Article
Chemistry, Multidisciplinary
Xue Bai, Finn Purcell-Milton, Yurii K. Gun'ko
Summary: Cu-Based quantum dots are being explored as a potential replacement for toxic Cd- or Pb-based QDs, with studies focusing on the impact of different reaction conditions on the resulting morphologies and optical properties. By carefully controlling the ZnS shell deposition, researchers have optimized the synthesis of CIZS/ZnS/ZnS QDs and produced highly fluorescent core/shell/shell heterostructured QDs with high PLQYs. Additionally, the successful creation of giant ZnS shell QDs opens up possibilities for further development in this area.
Article
Environmental Sciences
Yanet Pina-Perez, Enrique Samaniego-Benitez, Jhon Harrison Sierra-Uribe, Federico Gonzalez, Francisco Tzompantzi, Luis Lartundo-Rojas, Angeles Mantilla
Summary: Organic-inorganic hybrid materials are a class of novel materials that combine functional organic components and inorganic building blocks. This study demonstrates the importance of using ethylenediamine in sulfided materials for photocatalytic processes in H-2 production. The addition of ethylenediamine increases the photocatalytic efficiency up to eight times compared to the photocatalyst without the organic agent. Ethylenediamine plays a dual role by stabilizing the cubic phase of zinc sulfide and acting as a promoter for charge transfer on the surface of the ZnS/ZnO heterojunction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Can Ren, Die Hu, Yanyan Cui, Peixian Chen, Xiaoqian Xu, Jiaji Cheng, Tingchao He
Summary: Water-soluble Ag-doped InP/ZnS quantum dots with high photoluminescence quantum yield were synthesized and characterized. Their maximum two- and three-photon absorption cross sections were determined to be similar to 1.7 x 10(4) GM at 820 nm and similar to 1.7 x 10(-76) cm(6) s(2) photon(-2) at 1260 nm. Importantly, it was demonstrated for the first time that Ag-doped InP/ZnS QDs can be used for type-I photodynamic therapy and are more suitable for the hypoxic environment of tumors.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yuxiu Jia, Hui Liu, Peng Cai, Xinran Liu, Luolisha Wang, Ling Ding, Guiyun Xu, Wei Wang, Mingxia Jiao, Xiliang Luo
Summary: This study presents an aqueous synthesis approach for Cu-In-Se/ZnS quantum dots emitting in the near-infrared spectral range. The photoluminescence of the dots can be effectively controlled by adjusting the sulfur source, resulting in increased quantum yields by four times and red-shifted emission peaks from 809 nm to 830 nm.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jiajia Ning, Yuan Xiong, Stephen Kershaw, Andrey L. Rogach
Summary: The most efficient way to improve the stability and optical properties of nanocrystals is to grow shell around their cores. Different growth modes of the ZnS shell on ZnSe nanorods were observed depending on the crystal structure of the ZnSe core, leading to differences in photoluminescence quantum yield.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Catia L. Ucker, Suelen R. Almeida, Renato G. Cantoneiro, Lisiane O. Diehl, Sergio Cava, Mario L. Moreira, Elson Longo, Cristiane W. Raubach
Summary: In this study, a calcium titanate-zinc sulfide heterostructure was successfully assembled using a microwave-assisted solvothermal method. The heterostructure showed enhanced photocatalytic activity for the degradation of organic dyes, making it a promising candidate for water decontamination.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Shuang Zhou, Qiying Wang, Zhendong Xu, Shenke Xu, Peiyi Yang, Hao Deng, Bobo Li, Yifan Dong, Peigang Han, Yaorong Su
Summary: This paper presents a facile antisolvent solvothermal method for synthesizing MAPbBr(3) nanocrystals and utilizing them as efficient photocatalysts. The AS-MAPbBr(3) shows enhanced optical and catalytic properties, achieving superior performance in the photocatalytic degradation of methyl orange.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xuyang Lin, Zongwei Chen, Yaoyao Han, Chengming Nie, Pan Xia, Shan He, Juntao Li, Kaifeng Wu
Summary: In recent years, there has been a growing interest in developing heavy-metal-free colloidal quantum dots as sensitizers for photochemistry. In this study, blue-emitting ZnSe/ZnS core/shell quantum dots were reported as molecular triplet sensitizers for photon upconversion in the ultraviolet-B region.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Rong-Jin Huang, Zhi-Kai Qin, Li-Lei Shen, Guangqiang Lv, Furong Tao, Jingui Wang, Yu-Ji Gao
Summary: We demonstrate the integration of an S-x-In-P1-x buffer monolayer between InP core and thin ZnS shell through anion exchange. The in situ generated buffer layer minimizes lattice mismatch and enhances charge separation, resulting in exceptional photocatalytic activity and stability of InP/InPS/ZnS core/buffer/shell QDs.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Sabri Ouni, Naim Bel Haj Mohamed, Mohamed Bouzidi, Adrian Bonilla-Petriciolet, Mohamed Haouari
