Article
Chemistry, Multidisciplinary
Xiao Zhang, Ping Yang, San Ping Jiang
Summary: Utilizing red g-C3N4 nanosheets as seeds for the edge-epitaxial growth of yellow g-C3N4 to form type II heterostructures results in superior photocatalytic activity in enhancing H-2, CO, and CH4 evolution rates.
CHEMICAL COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Xingguang Chen, Beibei Chu, Qianhui Gu, Hua Liu, Cun Li, Wenzhe Li, Jian Lu, Dianhui Wu
Summary: The protonated g-C3N4/oxygen-doped g-C3N4 material was utilized for efficient degradation of deoxynivalenol (DON) in water environment, resulting in significantly higher degradation rate and reaction rate constant. Lower toxicity intermediates were identified during the degradation process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Yao Tang, Xuemei Hu, Zhenggang Xu, Xiaoyong Chen, Yelin Zeng, Guangjun Wang, Yonghong Wang, Gaoqiang Liu, Yunlin Zhao, Yaohui Wu
Summary: This study demonstrated that g-C3N4/biochar was able to maintain the relative stability of the bacterial community in riverbed sediment and mitigate the negative effects of photocatalysts to some extent, making biochar an ecological remediation agent with great potential for application.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Beiyi Zhang, Junqi Li, Qianqian Song, Siye Lv, Yunli Shi, Hui Liu
Summary: An efficient bifunctional electrocatalyst has been developed for electro-chemical overall water splitting, with excellent performance in both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline medium.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Sandhanasamy Devanesan, Mohamad S. AlSalhi, Xinghui Liu, Rajasree Shanmuganathan
Summary: In this study, a novel method for synthesizing g-C3N4-Ag nanocomposite was presented and its efficiency in PAH removal and antimicrobial activity was evaluated. The results showed that g-C3N4-Ag nanocomposite has the potential to remediate organic pollutants and kill bacterial and fungal pathogens.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Lin Cai, Xuefeng Wei, Hui Feng, Guangjin Fan, Changdan Gao, Haitao Chen, Xianchao Sun
Summary: The study found that g-C3N4 nanosheets inhibit the growth and reproduction of Phytophthora capsici through multiple mechanisms such as inducing ROS stress, disrupting cell membranes, and damaging cell ultrastructure, ultimately promoting plant growth.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
V. W. Elloh, E. Okoampa Boadu, D. Abbeyquaye, D. E. Anderson, A. Yaya
Summary: The interactions between monolayer graphitic carbon nitride (g-C3N4) and conjugated polymer poly(9-vinylcarbazole) (PVK) have been explored. The band alignment and charge transfer between g-C3N4 and PVK were calculated, and it was found that the charge transfer leads to a polarized field within the interface region, benefiting the separation of photogenerated carriers.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Energy & Fuels
Shuhang Chen, Wentao Wang, Yachao Hao, Jianfang Meng, Yangcan Zhao, Siyan Wang, Serge Zhuiykov, Hongyan Xu
Summary: By treating g-C3N4 with acid and self-assembling it with GO-COOH, the photocatalytic H2 production performance of g-C3N4 can be greatly improved. Acid treatment changes the structure of g-C3N4 and increases its specific surface area. Functionalization of GO enhances the electron-accepting ability and effectively separates the photogenerated charges by increasing the absorbance.
Article
Engineering, Environmental
Longqu Xiao, Shiyang Zhang, Boqi Chen, Panpan Wu, Ningdong Feng, Feng Deng, Zhi Wang
Summary: In this study, a new type of photocatalyst, biochar/g-C3N4 (BC/CN) composite, was prepared from melamine and waste crawfish shells and used for the degradation of enrofloxacin (ENR) wastewater under visible light. The structure and properties of the composites were characterized, demonstrating significant synergistic effects between BC and CN. The catalyst with a BC to CN ratio of 2% exhibited the best visible-light photocatalytic performance. The main oxidation radicals responsible for ENR removal were identified as & BULL;O2 radicals, which first attacked the piperazine moiety of ENR.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Energy & Fuels
Osman Polat, Nurettin Sahiner
Summary: Solar energy, as the largest renewable energy source, can be used for photocatalytic water splitting (PWS) to produce hydrogen. PWS has made significant advancements in recent years, including the application of different catalysts and systems.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Francisco Javier Cordova-Almeida, Darshana Rajput, J. G. Torres-Torres, S. Gallardo-Hernandez, Adrien Cervantes-Uribe, Jesus A. Diaz-Real, Srinivas Godavarthi, Goldie Oza
Summary: The mesostructured heterojunctions of SrTiO3/g-C3N4 were synthesized using hydrothermal method with different weight percentages of SrTiO3. The CN-ST15 sample showed the highest photocatalytic activity in degrading methylene blue.
