Article
Chemistry, Multidisciplinary
Feidias Bairamis, Ilaeira Rapti, Ioannis Konstantinou
Summary: In recent years, the interest in photocatalysis has grown rapidly due to its importance in environmental depollution and addressing the energy crisis. Graphitic carbon nitride (g-C3N4) photocatalyst has gained attention for its properties and ease of preparation, although efforts are needed to improve charge carrier separation efficiency. Z-scheme-based heterostructures have emerged as a promising approach for separating charge carriers and enhancing oxidation and reduction capability. This review focuses on the development and application of Z-scheme-based g-C3N4 composite materials in the past three years, particularly their photocatalytic efficiency for addressing emerging pollutants.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Engineering, Environmental
Xin Ji, Xiaoran Liu, Yong Guo, Jiankun Zhang
Summary: A series of BN/PDI materials were synthesized and investigated for their adsorption and photodegradation efficiency for TC under visible light, with BNPDI-2-350 showing the highest performance. The composite exhibited good cyclic degradation efficiency and followed the Z-scheme heterojunction mechanism for TC photodegradation. BNPDI-2-350 showed higher photodegradation efficiency compared to TiO2 (P25) and g-C3N4, showing potential for application in sewage treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Akash Balakrishnan, Mahendra Chinthala, Rajesh Kumar Polagani, Dai-Viet N. Vo
Summary: Tetracycline is one of the most widely used antibiotics in human therapy, veterinary applications, and agricultural activities. Its consumption is expected to increase by over 30% by 2030. This review focuses on the recent advancements in photocatalytic degradation of tetracycline using graphitic carbon nitride-based photocatalysts, which offer higher visible light activity, low cost, and non-toxicity. The properties, worldwide consumption, occurrence, and environmental impacts of tetracycline are comprehensively discussed. The occurrence of tetracycline in various water matrices has been confirmed, with a maximum concentration of 54 μg/L. Among different graphitic carbon nitride-based materials, heterojunctions have shown the highest photocatalytic degradation efficiency of 100% with reusability for up to 5 cycles. Photocatalytic membranes are found to be feasible due to ease of recovery and better reusability. The limitations and efficient solutions for graphitic carbon nitride-based wastewater treatment technology are also emphasized in detail.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Physical
Javier Fernandez-Catala, Rossella Greco, Miriam Navlani-Garcia, Wei Cao, Angel Berenguer-Murcia, Diego Cazorla-Amoros
Summary: Photocatalysis is a promising technology for addressing the environmental crisis. One of the most representative photocatalysts is graphitic carbon nitride (g-C3N4), known for its stability, cost-effectiveness, facile synthesis procedure, and absorption properties in visible light. However, the original g-C3N4 still demonstrates low photoactivity due to quick recombination of photo-induced electron-hole pairs. To overcome this limitation, Z-scheme photocatalysts based on g-C3N4 are considered superior alternatives, as they have the same band configuration but a different charge carrier recombination mechanism.
Article
Environmental Sciences
Sethumathavan Vadivel, Manabu Fujii, Saravanan Rajendran
Summary: A novel lamellar structured FeOCl/g-C3N5 nanocomposite has been prepared as a Z-scheme photocatalyst. The nanocomposite exhibited excellent visible light degradation performance towards the antibiotic pollutant T-C. The mechanism of photodegradation was proposed, highlighting the role of hydroxyl and superoxide radicals. This study presents a sustainable and efficient method for environmental remediation.
