NiO/MnO_2分级纳米片阵列复合材料的制备与超电容性能

通过化学浴沉积和水热法在泡沫镍上制备了NiO/MnO_2分级纳米片阵列复合材料,XRD和SEM测试表明NiO纳米片垂直生长在泡沫镍上,交叉形成网状阵列结构;MnO_2纳米介孔泡沫进一步生长在NiO纳米片两侧,与NiO形成了壳核式的复合结构。循环伏安和恒流充放电测试发现,NiO/MnO_2分级纳米片阵列复合材料的电化学性能相比复合前得到明显改善,在1 A·g~(-1)的电流密度下,比电容提高至1 297 F·g~(-1);2 A·g~(-1)下循环1 000次,比电容保持率高达97%,比电容和循环性能的改善是由于分级纳米片阵列复合结构方便了电解液传质,扩大了活性材料与电解液的接触,促进了赝电容反应,提高了NiO和MnO_2的结构稳定性。     

CuO表面修饰锐钛矿TiO2纳米管阵列及其电化学嵌锂性能

以(CH_2OH)_2、NH4F和HCl为电解液,纯Ti片、CuCl_2和Na NO3为主要原料,联用阳极氧化和水热法制备CuO表面修饰锐钛矿TiO_2纳米管阵列锂离子电池负极材料(CuO/TiO_2)。使用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、能谱仪(EDS)、X射线光电子能谱仪(XPS)和X射线衍射(XRD),研究样品的形貌特征、元素分布、价态和微观物相组成。利用电池充放电测试仪和电化学工作站,探讨材料的电化学嵌锂性能。结果表明,表面修饰后的锐钛矿TiO_2纳米管阵列外侧出现了大量绒毛状纳米CuO,单个绒毛结构的宽度约4 nm,长度约10 nm。在0.3C的电流密度下进行恒电流充放电测试,首次放电容量为550 m Ah·g~(-1),充电容量为490 m Ah·g~(-1)。50次循环后,可逆电流容量仍保持在320 m Ah·g~(-1),具有良好的循环稳定性和电化学特性。     

二氧化硅纳米颗粒表面原位还原银纳米簇电化学发光传感界面的构建与分子识别

通过牛血清蛋白(BSA)对二氧化硅纳米颗粒(SiO₂ NPs)表面进行氨基、 巯基功能化, 随后以BSA同时作为模板和还原剂, 原位生成银纳米簇(Ag NCs), 获得显著增强阴极电化学发光(ECL)信号的Ag NCs-SiO₂ NPs复合纳米材料. 结果表明, 当测试溶液中含有L-半胱氨酸(L-Cys)时, 其与传感界面上的Ag NCs发生共价结合作用, 从而猝灭其ECL信号. 基于该原理, 构建了“开-关”型ECL信号响应模式的L-Cys生物传感器. 该传感器检测L-Cys的浓度范围为50 nmol/L~50 μmol/L, 最低检测限达到13.7 nmol/L, 能够实现L-Cys的高灵敏及特异性分析, 有望在生物、 医学等领域得到广泛应用.     

可注射的壳聚糖/纳米金温敏性水凝胶的构筑及其光热性能研究

为提高对恶性肿瘤的治疗效率,制备了具有光热性能的壳聚糖/纳米金可注射性水凝胶用于肿瘤的多次光热治疗.选用生物基大分子壳聚糖(CS)原位还原制备了壳聚糖-纳米金(CS-Au NPs)复合物.再加入β-甘油磷酸钠(β-GP)制备了相转变温度接近人体体温的温敏性水凝胶(CGP/Au NPs).实验结果表明,CGP/Au NPs在室温下为溶胶,具有可注射性;达到人体体温后,快速形成凝胶.由于Au NPs的表面等离子体共振效应,基于壳聚糖/纳米金的复合凝胶在激光照射下具有优异的光热转换性能,最高温度可达55°C,而且在多次激光照射后仍可以保持较好的光热转换能力.Au NPs可在壳聚糖水凝胶的帮助下长时间固定于病灶,用于肿瘤的多次光热治疗.另外,CGP/Au NPs复合水凝胶具有良好的稳定性,Au NPs在凝胶内部分布均匀一致,可有效避免Au NPs聚集而产生局部高温或从凝胶内部泄漏而影响光热治疗的效果.同时,CGP/Au NPs具有优异的生物相容性和生物可降解性能.因此,基于壳聚糖与Au NPs的可注射性水凝胶,有望实现肿瘤的“一次注射,多次光热治疗”的目的.     

