The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• , making them multifunctional electronic and optical materials for applications in ion batteries [3][4], lubricants [5], gas detectors [6][7], photochromism [8][9], photocatalysis [10][11], and superconductors [12][13]. The molybdenum oxide MoO3 can crystalize into several structures, including α-MoO3 [14

• Information Supporting Information File 28: Photocatalysis performance of the MoO3 samples. Acknowledgements We thank the Institutional Center for Shared Technologies and Facilities of Institute of Process Engineering, Chinese Academy of Sciences for the in situ X-ray diffraction experiments. Funding This

ZnO-decorated SiC@C hybrids with strong electromagnetic absorption

• Liqun Duan,
• Zhiqian Yang,
• Yilu Xia,
• Xiaoqing Dai,
• Jian’an Wu and
• Minqian Sun

Beilstein J. Nanotechnol. 2023, 14, 565–573, doi:10.3762/bjnano.14.47

• photocatalysis, adsorption, and EM absorption [25]. Researchers have developed ZnO-based absorbing materials with different microstructures, such as core–shell structures [26], flower-like structures [27], rod-like structures [28], cage-like structures, and nanoparticles [29][30]. Wu et al. demonstrated that it

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• environment worldwide, in addition to the global energy crisis, is the increasing water pollution caused by micropollutants such as antibiotics and persistent organic dyes. Nanostructured semiconductors in advanced oxidation processes using photocatalysis have recently attracted a lot of interest as a

• treat contaminated water and wastewater, including adsorption, bioremediation, precipitation, electrocoagulation, filtration, membrane separation, flocculation, centrifugation, advanced oxidation processes based on photocatalysis, and chemical coagulation [4][5][6][7][8][9][10][11]. Each of these

• -photochemical techniques, such as chemical, radiation-induced, cavitation, electrochemical techniques, and photochemical processes [11][15][16][17]. One of the AOPs, photocatalysis, uses natural light – a resource that is both clean and recyclable – to completely degrade a variety of organic pollutants and

Non-stoichiometric magnetite as catalyst for the photocatalytic degradation of phenol and 2,6-dibromo-4-methylphenol – a new approach in water treatment

• Joanna Kisała,
• Anna Tomaszewska and
• Przemysław Kolek

Beilstein J. Nanotechnol. 2022, 13, 1531–1540, doi:10.3762/bjnano.13.126

• , Poland Institute of Physics, University of Rzeszow, 1 Pigonia Street, PL-35-310, Rzeszów, Poland 10.3762/bjnano.13.126 Abstract Phenol and 2,6-dibromo-4-methylphenol (DBMP) were removed from aqueous solutions by ozonolysis and photocatalysis. The properties and structural features of the catalysts and

• the available electrons, and, as a result, bromide ions can be released. The results confirm that magnetite is an effective photocatalyst in the degradation of halogenated aromatic pollutants. Keywords: magnetite; ozonolysis; persistent organic pollutants; photocatalysis; water treatment

• , ozonation, Fenton chemistry, and photocatalysis have been successfully used to remove persistent organic pollutants (POPs) or as a pre-treatment in conventional or biological methods [10]. Ozonation is an AOP technique that has been widely used to remove organic compounds such as drugs, pesticides

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• shows zero activity in the visible region. Keywords: carbon modification; hexagonal boron nitride (HBN); LED light; phenol; photocatalysis; Introduction Hexagonal boron nitride (HBN) commonly known as white graphene belongs to a class of two-dimensional layered crystalline materials. It comprises

• -responsive material with improved charge carrier density (2.97 × 1019 cm−3). The LED light harvesting properties were analysed through various established characterization techniques and the photocatalysis was verified by eliminating the aqueous phase methylene blue (MB: 93.83%) and phenol (48.56%) moieties

• conditions. The linear sweep voltammetry (LSV) studies were conducted under both dark and light conditions with a scanning speed of 5 mV/s. Photocatalytic activity The LED-light-driven photocatalysis experiments were performed in a 250 mL conical flask containing 50 mg of the as-synthesized material and 200

