, Huiting Shi, Zongyu Gao, Bin Xiang, Dionysios D. Dionysiou
Summary: This study investigates the enhancement of antibiotic degradation in water through material-enhanced peroxymonosulfate (PMS) activation. By partially substituting the B-sites of perovskite oxides, oxygen vacancies are introduced and catalytic activity is enhanced. Experimental results show that the adsorption capacity of perovskite oxides to PMS and the presence of oxygen vacancies have a synergistic effect on the degradation reaction.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Han Zheng, Jiangkun Du, Hua Zhong, Qian Yuan, Jiaquan Zhang, Wei Kang, Qingbin Sun, Min Tao, Wensheng Xiao, Dionysios D. Dionysiou, Ying Huang
Summary: A sulfur-modified Fe3O4 composite (SF10) with excellent magnetic properties was prepared and showed superior performance in the activation of peroxydisulfate for atrazine degradation. The main active species were hydroxyl radical and sulfate radical. Sulfur modification introduced pyrite and pyrrhotite phases into Fe3O4 structure, enhancing its catalytic activity and electron transfer capacity. The study provides insights into the synergism between sulfur and iron and expands the application of Fe3O4 in PDS-based advanced oxidation processes.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Jingang Yang, Liguo Song, Chengqi Deng, Hao Sui, Dionysios D. Dionysiou, Zhitao Han, Minyi Xu, Xinxiang Pan
Summary: This study proposes a novel non-circulation cleaning method using combined hydrodynamic cavitation and chlorine dioxide for simultaneous desulfurization and denitration of ship exhaust. The results show that hydrodynamic cavitation effectively removes sulfur dioxide, and the combined method performs better than hydrodynamic cavitation alone. Further experiments reveal that the denitration efficiency can reach around 95.0% with the optimized parameters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Editorial Material
Environmental Sciences
Huijiao Wang, Yujue Wang, Dionysios D. Dionysiou
Summary: This Special Issue includes papers on the mechanistic understanding, development, and implementation of advanced oxidation processes (AOPs) for removing emerging contaminants in water and wastewater treatment. The issue received attention from researchers worldwide and covers various AOPs such as electrochemical, photocatalytic, plasma, and Fenton-related processes. The guest editors are pleased with the innovative and meaningful contributions and hope that this Special Issue will promote the understanding and application of AOPs for emerging contaminant removal.
Article
Chemistry, Physical
Junjing Li, Shumin Ma, Ziyan Qi, Jing Ding, Menghua Yin, Bin Zhao, Zhaohui Zhang, Yu Wang, Hongwei Zhang, Liang Wang, Dionysios D. Dionysiou
Summary: A new efficient Pd/NiFe-MOF/foam-Ni composite electrode was developed to improve the particle dispersion and catalytic activity of the palladium electrode. The composite electrode showed good resistance to sulfites and had a high electrocatalytic activity in the presence of various ions in wastewater. The introduction of nickel-iron bimetallic organic framework (NiFe-MOF) improved the dispersion and electrochemical active surface area (ECSA) of Pd.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Junjing Li, Xiuwen Cheng, Huixuan Zhang, Jianfeng Gou, Xinyi Zhang, Di Wu, Dionysios D. Dionysiou
Summary: In this study, a plain strategy for fabrication of a novel composite ZnO/CuCo2O4 was designed, and it was applied as a catalyst for peroxymonosulfate (PMS) activation to decompose enrofloxacin (ENR) under simulated sunlight. The results showed that the ZnO/CuCo2O4 composite could significantly activate PMS under simulated sunlight, leading to the generation of more active radicals for ENR degradation. The study also evaluated the influences of various experimental factors on ENR degradation and proposed several reasonable ENR degradation pathways. The novel strategy provided by this study integrates state-of-the-art material science and advanced oxidation technology for wastewater treatment and environmental remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Cen Zhao, Luis E. Arroyo-Mora, Anthony P. DeCaprio, Dionysios D. Dionysiou, Kevin E. O. 'Shea, Virender K. Sharma
Summary: The study demonstrates the effective degradation of the cyanotoxin CYN and its model compound 6-HOMU using ferrate(VI) oxidation. The uracil ring of CYN is oxidized and cleaved, leading to the generation of nontoxic cylindrospermopsic acid. This method shows promise for the treatment of CYN and uracil-based toxins in drinking water.
Article
Engineering, Environmental
Chao Zhang, Huike Zhang, Xin Wan, Yue Xie, Michael J. Bentel, Zhanjiang Yu, Zhenguo Chen, Jiaan He, Junlang Li, Xuezhu Xiang, Xinzhi Wang, Zhaoli Wang, Guang-Guo Ying, Dionysios D. Dionysiou, Mingzhi Huang
Summary: This study explores the use of N-doped graphdiyne nanotubes (NGNTs) as a catalyst for metal-free PMS activation in water remediation. The NGNT-PMS system decomposes heterocyclic contaminants via electron-transfer-mediated nonradical oxidation, where metastable NGNT-PMS* complexes act as the primary oxidants. The NGNT-PMS system exhibits higher reaction rates compared to N-doped carbon nanotubes (NCNTs) and graphene oxide (NGO) systems, and also plays a crucial role in the cleavage of pyridine heterocycles and C-Cl bonds.
ACS ES&T ENGINEERING
(2023)
Article
Engineering, Environmental
Ying Zhu, Haojie Ding, Jiahui Fan, Shuan Liu, Yunqian Song, Huiping Deng, Chun Zhao, Dionysios D. Dionysiou
Summary: A novel water treatment process based on the combination of electrolysis with permanganate and peroxydisulfate was investigated, and the combination showed significant synergistic effects in degrading refractory organics. The process could efficiently mineralize diclofenac with low energy consumption. The mechanism study revealed the role of electricity in activating peroxydisulfate and generating reactive species for organic degradation.
ACS ES&T ENGINEERING
(2022)
