Article
Chemistry, Physical
Yu Ma, Xingyue Qian, Muhammad Arif, Jiawei Xia, Huike Fan, Jing Luo, Guangyu He, Haiqun Chen
Summary: In this study, a Bi4O5Br2/MIL-88B(Fe) Z-scheme heterojunction photocatalyst was fabricated using a simple hydrothermal and coprecipitation method. The heterojunction catalyst greatly improved the utilization of visible light and exhibited excellent photodegradation performance for TCH. Moreover, the Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction showed the highest photodegradation of TCH within 80 minutes with a rate of -93.04%. The results suggest that the Z-scheme heterojunction can be a promising approach for constructing high-efficiency materials for wastewater treatment.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Panbing Hu, Congfei Yao, Lin Yang, Yanmei Xin, Yuqing Miao
Summary: MOFs have attracted attention in photocatalysis due to their unique structure and semiconductor properties. A new MIL-88B(Fe)/Bi2WO6 composite was successfully prepared, showing excellent photocatalytic performance under visible light irradiation. The composite material has a large specific surface area, providing more active sites, and exhibits stability and high degradation efficiency.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Chemical
Manpreet Kaur, Surinder Kumar Mehta, Pooja Devi, Sushil Kumar Kansal
Summary: Efficient Bi2WO6/NH2-MIL-88B(Fe) heterostructure photocatalyst was prepared for the decomposition of tetracycline antibiotics, exhibiting enhanced degradation efficiency under solar illumination. Detailed studies were conducted on adsorption, kinetics, and isotherms, confirming the superior photocatalytic capability of the heterostructure. The research findings provide insights into the mechanisms of photocatalytic degradation and highlight the potential application of the synthesized composite in environmental remediation.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Qi Wang, Kejie Zhang, Shuzhen Zheng, Xiao Hu, Longyang Wang, Hao Du, Derek Hao, Guoxiang Yang
Summary: In this study, a novel Z-scheme heterojunction AgI/MIL-100 nanocomposite with excellent photocatalytic performance and strong redox properties was successfully fabricated. The experimental results showed that the Z-scheme heterostructure significantly enhanced charge transfer efficiency between the interfaces and exhibited excellent photocatalytic effects on bacteria inactivation and Cr(VI) reduction.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Xudong Yin, Xiaojie Sun, Yufeng Mao, Ruzhen Wang, Dehao Li, Wenyu Xie, Zhenghui Liu, Zhisen Liu
Summary: This study successfully synthesized a new type of composite photocatalyst, MT-BiVO4, composed of BiVO4 microspheres containing coexisting phases of M-BiVO4 and T-BiVO4, loaded onto P-doped g-C3N4 nanosheets (PCNS). The morphology, structure, and photoelectrochemical properties of the composite photocatalysts were characterized, and their performance and stability in photocatalytic degradation of TC-HCl were examined. The findings showed that the photocatalytic activity of the composite catalyst was significantly influenced by the percentage of M-BiVO4 in MT-BiVO4. Furthermore, the 5% BVO/PCNS composite exhibited excellent photocatalytic performance due to the synergistic effects of P-doped g-C3N4, MT-BiVO4 isotype heterojunction effects, and the Z-scheme heterojunction constructed from MT-BiVO4 and PCNS. The composite material showed high reusability and stability, making it a promising candidate for practical wastewater treatment applications. This study presents a new approach for preparing photocatalysts synergized by isotype and Z-scheme heterojunctions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zengmin Wu, Chongyue Jin, Zhilin Li, Daien Yang, Yuanhua Xie, Min Wang
Summary: The MoS2 and g-C3N4 nanosheet co-modified Bi2WO6 ternary heterostructure catalyst (g-C3N4/MoS2/Bi2WO6) showed improved photocatalytic ability in degrading tetracycline under visible light with H2O2, with increased visible-light absorption and separation rate of photogenerated electron-hole pairs, demonstrating promising potential for further research in the field of antibiotics degradation.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Feiyue Jia, Donghua Zhao, Mengzhao Shu, Feifei Sun, Dongbo Wang, Chen Chen, Yu Deng, Xiaoming Zhu
Summary: Co/Fe-MIL-100, which was modified by adding Co2+ in the synthesis process, showed satisfactory performance in removing tetracycline. It had high removal efficiency in the initial concentration range and could still remove a significant amount of tetracycline at higher concentrations. The coexistence of inorganic anion decreased the adsorption capacity of tetracycline, with CO32- having a more noticeable inhibitory effect than Cl-. The Langmuir model fitting had a higher correlation coefficient and the kinetics better fitted a pseudo-second-order reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Weiguo Xu, Jun Xu, Qiuya Zhang, Zeping Yun, Qiaosheng Zuo, Liping Wang