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• environmental restoration and energy conversion is photocatalysis powered by solar light. Traditional photocatalysts have limited practical uses due to inadequate light absorption, charge separation, and unknown reaction mechanisms. Discovering new visible-light photocatalysts and investigating their

• modification is crucial in photocatalysis. Bi-based photocatalytic nanomaterials have gotten much interest as they exhibit distinctive geometric shapes, flexible electronic structures, and good photocatalytic performance under visible light. They can be employed as stand-alone photocatalysts for pollution

• fabrication techniques and enhancement in Bi-based semiconductor photocatalysts. Various environmental applications, such as H2 generation and elimination of water pollutants, are also discussed in terms of semiconductor photocatalysis. Future developments will be guided by the uses, issues, and possibilities

Rapid fabrication of MgO@g-C₃N₄ heterojunctions for photocatalytic nitric oxide removal

• Minh-Thuan Pham,
• Duyen P. H. Tran,
• Xuan-Thanh Bui and
• Sheng-Jie You

Beilstein J. Nanotechnol. 2022, 13, 1141–1154, doi:10.3762/bjnano.13.96

• contributes significantly to the photocatalytic NO degradation efficiency. A photocatalysis mechanism of MgO@g-C3N4 is proposed taking into account the results of the DRS and ESR analyses and trapping tests. Because of the large bandgap of MgO, only g-C3N4 generates e−–h+ pairs under visible light (Equation 8

Green synthesis of zinc oxide nanoparticles toward highly efficient photocatalysis and antibacterial application

• Vo Thi Thu Nhu,
• Nguyen Duy Dat,
• Le-Minh Tam and
• Nguyen Hoang Phuong

Beilstein J. Nanotechnol. 2022, 13, 1108–1119, doi:10.3762/bjnano.13.94

• technologies have been proposed to remove organic pollutants from water, including coagulation coupled with sedimentation, biological processes, membrane filtration, adsorption, advanced oxidation, catalysis, and photocatalysis [1][2][3]. Using semiconductors as photocatalysts has been a widely studied

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

• Aisha Kanwal,
• Naheed Bibi,
• Sajjad Hyder,
• Arif Muhammad,
• Hao Ren,
• Jiangtao Liu and
• Zhongli Lei

Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93

• nanomaterials has proved to be useful for applications in a variety of disciplines, including chemical or biological sensing, bioimaging, drug delivery, photodynamic therapy, electrocatalysis, and photocatalysis, with advantages over commonly used semiconductor dots or conventional fluorescent probes such as

• techniques for improving synthesis, characterization, yield, and applications of CDs There are several outstanding review articles on different applications, such as photochemical and electrochemical applications [32], photocatalysis [33], optoelectronics [34], wastewater treatment [35], food safety

Spindle-like MIL101(Fe) decorated with Bi₂O₃ nanoparticles for enhanced degradation of chlortetracycline under visible-light irradiation

• Chen-chen Hao,
• Fang-yan Chen,
• Kun Bian,
• Yu-bin Tang and
• Wei-long Shi

Beilstein J. Nanotechnol. 2022, 13, 1038–1050, doi:10.3762/bjnano.13.91

• traditional measures were difficult to be popularized. Photocatalysis is considered as an alternative and promising strategy for degradation and mineralization of antibiotics due to its low cost, high efficiency, mild reaction condition, and no secondary pollution [9][10][11]. A variety of semiconductors have

• been used for antibiotic degradation [12][13][14][15][16][17]. However, poor adsorptive ability, low quantum yield, and rapid recombination of photogenerated carriers restrict the real applications of photocatalysis in the removal of CTC from wastewater [18]. Thus, it is still crucial to develop

• ) shows strong adsorption capacity in the dark and a poorer photocatalytic activity. With the photocatalysis of MIL101(Fe), the photodegradation efficiency of CTC only could reach 64.5% after irradiation for 120 min. Compared with MIL101(Fe), Bi2O3/MIL101(Fe) composites exhibit a slightly weakened