银/金纳米线阵列表面增强拉曼基底的制备及对孔雀石绿的高灵敏度检测

利用种子介导的软模板生长方法制备了金纳米线(Au NWs)阵列, 通过调节生长温度控制Au NWs阵列的形貌, 最后在经硼氢化钠(NaBH₄)清洗过的Au NWs阵列上化学沉积银纳米颗粒(Ag NPs), 制得银/金纳米线(Ag/Au NWs)阵列作为表面增强拉曼散射(SERS)基底. 选用罗丹明6G(R6G)作为拉曼探针分子测定了Ag/Au NWs阵列的SERS性能. 结果表明, Ag/Au NWs阵列作为SERS基底具有高灵敏度、 优异的信号均匀性和良好的稳定性. 使用Ag/Au NWs阵列对孔雀石绿(MG)检测的检出限可低至1×10^-8 mol/L, 线性范围为 1×10^-8~1×10^-4 mol/L. NaBH₄可以在不影响SERS性能的情况下去除Ag/Au NWs阵列上吸附的分子, 使得 SERS基底可以重复使用. 使用Ag/Au NWs阵列对湖水中的MG进行检测, 得到了可靠的回收率, 证明Ag/Au NWs 阵列在检测环境水体中的孔雀石绿上具有应用潜力.     

超薄骨架有序介孔CdS/NiS的制备及光催化产氢性能（英文）

采用有序介孔氧化硅为硬模板,通过纳米浇筑法制备了由螺旋骨架构建的有序介孔硫化镉(CdS)光催化材料.该光催化材料具有约5 nm厚的超薄骨架和大的比表面积(238 m~2/g),能有效缩短光催化反应中光生电荷迁移到表面进行反应的距离并同时提供更多的反应活性位点,从而增强光催化性能.通过原位化学沉积法将不同量的助催化剂硫化镍(NiS)沉积到有序介孔CdS表面,得到了一系列超薄骨架有序介孔CdS/NiS复合光催化材料.可见光照射下的光催化产氢活性测试结果表明,负载适量NiS的有序介孔CdS具有显著增强的光催化产氢活性(3.84 mmol·h~(-1)·g~(-1),约为负载相同量NiS的普通商业化CdS材料(0.22 mmol·h~(-1)·g-1)的17.5 倍.     

膨胀蛭石包覆聚苯乙烯发泡颗粒/水泥复合泡沫材料的制备及性能

利用环氧树脂将膨胀蛭石黏附在聚苯乙烯发泡(EPS)颗粒表面上,制备表面无机化包覆的EPS颗粒(CEPS),将其与水泥胶凝材料混合,制备CEPS/水泥复合泡沫材料.探讨膨胀蛭石的包覆量及CEPS颗粒用量等对复合泡沫材料的力学性能和保温性能的影响,并采用锥形量热法和喷枪火焰燃烧法研究了复合泡沫材料的防火性能.研究结果表明,复合泡沫的抗折强度、抗压强度、干密度和导热系数均随包覆量的增大而增加;当CEPS颗粒用量为1000 m L时,复合泡沫材料的干密度和导热系数较低,分别为269.3 kg/m~3和0.0544 W/(m·K),抗折强度和抗压强度相对较高.锥形量热实验结果表明,随着包覆量的增加,复合泡沫的最大热释放速率、总放热量和烟释放量都逐渐降低,着火时间逐渐延长.喷枪火焰燃烧法实验结果表明,除了复合泡沫断面上与火焰接触的表面裸露的EPS颗粒燃尽外,燃烧后断面结构都能够保持比较完整.     

