Article
Chemistry, Inorganic & Nuclear
Xiaoying He, Min Zhang, Ziqi Jin, Jing Zheng, Jingli Xu, Xue-Bo Yin
Summary: This study presents a simple method for preparing one-dimensional carbon-based tubular composites incorporated with bimetallic active CoNi alloy nanoparticles. The resulting composite exhibits excellent catalytic activity and good stability.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Simon C. Boehme, Maryna I. Bodnarchuk, Max Burian, Federica Bertolotti, Ihor Cherniukh, Caterina Bernasconi, Chenglian Zhu, Rolf Erni, Heinz Amenitsch, Denys Naumenko, Hordii Andrusiv, Nazar Semkiv, Rohit Abraham John, Alan Baldwin, Krzysztof Galkowski, Norberto Masciocchi, Samuel D. Stranks, Gabriele Raino, Antonietta Guagliardi, Maksym V. Kovalenko
Summary: The success of colloidal semiconductor quantum dots (QDs) is due to the precise control of QD size, shape, and composition, which has enabled the development of well-defined functional nanomaterials. Although the strong confinement regime has been extensively explored for InP or CdSe QDs, it has not been thoroughly investigated for lead-halide perovskite QDs. This is mainly due to the limited chemical stability and size monodispersity of perovskite QDs smaller than 7 nm.
Article
Chemistry, Multidisciplinary
Chang Zhou, Datao Tu, Siyuan Han, Peng Zhang, Luping Wang, Shaohua Yu, Jin Xu, Renfu Li, Xueyuan Chen
Summary: The article introduces a new class of UC nanocrystals based on Cs2NaYF6:Yb/Tm nanoplatelets, which exhibit efficient multiphoton UC emissions without the need for complicated core/multishell structures. The study demonstrates that Cs2NaYF6 has a unique structure that facilitates energy migration of Ln(3+) dopants, resulting in intense red and green UC emissions.
Article
Chemistry, Multidisciplinary
Hua Zhang, Fei Wan, Xiaogang Li, Xiaohui Chen, Shenglin Xiong, Baojuan Xi
Summary: This study reports a method of synthesizing ultrafine bimetal PtMo nanocrystals through an anchoring-sites engineering strategy, in which N-rich carbon can provide abundant anchoring sites and suppress over-aggregation. The PtMo-NC catalyst exhibits superior HER performance in both alkaline and acidic conditions, delivering smaller overpotentials (80 mV and 63 mV) at a current density of 100 mA cm(-2). The introduction of Mo atoms into Pt can reduce the energy barrier of water molecule dissociation and optimize the absorption strength of H intermediates on Pt sites, thereby boosting the catalytic HER performance. This study offers a universal strategy for designing ultrafine nanocatalysts for high-efficiency electrocatalysis.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biophysics
Jinliu Wei, Liming Chen, Xiaoyan Cai, Wenqiang Lai, Xi Chen, Zhixiong Cai
Summary: In this study, a self-enhanced superstructure was constructed to improve the stability and charge transfer efficiency of lead halide perovskites. A new ECL sensor with high affinity for OTA detection was developed.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Yongqiang Ji, Minqiang Wang, Zhi Yang, Hao Wang, Muhammad Amin Padhiar, Hengwei Qiu, Jialin Dang, Yinru Miao, Yun Zhou, Arshad Saleem Bhatti
Summary: This study proposes a novel strategy to enhance the photoluminescence quantum yields of lead halide perovskite quantum dots. By substituting strontium and passivating chlorine defects, CsPbCl3 PQDs exhibit stronger emission intensity and improved stability.
