Nanoscience & Nanotechnology

Review Chemistry, Multidisciplinary

Emerging S-Scheme Photocatalyst

Liuyang Zhang, Jianjun Zhang, Huogen Yu, Jiaguo Yu

Summary: This article presents the superiority and design criteria of the emerging S-scheme heterojunction in photocatalysis. By overcoming the challenges faced by single photocatalysts through the construction of heterojunctions, the S-scheme heterojunction has demonstrated its potential in improving photocatalysis. The critical understanding of the curved Fermi level in the S-scheme heterojunction interface and the current challenges and prospects of S-scheme heterojunction photocatalysts are also discussed.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination

Kaien Chong, Xiaopeng Xu, Huifeng Meng, Jingwei Xue, Liyang Yu, Wei Ma, Qiang Peng

Summary: This work demonstrates highly efficient polymer solar cells by improving charge extraction and suppressing charge recombination through side-chain engineering, adopting ternary blends, and introducing volatilizable solid additives. The optimized molecular structure and blend morphology lead to improved fill factor and power conversion efficiency.

ADVANCED MATERIALS (2022)

Review Nanoscience & Nanotechnology

Bioplastics for a circular economy

Jan-Georg Rosenboom, Robert Langer, Giovanni Traverso

Summary: Bioplastics have the potential to contribute to a more sustainable and circular economy by reducing carbon footprint and offering advantageous material properties. However, they also face challenges such as negative agricultural impacts, competition with food production, unclear end-of-life management, and higher costs. Emerging chemical and biological methods can enable the upcycling of plastic waste into higher-quality materials. Standardization and guidelines are needed to guide purchasing choices, and clear regulations and financial incentives are essential for the large-scale adoption of bioplastics in a truly sustainable manner.

NATURE REVIEWS MATERIALS (2022)

Review Chemistry, Physical

Design concept for electrocatalysts

Yao Wang, Xiaobo Zheng, Dingsheng Wang

Summary: Metal-based electrocatalysts with different sizes have shown different catalytic behaviors, and regulating the coordination environment of active sites is crucial for designing efficient electrocatalysts. This review summarizes the recent progress in heterogeneous supported single atoms, nanoclusters, and nanoparticles catalysts, proposing key factors for enhancing electrocatalytic performance and discussing current challenges and future opportunities in this field.

NANO RESEARCH (2022)

Article Chemistry, Multidisciplinary

Single-Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor

Rui Sun, Yao Wu, Xinrong Yang, Yuan Gao, Zeng Chen, Kai Li, Jiawei Qiao, Tao Wang, Jing Guo, Chao Liu, Xiaotao Hao, Haiming Zhu, Jie Min

Summary: The ternary strategy is an effective approach to achieve high-efficiency OSCs, but the nonradiative voltage loss limits further efficiency improvements. By incorporating an asymmetric guest acceptor BTP-2F2Cl, the OSCs show improved photoluminescence quantum yield, exciton diffusion length, and absorption spectrum, leading to enhanced power conversion efficiency.

ADVANCED MATERIALS (2022)

Review Chemistry, Multidisciplinary

Dimensional Design and Core-Shell Engineering of Nanomaterials for Electromagnetic Wave Absorption

Zhengchen Wu, Han-Wen Cheng, Chen Jin, Bintong Yang, Chunyang Xu, Ke Pei, Huibin Zhang, Ziqi Yang, Renchao Che

Summary: Electromagnetic wave absorption materials with core-shell structures can enhance performance through interfacial polarization, conduction networks, magnetic coupling, and magnetic-dielectric synergy. This review outlines the recent advances in low-dimensional core-shell electromagnetic wave absorption materials and discusses notable examples. Key information regarding dimensional design, structural engineering, performance, and structure-function relationship is comprehensively summarized.

ADVANCED MATERIALS (2022)

Review Chemistry, Multidisciplinary

Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

Ming Qin, Limin Zhang, Hongjing Wu

Summary: Comprehensive views on dielectric loss mechanisms provide important guidance for understanding the attenuation behavior of materials. Current researches focus more on materials synthesis rather than in-depth mechanism study. Therefore, further research on in-depth mechanisms, emphasis on new dielectric loss mechanisms, and new modulation strategies are needed to achieve simple and effective EM wave attenuation behavior modulation.