银掺杂介孔氧化铝抗菌剂的一步合成与表征

以Al(NO_3)_3·9H_2O和AgNO_3为原料,采用水热法制备了介孔氧化铝纳米粒子(Mesoporous Al_2O_3NPs)和银掺杂介孔氧化铝纳米粒子(Mesoporous Ag/Al_2O_3NPs),通过X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、X射线荧光光谱(XRF)、能量分散X射线衍射(EDX)和低温N2吸附-脱附等手段对产物进行了表征,通过最低抑菌浓度和抑菌圈实验研究了材料的抗菌性能.XRD分析表明在介孔Ag/Al_2O_3NPs中Al_2O_3是唯一结晶相,Ag掺杂后,介孔Ag/Al_2O_3NPs晶格常数和半高峰宽增大,晶面间距[(111),(400)和(440)面]减小.FE-SEM形貌分析表明掺杂后的介孔Ag/Al_2O_3NPs颗粒直径减小而孔径增大.EDX和XRF分析表明介孔Ag/Al_2O_3NPs中O/Al摩尔比为1.5,与Al_2O_3NPs中O/Al摩尔比相同.综合XRD和XRF分析结果认为,Ag进入介孔Al_2O_3晶格间隙形成间隙固溶体.低温N2吸附-脱附分析表明掺杂后的介孔Ag/Al_2O_3NPs比表面积、孔体积和孔径增大.曝气抗菌实验结果表明介孔Ag/Al_2O_3NPs的抗菌机理是活性氧和金属银的协同作用.介孔Ag/Al_2O_3NPs对革兰氏阴性菌(大肠杆菌)和革兰氏阳性菌(金黄色葡萄球菌)具有明显的抗菌效果,对大肠杆菌和金黄色葡萄球菌的最低抑菌浓度(MIC)均为80μg/m L,抑菌圈直径分别为26 mm和24 mm.     

网状骨架CVD生长碳纳米管用于重盐水脱盐

目前,太阳能海水淡化领域通过光子管理、纳米尺度热调控、开发新型光热转换材料、设计高效光吸收太阳能蒸馏器等方法实现了界面太阳能驱动蒸汽生成,这种绿色、可持续的脱盐技术已成为近年来的研究热点。碳基材料如碳纳米管、石墨烯、炭黑、石墨等都有涵盖整个太阳光光谱的光吸收能力,是一类新型的光热转换材料。本文通过对材料进行微结构设计,使用化学气相沉积(CVD)技术,在不锈钢网状骨架上生长碳纳米管形成光热转换活性区,以实现高效光吸收、光热转换,并进一步设计了房屋型太阳能蒸发器,其中盐水表面被微米网状-碳纳米管蒸发膜覆盖,利用光热转换过程产生的热量驱动重盐水中的水蒸发产生水蒸气,最后对水蒸气进行冷凝回收实现脱盐。实验结果表明,当光照强度为1个太阳光(1 kW·m~(-2))时,膜表面温度迅速升高并稳定于84.37°C,对于重盐水(100 g·L~(-1) NaCl)的脱盐率达到99.92%,可实现稳定持续的重盐水脱盐。这种方法可用于构建多孔界面光热转换脱盐系统,对设计界面光蒸汽转化膜材料及器件,实现规模化海水淡化具有重要的意义。     

钙钛矿型甲醇水蒸气重整制氢催化材料的研究

采用溶胶凝胶法合成了钙钛矿复合氧化物, 负载氧化铜后得钙钛矿负载型催化材料, 通过XRD (X射线衍射分析)、BET(比表面积测试)、H₂-TPR(程序升温还原分析)、XPS (X射线光电子能谱)等手段对催化材料进行了表征, 考察了不同种类钙钛矿负载纳米铜催化材料的结构、性质对甲醇水蒸气重整制氢性能的影响. 结果显示, 钙钛矿负载纳米铜催化材料的催化活性主要与催化剂的铜比表面积、表面晶格氧缺位以及活性组分和载体间的相互作用有关. 其中, CuO/LaCrO₃钙钛矿负载型催化材料的表面氧空穴含量较多, 活性组分与载体间相互作用较强, 因此催化甲醇水蒸气重整制氢活性较好. 当反应温度为360 ℃时, CuO/LaCrO₃钙钛矿型催化剂并未出现明显失活现象, 甲醇转化率为98.6%, 产氢速率为694.9 mL•kg_cat ^–1•s ^–1.     