Article
Chemistry, Physical
Yujiao Zhou, Gilles Ledoux, Laurence Bois, Sylvie Descartes, Nathalie Bouscharain, Fernand Chassagneux, Matteo Martini, Yamaldi Midiladji Bakary, Catherine Journet, David Philippon
Summary: Non-contact temperature measurement at the nanoscale by photoluminescence using a nano-sensor in a confined fluid has been achieved in this study. Upconversion lanthanide-doped nanoparticles were utilized as a self-referenced nanosensor for ratiometric thermometry. The synthesized Gadolinium orthovanadate (GdVO4) nanoparticles doped with Yb3+ and Er3+ were dispersed in an ester-based fluid. The results showed that the dispersed NP suspension allowed luminescence intensity ratio (LIR) thermometry up to 473 K with a relative sensitivity of 1.17% K-1 using a NIR laser.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Dongke Li, Jiaming Chen, Zhaoguo Xue, Teng Sun, Junnan Han, Wanghua Chen, Etienne Talbot, Remi Demoulin, Wei Li, Jun Xu, Kunji Chen
Summary: Understanding the distribution and behavior of dopants in silicon nanocrystals is crucial for achieving controllable doping at the nanoscale and developing next-generation optoelectronic devices. This study investigates the atomic-scale distributions of phosphorus and boron dopants in silicon nanocrystal multilayers. The results show that phosphorus dopants mainly concentrate on the surfaces of silicon nanocrystals to passivate dangling bonds and provide free electrons, while boron dopants exhibit a different distribution pattern, forming a dopant-shell covering on the surfaces of silicon nanocrystals and leading to damage in the crystalline lattice.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Chunmei Lv, Kai Huang, Yu Fan, Jing Xu, Cheng Lian, Hongliang Jiang, Yongzheng Zhang, Cheng Ma, Wenming Qiao, Jitong Wang, Licheng Ling
Summary: By rationally designing porous structures and confining Ni-N4 active sites in the interconnected pore structure, nitrogen-doped porous carbon nanospheres decorated by single Ni atom (Ni-NCN) show excellent activity and high selectivity for CO2 reduction to CO.
Article
Chemistry, Multidisciplinary
Zhensui Lu, Hui Yang, Gaocan Qi, Qian Liu, Ligang Feng, Hao Zhang, Jun Luo, Xijun Liu
Summary: A facile strategy to fabricate 3 nm RuIrOx nanocrystals anchored onto N-doped hollow carbon is developed for highly efficient and pH-universal overall water splitting and alkaline seawater electrolysis. The designed catalyst exhibits lower overpotential and superior stability compared to most previously reported Ru- and Ir-based electrocatalysts. It also shows excellent overall water splitting activities and maintains high Faradic efficiency in acid, alkaline, and alkaline seawater electrolytes.
Article
Chemistry, Multidisciplinary
Kaliyamoorthy Justice Babu, Ayushi Shukla, Gurpreet Kaur, Arshdeep Kaur, Himanshu Bhatt, Hirendra N. Ghosh
Summary: A temperature dependent transient absorption study reveals that at low temperature, charge transfer is suppressed by trapping of charge carriers in defect states, while at high temperature, thermally active carriers de-trap from defect states, leading to an efficient charge/energy transfer process.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Wenxing Yang, Yawei Liu, Tomas Edvinsson, Ashleigh Castner, Shihuai Wang, Sheng He, Sascha Ott, Leif Hammarstrom, Tianquan Lian
Summary: The interaction between surface adsorbate vibration and intraband electron absorption in nanocrystals affects the photophysical properties of both nanocrystals and surface adsorbates, impacting the performance of hybrid photocatalysts composed of semiconductor nanocrystals and molecular catalysts. The observation of Fano resonances between the intraband transition of photogenerated electrons in CdS and CdSe nanocrystals and CO stretching vibrational modes of adsorbed molecular catalysts provides new insights into fundamental interactions in these hybrid assemblies for artificial photosynthesis.
Article
Chemistry, Physical
Minh N. Tran, Iver J. Cleveland, Gregory A. Pustorino, Eray S. Aydil
Summary: Bismuth-based halide perovskites are non-toxic alternatives to lead-containing ones for optoelectronics. Cesium bismuth bromide shows good optical properties, with peak wavelengths at 433 and 472 nm. The high quantum yield photoluminescence is likely due to unreacted precursors and impurities, rather than Cs3Bi2Br9 quantum dots.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Liwei Dai, Christian Strelow, Tobias Kipp, Alf Mews, Iris Benkenstein, Dirk Eifler, Thanh Huyen Vuong, Jabor Rabeah, James McGettrick, Rostyslav Lesyuk, Christian Klinke
Summary: This study presents the successful direct doping of Mn2+ ions into ZnS nanoplatelets using a nucleation-doping strategy, resulting in Mn luminescence in ZnS:Mn NPLs. Energy transfer from ZnS NPLs to Mn2+ ions was observed, and the impact of Mn concentration on optical properties was systematically investigated. Tunable Mn emission and enhanced PL quantum yield in ZnS:Mn NPLs were achieved by passivating surface trap states. The synthetic strategy introduced here opens up new possibilities for further doped systems of two-dimensional NPLs.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Dallas P. Strandell, Patanjali Kambhampati
Summary: We performed time-resolved photoluminescence (t-PL) measurements on CsPbBr3 perovskite nanocrystals with a time resolution of 3 ps. Surprisingly, even though these nanocrystals are weakly confined or bulk-like, emissions from multiexcitons were observed with binding energies consistent with strongly confined quantum dots. Both biexciton and triexciton emissions were observed, and the kinetics of the multiexciton populations were analyzed in spectrally integrated form as well as decomposed into exciton, biexciton, and triexciton populations.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Siju Mishra, P. Supraja, P. Ravi Sankar, R. Rakesh Kumar, K. Prakash, D. Haranath
Summary: Two-dimensional nanosheets of zinc sulfide were successfully fabricated for the first time on flexible aluminum foil substrate using hydrothermal technique. These nanosheets were used to create a piezoelectric device capable of generating electric potential from biomechanical energy. Experiments confirmed the high efficiency and voltage output potential of the ZnS-based nanogenerator.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
M. Rakshita, Anjaly Babu, K. Jayanthi, Sivaiah Bathula, K. Uday Kumar, D. Haranath
Summary: This study investigated the combination of aluminum hydroxide nanoflakes and commercial white cement, which exhibited both oleophobicity and hydrophilicity. The resulting material showed excellent performance in repelling high viscosity oils and separating oil from emulsions.