ADVANCED SCIENCE (2022)

Article Chemistry, Physical

Understanding the structure-performance relationship of active sites at atomic scale

Runze Li, Dingsheng Wang

Summary: This article discusses the key factors affecting the catalytic performance of metal-based atomically dispersed catalysts and their relationship with the active sites. It first introduces the effectiveness of active site design through coordination effects, then discusses the role of chemical bonds in the active sites and the influence of the spacing of active atoms in intermetallic compounds on catalytic behavior. Additionally, the importance of synergistic effects in catalyst design is emphasized, and the key parameters affecting catalytic performance at the atomic scale are summarized.

NANO RESEARCH (2022)

Article Chemistry, Multidisciplinary

pH/Glucose Dual Responsive Metformin Release Hydrogel Dressings with Adhesion and Self-Healing via Dual-Dynamic Bonding for Athletic Diabetic Foot Wound Healing

Yongping Liang, Meng Li, Yutong Yang, Lipeng Qiao, Huiru Xu, Baolin Guo

Summary: A dual-responsive hydrogel dressing was constructed for the treatment of type II diabetic foot ulcers and shown to promote wound healing in a rat model. The addition of metformin and graphene oxide further enhanced wound repair.

ACS NANO (2022)

Review Chemistry, Multidisciplinary

Heterointerface Engineering in Electromagnetic Absorbers: New Insights and Opportunities

Leilei Liang, Weihua Gu, Yue Wu, Baoshan Zhang, Gehuan Wang, Yi Yang, Guangbin Ji

Summary: Electromagnetic absorbers are playing increasingly essential role in the electronic information age and even towards the coming intelligent era. The advantages of heterointerface engineering and its EM characteristics inject vitality for designing high-efficiency EM absorbers, but there are still huge challenges in understanding and reinforcing these interface effects.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Binary Organic Solar Cells Breaking 19% via Manipulating the Vertical Component Distribution

Yanan Wei, Zhihao Chen, Guanyu Lu, Na Yu, Congqi Li, Jinhua Gao, Xiaobin Gu, Xiaotao Hao, Guanghao Lu, Zheng Tang, Jianqi Zhang, Zhixiang Wei, Xin Zhang, Hui Huang

Summary: The variation of the vertical component distribution has a significant impact on the photovoltaic performance of organic solar cells. This study demonstrates that sequential deposition of materials can improve the efficiency of solar cells.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Nanochemistry approach for the fabrication of Fe and N co-decorated biomass-derived activated carbon frameworks: a promising oxygen reduction reaction electrocatalyst in neutral media

Hassan Karimi-Maleh, Ceren Karaman, Onur Karaman, Fatemeh Karimi, Yasser Vasseghian, Li Fu, Mehdi Baghayeri, Jalal Rouhi, P. Senthil Kumar, Pau-Loke Show, Saravanan Rajendran, Afsaneh L. Sanati, Ali Mirabi

Summary: This study successfully improved the performance of the oxygen reduction reaction (ORR) in neutral media by tailoring a biomass-derived ORR electrocatalyst. The iron- and nitrogen-doped activated carbon framework showed superior ORR activity and long-term stability. The catalyst also demonstrated lower onset potential and better resistance to sulfur poisoning compared to the traditional platinum-based catalyst, paving the way for the development of low-cost nanocatalysts.

JOURNAL OF NANOSTRUCTURE IN CHEMISTRY (2022)

Article Chemistry, Physical

Janus (BNNS/ANF)-(AgNWs/ANF) thermal conductivity composite films with superior electromagnetic interference shielding and Joule heating performances

Yixin Han, Kunpeng Ruan, Junwei Gu

Summary: In this study, Janus (BNNS/ANF)-(AgNWs/ANF) composite films were successfully prepared, which exhibited one side insulating, one side conducting performance. The composite films showed high thermal conductivity, superior electromagnetic interference shielding effectiveness, good mechanical properties, stable temperature-voltage response characteristics, and reliable electrical stability.

NANO RESEARCH (2022)

Article Nanoscience & Nanotechnology

Efficient conversion of low-concentration nitrate sources into ammonia on a Ru-dispersed Cu nanowire electrocatalyst

Feng-Yang Chen, Zhen-Yu Wu, Srishti Gupta, Daniel J. Rivera, Sten Lambeets, Stephanie Pecaut, Jung Yoon Timothy Kim, Peng Zhu, Y. Zou Finfrock, Debora Motta Meira, Graham King, Guanhui Gao, Wenqian Xu, David A. Cullen, Hua Zhou, Yimo Han, Daniel E. Perea, Christopher L. Muhich, Haotian Wang

Summary: The research team has efficiently converted nitrate, a common pollutant in wastewater and groundwater, into valuable ammonia products using a Ru-dispersed Cu nanowire catalyst through electrochemical methods. This sustainable approach not only treats wastewater but also generates ammonia, but current low catalytic activities pose challenges. However, the team has developed a high-performance catalyst that achieves over 99% nitrate conversion into ammonia and successfully obtains high purity NH4Cl solid and NH3 liquid products.