MXene/枝状Co/聚偏氟乙烯复合光热膜制备及其界面蒸发性能

使用湿法刻蚀方式将Ti₃AlC₂刻蚀剥离成单/少层Ti₃C₂T_xMXene纳米片,采用电化学还原法制备枝状Co,然后以亲水的聚偏氟乙烯(PVDF)膜为基底通过真空抽滤制备Ti₃C₂T_x/枝状Co/PVDF复合光热膜。对复合材料的结构和形貌进行表征,研究了复合光热膜的光吸收性能和界面蒸发性能。结果表明,在模拟1个太阳光照下(光照强度为1kW·m^-2),Ti₃C₂T_x/枝状Co/PVDF复合光热膜的光吸收率达到95.3%,纯水蒸发速率达到1.78kg·m^-2·h^-1,界面蒸发效率高达97.5%。此外,还测试了在模拟海水中的界面蒸发性能,蒸发冷凝得到的水达到世界卫生组织(WHO)和美国环境保护署(EPA)饮用水标准,蒸发速率达到1.61kg·m^-2·h^-1,循环5次后稳定在1.59kg·m^-2·h^-1。     

MXene/枝状Co/聚偏氟乙烯复合光热膜制备及其界面蒸发性能

使用湿法刻蚀方式将Ti₃AlC₂刻蚀剥离成单/少层Ti₃C₂T_x MXene纳米片,采用电化学还原法制备枝状Co,然后以亲水的聚偏氟乙烯(PVDF)膜为基底通过真空抽滤制备Ti₃C₂T_x/枝状Co/PVDF复合光热膜。对复合材料的结构和形貌进行表征,研究了复合光热膜的光吸收性能和界面蒸发性能。结果表明,在模拟1个太阳光照下(光照强度为1 kW·m^-2),Ti₃C₂T_x/枝状Co/PVDF复合光热膜的光吸收率达到95.3%,纯水蒸发速率达到1.78 kg·m^-2·h^-1,界面蒸发效率高达97.5%。此外,还测试了在模拟海水中的界面蒸发性能,蒸发冷凝得到的水达到世界卫生组织(WHO)和美国环境保护署(EPA)饮用水标准,蒸发速率达到1.61 kg·m^-2·h^-1,循环5次后稳定在1.59 kg·m^-2·h^-1。     

Laser-assisted synthesis of cobalt@N-doped carbon nanotubes decorated channels and pillars of wafer-sized silicon as highly efficient three-dimensional solar evaporator

The Co@NCNTs/Si pillars with channels is assemble to a suitable pure water gathering device, which is applied in seawater desalination and sewage purification to produce pure water by utilizing solar energy. High-efficiency utilization of solar energy to generate water vapor is popular, recyclable, and environmentally friendly for seawater desalination and sewage purification, helping to alleviate the global water shortage crisis. Here, we report an efficient and simple method to prepare a three-dimensional (3D) evaporator for steam generation by harnessing the power of the sun. This evaporation is composed of one-dimensional (1D) cobalt embedded and nitrogen doped carbon nanotubes (Co@NCNTs) and 3D silicon pillars array structure (Si pillars). The Co@NCNTs/Si pillars shows a wide light absorption range provided by carbon nanotubes and a long light absorption path because of the silicon pillars. The surface temperature of the sample rises rapidly in 1.5 min and exceed 80 °C under solar illumination of one sun. The water evaporation can be high as 1.21 kg m⁻² h⁻¹ under one sun irradiation (1 kW/m²) with the energy efficiency up to 82.4%. This scalable Co@NCNTs/Si pillars can prepare pure water from seawater and sewage, where the removal rate of ions in seawater and pollutants in sewage is similar to 100%. Based on our research, this multistage three-dimensional structure is a simple and efficient novel photothermal material for extensive seawater desalination and sewage purification.     

Thermal Efficiency of Solar Steam Generation Approaching 100 % through Capillary Water Transport

Solar‐driven interfacial water evaporation yield is severely limited by the low efficiency of solar thermal energy. Herein, the injection control technique (ICT) achieves a capillary water state in rGO foam and effectively adjusts the water motion mode therein. Forming an appropriate amount of capillary water in the 3D graphene foam can greatly increase the vapor escape channel, by ensuring that the micrometer‐sized pore channels do not become completely blocked by water and by exposing as much evaporation area as possible while preventing solar heat from being used to heat excess water. The rate of solar steam generation can reach up to 2.40 kg m^?2 h^?1 under solar illumination of 1 kW m^?2, among the best values reported. In addition, solar thermal efficiency approaching 100 % is achieved. This work enhances solar water‐evaporation performance and promotes the application of solar‐driven evaporation systems made of carbon‐based materials.     

