Article
Chemistry, Inorganic & Nuclear
Beibei Zhu, Jie Zhou, Lubin Ni, Guowang Diao
Summary: The Phosphorus-doped g-C3N4/ZnS composite photocatalyst was prepared by element doping and structuring a heterojunction, showing enhanced photocatalytic properties for degrading pharmaceutical wastewater with visible light irradiation. The design and synthesis of PCN/ZnS provide a new way for photodegrading pharmaceutical wastewater with improved photocatalytic performance.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
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
Materials Science, Multidisciplinary
Lu Yang, Yong Liu, Pengfei Tan, Ying Lu, Qingguo Ding, Jun Pan
Summary: An innovative g-C3N4-TiO2@CsPbBr3 composite catalyst was prepared and demonstrated to have enhanced photocatalytic performance for tetracycline hydrochloride degradation. The catalyst exhibited increased light-harvesting capability and more efficient charge carrier separation, leading to a degradation rate of 75.6% in 120 min, which was 2.30 and 2.03 times higher than TiO2@CPB and pure g-C3N4, respectively. The study also identified O-2(-) as the dominant active specie in the photocatalytic degradation process and proposed a possible photocatalytic mechanism.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Chemical
Jiadian Wang, Min Wang, Jin Kang, Yiwu Tang, Jiayun Liu, Siyan Li, Zhenqi Xu, Pengpeng Tang
Summary: In this study, a CN/FeWO4 Z-scheme hetero-junction photocatalyst was prepared to enhance the degradation of tetracycline (TC) under visible light irradiation. Peroxymonosulfate (PMS) was used to promote the photoinduced carriers separation. The results showed that the combination of photocatalysis and PMS system significantly enhanced TC removal. Reactive oxygen species (ROSs) were responsible for TC degradation. The as-fabricated CN/FeWO4 demonstrated satisfactory stability, reusability, and good ant-interference ability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Haohao Huo, Xin Li, Yuzhen Li, Runbin Duan, Siyuan Yi, Jianhui Shi, Zhaoxin Sun, Shuo Li, Lizhen Gao
Summary: A novel Ag2MoO4/SrWO4/g-C3N4 photocatalyst with dual electron transfer channels was constructed by one-step precipitation method to improve photocatalytic activity. The photocatalyst showed enhanced degradation efficiency of tetracycline under visible light compared to monomeric and binary materials. The characterization results revealed the formation of a heterostructure and heterojunctions among Ag2MoO4, SrWO4, and g-C3N4, which facilitated internal electron transfer and contributed to the improved photocatalytic performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Electrical & Electronic
Yan Cao, Sameer Alsharif, A. S. El-Shafay
Summary: This study aims to enhance the photocatalytic performance of g-C3N4 by constructing a p-n heterojunction with MoS2 semiconductor. The physicochemical properties and catalytic activity improvement were evaluated through various characterizations and tests. The g-C3N4/MoS2 nanocomposite showed higher degradation efficiency of dye contaminants under visible light due to its planar structure, improved visible spectrum absorption, high specific surface area, and p-n heterojunction construction.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Applied
Xiaolin Xue, Jian Zhang, Mei Li, Chenghong Ao, Qunhao Wang, Jiangqi Zhao, Wei Zhang, Canhui Lu
Summary: A unique three-dimensional nanofibrous foam of cellulose@g-C3N4@Cu2O was prepared through electrospinning and foaming processes. The foam showed enhanced specific surface area and porosity due to the hydrogen gas generated from NaBH4 transforming the two-dimensional membrane. The foam exhibited high degradation efficiency for Congo Red dye and maintained its stability and cycling performance after multiple reuse cycles.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jie Zhou, Beibei Zhu, Lu Wang, Yan Bao, Guofeng Guan
Summary: A novel Z-scheme CdS/CeO2/g-C3N4 nanocomposite was synthesized by a solvothermal method and its photocatalytic activity for the degradation of phenol was evaluated. The nanocomposite exhibited remarkable photocatalytic activity with a degradation rate of 95 % in 180 min, surpassing that of pure CeO2 and CdS/CeO2. The enhanced photocatalytic ability is mainly attributed to the higher adsorption capacity of three-dimensional porous g-C3N4 and the three-dimensional space electric field formed by its complex with CdS and CeO2.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Yuzhen Li, Zhaoxin Sun, Sufang Wang, Runbin Duan, Shaojie Wang, Shuo Li, Borong Lan, Lizhen Gao
Summary: In this study, a ternary heterojunction photocatalyst was successfully prepared and showed excellent performance in the degradation of tetracycline under visible light. It exhibited high stability and reusability, and a possible photodegradation mechanism was proposed based on the experimental results.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Yu-Chen Chou, Yu-Yun Lin, Chung-Shin Lu, Fu-Yu Liu, Jia-Hao Lin, Fu-Hsuan Chen, Chiing-Chang Chen, Wu-Tsan Wu
Summary: The systematic synthesis of bismuth oxychloride/bismuth oxybromide/graphitic carbon nitride (BiOxCly/BiOmBrn/g-C3N4) nano-composites using a controlled hydrothermal method showed promising photocatalytic activity for the degradation of crystal violet and 2-hydroxybenzoic acid under visible light irradiation. Various characterization techniques were employed to study the structure and performance of the composite material, and the scavenging effect analysis indicated the main role of reactive (OH)-O-center dot in the degradation process. The proposed photodegradation mechanism provides insights for potential applications in environmental pollution control.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Jialin Tang, Jiajia Wang, Lin Tang, Chengyang Feng, Xu Zhu, Yuyang Yi, Haopeng Feng, Jiangfang Yu, Xiaoya Ren
Summary: The floating porous g-C3N4 (FPCN) synthesized via a one-pot method shows excellent photocatalytic performance, outperforming traditional powder catalysts in terms of efficiency in removing tetracycline. The 3D interconnected network and enhanced light absorption of FPCN contribute to its superior performance, offering a promising solution to the recycling issue of powder catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yuzhen Li, Haohao Huo, Wenjun Chen, Houfen Li, Lizhen Gao, Siyuan Yi
Summary: A novel ternary composite photocatalyst with high degradation activity under visible light was prepared using a co-precipitation method. The composite exhibited better photocatalytic performance than individual components, offering a new solution for utilizing solar energy and treating tetracycline in wastewater.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
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
Chemistry, Physical
Keng Chen, Huazhang Guo, Jiye Zhang, Liang Wang, Minghong Wu
Summary: This work focuses on the development of a highly efficient photocatalyst for clean hydrogen production. The metal-free 2D/2D boron/g-C3N4 nanosheet heterojunction (B-CN) was designed and synthesized, which showed a hydrogen generation rate 35 times higher than g-C3N4. The tight heterojunction architecture allows for enhanced light absorption, increased carrier concentration, and efficient charge transfer, leading to improved photocatalytic activity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Mani Preeyanghaa, M. D. Dhileepan, Jagannathan Madhavan, Bernaurdshaw Neppolian
Summary: In this study, a novel g-CN/BiOBr/Fe(3)O(4) nanocomposite was prepared using a simplified method and evaluated for the photodegradation of model tetracycline antibiotics. The nanocomposite exhibited high degradation and mineralization efficiency under simulated light irradiation, thanks to its extended visible light harvesting ability and efficient charge separation. It also possesses magnetic retrievability and retains stable photocatalytic performance.
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)