Summary: Sulfur zinc nanocrystals were prepared using an aqueous colloidal route with thioglycolic acid as a stabilizer, and showed efficient photodegradation of methylene blue and methyl orange dyes under sunlight irradiation. The nanocrystals exhibited structural and optical properties with a blue shift of absorbance band and high energy band gap values, indicating potential for low-cost nanocatalyst applications in wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yanet Pina-Perez, Enrique Samaniego-Benitez, Jhon Harrison Sierra-Uribe, Federico Gonzalez, Francisco Tzompantzi, Luis Lartundo-Rojas, Angeles Mantilla
Summary: This study demonstrates the synthesis and photocatalytic performance of ZnS-ZnO composites with different compositions of ZnS-c, ZnS-h, and ZnO phases for H2 production. The solvothermal method was used to partially sulfide ZnO at different temperatures (150°C, 200°C, and 250°C) using mono ethylene glycol and thiourea as solvent and sulfur source, respectively. The material characterization involved X-ray diffraction, electron microscopy, UV-visible spectroscopy, X-ray photoelectron microscopy, N2 adsorption-desorption isotherms, and photoelectrochemical techniques. The highest photoactive material was synthesized at 200°C, showing an H2 production rate of 580 µmol h-1 g-1, attributed to the optimized interfacial properties between ZnS-c/ZnS-h and ZnO in the coupled photocatalytic system.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Yanze Wei, Fenghua Zhang, Jingjing Wei, Zhijie Yang
Summary: This study presents a strategy to engineer MDHs between two low-dimensional materials using curvature-complementary self-assembly. The CdSe MDHs exhibit increased light absorption, efficient charge separation, and appropriate bandgap structure. Additionally, the MDHs alleviate the sluggish kinetics of electron transfer in the CdSe subunits and act as ideal photocatalysts for benzylamine oxidation.
Article
Energy & Fuels
Long Liu, Bing Bai, Jun Li, Yi Zhou, Hsien-Yi Hsu, Guohua Jia
Summary: This article provides an overview of the potential applications of heterostructure nanocrystals in various fields, including lighting devices, lasers, photocatalysis, and biological applications. By tuning the band alignment, the properties of these nanocrystals can be modified.
Article
Chemistry, Physical
E. Krishnan Vishnu, Anoop Ajaya Kumar Nair, K. George Thomas
Summary: The study investigates the photoluminescence fluctuations in CdSe QDs by varying core size and maintaining constant shell thickness. Increase in core size leads to enhanced detrapping rate and higher photoluminescence efficiency.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Xingda An, Joshua C. Kays, Ian Lightcap, Tianhong Ouyang, Allison M. Dennis, Bjorn M. Reinhard
Summary: The study integrates gold nanorods and chalcopyrite nanocrystals into water-stable nanocomposites for robust and bifunctional photocatalysis of oxygen and hydrogen evolution reactions. Excitation of gold nanorods or chalcopyrite nanocrystals correlates with increased hydrogen or oxygen evolution, with the direction of light-driven electron transfer depending on the wavelength.
Article
Chemistry, Multidisciplinary
Sandeep Singh Dhankhar, Rajesh Das, Bharat Ugale, Renjith S. Pillai, C. M. Nagaraja
Summary: The highly porous Cu(II)-MOF shows excellent adsorption capability and catalytic activity, efficiently converting CO2 into cyclic carbonates without the need for co-catalysts or solvents. This MOF is designed rationally, with recyclable catalytic activity, making it suitable for environmentally friendly CO2 conversion.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Physical
Devesh Chandra Binwal, K. Pramoda, Alla Zak, Manjodh Kaur, Pallellappa Chithaiah, C. N. R. Rao
Summary: Nanocomposites formed by MoS2 nanotubes with P-modified SWCNT and BCNNT through solution-phase flocculation show enhanced photocatalytic and electrocatalytic HER activities. The H2 yield improves with higher proportion of MoS2 nanotubes, with the MoS2-P.SWCNT (3:1) nanocomposite exhibiting the highest H2 evolution rate. Electrostatic stacking of 1D MoS2 nanotubes with SWCNT/BCNNT appears to be an effective strategy for HER and related catalytic reactions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Rajesh Das, Thirumavalavan Ezhil, C. M. Nagaraja
Summary: This work presents the rational design of a bifunctional 3D Zn-MOF with efficient CO2 adsorption and catalytic activity, demonstrating the potential for utilizing CO2 under environmentally friendly conditions.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Suman Dhingra, Manisha Sharma, Venkata Krishnan, C. M. Nagaraja
Summary: The study presents the rational construction of CoTiO3/xZn0.5Cd0.5S heterostructures with a Z-scheme design for efficient photocatalytic proton reduction and selective oxidation of biomass derivatives, demonstrating enhanced catalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Gulshan Singh, C. M. Nagaraja
Summary: This study demonstrates the successful fixation of CO2 from atmosphere into cyclic carbonates using a polar functionalized covalent-organic framework (COF-SO3H) as a metal-free heterogeneous catalyst. The COF-SO3H possesses high heat of adsorption for CO2 and catalyzes the cycloaddition of CO2 with epoxides under metal/solvent-free atmospheric pressure conditions, showing good recyclability.