Improvement of the performance of dye sensitized solar cell using ZnO nanorods array deposited with Ag nanoparticles as photoanode

Well-aligned zinc oxide (ZnO) nanorods (NRs) arrays deposited with Ag nanoparticles (NPs) are prepared by a liquid phase epitaxial growth process followed by a reduction of Ag on the surface of the ZnO NRs. Transmission electron microscopy images show that most Ag NPs are deposited on the upper part of the ZnO NRs, and the overall optical absorption in the range of visible light can be enhanced due to the surface plasmon resonance of the Ag NPs. ZnO NRs with and without Ag NPs are used to assemble dye sensitized solar cells. Devices fabricated from the Ag NPs/ZnO NRs composite arrays exhibit a higher open voltage, short circuit current and fill factor than that fabricated from the bare ZnO NRs array, thus, the overall efficiency of the as-fabricated cell is increased from less than 0.5?% to 0.8?%. The main reason for the enhancement of the device performance may be ascribed to that the electron transfer back from ZnO to the dye and electrolyte is blocked by the Schottky barrier at the Ag/ZnO interface, resulting in a great increase of the electron density at the ZnO conduction band.     

Multifunctional Ag‐Decorated Porous TiO2 Nanofibers in Dye‐Sensitized Solar Cells: Efficient Light Harvesting,Light Scattering,and Electrolyte Contact

Designing the photoanode structure in dye‐sensitized solar cells (DSSCs) is vital to realizing enhanced power conversion efficiency (PCE). Herein, novel multifunctional silver‐decorated porous titanium dioxide nanofibers (Ag/pTiO₂ NFs) made by simple electrospinning, etching, and chemical reduction processes are introduced. The Ag/pTiO₂ NFs with a high surface area of 163 m² g^?1 provided sufficient dye adsorption for light harvesting. Moreover, the approximately 200 nm diameter and rough surface of the Ag/pTiO₂ NFs offered enough light scattering, and the enlarged interpores among the NFs in the photoanode also permitted electrolyte circulation. Ag nanoparticles (NPs) were well dispersed on the surface of the TiO₂ NFs, which prevented aggregation of the Ag NPs after calcination. Furthermore, a localized surface plasmon resonance effect by the Ag NPs served to increase the light absorption at visible wavelengths. The surface area and amount of Ag NPs was optimized. The PCE of pTiO₂ NF‐based DSSCs was 27 % higher (from 6.2 to 7.9 %) than for pure TiO₂ NFs, whereas the PCE of Ag/pTiO₂ NF‐based DSSCs increased by about 12 % (from 7.9 to 8.8 %). Thus, the PCE of the multifunctional pTiO₂ NFs was improved by 42 %, that is, from 6.2 to 8.8 %.     

Hierarchical porous aero-cryogels for wind energy enhanced solar vapor generation

An integrated aero-cryogel (A-CG) monolith with hierarchical porous structure was developed by inter-crosslinking of cellulose nanofiber/polylactic acid nanocomposite aerogel and carboxymethyl cellulose (CMC) cryogel (CG). The photothermal nanoparticles-enriched CMC CG phase served as a sunlight absorbing layer, exhibiting a broadband sunlight absorption of 98%. Due to the large amount of weakly bounded water molecules, the swelled CMC CG possessed a lower evaporation enthalpy than that of pure water, which facilitates water evaporation, while the nanocomposite aerogel phase acted as an excellent thermal insulator and afforded highly efficient water transport channels. Thus, the developed A-CG monolith supported by insulated polystyrene foam to protrude above the water surface, could reach an evaporation rate of 2.16 kg m^?2 h^?1 under an irradiation of 1 Sun (100 mw/cm²) with an efficiency of 93.6%. More remarkably, when the wind energy was imparted, an evaporation rate of 5.67 kg m^?2 h^?1 was achieved at a wind speed of 3 m s^?1. The high-efficiency purification outcomes of various raw water demonstrate the great potentials of A-CG material in solar vapor generation.