Solar-light-driven LaFe_xNi_1−xO₃ perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants

• Chao-Wei Huang,
• Shu-Yu Hsu,
• Jun-Han Lin,
• Yun Jhou,
• Wei-Yu Chen,
• Kun-Yi Andrew Lin,
• Yu-Tang Lin and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79

• methods to treat wastewater to purify water quality, such as electrochemical oxidation [12], Fenton method [13], ozonation [14], and photocatalysis [15]. They can achieve a fast reaction rate and extremely high organic removal ratio under average temperature and pressure to remove or decompose organic

• on our knowledge of photocatalysis [21][22], the benefits of Fenton reaction and photocatalysis are combined to develop a conceptual catalytic design to expand the photocatalytic pathway of Fenton oxidation, called photocatalytic Fenton-like reaction or heterogeneous photo-Fenton-like reaction [23

• understand the effect of the photocatalysis and the Fenton reaction in the degradation reaction, some degradation tests were also carried out as controlling experiments for comparison, including: (1) without adding photocatalyst (No catalyst), (2) without light (No light), and (3) without adding H2O2 (No

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• photocatalytic reduction of Cr(VI), while hydroxyl radicals and reactive holes contributed to the photocatalytic degradation of rhodamine B. Keywords: biomimetic synthesis; cellulose; nanoarchitectonics; nanocomposite; nanotubes; photocatalysis; pollutants; Introduction The direct emission of untreated

• pollutants including dyes, organic matter, and heavy metals has caused disastrous consequences to the ecosystem [1]. Cr(VI) is one of the unmanageable pollutants in industrial effluents. It is highly toxic, carcinogenic, and harmful to the lungs, liver, and other organs [2][3]. Photocatalysis is a promising

• photocorrosion [20]. Among them, the Aurivillius phase bismuth tungstate (Bi2WO6) material is applied in visible-light photocatalysis due to its effective response to visible light and stable physicochemical properties [21]. Bi2WO6 is formed by the alternating growth of (Bi2O2)2+ and perovskite-structured (WO4)2

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

• Senuri Kumarage,
• Imalka Munaweera and
• Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

• Viet Van Pham,
• Hong-Huy Tran,
• Thao Kim Truong and
• Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

• Viet Van Pham Hong-Huy Tran Thao Kim Truong Thi Minh Cao Photocatalysis Research Group (PRG), Faculty of Materials Science and Technology, University of Science, VNU–HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, 700000, Viet Nam HUTECH University, 475A Dien Bien Phu Street, Binh

• review. Keywords: green products; nanomaterials; NO oxidation; photocatalysis; SnO2; Review Introduction A World Health Organization (WHO) report indicated that 4.2 million deaths every year occur due to exposure to ambient (outdoor) air pollution [1]. This number is much higher than the deaths from

• vacancy defects (OVs) [15][16]. Therefore, SnO2 is considered a potential material in various technological fields such as catalysis, optoelectronic devices, rechargeable lithium batteries, electrocatalysis, photocatalysis, solar energy conversion, and gas sensing [17][18][19][20][21][22][23][24]. In the

Morphology-driven gas sensing by fabricated fractals: A review

• Vishal Kamathe and
• Rupali Nagar

Beilstein J. Nanotechnol. 2021, 12, 1187–1208, doi:10.3762/bjnano.12.88

Self-assembly of amino acids toward functional biomaterials

• Huan Ren,
• Lifang Wu,
• Lina Tan,
• Yanni Bao,
• Yuchen Ma,
• Yong Jin and
• Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

• physical and chemical properties, and great potential in cell culture, photocatalysis, drug delivery, and antibacterial applications [27]. The Fmoc modification of a single amino acid is the simplest building block, among which Fmoc-phenylalanine is the most studied due to its good hydrocoagulant