NATURE NANOTECHNOLOGY (2022)

Review Chemistry, Multidisciplinary

Advanced Flame-Retardant Methods for Polymeric Materials

Bo-Wen Liu, Hai-Bo Zhao, Yu-Zhong Wang

Summary: Most organic polymeric materials are highly flammable, causing significant damages to human life and property through the large amounts of smoke, toxic gases, heat, and melt drips produced during burning. Conventional flame-retardant methods are facing difficulties in meeting the increasing flame-retardant requirements. Advanced flame-retardant methods, such as all-in-one intumescence and nanotechnology, have been developed to provide potential solutions to these challenges.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Multifunctional Superelastic, Superhydrophilic, and Ultralight Nanocellulose-Based Composite Carbon Aerogels for Compressive Supercapacitor and Strain Sensor

Huayu Liu, Ting Xu, Chenyang Cai, Kun Liu, Wei Liu, Meng Zhang, Haishun Du, Chuanling Si, Kai Zhang

Summary: In this study, conductive carbon aerogels with ultralow density and superhydrophilicity were developed based on synergistic hydrogen bonding, electrostatic interaction, and pi-pi interaction within regularly arranged layered porous structures. These aerogels exhibit high compressibility, fatigue resistance, excellent capacitive performance, and can be used as strain sensors.

ADVANCED FUNCTIONAL MATERIALS (2022)

Review Nanoscience & Nanotechnology

A multifunctional chemical toolbox to engineer carbon dots for biomedical and energy applications

Luka Dordevic, Francesca Arcudi, Michele Cacioppo, Maurizio Prato

Summary: This review focuses on the importance of photoluminescent carbon nanoparticles, or carbon dots, for biomedical and energy applications. These nanomaterials exhibit tunable light emission, dispersibility, and low toxicity, making them highly attractive for various purposes. The review discusses how chemical tools can impact the properties of carbon dots and presents synthetic strategies for functionalizing these nanomaterials. Examples are provided to illustrate the correlation between structure, composition, and function, offering insights into the future development of carbon dots.

NATURE NANOTECHNOLOGY (2022)

Review Nanoscience & Nanotechnology

Advances and applications of nanophotonic biosensors

Hatice Altug, Sang-Hyun Oh, Stefan A. Maier, Jiri Homola

Summary: This Review presents the progresses in label-free nanophotonic biosensors based on photonic or dielectric surfaces and metasurfaces, and discusses their challenges and benefits in the fields of public health, well-being, and biosafety. Nanophotonic devices can control light and enhance light-matter interactions at subwavelength scales, offering exciting prospects for biosensing applications.

NATURE NANOTECHNOLOGY (2022)

Review Nanoscience & Nanotechnology

Conductive Biomaterials as Bioactive Wound Dressing for Wound Healing and Skin Tissue Engineering

Rui Yu, Hualei Zhang, Baolin Guo

Summary: This review summarizes the design and application of conductive biomaterials for wound healing and skin tissue engineering. Conductive biomaterials with various structural forms, such as films, nanofibers, membranes, hydrogels, sponges, foams, and acellular dermal matrix, play important roles in electrotherapy, wound dressing, and wound assessment, and possess promising applications in the field.

NANO-MICRO LETTERS (2022)

Review Chemistry, Multidisciplinary

Recent Advances in Design of Electrocatalysts for High-Current-Density Water Splitting

Yuting Luo, Zhiyuan Zhang, Manish Chhowalla, Bilu Liu

Summary: The electrochemical water splitting technology is crucial for achieving global carbon neutrality. High-performance electrocatalysts that can operate at high current densities are essential for the industrial implementation of this technology. Recent advancements in this field have led to the development of various catalysts designed specifically for high current densities (> 200 mA cm(-2)). This article discusses these recent advances and summarizes the key factors that influence the catalytic performance in high current density electrocatalysis, including catalyst dimensionality, surface chemistry, electron transport path, morphology, and catalyst-electrolyte interaction. It highlights the importance of a multiscale design strategy that considers these factors comprehensively for developing high current density electrocatalysts. The article also provides insights into the future directions of this emerging field.

ADVANCED MATERIALS (2022)