Review
Biochemistry & Molecular Biology
Javiera Ramos-Zuniga, Nicolas Bruna, Jose M. Perez-Donoso
Summary: Copper is a historically used metal to prevent infections and has potential in combating infectious disease outbreaks. Copper nanoparticles and surfaces are common antimicrobial copper-based technologies. The mechanisms explaining their unique antimicrobial properties are not fully understood, but involve membrane rupture, ion accumulation, protein inactivation, and DNA damage. Understanding the toxicity mechanisms of copper nanoparticles and surfaces is important for developing efficient antimicrobial technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Chemical
Wenyuan Ye, Jinjie Chen, Na Kong, Qingyuan Fang, Mingqiu Hong, Yuxiang Sun, Yifan Li, Patricia Luis, Bart Van der Bruggen, Shengqiong Fang, Shuaifei Zhao, Jiuyang Lin, Shungui Zhou
Summary: A superhydrophilic/underwater superoleophobic nanocomposite membrane with photocatalytic properties was developed by vacuum-assisted filtration. This membrane exhibited excellent separation performance and biofouling resistance, making it promising for practical oily wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
M. Afkari, S. M. Masoudpanah, M. Hasheminiasari, S. Alamolhoda
Summary: Alpha-Fe2O3/Fe3O4/g-C3N4 nanocomposites were prepared in-situ by solution combustion. The effects of iron oxide content on magnetic, optical, and photocatalytic properties were investigated. The results showed that the nanocomposites with 37 wt. % iron oxides had superior photocatalytic activity compared to pristine g-C3N4, and exhibited a higher photocurrent density due to lower charge recombination rate.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
N. A. Chopan, H. -T. -N. Chishti
Summary: Polypyrrole (PPy) and graphitic carbon nitride (g-C3N4) nanoparticles were added to ZnO nanorods to form a g-C3N4/PPy/ZnO (GPZ) photocatalytic system, resulting in improved charge-carrier transmission and separation. The GPZ photocatalyst exhibited outstanding photocatalytic activity, effectively degrading 99.0% of RhB within 60 minutes. The GPZ heterostructure also demonstrated superior antibacterial activity compared to other samples and excellent stability after multiple cycles.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Engineering, Environmental
Yi Li, Xinyan Xiong, Chi Zhang, An Liu
Summary: The long-term decline in dissolved oxygen levels in freshwater systems poses a global concern, but a sustainable restoration strategy using local sediment-based biochar has been proposed in this study, which shows promising re-oxygenation performance and nutrient cycle regulation effects.
Article
Environmental Sciences
Xinyi Zhou, Chi Zhang, Yi Li, Xinyan Xiong, Ye Wang, Shengxiang Rong
Summary: This study investigated the synergistic removal of microbial nitrate and CO2 fixation in darkness using a novel g-C3N4@WO3 memory photocatalyst. The results showed that within 48 hours, 98.6% of nitrate was removed and 17.7% of CO2 was fixed by microorganisms in the presence of g-C3N4@WO3 memory photocatalyst. The mechanism analysis revealed that the photocatalyst can promote electron transfer and enhance enzyme activities within microorganisms.