First-principles study of the structural, optoelectronic and thermophysical properties of the π-SnSe for thermoelectric applications

• Muhammad Atif Sattar,
• Najwa Al Bouzieh,
• Maamar Benkraouda and
• Noureddine Amrane

Beilstein J. Nanotechnol. 2021, 12, 1101–1114, doi:10.3762/bjnano.12.82

• infrared range. Alternatively, the π-SnSe is expected to be effective closer to the visible range, with technological implications in solar cells, thermoelectric applications, and photocatalysis [78]. The broader region along with the high values of the absorption coefficient for the π-SnSe indicates that

Assessment of the optical and electrical properties of light-emitting diodes containing carbon-based nanostructures and plasmonic nanoparticles: a review

• Keshav Nagpal,
• Erwan Rauwel,
• Frédérique Ducroquet and
• Protima Rauwel

Beilstein J. Nanotechnol. 2021, 12, 1078–1092, doi:10.3762/bjnano.12.80

• ); plasmonic nanoparticles; quantum dots; Review Introduction Nanomaterials have engendered the miniaturization of devices, bringing about advances in a variety of fields, such as biomedicine, environmental technologies, optoelectronics, and photocatalysis [1][2]. In particular, light-emitting diodes (LED

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

• Malgorzata Aleksandrzak,
• Michalina Kijaczko,
• Wojciech Kukulka,
• Daria Baranowska,
• Martyna Baca,
• Beata Zielinska and
• Ewa Mijowska

Beilstein J. Nanotechnol. 2021, 12, 473–484, doi:10.3762/bjnano.12.38

• ; doping; hydrogen evolution reaction; photocatalysis; polymeric carbon nitride; Introduction Currently, the biggest problems of civilization seem to be the global energy crisis and environmental pollution. Both of these problems are directly related to each other. The pollution of our planet is mainly

• due to fossil fuels used in the energy industry, the combustion of which generates CO2 emissions. The ideal solution of these problems appears to be the use of photocatalysis. The solar light, as a driving force, has been widely used in different fields, such as water in water-splitting to generate

• photocatalysis by imparting additional merits of each of the co-dopants of the photocatalyst. Polymeric carbon nitride has been co-doped with B/F [36], S/P [37], or C/P [38]. Yi et al. showed that PCN co-doped with S and Cl had better catalytic efficiency in the degradation of rhodamine B and 4-nitrophenol under

Unravelling the interfacial interaction in mesoporous SiO₂@nickel phyllosilicate/TiO₂ core–shell nanostructures for photocatalytic activity

• Bridget K. Mutuma,
• Xiluva Mathebula,
• Isaac Nongwe,
• Bonakele P. Mtolo,
• Boitumelo J. Matsoso,
• Rudolph Erasmus,
• Zikhona Tetana and
• Neil J. Coville

Beilstein J. Nanotechnol. 2020, 11, 1834–1846, doi:10.3762/bjnano.11.165

• nanostructures are attractive candidates for photocatalysis owing to their tunable physicochemical properties, their interfacial contact effects, and their efficacy in charge-carrier separation. This study reports, for the first time, on the synthesis of mesoporous silica@nickel phyllosilicate/titania (mSiO2

• brookite phases, the anatase phase has been extensively used for photocatalysis owing to its enhanced surface properties [7][8][9][10]. In a typical photocatalytic process, photons of energy greater than the bandgap energy of TiO2 excite electrons to the conduction band leaving holes in the valence band

Nanocasting synthesis of BiFeO₃ nanoparticles with enhanced visible-light photocatalytic activity

• Thomas Cadenbach,
• Maria J. Benitez,
• A. Lucia Morales,
• Cesar Costa Vera,
• Luis Lascano,
• Francisco Quiroz,
• Alexis Debut and
• Karla Vizuete