Summary: The study successfully prepared a visible light-driven carbon nanodots/MIL-100(Fe) photocatalytic material using an in situ synthesis method, which showed high efficiency in degrading tetracycline. The superior performance of the composite material is attributed to the ability of carbon nanodots to act as acceptors and donors of electrons, promoting electron transfer and inhibiting electron-hole recombination. Additionally, the composite material demonstrated high stability after multiple cycles of the photodegradation reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Xingxing Huang, Yingzhang Shi, Cheng Liu, Zhiwen Wang, Jinhong Bi, Jimmy C. Yu, Ling Wu
Summary: A series of Cu2O clusters/MIL-100(Fe) heterojunctions were constructed and achieved efficient nitrogen fixation performance. The formation of heterojunctions improves catalytic performance by regulating energy band structure and promoting separation of photogenerated electron-hole pairs. Cu-O surface interaction is confirmed to be the key for efficient electron transfer.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Guangyu Wu, Qi Liu, Li Ma, Liting Tian, Jie Ran, Yuwei Pan, Jiangang Han, Weinan Xing
Summary: This study successfully synthesized a novel MIL-101(Fe)/Bi2WO6 photocatalyst, which showed high efficiency in degrading organic pollutants under visible light irradiation. By superimposing the photo-fenton effect, a 1O2 dominant Fenton assisted photocatalytic system was constructed, further enhancing the degradation efficiency. This research provides new insights into the design and development of photocatalysts and demonstrates their significant application value in environmental remediation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Acoustics
Kai Zhang, Jingjing Zhang, Xue He, Yue Zhao, Amir Zada, Anzhong Peng, Kezhen Qi
Summary: Sonocatalysis using an organic/inorganic hybrid composite catalyst showed greatly improved efficiency in removing tetracycline antibiotics. By adjusting different parameters, the optimized composite (20% Fe3O4@MIL-100(Fe)/ZnS) was able to remove 78.25% of the antibiotic in 20 minutes with the cost of 1 mL of H2O2. The superior performance of the composite system is attributed to efficient interface contact, effective charge transfer, accelerated transport capabilities, and strong redox potential.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Physical
Jiamin Wei, Qing Wang, Mian He, Shuai Li, Yunan Zhang, Yang Yang, Shipeng Luo, Lianshe Fu, Xin Wang, Tinghai Yang
Summary: Researchers have developed a Fe (III) doping modified AgI/NH2-MIL-68(In/Fe) Z-scheme heterojunction composite with unique charge transmission performance. The optimized composite, ANM-50, showed significantly higher photocatalytic activity for tetra-cycline degradation compared to other materials used in the study. The photocatalytic procedure resulted in the generation of Ag nanoparticles, which acted as a charge transfer highway and improved charge transfer efficiency and stability of the heterojunction.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jiafu Qu, Xiaogang Yang, Chunxian Guo, Yahui Cai, Zuoxi Li, Jundie Hu, Chang Ming Li
Summary: A Z-scheme BiVO4/NiCo2O4 heterojunction system was designed in this study, which reduced the energy barrier and improved the oxidation ability of BiVO4, leading to efficient separation and transfer of photogenerated carriers. The photocatalyst exhibited excellent O-2 evolution performance and improved efficiency compared to pristine BiVO4, showing great potential for efficient photocatalytic O-2 evolution and providing fundamental insights for the design of efficient water oxidation heterojunctions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Ruting Yuan, Mingtao Wang, Lijun Liao, Wei Hu, Ziyu Liu, Zhaohui Liu, Liping Guo, Ke Li, Yuezhi Cui, Feng Lin, Furong Tao, Wei Zhou
Summary: In this study, a Bi2WO6/TiO2 heterojunction photocatalyst was fabricated to achieve 100% inhibition of N2O formation during photo-SCR of NOx. The optimized composite showed high photocatalytic efficiency and provided a new perspective for fabricating catalysts in the field of pollutants removal with toxic byproduct control.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Xiaojun Dai, Sheng Feng, Wei Wu, Yun Zhou, Zhiwei Ye, Yang Wang, Xun Cao
Summary: By introducing ZIF-8 through in-situ growth, the photocatalytic activity of Bi2WO6 was improved. The addition of ZIF-8 effectively inhibited the recombination of photogenerated electron-hole pairs and greatly enhanced the photocatalytic activity. The Bi2WO6/ZIF-8 composite exhibited excellent performance in degrading tetracycline and could be reutilized multiple times without loss of catalytic performance.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Energy & Fuels
Wenzhe Zhang, Benyi Xiao, Ke Zhang, Hong Chen, Xuesong Guo
Summary: In this study, the effects of seven different ratios (SM/RS) on the co-digestion of SM and RS mixtures were investigated. The results showed that the highest methane yield and organic matter degradation rates were obtained at the ratio of 1:1. The methane content in biogas and the pH, total alkalinity, and total ammonia nitrogen of the digestate decreased with the increase of RS proportion and decrease of SM proportion. Additionally, co-digestion significantly improved the reaction rates of the four AD steps.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Agricultural Engineering
Hong Chen, Jicheng Yuan, Qianfeng Xu, Enzhe Yang, Tao Yang, Lixiu Shi, Zhihua Liu, Hanbo Yu, Jiao Cao, Quan Zhou, Jing Chen