Article
Materials Science, Multidisciplinary
Qing Wang, Shoushuang Huang, Xiaofeng Cui, Qian Zhang, Jie Zhang, Zhiwen Chen
Summary: A magnetically separable NiFe2O4/MoS2 nanocomposite was synthesized by in-situ growth of NiFe2O4 nanoparticles on ultrathin MoS2 nanosheets via a mild hydrothermal method. The nanocomposite exhibited excellent photocatalytic activity for the degradation of rhodamine, thanks to enhanced light absorption and efficient separation of photo-generated electrons and holes. The photocatalytic activity was greatly influenced by the mass ratio of MoS2 and NiFe2O4. Moreover, the nanocomposite could be easily separated under an external magnetic field and maintained good photocatalytic activity after multiple cycles.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Engineering, Environmental
Yuchan Li, Bin Yu, Zhenqi Hu, Hong Wang
Summary: This study successfully synthesized a highly efficient SnS2@ZnIn2S4@kaolinite (SZK) photocatalyst, which showed significant degradation capability towards tetracycline hydrochloride (TCH). The SZK heterostructure demonstrated enhanced photocatalytic efficiency and degradation rate under visible light illumination, with O-2(-) and O-1(2) identified as the main active species. The superior performance of SZK is attributed to the synergistic effect of its components, providing new insights for visible light photocatalytic degradation of antibiotics in wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jin Chen, Jie Yan, Xiaofeng Yang, Tai Yang, Yuzhao Ma, Yanjun Li, Meidan Que
Summary: The construction of heterojunction photocatalysts is an effective strategy to address antibiotic pollution. In this study, a dual Z-scheme heterojunction BiOBr/Bi2O2.33/g-C3N4 was synthesized and exhibited exceptional visible light photocatalytic performance. The well-designed heterojunction broadened the visible light absorption region and enhanced the migration and separation of photogenerated electron-hole pairs, resulting in high degradation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Binhua Zhou, Pengfei Tan, Lu Yang, Yi Zhang, Xiyu Tan, Jun Pan
Summary: A novel spindle-shaped BiVO4 was prepared to construct direct ZnIn2S4/BiVO(4 )Z-scheme heterojunction photocatalysts for improved degradation of organic pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Binhua Zhou, Pengfei Tan, Lu Yang, Yi Zhang, Xiyu Tan, Jun Pan
Summary: In this study, a novel spindle-shaped BiVO4 was prepared to construct ZnIn2S4/BiVO4 Z-scheme heterojunction photocatalysts. The optimal sample showed a degradation rate of 93.3% after 2 hours of light exposure, attributed to the increased charge carrier separation and migration efficiency provided by the unique Z-scheme structure. The main active species in the photocatalytic degradation process were identified as h(+) and center dot O-2(-).
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Fang-Di Wu, Jyh-Cherng Chen, Jia-Peng Hu
Summary: A ternary composite photocatalyst TiO2/Ti3C2Tx/AgI with high catalytic activity was successfully synthesized using simple solvothermal and coprecipitation methods. This composite catalyst exhibited superior photocatalytic degradation activity for tetracycline hydrochloride (TCH) under simulated sunlight. The enhancement of photocatalytic activity can be attributed to the high conductivity and efficient transfer of photogenerated carriers facilitated by Ti3C2Tx and the Z-scheme heterojunction formed with non-metal Ti3C2Tx as the solid medium. Superoxide radicals, singlet oxygen, and holes were identified as the main active substances in the photocatalytic degradation process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Min Zhang, Yunyuan Dong, Hongfei Yin, Xiaobin Chen
Summary: CdS/CdSnO3 direct Z-scheme heterojunctions were fabricated through soft-chemistry routes, exhibiting improved photocatalytic performance due to enhanced light absorption and unique charge transfer path. The possible direct Z-scheme photocatalytic mechanism was proposed based on systematic analysis.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Environmental
Chong Ouyang, Xinyao Quan, Chunlei Zhang, Yexin Pan, Xiaoyu Li, Zhanglian Hong, Mingjia Zhi
Summary: This study successfully designed and synthesized a direct Z-scheme photocatalyst for efficient degradation of antibiotic contamination. Through the internal Z-scheme charge transfer mechanism, the catalytic activity of the photocatalyst was improved, while possible degradation routes were proposed.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xiaoqing Wang, Jing Zhang, Rui Wang, Yujie Ren, Shiyao Jin, Shimin Wang, Hongjing Lu, Yongjiang Wang, Junzi Zhao, Chunhua Xiong