Article
Engineering, Chemical
Naina Lohia, Shailesh Narain Sharma, D. Haranath
Summary: In this study, CdSe nanoparticles of varied shapes were synthesized using solution-based one-pot hot injection colloidal method. The impact of different precursor sources on the optical properties of CdSe nanoparticles was investigated, revealing their potential application in UV-LEDs.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Naresh Degda, Nimesh Patel, Vishwnath Verma, Mangalampalli Srinivas, Kota Venkata Ramana Murthy, Divi Haranath
Summary: A luminescent double perovskite phosphor Sr2YNbO6 doped with Eu3+ was successfully synthesized via a high-temperature combustion method and exhibited a monoclinic phase. The crystal structure, phase purity, and surface morphology were analyzed using X-ray diffraction and scanning electron microscopy. The functional groups in the phosphor were studied using Fourier transform infrared spectra analysis. The luminescence properties of the phosphor, including photoluminescence and thermoluminescence, were investigated and the dominant emission was attributed to the hypersensitive D-5(0)-F-7(2) electric dipole transition of Eu3+.
Article
Chemistry, Multidisciplinary
N. Anitha, K. Jayanthi, M. Rakshita, Aachal A. Sharma, N. Jayarambabu, A. Akshaykranth, Kishore Babu, T. Venkatappa Rao, D. Dinakar, D. Haranath
Summary: This study investigates the photoluminescent properties of Sm3+-doped SrB6O10 phosphors, finding that their crystallinity, phase, and dopant concentration significantly influence their properties. A controlled and modified soluble-salt reaction method was used to achieve high brightness orange-red emission at a lower temperature than usual. The optimized phosphor exhibits noticeable reddish-orange color coordinates and is a viable material for red components in white-light emitting diodes.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Ceramics
M. Rakshita, Aachal A. Sharma, Payal P. Pradhan, K. A. K. Durga Prasad, K. Jayanthi, D. Haranath
Summary: A self-activated Zn3V2O8 phosphor-based white light emitting device (WLED) with desired CCT and CRI values was successfully fabricated. The Zn3V2O8 phosphor showed high visible yellow emission and significant quantum efficiency. Combining with blue LED resulted in high-quality white light emission. This work demonstrates the potential of Zn3V2O8 as a candidate for high-quality phosphor-converted WLEDs.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Aachal A. Sharma, M. Rakshita, Payal P. Pradhan, K. A. K. Durga Prasad, Siju Mishra, K. Jayanthi, D. Haranath
Summary: Ultraviolet (UV) light is crucial for effective treatment of various skin conditions. Commercial UV lamps emitting broad spectrum are commonly used but can cause side effects. To address this issue, specific narrow wavelength range UV emitting Ca2MgSi2O7:Gd3+ phosphors were developed, showing promising results in dermatology. The optimized Ca2-xMgSi2O7:xGd(3+) phosphor had comparable intensity to commercial LaPO4:Ce3+ phosphor (UVB-315), making it a potential option for treating psoriasis with fewer lesions and minimal risk of erythema.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Nitesh Bhalla, Nitin Ingle, Athira Jayaprakash, Hiral Patel, Srilakshmi Patri, D. Haranath
Summary: This article explores the use of green synthesis to fabricate potent zinc oxide nanoparticles. The study found that green synthesized ZnO nanoparticles (GsZnO-Nps) have high antioxidant efficacy, robust anti-acne efficacy, and advanced antibacterial efficacy. The unique properties of GsZnO-Nps make them suitable for various industrial applications.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Siju Mishra, Muddamalla Rakshita, Haranath Divi, Supraja Potu, Rakesh Kumar Rajaboina
Summary: This study introduces a surface modification technique using a laser printer to increase the effective contact area of a triboelectric nanogenerator (TENG) and improve its performance. By modifying the hydrothermal method, zinc sulfide (ZnS) nanostructures are directly introduced on an aluminum electrode as a positive layer, and different line patterns are printed on transparent sheets as a negative layer. This leads to significant improvements in the output voltage and current density of the TENG, as well as an ultrahigh instantaneous power density and energy conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Aachal A. Sharma, M. Rakshita, Payal P. Pradhan, K. A. K. Durga Prasad, Siju Mishra, K. Jayanthi, D. Haranath
Summary: Psoriasis is a noncontagious, long-lasting skin infection that affects many people globally. Various artificial treatments, such as photodynamic therapy using UV lamps, have harmful effects on the skin. However, a synthesized phosphor called Gd3+-doped calcium magnesium silicate shows promise in treating psoriasis without damaging the skin. This phosphor emits narrowband UV-B light at a specific wavelength, making it suitable for treating various diseases, including psoriasis and other skin conditions.