Graphical abstract

     

Ag@TiO2 Nanoprisms with Highly Efficient Near‐Infrared Photothermal Conversion for Melanoma Therapy

Melanoma is a primary reason of death from skin cancer and associated with high lethality. Photothermal therapy (PTT) has been developed into a powerful cancer treatment technique in recent years. Here, we created a low‐cost and high‐performance PTT agent, Ag@TiO₂ NPs, which possesses a high photothermal conversion efficiency of ≈65 % and strong near‐infrared (NIR) absorption about 808 nm. Ag NPs were synthesized using a two‐step method and coated with TiO₂ to obtain Ag@TiO₂ NPs by a facile sol‐gel method. Because of the oxide, Ag@TiO₂ NPs exhibit remarkable high photothermal conversion efficiencies and biocompatibility in vivo and in vitro. Cytotoxicity and therapeutic efficiency of photothermal cytotoxicity of Ag@TiO₂ NPs were tested in B16‐F10 cells and C57BL/6J mice. Under light irradiation, the elevated temperature causes cell death in Ag NPs‐treated (100 μg mL^?1) cells in vitro (both p<0.01). In the case of subcutaneous melanoma tumor model, Ag@TiO₂ NPs (100 μg mL^?1) were injected into the tumor and irradiated with a 808 nm laser of 2 W cm^?2 for 1 minute. As a consequence, the tumor volume gradually decreased by NIR laser irradiation with only a single treatment. The results demonstrate that Ag@TiO₂ NPs are biocompatible and an attractive photothermal agent for cutaneous melanoma by local delivery.     

Efficient photodegradation of methyl orange and bactericidal activity of Ag doped ZnO nanoparticles

In the present work, silver-doped ZnO (Ag–ZnO NPs) with different concentrations of silver ions (0.3, 0.5, 1.0 and 1.5 mol %) were synthesized by using a simple co-precipitation method. The Ag–ZnO NPs were primarily characterized by XRD, FT-IR, SEM, EDS, TEM, UV–Vis. DRS, PL and BET surface area. The XRD analysis of Ag–ZnO NPs shows a wurtzite structure and optimized Ag–ZnO NPs (1.0 mol %) exhibit a lower crystallite size of 15.96 nm than that of bare ZnO (19.07 nm). Optical study shows a decrease in band gap from 3.13 to 2.97 eV as the concentration of Ag ions increases from 0.3 to 1.5 mol%. TEM images reveal the spherical shape particle with sizes ranging between 10 and 15 nm. From the multipoint BET plot, the surface area of Ag–ZnO NPs found 38.06 m²/gwhich is higher than the ZnO NPs (34.48 m²/g). The photocatalytic study demonstrated that the Ag–ZnO NPs (1.0 mol %) has an excellent photodegradation efficiency of Methyl Orange (96.74%)with a 26% increment as compared to bare ZnO (70.47%). Furthermore, the bactericidal activity of Ag–ZnO NPs (1.0 mol %) was investigated against four different bacterial strains. The results explored that the Gram-negative bacteria (E. coli and P. vulgaris) are more sensitive than Gram-positive (S. aureus and B. cereus) to Ag–ZnO NPs. Overall, the anticipated material is economical and reusable for photodegradation and antibacterial activity.     

Enhancing the photothermal conversion of tetrathiafulvalene-based MOFs by redox doping and plasmon resonance

Near-infrared (NIR) photothermal materials hold great promise for use in several applications, particularly in photothermal therapy, diagnosis, and imaging. However, current NIR responsive materials often show narrow absorption bands and low absorption efficiency, and have long response times. Herein, we demonstrate that the NIR absorption of tetrathiafulvalene-based metal–organic frameworks (MOFs) can be tuned by redox doping and using plasmonic nanoparticles. In this work, a MOF containing redox-active tetrathiafulvalene (TTF) units and Dy-carboxylate chains was constructed, Dy-m-TTFTB. The NIR absorption of the as-synthesized Dy-m-TTFTB was further enhanced by Ag⁺ or I₂ oxidation, transforming the neutral TTF into a TTF˙⁺ radical state. Interestingly, treatment with Ag⁺ not only generated TTF˙⁺ radicals, but it also formed Ag nanoparticles (NPs) in situ within the MOF pores. With both TTF˙⁺ radicals and Ag NPs, Ag NPs@Dy-m-TTFTB was shown to exhibit a wide range of absorption wavelengths (200–1000 nm) and also a high NIR photothermal conversion. When the system was irradiated with an 808 nm laser (energy power of 0.7 W cm⁻²), Ag NPs@Dy-m-TTFTB showed a sharp temperature increase of 239.8 °C. This increase was higher than that of pristine Dy-m-TTFTB (90.1 °C) or I₂ treated I₃⁻@Dy-m-TTFTB (213.0 °C).

The photo-response of the redox-active metal–organic framework has been systematically tuned by incorporating plasmonic Ag nanoparticles and tetrathiafulvalene radicals, resulting in efficient near-infrared photothermal conversion materials.