Article
Green & Sustainable Science & Technology
Longfei Wang, Yiheng Zhao, Yi Li, Bian Yao, Chi Zhang, Wenlong Zhang, Lihua Niu, Huanjun Zhang
Summary: This study found that iron-loaded biochars (FeBCs) can accelerate the simultaneous removal of nitrate and bisphenol A (BPA) from aquatic systems. FeBCs have high electron transfer efficiency and redox activity, which can enhance microbial metabolism and degradation ability. The addition of FeBCs increased the activity of denitrifying enzymes and the level of nitrate-reducing genes, as well as the abundance of bacterial genera responsible for BPA degradation. Moreover, the ferric-containing functional groups were significantly correlated with nitrate-reducing enzymes and metabolic activities, facilitating the simultaneous removal of nitrate and BPA.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Weiwei Song, Ziying Liao, Longfei Wang, Yi Li, Wenlong Zhang, Yuang Ji, Jiaying Chen
Summary: The study examines the relationship between hydrodynamics and the distribution of antibiotics in the diverging area. It finds that antibiotics are mainly distributed in the branch mouth, and their concentrations are influenced by sediment particle size and oxygen content. The ecological risk of antibiotics decreases with the distance from the central area. Changes in river basin hydrological conditions play a significant role in influencing antibiotic concentrations.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Hossam Zakaria, Yi Li, Mohamed M. Fathy, Xinyi Zhou, Xinyan Xiong, Ye Wang, Shengxiang Rong, Chi Zhang
Summary: A novel black titanium oxide/plasmonic titanium nitride@activated coconut biochar (TiO2-x/TiN@ACB) composite was designed to have both photocatalytic and photothermal functions, with enhanced band-gap narrowing, light absorbance extension, and charge carriers separation. The composite exhibited efficient photocatalytic reduction of hexavalent chromium (Cr(VI)) and water evaporation upon IR and Vis light illumination, demonstrating its potential for efficient water cleaning.
Article
Environmental Sciences
Longfei Wang, Yutao Wang, Yi Li, Linqiong Wang, Jinxin Zhu, Wenlong Zhang, Huanjun Zhang, Lihua Niu, Jun Wu
Summary: Controlled surface water systems, such as those with dams, can cause dynamic changes in water levels, resulting in altered flow exchange patterns in the hyporheic zones. However, the effects on nitrogen transformation, dissolved organic matter (DOM) composition, and microbial communities under different scenarios of water source and hyporheic exchange have been poorly studied. This research investigated the nitrogen transformation in hyporheic zone sediments and focused on the relationship between microbial community structure, biological functions related to nitrogen transformation, and sediment-attached DOM compositions. The study found that the mixing of river water and groundwater enhanced microbial diversity, complexity of microbial co-occurrence networks, and nitrogen transformation functions. The composition of sediment-attached DOM was primarily humic fractions after hyporheic exchanges. Species such as Nitrospinae, Dinghuibacter, and Lentimicrobium played key roles in metabolizing nitrogen and DOM in the hyporheic sediments. This study provides valuable insights into the effects of water chemistry changes on nitrogen transformation, DOM compositional changes, and the linkages between community structure and DOM fractions in the hyporheic zones.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Yi Li, Ye Wang, Chi Zhang, Zhengguo Pan, Shuguang Han
Summary: This study presents a cost-effective and eco-friendly strategy for eliminating Microcystis aeruginosa, a common cyanobacteria, using a combination of H2O2 pre-oxidation and enhanced pressurization. The optimized treatment conditions achieved a high removal rate of 57.84% within 24 hours and complete suppression after 7 days. The study also identified the role of intracellular reactive oxygen species and the nonviolent impairment of pressurization in the synergistic algae removal.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Environmental Sciences
Shenyang Pan, Wenlong Zhang, Yi Li, Chi Zhang, Huanjun Zhang, Lihua Niu, Longfei Wang
Summary: This paper provides a quantitative and qualitative analysis of research trends and hotspots in the water environment of the Yangtze River Basin (YRB) through bibliometric means. The results show that future management of the YRB requires consideration of all elements of the basin, including water resources, water quality, and aquatic ecology, and ecological risk, emerging bioinformatics technologies, and source apportionment will become new research directions.