Summary: By combining up-flow anaerobic sludge blanket (UASB) and anaerobic membrane bioreactor (AnMBR), a process for treating swine wastewater was developed and achieved high removal efficiencies of 96% for chemical oxygen demand (COD) and 63% for total phosphorous (TP). The dominant bacterial groups were Methanosaeta and Methanobacterium, which converted complex compounds into organic acids for methanogenesis.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Hong Wang, Xiaohu Dai, Yu Hua, Donghai Yang, Hong Chen
Summary: Low-strength ammonia and temperature pose challenges to the application of the partial nitritation-anammox (PNA) process in treating mainstream wastewater. This study investigated the effects of various substrate concentrations and temperatures on nitrogen removal performance, biochemical reaction rate, and specific activity in a single-stage PNA system. The results showed that low ammonia concentration caused a decline in reaction rate and activity of anammox bacteria, while low temperature resulted in a significant decrease in the relative abundance of anammox bacteria. Changes in metabolic pathways suggest that the PNA system can adapt to low substrate concentrations and temperatures by facilitating substance transport and reducing energy consumption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Hong Chen, Zhen Luo, Yanxiao Wei, Zhenyu Deng, Enzhe Yang, Hong Wang, Jing Chen, Eli Hendrik Sanjaya, Zhihua Liu, Sha Wu
Summary: In this study, a comprehensive assessment of reactor performance, sludge characteristics, and microbial community characteristics was conducted to investigate the complex inhibitions leading to the deterioration of reactor performance in anaerobic treatment of monosodium glutamate wastewater under low COD/sulfate ratios. The decrease in gas yield was attributed to the complex competition between sulfate-reducing bacteria (SRB) and methane-producing archaea (MPA), resulting in a decreasing number of MPA. The competitive advantage of SRB for electrons led to the production of more sulfides in the reactor, further inhibiting the activity of MPA.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Review
Environmental Sciences
Linjun Wu, Tao Jin, Hong Chen, Zhiqiang Shen, Yuexi Zhou
Summary: This review addresses the gaps in the understanding of the methanogenesis contribution, characterization techniques, and downstream processes of conductive materials (CMs)-led direct interspecies electron transfer (DIET) in anaerobic digestion (AD). It reveals that the stimulation of methanogenesis cannot be solely attributed to DIET and emphasizes the importance of accurate characterization methods for identifying the interactions involved in syntrophic metabolism. The type of CMs also significantly affects AD downstream processes. Establishing a mathematical model for DIET is identified as a central bottleneck in understanding its mechanism in greater depth.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Environmental Sciences
Hong Chen, Ke Liu, Enzhe Yang, Jing Chen, Yanling Gu, Sha Wu, Min Yang, Hong Wang, Dongbo Wang, Hailong Li
Summary: This review focuses on the microecology in the existing novel biological nitrogen removal process, including the growth characteristics and interactions of functional microorganisms, as well as the effects of different influencing factors on microbial communities evolution. It also explores the influence of quorum sensing (QS) systems on nitrogen removal microbes and proposes the need for further investigation into the mechanisms of action and composition of QS system circuits. Molecular analysis techniques and systems ecology theory are suggested for future exploration of microbial species and ecological niches to enhance the development of the novel biological nitrogen removal process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Hong Wang, Hong Chen, Shiyu Liu, Lei Li, Donghai Yang, Xiaohu Dai
Summary: This study investigates the characteristics and differences in performance inhibition and recovery of the anammox process under substrate inhibition and dissolved oxygen (DO) exposure. The results show that DO exposure has a higher effect on anammox activity compared to substrate inhibition. Additionally, the dominant anammox genus changes after DO exposure. Increasing the nitrogen loading rate by using a low-concentration influent and short HRT can effectively avoid substrate inhibition and enhance nitrogen removal performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Jing Chen, Jia Zeng, Yiran He, Shiquan Sun, Haipeng Wu, Yaoyu Zhou, Zhenguo Chen, Jianhui Wang, Hong Chen
Summary: This study investigates a combined process of simultaneous anammox and denitrification (SAD) with partial nitritation (PN) for wastewater treatment. The results demonstrate that under optimal conditions, this combined process can efficiently remove nitrogen from wastewater.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Sha Wu, Wenyu Zhao, Mengyue Liu, Fei Gao, Hong Chen
Summary: Microbial communities are important components of river ecosystems, involved in the transportation and transformation of pollutants, including nutrients. Understanding microbial community structures is crucial for understanding biochemical circulation in aquatic ecosystems. However, current research focuses more on bacterial diversity and less on eukaryotes, despite their key role in the nutrient cycle.