Article
Materials Science, Multidisciplinary
K. Ruthvik, Anjaly Babu, P. Supraja, M. Navaneeth, V. Mahesh, K. Uday Kumar, R. Rakesh Kumar, B. Manmada Rao, D. Haranath, K. Prakash
Summary: In this study, a TENG device using a 2D graphitic carbon nitride (g-C3N4)/silicone hybrid film was fabricated and its performance was reported. The g-C3N4 was synthesized through a low-cost one-step pyrolysis process using urea as the precursor. The TENG device exhibited a high output voltage of -550 V, current of -110 μA, and a power density of about 4.19 W/m2 when paired g-C3N4/silicone with Kapton. Overall, the TENG device showed a multi-fold increment in power density compared to previous g-C3N4-based TENGs.
Article
Chemistry, Multidisciplinary
M. Navaneeth, Supraja Potu, Anjaly Babu, B. Lakshakoti, Rakesh Kumar Rajaboina, K. Uday Kumar, Haranath Divi, Prakash Kodali, K. Balaji
Summary: This paper discusses the environmental problems caused by medical plastic waste in healthcare facilities and proposes a solution to reutilize the waste through triboelectric nanogenerator (TENG) device technology. The study demonstrates the potential of medical waste saline bottles to create energy-harvesting, health-monitoring devices, and tactile, humidity-sensing applications. By utilizing TENG technology, medical waste can be transformed into sustainable energy and innovative applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Reddivari Muniramaiah, Gouranga Maharana, Jean Maria Fernandes, M. Manivel Raja, Dilli Babu Padmanaban, P. Supraja, M. Rakshita, Nandarapu Purushotham Reddy, M. Kovendhan, Gangalakurti Laxminarayana, R. Rakesh Kumar, D. Haranath, D. Paul Joseph
Summary: The commonly used Indium tin oxide (ITO) electrode is facing challenges due to its low availability, supply issues, and recycling problems. In order to find alternatives, a transparent conducting ultrathin Au/Cu/Ag/Pt/Au noble metallic multi-layer electrode sputtered onto PET substrate was investigated. The multi-layer showed high transmittance and electrical transport properties, as well as good mechanical strength and surface characteristics. It also demonstrated significant performance in piezoelectric nanogenerator and electroluminescent devices.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
M. Navaneeth, Supraja Potu, Anjaly Babu, Rakesh Kumar Rajaboina, K. Uday Kumar, Haranath Divi, Prakash Kodali, K. Balaji
Summary: This study demonstrates the use of medical plastic waste, specifically X-ray films, to fabricate a triboelectric nanogenerator (TENG) for energy harvesting. The TENG showed high-power density and potential applications in self-powered devices, sensors, and smart buildings.
ENVIRONMENTAL SCIENCE-ADVANCES
(2023)
Article
Chemistry, Analytical
Kishore Kumar Aitha, Dantala Dinakar, K. V. R. Murthy, A. S. Sai Prasad, Divi Haranath
Summary: Direct white light emitting phosphors are essential in the display industry for improving the quality and efficiency of lighting sources. The investigated phosphor SrZr2CaLa2O8:Eu3+ showed promising characteristics and could generate direct white light in LEDs.