Summary: We propose a strategy to modify an ion-exchange resin (D113) as a low-cost carbon source to achieve a macrospherical photocatalyst precursor, which can be converted into a stable all-solid-state Z-scheme heterojunction catalyst (Bi2O3-Co3O4@C). The as-prepared material has highly graphitized carbon and costs only a fraction of commercial carbon nanotubes and graphene oxide. The Bi2O3-Co3O4@C exhibits enhanced light absorption, weakened electron-hole recombination, and improved photocurrent response with the aid of the organic carbon source. Under simulated solar irradiation, it demonstrates high degradation efficiencies for various pollutants. The study also provides insights into the band structure and photocatalytic mechanism of Bi2O3-Co3O4@C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Materials Science, Multidisciplinary
Nisha Kumari, Neha Sood, Venkata Krishnan
Summary: In this work, biomimetic SERS substrates with unique surface morphology were fabricated using soft lithography technique. The aggregation of nanoparticles and enhanced interaction with analyte molecules were achieved by utilizing nanogaps and micro-bowls on the replicated artificial wings surface. The nano-junction between gold thin film and gold nanoparticles increased the SERS activity of these substrates. The remarkable performance of these substrates was demonstrated for sensitive detection of an organic dye and a fungicide.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Suman Dhingra, Manisha Sharma, Venkata Krishnan, C. M. Nagaraja
Summary: This work presents the development of noble metal-free NiTiO3/ZnIn2S4 heterojunction photocatalysts for efficient hydrogen production from water and in situ reduction of biomass derivative, 5-hydroxymethylfurfural (HMF), to value-added 2,5-Bis(hydroxymethyl)furan (BHMF). The optimized heterojunction, S3, showed the best photocatalytic activity with a high H2 generation rate and was coupled with the in situ reduction of HMF to achieve high yield and selectivity in BHMF production. The Z-scheme heterojunction between NiTiO3 and ZnIn2S4 played a crucial role in the enhanced photocatalytic activity. This work provides a greener pathway for solar energy harvesting and conversion to chemical energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Manisha Sharma, Ashish Kumar, Venkata Krishnan
Summary: This study compared the photocatalytic activities of two oxygen vacancy-rich materials for the degradation of a model pharmaceutical pollutant under visible light irradiation. The results showed that the oxygen vacancy-treated materials exhibited higher photocatalytic activity due to suppressed charge carrier recombination and increased surface active sites. Additionally, scavenger studies were conducted to explain the role of photoinduced charge carriers in the degradation mechanism. Furthermore, the oxygen vacancy-rich photocatalysts remained stable even after three consecutive cycles, making them promising materials for practical applications.
Article
Engineering, Chemical
Ajay Kumar, Manisha Sharma, Priyanka Choudhary, Venkata Krishnan
Summary: This study presents a novel ternary plasmonic photocatalyst consisting of upconversion, plasmonic, and semiconducting materials. The ternary nanocomposites are capable of harnessing ultraviolet, visible, and near-infrared light, and show improved photocatalytic activity for the elimination of tetracycline under these light irradiations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Devendra Sharma, Priyanka Choudhary, Sahil Kumar, Venkata Krishnan
Summary: Transition metal phosphides (TMP) possess unique properties that can be used for various catalytic applications. However, the application of TMP in organic catalysis is still facing complex challenges. Therefore, the controlled synthesis of TMP-based catalysts and investigation of reaction mechanisms are important for achieving desired applications. This review provides a comprehensive analysis of recent advancements in synthetic strategies for tailoring the properties of TMP and summarizes their catalytic potential in organic transformation reactions.
Article
Nanoscience & Nanotechnology
Priyanka Choudhary, Kamlesh Kumari, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: A metal-free methodology using boron nitride (BN) nano-sheets functionalized with hydroxyl groups (BN-OH) has been developed for the synthesis of phenols from arylboronic acids. The hydroxyl groups on the BN nanosheets serve as active sites for the hydroxylation reaction. The optimized reaction parameters and the use of water as solvent contribute to high catalytic efficiency and eliminate the need for toxic solvents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Tripti Chhabra, Venkata Krishnan
Summary: This study reports the development of sulfonic acid functionalized niobium pentoxide (Nb2O5) for the synthesis of high dense carbon biofuel precursors from low dense biomass derivatives. The catalysts used are a combination of Lewis acid catalyst, niobium pentoxide, and sulfonic acid functionalized catalyst (S-Nb2O5). The most effective catalyst, S3-Nb2O5, shows a maximum yield of 87% for C-15 product at relatively low temperature (50 degrees C) under neat conditions.