Article
Environmental Sciences
Hong Wang, Hong Chen, Yongdong Chen, Enzhe Yang, Long Chen, Qiuhong Chen, Donghai Yang, Xiaohu Dai
Summary: In this study, a novel dissolved oxygen-differentiated airlift internal circulation PNA (PNA-DOAIC) system was designed and operated to investigate the effects of organic matter on the PNA process. The results showed that an influent C/N ratio of 2.0 was optimal for efficient and stable operation. The PNA coupled with denitrification achieved high nitrogen removal efficiency, but as the influent C/N ratio increased, the activity and abundance of anammox bacteria declined, and heterotrophic bacteria became dominant. The nitrogen removal pathways shifted from PNA to the nitrification-denitrification process. This study provides important insights into the effects of organic matter on the PNA process and expands the application scope of PNA-DOAIC bioreactors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Enzhe Yang, Jing Chen, Ke Liu, Jianhong Jiang, Hong Wang, Sha Wu, Lixiu Shi, Jingyi Jiang, Eli Hendrik Sanjaya, Hong Chen
Summary: This study constructed a single-stage partial nitritation-anammox and denitrification system and operated it continuously for 364 days. The system showed efficient and stable operation, with an average total nitrogen removal efficiency of 87.2%. The nitrogen removal pathway in the system changed from autotrophic nitrogen removal to nitrification-denitrification. Overall, the system demonstrated the potential for efficient single-stage nitrogen removal.
Article
Engineering, Environmental
Jing Chen, Kun Chu, Shiquan Sun, Hong Chen, Binghao Song, Jianhui Wang, Zidan Liu, Lei Zhu
Summary: In this research, a novel magnetic Fe3O4-Mn3O4 composite was synthesized and found to have higher catalytic performance for the degradation of sulfadiazine. The composite exhibited outstanding stability and good reusability. The degradation mechanism was confirmed to be the redox reactions between Mn(II)/Mn(III)/Mn(IV), Fe(II)/Fe(III), and the synergistic effect of Mn(III)/Fe(II).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Hong Wang, Hong Chen, Long Chen, Yongdong Chen, Zixuan Liang, Enzhe Yang, Donghai Yang, Xiaohu Dai
Summary: This study investigated the effect of temperature reduction on the partial nitritation-anammox (PN/A) process. The results showed that temperature reduction influenced the expression of functional genes for anammox reaction and enhanced the biofilm formation and diversity of nitrogen removal pathways.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Zhen Luo, Xiaokang Su, Yiyi Deng, Zhengyu Deng, Shuanglin Yang, Xin Luo, Jing Chen, Lixiu Shi, Hong Chen
Summary: Non-point source pollution from rainwater runoff is a major problem in urban water management in cities undergoing urbanization and climate change. This study evaluated the pollution characteristics and first flush effect of runoff from asphalt roads and colored steel plate roofs in Changsha, China. The results showed that the peak concentrations of pollutants in the runoff occurred within the first 20 minutes and then decreased to relatively stable levels. The study highlights the importance of treating the initial portion of surface runoff to improve water quality before discharge or utilization.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Engineering, Environmental
Lixiu Shi, Yahui Shi, Yaqing Xu, Jiao Cao, Yao Meng, Hong Chen
Summary: This article reviews the properties and applications of metal ion-based MOF membranes in water and wastewater treatment. The article highlights the differences in application trends of different metal ion-based MOF membranes and pays specific attention to their treatment mechanism features. Additionally, the article provides potential research directions in this field to expand the practical application of MOF membranes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