JOURNAL OF CO2 UTILIZATION
(2021)
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
Rajesh Das, Surya Sekhar Manna, Biswarup Pathak, C. M. Nagaraja
Summary: This study reports a visible light-promoted catalyst based on a magnesium-centered porphyrin metal-organic framework, which effectively converts CO2 into valuable chemicals. The catalyst shows superior catalytic activity under visible light irradiation and can efficiently capture CO2.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Gulshan Singh, C. M. Nagaraja
Summary: This study presents a strategic integration of noble metal-free Cu(I) catalytic sites with a nitrogen-rich, CO2-philic covalent triazine framework for the capture and fixation of CO2 into valuable chemicals. The catalyst showed good performance, high recyclability, and chemical stability.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Applied
Anbu Nagaraj, Rajesh Das, C. M. Nagaraja
Summary: The utilization of carbon dioxide as C1 feedstock for synthesis of high-value chemicals is a promising approach for reducing atmospheric CO2 concentration. In this study, a UiO-MOF functionalized with bipyridine sites was used to anchor catalytically active noble metal-free copper (I) sites for the coupling of CO2 with propargylic alcohols. The Cu(I) anchored UiO-MOF showed excellent catalytic performance and could be recycled multiple times. This work demonstrates the efficient fixation of CO2 from dilute gas into fine chemicals using non-noble metal catalytic sites in functionalized frameworks.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Gulshan Singh, Kamal Prakash, C. M. Nagaraja
Summary: This research demonstrates the one-pot conversion of readily available olefins and CO2 into valuable cyclic carbonates using Fe(III)-centered porphyrin-based covalent organic framework (P-COF) as an efficient heterogeneous catalyst. The use of CO2 as a C1 source coupled with olefins offers the advantages of mitigating atmospheric carbon dioxide and green synthesis of valuable chemicals. Fe(III)@P-COF showed good recyclability and durability for multiple reuse cycles without losing its catalytic activity. This one-step synthesis strategy presents an eco-friendly, atom-economic alternative to the conventional two-step process requiring epoxides.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Rajesh Das, Rajesh Belgamwar, Surya Sekhar Manna, Biswarup Pathak, Vivek Polshettiwar, C. M. Nagaraja
Summary: This study demonstrates the visible light/sunlight-promoted catalytic reduction of CO2 and protons to syngas using a porphyrin-based 2D porous organic framework, POF(Co/Zn). The Co-based POF shows superior catalytic performance compared to the Zn counterpart, achieving high rates of CO and H2 generation. The theoretical investigation suggests that the excellent catalytic performance of Co-based POF is attributed to the favorable transfer of photo-excited electrons, which is not feasible in the case of Zn-based POF.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Physical
Kamal Prakash, Bikash Mishra, David Diaz Diaz, C. M. Nagaraja, Pradip Pachfule
Summary: Covalent organic frameworks (COFs) are crystalline materials that are gaining attention for their porosity and tunable properties. Designing COF-based photocatalysts for applications like energy production and environmental remediation is a major focus. This review discusses recent developments in the design of COF-based photocatalysts for solar fuel production via water splitting. It covers the use of different organic building blocks, structure-property correlations, bandgap engineering, and the challenges and future prospects of COF-based catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Rajesh Das, Sahil Kamra, C. M. Nagaraja
Summary: In this study, a one-step, halogen-free, cascade transformation of olefins and CO2 to cyclic carbonates using Fe-III-centered porphyrin-based bifunctional ionic porous organic polymers (Fe-IPOP1/2) is presented. The Fe-IPOP1/2 polymers exhibited selective and recyclable CO2 uptake and showed excellent catalytic performance in the synthesis of cyclic carbonates. The presence of highly exposed oxophilic Fe-III sites and nucleophilic Br- anions in the polymers contributed to their high catalytic activity.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Rituja B. Patil, Manjodh Kaur, Stephen D. House, Lance Kavalsky, Keda Hu, Shirley Zhong, Dilip Krishnamurthy, Venkatasubramanian Viswanathan, Judith Yang, Yushan Yan, Judith Lattimer, James R. Mckone
Summary: Coupling water electrolysis and fuel cell energy conversion is an attractive strategy for long-duration energy storage. This study reports the synthesis of Ni-Mo catalyst composites supported on oxidized Vulcan carbon and demonstrates their ability to catalyze reversible hydrogen evolution and oxidation.
Article
Chemistry, Inorganic & Nuclear
Rajesh Das, Vaibhav Parihar, C. M. Nagaraja
Summary: This study presents the design of a bifunctional catalyst that can efficiently convert dilute CO2 gas into valuable chemicals under mild conditions. By grafting catalytically active Ag(i) ions onto N-heterocyclic carbene (NHC) sites in a metal-organic framework (MOF), the Ag(i)@MOF-NHC catalyst demonstrated excellent catalytic activity for the fixation of CO2 with alkynes, resulting in the production of valuable oxazolidinones. The synergistic effect between the CO2-philic NHC and alkynophilic Ag(i) sites in the MOF channels contributes to the superior activity of the catalyst.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