Beilstein J. Nanotechnol. 2020, 11, 1822–1833, doi:10.3762/bjnano.11.164

• radical trapping experiments. Keywords: bismuth ferrite (BiFeO3); dye; nanocasting; nanoparticles; photocatalysis; rhodamine B; SBA-15; Introduction In the face of a continuously growing demand, the production of safe and readily available water is one of the biggest challenges humanity is facing

• the production of secondary waste products that require further treatment. Advanced oxidation processes, in general, and heterogeneous semiconductor photocatalysis, in particular, are promising candidates to efficiently treat wastewater as they are cost-effective and green treatment methods in which

• separate the catalyst powder from the solution. The absorbance of each sample during photocatalysis was measured at the maximum absorption peak of RhB. Characterization techniques and equipment The structure and phase purity of the nanomaterials synthesized here were characterized using powder X-ray

Effect of Ag loading position on the photocatalytic performance of TiO₂ nanocolumn arrays

• Jinghan Xu,
• Yanqi Liu and
• Yan Zhao

Beilstein J. Nanotechnol. 2020, 11, 717–728, doi:10.3762/bjnano.11.59

• ) of Ag and the absorption of light by TiO2. These results represent a promising step forward to the development of high-performance photocatalysts for energy conversion and storage. Keywords: anodic aluminum oxide template; nanocolumn arrays; photocatalysis; surface plasmon resonance; Introduction

• Since 1972, when Shimada and Honda discovered the photocatalysis of titanium dioxide (TiO2) under ultraviolet light, research in this field has continued to grow [1]. Recently, TiO2 has been utilized in the fields of photocatalytic water decomposition [2], photocatalytic organic degradation [3], and

• photocatalysis was performed under 300 W Xe light using 15 mL of a 5 ppm MB aqueous solution. Before starting the photocatalysis, the sample was immersed in the MB solution and allowed to remain in the dark for 30 min to reach the adsorption–desorption balance. Then, the solution was placed under a light source

Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

• Wei Fang,
• Liang Yu and
• Lan Xu

Beilstein J. Nanotechnol. 2020, 11, 631–650, doi:10.3762/bjnano.11.50

• three times, and the degradation rate remained above 90%. Keywords: electrospinning; composite nanofibers; heterostructured CuO–ZnO; hydrothermal synthesis; photocatalysis; semiconductor oxide; Introduction Water remediation is one of the main scientific research subjects regarding environmental

• , electrical, mechanical and chemical properties, which might result in applications in photocatalysis [26]. Electrospinning is a simple and convenient method for preparing composite nanofibers (CNFs) [27][28][29][30][31]. CNFs have been widely applied as carrier material due to their outstanding

• electrospinning and observed their photocatalytic performance. Yuan et al. [35] obtained TiO2/WO3 CNFs using electrospinning and applied them in the photocatalytic removal of mercury. Teng et al. [36] prepared TiO2/NiO CNFs by electrospinning and used them for photocatalysis. Polyacrylonitrile (PAN) has been

Adsorptive removal of bulky dye molecules from water with mesoporous polyaniline-derived carbon

• Hyung Jun An,
• Jong Min Park,
• Nazmul Abedin Khan and
• Sung Hwa Jhung

Beilstein J. Nanotechnol. 2020, 11, 597–605, doi:10.3762/bjnano.11.47

• quantity of dyes can affect the color of the water). The removal of dye molecules from contaminated water is very important and has been carried out via various methods such as oxidation [3][4], including advanced oxidation processing (AOP), photocatalysis [5], biological treatment, coagulation, and

Atomic-resolution imaging of rutile TiO₂(110)-(1 × 2) reconstructed surface by non-contact atomic force microscopy

• Daiki Katsube,
• Shoki Ojima,
• Eiichi Inami and
• Masayuki Abe

Beilstein J. Nanotechnol. 2020, 11, 443–449, doi:10.3762/bjnano.11.35

• important to understand the reaction process, hence investigations of chemical and physical surface characteristics and the structure of the photocatalyst are necessary. The rutile TiO2(110) surface has often been the subject of atomic-level studies in the field of photocatalysis since the preparation of a