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: We demonstrate a facile fabrication of Ce doped ZnO nanowires with outstanding photodegradation performance by thermal decomposition route. The impact of cerium doping on structure, optical and photodegradation behavior of ZnO nanowires was investigated. The results showed that ZnO nanowires doped with 0.5% Ce exhibited excellent photodecolorization performance and high efficiency in dye removal under sunlight exposure.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Priyanka Choudhary, Shivangi Singh Chauhan, Devendra Sharma, Sahil Kumar, Venkata Krishnan
Summary: This work reports a sustainable method for the synthesis of aromatic nitriles using metal-free heterogenous catalysts. A sulfonated boron nitride (S-BN) catalyst was used to achieve high yields of nitriles from aromatic alcohols and aqueous ammonia under mild conditions. The catalyst was prepared by exfoliation and sulfonation of low cost hexagonal boron nitride, resulting in the generation of active centers. The reaction showed excellent yields and high green metric parameters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sameer Mohanty, Manisha Sharma, Ajay Kumar, Venkata Krishnan
Summary: Sunlight, as the most abundant and cleanest form of energy, has great potential in photocatalysis. In this study, multi-component interfacial heterostructures were developed and utilized for photocatalytic reactions under natural sunlight, demonstrating remarkable performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Tripti Chhabra, Balendu Bisht, Sahil Kumar, Venkata Krishnan
Summary: The catalyst conversion of lignocellulose derived products to value added chemicals is important in solving energy crisis. In this study, a phosphomolybdic acid (PMA) supported on boron-nitride (BN) nanosheets catalyst was prepared and optimized for the conversion of fructose to 5-hydroxymethylfurfural (5-HMF). It was found that the addition of sulfuric acid (H2SO4) enhanced the catalytic activity and formation of levulinic acid (LA), in addition to 5-HMF.
Article
Chemistry, Multidisciplinary
Ashish Kumar, Manisha Sharma, Sajjan Sheoran, Shilpi Jaiswal, Abhijit Patra, Saswata Bhattacharya, Venkata Krishnan
Summary: This study successfully synthesized nitrogen-doped SrTiO3 nanocubes with a one-step solvothermal method, and achieved reliable photocatalytic NH3 generation by eliminating surface nitrogenous impurities through a rigorous cleaning procedure. The contribution of surface impurities to NH3 formation was deduced, and it was found that defect-containing SrTiO3 materials exhibited the highest NH3 formation activity under natural sunlight in pure water, attributed to the tuned defect sites, enhanced surface area, and efficient charge separation. Therefore, this study provides a simple and affordable method for the synthesis of nitrogen-doped catalysts and expands the application of perovskite oxide materials for the fabrication of efficient photocatalysts for sustainable NH3 production.
Review
Chemistry, Multidisciplinary
Ajay Kumar, Priyanka Choudhary, Tripti Chhabra, Harpreet Kaur, Ashish Kumar, Mohammad Qamar, Venkata Krishnan
Summary: The rational design and development of highly efficient and stable photocatalysts is a major focus in the field of photocatalysis. This review article provides a critical comprehensive overview of the development of plasmon mediated GCN based photocatalysts and summarizes the recent progress in the field of energy conversion, environmental remediation, and organic transformations. It also discusses the challenges associated with stability, low light absorption, and fast recombination of charge carriers, and introduces the use of GCN coupled with plasmonic materials to enhance photocatalytic activity.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Manisha Sharma, Ashish Kumar, Deepika Gill, Shilpi Jaiswal, Abhijit Patra, Saswata Bhattacharya, Venkata Krishnan
Summary: In this study, W-doped Bi2MoO6 nanosheets were synthesized and demonstrated their potential as efficient photocatalysts for the simultaneous production of NH3 and NO3- ions under visible light irradiation. The optimal molar ratio of doped tungsten showed the best photocatalytic NH3 production without using any sacrificial agents. The enhanced photocatalytic activity of the synthesized photocatalysts could be attributed to oxygen vacancy defects caused by Mo substitution by a more electronegative W atom.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Hushan Chand, Ajay Kumar, Subhadip Goswami, Venkata Krishnan
Summary: This study investigates the catalytic activity of graphitic carbon nitride (GCN) derived from different precursors in the CO2 conversion reaction. The results show that GCN derived from urea demonstrates the best catalytic activity and product yield. Exfoliated GCN samples exhibit a moderate decrease in catalytic activity, possibly due to a decrease in terminal amino groups.
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