RIVER RESEARCH AND APPLICATIONS
(2023)
Article
Chemistry, Physical
Jinlong Qin, Huajie Huang, Jian Zhang, Fengyi Zhu, Lang Luo, Chi Zhang, Lu Yang, Quanguo Jiang, Haiyan He
Summary: Due to the diminishing energy resources and environmental pollution issues, direct methanol fuel cells (DMFCs) have gained a high profile in recent decades as a green energy generator. In this research, ultrasmall Rh nanocrystal-decorated heterostructures were designed and fabricated from Zn-based zeolites imidazolate frameworks (ZIFs) and Ti3C2Tx MXene nanosheets (Rh/ZIF-MX) via a bottom-up stereoassembly strategy. The resulting Rh/ZIF-MX nanoarchitectures exhibited superior electrocatalytic performance for methanol oxidation, surpassing traditional Rh catalysts directly supported on carbon materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Environmental Sciences
Huanjun Zhang, Yanan Yu, Yi Li, Li Lin, Chi Zhang, Wenlong Zhang, Longfei Wang, Lihua Niu
Summary: Intimately coupled photocatalysis and biodegradation (ICPB) is an effective technology for removing refractory contaminants from water. In this study, a novel three-dimensional porous hydrogel carrier, BC/g-C3N4, was developed and used in the ICPB system for the first time. The ICPB system showed a significantly higher removal rate (96.0%) of tetracycline hydrochloride (TCH) compared to other systems. Photo-electrochemical tests confirmed the superior electron transfer ability of the ICPB system. Microorganisms played a crucial role in the mineralization process of TCH and remained active after the ICPB degradation experiment. The study highlights the potential of the novel ICPB carrier and system in practical applications.
Article
Engineering, Environmental
Mengqiao Li, David P. Durkin, Gordon Waller, Yaochun Yu, Yujie Men, Tao Ye, Hanning Chen, Danmeng Shuai
Summary: In this study, we evaluated the stability, aging, and environmental impact of g-C3N4 nanosheets under the attack of free chlorine and reactive chlorine species (RCS). We found that g-C3N4 nanosheets were slowly oxidized by free chlorine, but decomposed rapidly when ClO· and/or Cl2·- were the key oxidants. Our study highlighted the high electrophilic attack efficacy of Cl2·- and ClO· on g-C3N4 nanosheets, compared to previous studies. Additionally, a trace level of covalently bonded Cl was introduced to g-C3N4 nanosheets after free chlorine and RCS oxidation. This study provides insights into the environmental fate and transformation of g-C3N4 nanosheets and guides the design of reactive, robust, and safe nanomaterials for engineering applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhe Zhou, Mengqiao Li, Yuxin Zhang, Lingchen Kong, Virginia F. Smith, Mengyang Zhang, Anders J. Gulbrandson, Gordon H. Waller, Feng Lin, Xitong Liu, David P. Durkin, Hanning Chen, Danmeng Shuai
Summary: Fe-Fe double-atom catalysts were developed to activate peroxymonosulfate (PMS) for disinfection, outperforming other catalysts for oxidation. The Fe-Fe double-atom catalyst enhanced the disinfection kinetics of murine coronaviruses by 2.17-4.60 times compared to PMS treatment alone in various environmental media. The study also elucidated the molecular-level mechanism of murine coronavirus inactivation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Xinyan Xiong, Yi Li, Xinyi Zhou, Chi Zhang
Summary: Anthropogenic deoxygenation of freshwater systems has raised global concern due to its potential threats to biodiversity, nutrient loading, and greenhouse gas emissions. This study developed a new method using oxygen-carrying dual-modified sediment-based biochar to restore hypoxic freshwater and reduce methane emissions. The results showed that the modified biochar significantly increased dissolved oxygen concentration and decreased methane emissions. Microbial analysis indicated that the restored oxygen-rich environment promoted the expression of methane oxidation genes. The study highlights the potential of improving water quality and microbial community reconstruction in reducing greenhouse gas emissions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Green & Sustainable Science & Technology
Chi Zhang, Xin Zhang, Hongchen Shen, Danmeng Shuai, Xinyan Xiong, Ye Wang, Huajie Huang, Yi Li
Summary: This review focuses on the dual self-cleaning surfaces with both superhydrophobicity and photocatalytic activity, providing comprehensive information on their principles, synthesis strategies, key properties, and applications. It also outlines future perspectives for the development of such surfaces.
JOURNAL OF CLEANER PRODUCTION
(2023)
